使用jasperreport动态生成pdf,excel,html

使用jasperreport动态生成pdf,excel,html

jasperreport 动态报表

本文是结合我工作中实际项目来写的，所以有部分内容与你们将要使用的有所不同。

先介绍下我的项目，此项目为flex+java开发的，中间flex使用了自己写的一个小型框架来实现。

 

此报表导出实现了多表头打印，个人感觉应用还是比较理想的。

 

 

先来点核心代码：

  

Java代码  

1. package com.wfy.util;   
2.   
3. import java.io.ByteArrayOutputStream;   
4. import java.io.File;   
5. import java.io.FileNotFoundException;   
6. import java.io.FileOutputStream;   
7. import java.io.OutputStream;   
8. import java.util.ArrayList;   
9. import java.util.HashMap;   
10. import java.util.List;   
11. import java.util.Map;   
12.   
13. import javax.print.attribute.HashPrintRequestAttributeSet;   
14. import javax.print.attribute.HashPrintServiceAttributeSet;   
15. import javax.print.attribute.PrintRequestAttributeSet;   
16. import javax.print.attribute.PrintServiceAttributeSet;   
17. import javax.print.attribute.standard.Copies;   
18. import javax.print.attribute.standard.MediaSizeName;   
19. import javax.print.attribute.standard.PrinterName;   
20. import javax.swing.GroupLayout.Alignment;   
21.   
22. import net.sf.jasperreports.engine.JRBand;   
23. import net.sf.jasperreports.engine.JRException;   
24. import net.sf.jasperreports.engine.JRExporterParameter;   
25. import net.sf.jasperreports.engine.JRReport;   
26. import net.sf.jasperreports.engine.JasperCompileManager;   
27. import net.sf.jasperreports.engine.JasperExportManager;   
28. import net.sf.jasperreports.engine.JasperFillManager;   
29. import net.sf.jasperreports.engine.JasperPrint;   
30. import net.sf.jasperreports.engine.JasperReport;   
31. import net.sf.jasperreports.engine.JasperRunManager;   
32. import net.sf.jasperreports.engine.base.JRBaseLine;   
33. import net.sf.jasperreports.engine.base.JRBasePrintText;   
34. import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;   
35. import net.sf.jasperreports.engine.design.JRDesignBand;   
36. import net.sf.jasperreports.engine.design.JRDesignExpression;   
37. import net.sf.jasperreports.engine.design.JRDesignField;   
38. import net.sf.jasperreports.engine.design.JRDesignStaticText;   
39. import net.sf.jasperreports.engine.design.JRDesignTextField;   
40. import net.sf.jasperreports.engine.design.JasperDesign;   
41. import net.sf.jasperreports.engine.export.JRHtmlExporter;   
42. import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;   
43. import net.sf.jasperreports.engine.export.JRPrintServiceExporter;   
44. import net.sf.jasperreports.engine.export.JRPrintServiceExporterParameter;   
45. import net.sf.jasperreports.engine.export.JRXlsExporter;   
46. import net.sf.jasperreports.engine.export.JRXlsExporterParameter;   
47. import net.sf.jasperreports.engine.util.JRSaver;   
48. import net.sf.jasperreports.view.JasperViewer;   
49.   
50. import org.apache.commons.beanutils.BasicDynaBean;   
51. import org.apache.commons.beanutils.BasicDynaClass;   
52. import org.apache.commons.beanutils.DynaBean;   
53. import org.apache.commons.beanutils.DynaProperty;   
54. import org.apache.commons.logging.Log;   
55. import org.apache.commons.logging.LogFactory;   
56.   
57. import com.jaspersoft.ireport.designer.sheet.properties.HorizontalAlignmentProperty;   
58. import com.wfy.servlet.StartServlet;   
59.   
60. /**  
61.  * JasperReport 動態列 打印  
62.  *   
63.  * @author hxy  
64.  *   
65.  */  
66. public class ReportProcess {   
67.   
68.     private static Log logger = LogFactory.getLog(Copy_2_of_ReportProcess.class);   
69.     /** 設置字段寬度 */  
70. //  private final static int textWidth = 80;   
71.     /** 設置字段高度 */  
72.     private final static int textHeight = 20;   
73.     /** coulumnHeader區域字體大小 */  
74.     private final static int columnHeaderfontSize = 11;   
75.     /** detail 區域字體大小 */  
76.     private final static int fontSize = 9;   
77.     /** 設置間距 */  
78. //  private final static int X = 0;   
79.     /** coulumnHeader區域高度 */  
80.     private final static int columnHeaderHeight = 20;   
81.     /** detail 區域高度 */  
82.     private final static int detailHeight = 20;   
83.     /**  */  
84.     private static String aliasColumn = "column";   
85.        
86.     private static double mm_Pixel = 2.83;   
87.        
88.     public static int mmToPixel(int mm){   
89.         return (int)Math.rint((mm * mm_Pixel));   
90.     }   
91.   
92.     public  String createReport(Map pageSet, String title, List coluns, List list, String reportType){   
93.         String url1 = "createPdf\\"+TimeUtil.dateTime6()+"."+reportType;   
94.         String url = StartServlet.webRoot+url1;   
95.         FileUtil.createFolder(url);   
96.         File f = new File(url);   
97.            
98.         try {   
99.             OutputStream out = new FileOutputStream(f);   
100.             preview(pageSet, title, coluns, list, out, reportType);   
101.             out.close();   
102.         } catch (FileNotFoundException e) {   
103.             e.printStackTrace();   
104.         } catch (Exception e) {   
105.             e.printStackTrace();   
106.         }   
107.   
108.         url1 = url1.replace("\\", "/");   
109.            
110.         return url1;   
111.     }   
112.        
113.     /**  
114.      * PDF打印  
115.      *   
116.      * @param headers  
117.      *            colimnHeaders  
118.      * @param list  
119.      *            數據來源  
120.      * @param out  
121.      *            輸出流  
122.      * @throws Exception  
123.      */  
124.        
125.     public  void preview(Map pageSet, String titleStr, List coluns, List<Map> list,   
126.             OutputStream out, String reportType) throws Exception {   
127.         long start = System.currentTimeMillis();   
128.         JasperReport jp = getJasperReport(pageSet, titleStr, coluns, reportType);   
129.         Map<String, Object> parameters = new HashMap<String, Object>();   
130.         JasperPrint jasperPrint = JasperFillManager.fillReport(jp, parameters, new JRBeanCollectionDataSource(getBaseList(alias, list)));//phrase(list)   
131.         logger.info("Filling time : " + (System.currentTimeMillis() - start));     
132.            
133.         //将解析完的参数传入报表模板中并生成报表   
134.         if(reportType.equals("pdf")){   
135.             JasperExportManager.exportReportToPdfStream(jasperPrint, out);   
136.         }else if(reportType.equals("xls")){   
137.             JRXlsExporter exporter = new JRXlsExporter();   
138.             ByteArrayOutputStream oStream = new ByteArrayOutputStream();   
139.             exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);   
140.             exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, oStream);   
141.             exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS, Boolean.TRUE);   
142.             exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.FALSE);   
143.             exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);   
144.             exporter.exportReport();   
145.             byte[] bytes = oStream.toByteArray();   
146.             out.write(bytes);   
147.         }else{   
148.             //生成html   
149.             JRHtmlExporter exporter = new JRHtmlExporter();   
150.             ByteArrayOutputStream oStream = new ByteArrayOutputStream();   
151.             exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE);   
152.             exporter.setParameter(JRHtmlExporterParameter.JASPER_PRINT, jasperPrint);   
153.             exporter.setParameter(JRHtmlExporterParameter.CHARACTER_ENCODING, "utf-8");   
154.             exporter.setParameter(JRHtmlExporterParameter.OUTPUT_STREAM, oStream);   
155.             exporter.exportReport();   
156.             byte[] bytes = oStream.toByteArray();   
157.             out.write(bytes);   
158.         }   
159.            
160.         logger.info("Printing time : " + (System.currentTimeMillis() - start));   
161.     }   
162.   
163.   
164.     public  List<String[]> phrase(List<Object[]> list) {   
165.         List<String[]> temps = new ArrayList<String[]>();   
166.         String[] s = null;   
167.         for (Object[] obj : list) {   
168.             s = new String[obj.length];   
169.             for (int i = 0; i < obj.length; i++) {   
170.                 s[i] = obj[i].toString();   
171.             }   
172.             temps.add(s);   
173.         }   
174.         return temps;   
175.     }   
176.   
177.     /**  
178.      * 產生columnHeaders的別名(Headers[]有可能為中文，所以有必要用別名來替換)  
179.      *   
180.      * @param headers  
181.      * @return  
182.      */  
183.     private  String[] preaseAliasColumnHeaders(String headers[]) {   
184.         int size = headers.length;   
185.         String[] alias = new String[size];   
186.         for (int i = 0; i < size; i++) {   
187.             alias[i] = aliasColumn + i;   
188.         }   
189.         return alias;   
190.     }   
191.   
192.     /**  
193.      * 產生Template文件  
194.      *   
195.      * @param headers  
196.      * @param alias  
197.      * @return  
198.      * @throws JRException  
199.      */  
200.     private List colunsMode = new ArrayList();   
201.     private double scaling = 1.00;   
202.     private List<Integer> widths = new ArrayList();   
203.     private JRDesignBand columnHeader = null;   
204.     private int X = 0;   
205.     private int Y = 0;   
206.     List<String> alias = new ArrayList();   
207.        
208.     @SuppressWarnings("deprecation")   
209.     private  JasperReport getJasperReport(Map pageSet, String titleStr, List coluns, String reportType) throws JRException {   
210.         JasperDesign design = new JasperDesign();   
211.   
212.         // name="statistics"   
213.         design.setName("富友erp数据导出");   
214.   
215.         // columnSpacing="0"   
216.         design.setColumnSpacing(0);   
217.         // leftMargin="30"   
218.         design.setLeftMargin(0);   
219.         // rightMargin="30"   
220.         design.setRightMargin(0);   
221.         // topMargin="20"   
222.         design.setTopMargin(0);   
223.         // bottomMargin="20"   
224.         design.setBottomMargin(0);   
225.            
226.         design.setIgnorePagination(true);   
227.            
228.         //up down left rigth pageWidth pageHeigth layout(V(竖版),H(横板))   
229.         int up = mmToPixel(Integer.parseInt(pageSet.get("up").toString()));   
230.         int down = mmToPixel(Integer.parseInt(pageSet.get("down").toString()));   
231.         int left = mmToPixel(Integer.parseInt(pageSet.get("left").toString()));   
232.         int right = mmToPixel(Integer.parseInt(pageSet.get("right").toString()));   
233.         int pageWidth = mmToPixel(Integer.parseInt(pageSet.get("pageWidth").toString()));   
234.         int pageHeight = mmToPixel(Integer.parseInt(pageSet.get("pageHeight").toString()));   
235.         String layout = pageSet.get("layout").toString();   
236.            
237.            
238.         int tableWidth = 0;   
239.         for (int i = 0; i < coluns.size(); i++) {   
240.             Map map = (Map)coluns.get(i);   
241.             tableWidth += Integer.parseInt(map.get("width").toString());   
242.         }   
243.            
244.         if(reportType.equals("pdf")){   
245.   
246.             // columnCount="1"   
247.             // printOrder="Vertical"   
248.             design.setPrintOrder(JRReport.PRINT_ORDER_VERTICAL);   
249.             // orientation="Portrait"   
250.             design.setOrientation(JRReport.ORIENTATION_PORTRAIT);   
251.             // pageWidth="595"   
252.                
253.                
254.             //缩放值              
255.             if(layout.equals("V")){   
256.                 scaling = (double)(pageWidth-left-right)/(double)tableWidth;   
257.                 design.setPageHeight(pageHeight);   
258.                 design.setPageWidth(pageWidth);   
259.                 design.setColumnWidth(pageWidth-left-right);   
260.             }else{   
261.                 scaling = (double)(pageHeight-left-right)/(double)tableWidth;   
262.                 design.setPageHeight(pageWidth);   
263.                 design.setPageWidth(pageHeight);   
264.                 design.setColumnWidth(pageHeight-left-right);   
265.             }   
266.                
267.             // leftMargin="30"   
268.             design.setLeftMargin(left);   
269.             // rightMargin="30"   
270.             design.setRightMargin(right);   
271.             // topMargin="20"   
272.             design.setTopMargin(up);   
273.             // bottomMargin="20"   
274.             design.setBottomMargin(down);   
275.             // whenNoDataType="NoPages"   
276.             design.setIgnorePagination(false);   
277.                
278.             design.setWhenNoDataType(JRReport.WHEN_NO_DATA_TYPE_BLANK_PAGE);   
279.             // isTitleNewPage="false"   
280.             design.setTitleNewPage(false);   
281.             // isSummaryNewPage="false"   
282.             design.setSummaryNewPage(false);   
283.         }   
284.   
285.   
286.         JRDesignBand title = new JRDesignBand();   
287.         title.setHeight(50);   
288.         JRDesignStaticText titleText = new JRDesignStaticText();   
289.         titleText.setText(titleStr);   
290.         titleText.setX(0);   
291.         titleText.setFontSize(20);   
292.         titleText.setHeight(40);   
293.         titleText.setWidth( (int)Math.rint(tableWidth*scaling) );   
294.             
295.          titleText.setTextAlignment(JRDesignStaticText.HORIZONTAL_ALIGN_CENTER);   
296.          titleText.setPdfFontName("STSong-Light");   
297.          titleText.setPdfEmbedded(true);   
298.          titleText.setPdfEncoding("UniGB-UCS2-H");   
299.          title.addElement(titleText);   
300.            
301.          design.setTitle(title);   
302.   
303.         columnHeader = new JRDesignBand();   
304.            
305.   
306.   
307.   
308.         this.ergodicColumns(coluns, X, 0);   
309.         columnHeader.setHeight(columnHeaderHeight*(RowLength+1));   
310.         X = 0;   
311.         Y = 0;   
312.            
313.         JRDesignBand detail = new JRDesignBand();   
314.         detail.setHeight(detailHeight);   
315.            
316.         for (int j = 0; j < alias.size(); j++) {   
317.             // define fields   
318.             JRDesignField field = new JRDesignField();   
319.             field.setName( alias.get(j) );   
320.             field.setValueClass(String.class);   
321.             design.addField(field);   
322.                
323.             // add text fields for displaying fields   
324.             JRDesignTextField textField = new JRDesignTextField();   
325.             JRDesignExpression expression = new JRDesignExpression();   
326.             expression.setText("$F{" + alias.get(j) + "}");   
327.             expression.setValueClass(String.class);   
328.             textField.setExpression(expression);   
329.             textField.setFontSize(fontSize);   
330.             textField.setHeight(textHeight);   
331.             textField.setWidth(widths.get(j));   
332.             textField.setX(X);   
333.             textField.setPdfFontName("STSong-Light");   
334.             textField.setPdfEmbedded(true);   
335.             textField.setPdfEncoding("UniGB-UCS2-H");   
336.             textField.setHorizontalAlignment(JRBasePrintText.HORIZONTAL_ALIGN_CENTER);   
337.             textField.setVerticalAlignment(JRBasePrintText.VERTICAL_ALIGN_MIDDLE);   
338.             textField.setLeftBorder(JRBaseLine.PEN_1_POINT);   
339.             textField.setTopBorder(JRBaseLine.PEN_1_POINT);   
340.             textField.setRightBorder(JRBaseLine.PEN_1_POINT);   
341.             textField.setBottomBorder(JRBaseLine.PEN_1_POINT);   
342.             textField.setBlankWhenNull(true);   
343.             detail.addElement(textField);   
344.                
345.             X += widths.get(j);   
346.         }   
347.            
348.         design.setColumnHeader(columnHeader);   
349.         design.setDetail(detail);   
350.            
351.         if(reportType.equals("pdf")){   
352.             JRDesignBand pageFooter = new JRDesignBand();   
353.             pageFooter.setHeight(20);   
354.             JRDesignTextField footerText = new JRDesignTextField();   
355.             JRDesignExpression expressionF = new JRDesignExpression();   
356.             expressionF.setText("$V{PAGE_NUMBER}");   
357.             expressionF.setValueClass(Integer.class);   
358.             footerText.setExpression(expressionF);   
359.             if(layout.equals("V")){   
360.                     footerText.setX(pageWidth-right-100);   
361.             }else{   
362.                 footerText.setX(pageHeight-right-100);   
363.             }   
364.   
365.             footerText.setFontSize(9);   
366.             footerText.setHeight(15);   
367.             footerText.setWidth(100);   
368.             footerText.setPdfFontName("STSong-Light");   
369.             footerText.setPdfEmbedded(true);   
370.             footerText.setPdfEncoding("UniGB-UCS2-H");   
371.             pageFooter.addElement(footerText);   
372.             design.setPageFooter(pageFooter);              
373.         }   
374.   
375.         return JasperCompileManager.compileReport(design);   
376.     }   
377.        
378.     private int RowLength = 0;   
379.     private List ergodicColumns(List array, int X, int rowLength) {   
380.         if(rowLength>=RowLength){   
381.             RowLength = rowLength;    
382.         }   
383.         List arrayC = new ArrayList();   
384.         int w = 0;   
385.         /**  
386.          * 需要得到所有表头信息。  
387.          * 如果为多级表头时，需要得到每级的表头信息，并记录其信息。   
388.          * **/  
389.         for(int i = 0; i<array.size(); i++){   
390.             //创建表头信息   
391.             Map map = (Map)array.get(i);   
392.             int width = (int)Math.rint((Double.parseDouble(map.get("width").toString()))*scaling);   
393.   
394.             // add column headers   
395.             JRDesignStaticText staticText = new JRDesignStaticText();   
396.             staticText.setText(map.get("title").toString());   
397.             staticText.setFontSize(columnHeaderfontSize);   
398.             staticText.setHeight( (Integer.parseInt(map.get("length").toString())+1)*textHeight );   
399.                
400.             staticText.setWidth(width);   
401.             staticText.setX(X);   
402.             staticText.setY(rowLength*columnHeaderHeight);   
403.             staticText.setPdfFontName("STSong-Light");   
404.             staticText.setPdfEmbedded(true);   
405.             staticText.setPdfEncoding("UniGB-UCS2-H");   
406.             staticText.setHorizontalAlignment(JRBasePrintText.HORIZONTAL_ALIGN_CENTER);   
407.             staticText.setVerticalAlignment(JRBasePrintText.VERTICAL_ALIGN_MIDDLE);   
408.             staticText.setLeftBorder(JRBaseLine.PEN_1_POINT);   
409.             staticText.setTopBorder(JRBaseLine.PEN_1_POINT);   
410.             staticText.setRightBorder(JRBaseLine.PEN_1_POINT);   
411.             staticText.setBottomBorder(JRBaseLine.PEN_1_POINT);   
412.             columnHeader.addElement(staticText);   
413.             if(map.get("array")==null){   
414.                 colunsMode.add(map);   
415.                 alias.add(map.get("name").toString());   
416.                 this.widths.add(width);   
417.                 w = width;   
418.                 arrayC.add(staticText);   
419.             }else{   
420.                 Object[] obj = (Object[])map.get("array");   
421.                 List lista = new ArrayList();   
422.                 for (int j = 0; j < obj.length; j++) {   
423.                     lista.add(obj[j]);   
424.                 }   
425.                 List list = this.ergodicColumns(lista, X, rowLength+1 );   
426.                 /*  
427.                  * 根据X坐标重新计算 每列位置。  
428.                  * */  
429.                 staticText.setX(X);   
430.                    
431.                 int xa = X;   
432.                 w = 0;   
433.                 for (int j = 0; j < list.size(); j++) {   
434.                     JRDesignStaticText staticTextA = (JRDesignStaticText)list.get(j);   
435.                     staticTextA.setX(xa);   
436.                     xa = xa + staticTextA.getWidth();   
437.                     w += staticTextA.getWidth();   
438.                 }   
439.                 if(w!=0){   
440.                     staticText.setWidth(w);                    
441.                 }else{   
442.                     w = staticText.getWidth();    
443.                 }   
444.   
445.             }   
446.             X += w;   
447.         }   
448.            
449.         return arrayC;   
450.     }   
451.        
452.        
453.   
454.     /**  
455.      * 利用反射機制，裝拼數據  
456.      *   
457.      * @param headers  
458.      * @param list  
459.      * @return  
460.      * @throws Exception  
461.      */  
462.     private List<Object> getBaseList(List<String> headers, List<Map> list) throws Exception {   
463.         List<Object> result = new ArrayList<Object>();   
464.         int length = headers.size();   
465.         DynaProperty[] dynaProps = new DynaProperty[length];   
466.         for (int i = 0; i < length; i++) {   
467.             dynaProps[i] = new DynaProperty(headers.get(i), String.class);   
468.         }   
469.         BasicDynaClass dynaClass = new BasicDynaClass("first", BasicDynaBean.class, dynaProps);   
470.         for (Map obj : list) {   
471.             DynaBean employee = dynaClass.newInstance();   
472.             for (int i = 0; i < length; i++) {   
473.                 employee.set(headers.get(i), obj.get(headers.get(i)));   
474.             }   
475.             result.add(employee);   
476.         }   
477.         return result;   
478.     }   
479.   
480. }  

package com.wfy.util;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.HashPrintServiceAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.PrintServiceAttributeSet;
import javax.print.attribute.standard.Copies;
import javax.print.attribute.standard.MediaSizeName;
import javax.print.attribute.standard.PrinterName;
import javax.swing.GroupLayout.Alignment;

import net.sf.jasperreports.engine.JRBand;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JRReport;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.JasperRunManager;
import net.sf.jasperreports.engine.base.JRBaseLine;
import net.sf.jasperreports.engine.base.JRBasePrintText;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import net.sf.jasperreports.engine.design.JRDesignBand;
import net.sf.jasperreports.engine.design.JRDesignExpression;
import net.sf.jasperreports.engine.design.JRDesignField;
import net.sf.jasperreports.engine.design.JRDesignStaticText;
import net.sf.jasperreports.engine.design.JRDesignTextField;
import net.sf.jasperreports.engine.design.JasperDesign;
import net.sf.jasperreports.engine.export.JRHtmlExporter;
import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;
import net.sf.jasperreports.engine.export.JRPrintServiceExporter;
import net.sf.jasperreports.engine.export.JRPrintServiceExporterParameter;
import net.sf.jasperreports.engine.export.JRXlsExporter;
import net.sf.jasperreports.engine.export.JRXlsExporterParameter;
import net.sf.jasperreports.engine.util.JRSaver;
import net.sf.jasperreports.view.JasperViewer;

import org.apache.commons.beanutils.BasicDynaBean;
import org.apache.commons.beanutils.BasicDynaClass;
import org.apache.commons.beanutils.DynaBean;
import org.apache.commons.beanutils.DynaProperty;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.jaspersoft.ireport.designer.sheet.properties.HorizontalAlignmentProperty;
import com.wfy.servlet.StartServlet;

/**
 * JasperReport 動態列 打印
 * 
 * @author hxy
 * 
 */
public class ReportProcess {

	private static Log logger = LogFactory.getLog(Copy_2_of_ReportProcess.class);
	/** 設置字段寬度 */
//	private final static int textWidth = 80;
	/** 設置字段高度 */
	private final static int textHeight = 20;
	/** coulumnHeader區域字體大小 */
	private final static int columnHeaderfontSize = 11;
	/** detail 區域字體大小 */
	private final static int fontSize = 9;
	/** 設置間距 */
//	private final static int X = 0;
	/** coulumnHeader區域高度 */
	private final static int columnHeaderHeight = 20;
	/** detail 區域高度 */
	private final static int detailHeight = 20;
	/**  */
	private static String aliasColumn = "column";
	
	private static double mm_Pixel = 2.83;
	
	public static int mmToPixel(int mm){
		return (int)Math.rint((mm * mm_Pixel));
	}

	public  String createReport(Map pageSet, String title, List coluns, List list, String reportType){
		String url1 = "createPdf\\"+TimeUtil.dateTime6()+"."+reportType;
		String url = StartServlet.webRoot+url1;
		FileUtil.createFolder(url);
		File f = new File(url);
		
		try {
			OutputStream out = new FileOutputStream(f);
			preview(pageSet, title, coluns, list, out, reportType);
			out.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}

		url1 = url1.replace("\\", "/");
		
		return url1;
	}
	
	/**
	 * PDF打印
	 * 
	 * @param headers
	 *            colimnHeaders
	 * @param list
	 *            數據來源
	 * @param out
	 *            輸出流
	 * @throws Exception
	 */
	
	public  void preview(Map pageSet, String titleStr, List coluns, List<Map> list,
			OutputStream out, String reportType) throws Exception {
		long start = System.currentTimeMillis();
		JasperReport jp = getJasperReport(pageSet, titleStr, coluns, reportType);
		Map<String, Object> parameters = new HashMap<String, Object>();
		JasperPrint jasperPrint = JasperFillManager.fillReport(jp, parameters, new JRBeanCollectionDataSource(getBaseList(alias, list)));//phrase(list)
		logger.info("Filling time : " + (System.currentTimeMillis() - start));	
		
		//将解析完的参数传入报表模板中并生成报表
		if(reportType.equals("pdf")){
			JasperExportManager.exportReportToPdfStream(jasperPrint, out);
		}else if(reportType.equals("xls")){
			JRXlsExporter exporter = new JRXlsExporter();
			ByteArrayOutputStream oStream = new ByteArrayOutputStream();
			exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
			exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, oStream);
			exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS, Boolean.TRUE);
			exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.FALSE);
			exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);
			exporter.exportReport();
			byte[] bytes = oStream.toByteArray();
			out.write(bytes);
		}else{
			//生成html
			JRHtmlExporter exporter = new JRHtmlExporter();
			ByteArrayOutputStream oStream = new ByteArrayOutputStream();
			exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE);
			exporter.setParameter(JRHtmlExporterParameter.JASPER_PRINT, jasperPrint);
			exporter.setParameter(JRHtmlExporterParameter.CHARACTER_ENCODING, "utf-8");
			exporter.setParameter(JRHtmlExporterParameter.OUTPUT_STREAM, oStream);
			exporter.exportReport();
			byte[] bytes = oStream.toByteArray();
			out.write(bytes);
		}
		
		logger.info("Printing time : " + (System.currentTimeMillis() - start));
	}


	public  List<String[]> phrase(List<Object[]> list) {
		List<String[]> temps = new ArrayList<String[]>();
		String[] s = null;
		for (Object[] obj : list) {
			s = new String[obj.length];
			for (int i = 0; i < obj.length; i++) {
				s[i] = obj[i].toString();
			}
			temps.add(s);
		}
		return temps;
	}

	/**
	 * 產生columnHeaders的別名(Headers[]有可能為中文，所以有必要用別名來替換)
	 * 
	 * @param headers
	 * @return
	 */
	private  String[] preaseAliasColumnHeaders(String headers[]) {
		int size = headers.length;
		String[] alias = new String[size];
		for (int i = 0; i < size; i++) {
			alias[i] = aliasColumn + i;
		}
		return alias;
	}

	/**
	 * 產生Template文件
	 * 
	 * @param headers
	 * @param alias
	 * @return
	 * @throws JRException
	 */
	private List colunsMode = new ArrayList();
	private double scaling = 1.00;
	private List<Integer> widths = new ArrayList();
	private JRDesignBand columnHeader = null;
	private int X = 0;
	private int Y = 0;
	List<String> alias = new ArrayList();
	
	@SuppressWarnings("deprecation")
	private  JasperReport getJasperReport(Map pageSet, String titleStr, List coluns, String reportType) throws JRException {
		JasperDesign design = new JasperDesign();

		// name="statistics"
		design.setName("富友erp数据导出");

		// columnSpacing="0"
		design.setColumnSpacing(0);
		// leftMargin="30"
		design.setLeftMargin(0);
		// rightMargin="30"
		design.setRightMargin(0);
		// topMargin="20"
		design.setTopMargin(0);
		// bottomMargin="20"
		design.setBottomMargin(0);
		
		design.setIgnorePagination(true);
		
		//up down left rigth pageWidth pageHeigth layout(V(竖版),H(横板))
		int up = mmToPixel(Integer.parseInt(pageSet.get("up").toString()));
		int down = mmToPixel(Integer.parseInt(pageSet.get("down").toString()));
		int left = mmToPixel(Integer.parseInt(pageSet.get("left").toString()));
		int right = mmToPixel(Integer.parseInt(pageSet.get("right").toString()));
		int pageWidth = mmToPixel(Integer.parseInt(pageSet.get("pageWidth").toString()));
		int pageHeight = mmToPixel(Integer.parseInt(pageSet.get("pageHeight").toString()));
		String layout = pageSet.get("layout").toString();
		
		
		int tableWidth = 0;
		for (int i = 0; i < coluns.size(); i++) {
			Map map = (Map)coluns.get(i);
			tableWidth += Integer.parseInt(map.get("width").toString());
		}
		
		if(reportType.equals("pdf")){

			// columnCount="1"
			// printOrder="Vertical"
			design.setPrintOrder(JRReport.PRINT_ORDER_VERTICAL);
			// orientation="Portrait"
			design.setOrientation(JRReport.ORIENTATION_PORTRAIT);
			// pageWidth="595"
			
			
			//缩放值			
			if(layout.equals("V")){
				scaling = (double)(pageWidth-left-right)/(double)tableWidth;
				design.setPageHeight(pageHeight);
				design.setPageWidth(pageWidth);
				design.setColumnWidth(pageWidth-left-right);
			}else{
				scaling = (double)(pageHeight-left-right)/(double)tableWidth;
				design.setPageHeight(pageWidth);
				design.setPageWidth(pageHeight);
				design.setColumnWidth(pageHeight-left-right);
			}
			
			// leftMargin="30"
			design.setLeftMargin(left);
			// rightMargin="30"
			design.setRightMargin(right);
			// topMargin="20"
			design.setTopMargin(up);
			// bottomMargin="20"
			design.setBottomMargin(down);
			// whenNoDataType="NoPages"
			design.setIgnorePagination(false);
			
			design.setWhenNoDataType(JRReport.WHEN_NO_DATA_TYPE_BLANK_PAGE);
			// isTitleNewPage="false"
			design.setTitleNewPage(false);
			// isSummaryNewPage="false"
			design.setSummaryNewPage(false);
		}


		JRDesignBand title = new JRDesignBand();
		title.setHeight(50);
		JRDesignStaticText titleText = new JRDesignStaticText();
		titleText.setText(titleStr);
		titleText.setX(0);
		titleText.setFontSize(20);
		titleText.setHeight(40);
		titleText.setWidth( (int)Math.rint(tableWidth*scaling) );
		 
		 titleText.setTextAlignment(JRDesignStaticText.HORIZONTAL_ALIGN_CENTER);
		 titleText.setPdfFontName("STSong-Light");
		 titleText.setPdfEmbedded(true);
		 titleText.setPdfEncoding("UniGB-UCS2-H");
		 title.addElement(titleText);
		
		 design.setTitle(title);

		columnHeader = new JRDesignBand();
		



		this.ergodicColumns(coluns, X, 0);
		columnHeader.setHeight(columnHeaderHeight*(RowLength+1));
		X = 0;
		Y = 0;
		
		JRDesignBand detail = new JRDesignBand();
		detail.setHeight(detailHeight);
		
		for (int j = 0; j < alias.size(); j++) {
			// define fields
			JRDesignField field = new JRDesignField();
			field.setName( alias.get(j) );
			field.setValueClass(String.class);
			design.addField(field);
			
			// add text fields for displaying fields
			JRDesignTextField textField = new JRDesignTextField();
			JRDesignExpression expression = new JRDesignExpression();
			expression.setText("$F{" + alias.get(j) + "}");
			expression.setValueClass(String.class);
			textField.setExpression(expression);
			textField.setFontSize(fontSize);
			textField.setHeight(textHeight);
			textField.setWidth(widths.get(j));
			textField.setX(X);
			textField.setPdfFontName("STSong-Light");
			textField.setPdfEmbedded(true);
			textField.setPdfEncoding("UniGB-UCS2-H");
			textField.setHorizontalAlignment(JRBasePrintText.HORIZONTAL_ALIGN_CENTER);
			textField.setVerticalAlignment(JRBasePrintText.VERTICAL_ALIGN_MIDDLE);
			textField.setLeftBorder(JRBaseLine.PEN_1_POINT);
			textField.setTopBorder(JRBaseLine.PEN_1_POINT);
			textField.setRightBorder(JRBaseLine.PEN_1_POINT);
			textField.setBottomBorder(JRBaseLine.PEN_1_POINT);
			textField.setBlankWhenNull(true);
			detail.addElement(textField);
			
			X += widths.get(j);
		}
		
		design.setColumnHeader(columnHeader);
		design.setDetail(detail);
		
		if(reportType.equals("pdf")){
			JRDesignBand pageFooter = new JRDesignBand();
			pageFooter.setHeight(20);
			JRDesignTextField footerText = new JRDesignTextField();
			JRDesignExpression expressionF = new JRDesignExpression();
			expressionF.setText("$V{PAGE_NUMBER}");
			expressionF.setValueClass(Integer.class);
			footerText.setExpression(expressionF);
			if(layout.equals("V")){
					footerText.setX(pageWidth-right-100);
			}else{
				footerText.setX(pageHeight-right-100);
			}

			footerText.setFontSize(9);
			footerText.setHeight(15);
			footerText.setWidth(100);
			footerText.setPdfFontName("STSong-Light");
			footerText.setPdfEmbedded(true);
			footerText.setPdfEncoding("UniGB-UCS2-H");
			pageFooter.addElement(footerText);
			design.setPageFooter(pageFooter);			
		}

		return JasperCompileManager.compileReport(design);
	}
	
	private int RowLength = 0;
	private List ergodicColumns(List array, int X, int rowLength) {
		if(rowLength>=RowLength){
			RowLength = rowLength; 
		}
		List arrayC = new ArrayList();
		int w = 0;
		/**
		 * 需要得到所有表头信息。
		 * 如果为多级表头时，需要得到每级的表头信息，并记录其信息。 
		 * **/
		for(int i = 0; i<array.size(); i++){
			//创建表头信息
			Map map = (Map)array.get(i);
			int width = (int)Math.rint((Double.parseDouble(map.get("width").toString()))*scaling);

			// add column headers
			JRDesignStaticText staticText = new JRDesignStaticText();
			staticText.setText(map.get("title").toString());
			staticText.setFontSize(columnHeaderfontSize);
			staticText.setHeight( (Integer.parseInt(map.get("length").toString())+1)*textHeight );
			
			staticText.setWidth(width);
			staticText.setX(X);
			staticText.setY(rowLength*columnHeaderHeight);
			staticText.setPdfFontName("STSong-Light");
			staticText.setPdfEmbedded(true);
			staticText.setPdfEncoding("UniGB-UCS2-H");
			staticText.setHorizontalAlignment(JRBasePrintText.HORIZONTAL_ALIGN_CENTER);
			staticText.setVerticalAlignment(JRBasePrintText.VERTICAL_ALIGN_MIDDLE);
			staticText.setLeftBorder(JRBaseLine.PEN_1_POINT);
			staticText.setTopBorder(JRBaseLine.PEN_1_POINT);
			staticText.setRightBorder(JRBaseLine.PEN_1_POINT);
			staticText.setBottomBorder(JRBaseLine.PEN_1_POINT);
			columnHeader.addElement(staticText);
			if(map.get("array")==null){
				colunsMode.add(map);
				alias.add(map.get("name").toString());
				this.widths.add(width);
				w = width;
				arrayC.add(staticText);
			}else{
				Object[] obj = (Object[])map.get("array");
				List lista = new ArrayList();
				for (int j = 0; j < obj.length; j++) {
					lista.add(obj[j]);
				}
				List list = this.ergodicColumns(lista, X, rowLength+1 );
				/*
				 * 根据X坐标重新计算 每列位置。
				 * */
				staticText.setX(X);
				
				int xa = X;
				w = 0;
				for (int j = 0; j < list.size(); j++) {
					JRDesignStaticText staticTextA = (JRDesignStaticText)list.get(j);
					staticTextA.setX(xa);
					xa = xa + staticTextA.getWidth();
					w += staticTextA.getWidth();
				}
				if(w!=0){
					staticText.setWidth(w);					
				}else{
					w =	staticText.getWidth(); 
				}

			}
			X += w;
		}
		
		return arrayC;
	}
	
	

	/**
	 * 利用反射機制，裝拼數據
	 * 
	 * @param headers
	 * @param list
	 * @return
	 * @throws Exception
	 */
	private List<Object> getBaseList(List<String> headers, List<Map> list) throws Exception {
		List<Object> result = new ArrayList<Object>();
		int length = headers.size();
		DynaProperty[] dynaProps = new DynaProperty[length];
		for (int i = 0; i < length; i++) {
			dynaProps[i] = new DynaProperty(headers.get(i), String.class);
		}
		BasicDynaClass dynaClass = new BasicDynaClass("first", BasicDynaBean.class, dynaProps);
		for (Map obj : list) {
			DynaBean employee = dynaClass.newInstance();
			for (int i = 0; i < length; i++) {
				employee.set(headers.get(i), obj.get(headers.get(i)));
			}
			result.add(employee);
		}
		return result;
	}

}

 

此部分为此函数的核心代码，需要使用的时候需要调用 createReport 方法来执行。

 

createReport(Map pageSet, String title, List coluns, List list, String reportType)

传入参数：pageSet纸张部分设定

Java代码  

1. //up down left rigth pageWidth pageHeigth layout(V(竖版),H(横板))   
2. int up = mmToPixel(Integer.parseInt(pageSet.get("up").toString()));   
3. int down = mmToPixel(Integer.parseInt(pageSet.get("down").toString()));   
4. int left = mmToPixel(Integer.parseInt(pageSet.get("left").toString()));   
5. int right = mmToPixel(Integer.parseInt(pageSet.get("right").toString()));   
6. int pageWidth = mmToPixel(Integer.parseInt(pageSet.get("pageWidth").toString()));   
7. int pageHeight = mmToPixel(Integer.parseInt(pageSet.get("pageHeight").toString()));   
8. String layout = pageSet.get("layout").toString();   

		//up down left rigth pageWidth pageHeigth layout(V(竖版),H(横板))
		int up = mmToPixel(Integer.parseInt(pageSet.get("up").toString()));
		int down = mmToPixel(Integer.parseInt(pageSet.get("down").toString()));
		int left = mmToPixel(Integer.parseInt(pageSet.get("left").toString()));
		int right = mmToPixel(Integer.parseInt(pageSet.get("right").toString()));
		int pageWidth = mmToPixel(Integer.parseInt(pageSet.get("pageWidth").toString()));
		int pageHeight = mmToPixel(Integer.parseInt(pageSet.get("pageHeight").toString()));
		String layout = pageSet.get("layout").toString();
		

 

title 打印的标题，如有必要可以进行相应的扩展

coluns 打印的表头数据

colums结构如下：

Java代码  

1. obj["name"] = 名称obj["title"] = 标题   
2. obj["width"] = 表格宽度   
3. obj["length"] = 如果为多表头的时候有效，设置此表头占用高度   
4. obj["array"] = 如果为多表头，将其子表头信息填入（为List）   
5. obj为Map类型   

obj["name"] = 名称obj["title"] = 标题
obj["width"] = 表格宽度
obj["length"] = 如果为多表头的时候有效，设置此表头占用高度
obj["array"] = 如果为多表头，将其子表头信息填入（为List）
obj为Map类型 

 

reportType 导出文件的格式 pdf , xls , html 三种文件格式

 

 

组合完毕后，既能导出相应的文件出来了。

 

 

下面是结合flex 来创建 上述条件

Java代码  

1. <P>flex代码</P>  

flex代码

Java代码  

1. package com.wfy.sa.basic.report   
2. {   
3.     import com.wfy.components.advancedDataGrid.advancedDataGridClasses.AdvancedDataGridColumnGroup;   
4.     import com.wfy.components.commandmanage.ICommand;   
5.     import com.wfy.components.datagridext.DataGridColumnExt;   
6.     import com.wfy.components.datagridext.DataGridExt;   
7.        
8.     import flash.external.ExternalInterface;   
9.        
10.     import mx.rpc.events.ResultEvent;   
11.     import mx.rpc.remoting.RemoteObject;   
12.   
13.     public class PrintReportByDataGridCommand implements ICommand   
14.     {   
15.         private var dataGrid:DataGridExt   
16.         private var title:String;   
17.         private var remoteObject:Object;   
18.         private var pageSet:PageSet;   
19.         public function PrintReportByDataGridCommand(pageSet:PageSet, title:String, dataGrid:DataGridExt)//DataGridExt 对 AdvancedDataGrid进行扩展，与我们没关系   
20.         {   
21.             this.title = title;   
22.             this.pageSet = pageSet;   
23.             this.dataGrid = dataGrid;   
24.                
25.             this.remoteObject = new RemoteObject("UtilFunctionService");   
26.         }   
27.            
28.         private var colunsMode:Array = new Array();   
29.   
30.         public function execute():void  
31.         {   
32. //          var array:Array = this.dataGrid.columns;//.getDataGridStyleAS().getColumns();   
33.             var array:Array = this.dataGrid.groupedColumns;   
34.             var coluns:Array = new Array();    
35.             coluns = this.ergodicColumns(array, 0);   
36.                
37.             //遍历表格高度。   
38.             coluns = this.getRowLengthColumns(coluns, 0);   
39.                
40.                
41.             var list:Array = new Array();   
42.             var length:int = this.dataGrid.getRowsLength();   
43.             for(var j:int=0; j<length; j++){   
44.                 var obj:Object = new Object();   
45.                 for(var k:int=0; k<colunsMode.length; k++){   
46.                     obj[colunsMode[k]["name"]] = this.dataGrid.getLabel(j , colunsMode[k]["name"]);   
47.                 }   
48.                 list.push(obj);   
49.             }   
50.                
51.             remoteObject.createReportByDataGrid(pageSet, coluns, this.title, list, "pdf");     
52.         }   
53.            
54.         public function OnResult(resultEvent:ResultEvent):String   
55.         {   
56.             var reportUrl:String = resultEvent.result.toString();   
57.   
58.             ExternalInterface.call("window.open", "../"+reportUrl , "打印", "top=0, left=0, toolbar=no, menubar=no, scrollbars=no, resizable=yes, location=no, status=no", "_blank");   
59.   
60.             return "";   
61.         }   
62.            
63.            
64.         private function getRowLengthColumns(array:Array, rowlength:int):Array {   
65.             for(var i:int=0; i<array.length; i++){   
66.                 if(array[i]["array"]!=null){   
67.                     var arrayI:Array = this.getRowLengthColumns(array[i]["array"], rowlength+1);   
68. //                  arrayI[i]["length"] = RowLength-rowlength-1;   
69.                     array[i]["array"] = arrayI;   
70.                     array[i]["length"] = RowLength-rowlength-1;   
71.                 }else{   
72.                     array[i]["length"] = RowLength-rowlength;   
73.                 }   
74.             }   
75.             return array;   
76.         }   
77.            
78.         private var RowLength:int = 0;   
79.         private function ergodicColumns(array:Array, rowlength:int):Array {   
80.             if(rowlength>=RowLength){   
81.                 RowLength = rowlength;    
82.             }   
83.                
84.             var arrayC:Array = new Array();        
85.             /**  
86.              * 需要得到所有表头信息。  
87.              * 如果为多级表头时，需要得到每级的表头信息，并记录其信息。   
88.              * **/  
89.   
90.             for(var i:int=0; i<array.length; i++){   
91.                 if(array[i] is AdvancedDataGridColumnGroup){   
92.                     var ad:AdvancedDataGridColumnGroup = array[i] as AdvancedDataGridColumnGroup;   
93.                     if(ad.visible){   
94. //                      if(ad.headerText!=null && ad.headerText!=""){   
95.                             var obj:Object = new Object();   
96.                             obj["name"] = ad.dataField;   
97.                             obj["title"] = ad.headerText;   
98.                             obj["width"] = ad.width;   
99.                             obj["array"] = this.ergodicColumns(ad.children, rowlength+1 );   
100.                             arrayC.push(obj);   
101.                     }   
102.                 }else if(array[i] is DataGridColumnExt){   
103.                     var da:DataGridColumnExt = array[i] as DataGridColumnExt;   
104.                     if(da.visible){   
105.                         if(da.dataField!=null && da.dataField!="" && da.headerText!=null && da.headerText!=""){   
106.                             var obj:Object = new Object();   
107.                             obj["name"] = da.dataField;   
108.                             obj["title"] = da.headerText;   
109.                             obj["width"] = da.width;//可能需要重新计算   
110.                             arrayC.push(obj);   
111.                             colunsMode.push(obj);   
112.                         }   
113.                     }   
114.                 }   
115.             }   
116.             return arrayC;   
117.         }   
118.            
119.     }   
120. }  

package com.wfy.sa.basic.report
{
	import com.wfy.components.advancedDataGrid.advancedDataGridClasses.AdvancedDataGridColumnGroup;
	import com.wfy.components.commandmanage.ICommand;
	import com.wfy.components.datagridext.DataGridColumnExt;
	import com.wfy.components.datagridext.DataGridExt;
	
	import flash.external.ExternalInterface;
	
	import mx.rpc.events.ResultEvent;
	import mx.rpc.remoting.RemoteObject;

	public class PrintReportByDataGridCommand implements ICommand
	{
		private var dataGrid:DataGridExt
		private var title:String;
		private var remoteObject:Object;
		private var pageSet:PageSet;
		public function PrintReportByDataGridCommand(pageSet:PageSet, title:String, dataGrid:DataGridExt)//DataGridExt 对 AdvancedDataGrid进行扩展，与我们没关系
		{
			this.title = title;
			this.pageSet = pageSet;
			this.dataGrid = dataGrid;
			
			this.remoteObject = new RemoteObject("UtilFunctionService");
		}
		
		private var colunsMode:Array = new Array();

		public function execute():void
		{
//			var array:Array = this.dataGrid.columns;//.getDataGridStyleAS().getColumns();
			var array:Array = this.dataGrid.groupedColumns;
			var coluns:Array = new Array();	
			coluns = this.ergodicColumns(array, 0);
			
			//遍历表格高度。
			coluns = this.getRowLengthColumns(coluns, 0);
			
			
			var list:Array = new Array();
			var length:int = this.dataGrid.getRowsLength();
			for(var j:int=0; j<length; j++){
				var obj:Object = new Object();
				for(var k:int=0; k<colunsMode.length; k++){
					obj[colunsMode[k]["name"]] = this.dataGrid.getLabel(j , colunsMode[k]["name"]);
				}
				list.push(obj);
			}
			
			remoteObject.createReportByDataGrid(pageSet, coluns, this.title, list, "pdf");	
		}
		
		public function OnResult(resultEvent:ResultEvent):String
		{
			var reportUrl:String = resultEvent.result.toString();

			ExternalInterface.call("window.open", "../"+reportUrl , "打印", "top=0, left=0, toolbar=no, menubar=no, scrollbars=no, resizable=yes, location=no, status=no", "_blank");

			return "";
		}
		
		
		private function getRowLengthColumns(array:Array, rowlength:int):Array {
			for(var i:int=0; i<array.length; i++){
				if(array[i]["array"]!=null){
					var arrayI:Array = this.getRowLengthColumns(array[i]["array"], rowlength+1);
//					arrayI[i]["length"] = RowLength-rowlength-1;
					array[i]["array"] = arrayI;
					array[i]["length"] = RowLength-rowlength-1;
				}else{
					array[i]["length"] = RowLength-rowlength;
				}
			}
			return array;
		}
		
		private var RowLength:int = 0;
		private function ergodicColumns(array:Array, rowlength:int):Array {
			if(rowlength>=RowLength){
				RowLength = rowlength; 
			}
			
			var arrayC:Array = new Array();		
			/**
			 * 需要得到所有表头信息。
			 * 如果为多级表头时，需要得到每级的表头信息，并记录其信息。 
			 * **/

			for(var i:int=0; i<array.length; i++){
				if(array[i] is AdvancedDataGridColumnGroup){
					var ad:AdvancedDataGridColumnGroup = array[i] as AdvancedDataGridColumnGroup;
					if(ad.visible){
//						if(ad.headerText!=null && ad.headerText!=""){
							var obj:Object = new Object();
							obj["name"] = ad.dataField;
							obj["title"] = ad.headerText;
							obj["width"] = ad.width;
							obj["array"] = this.ergodicColumns(ad.children, rowlength+1 );
							arrayC.push(obj);
					}
				}else if(array[i] is DataGridColumnExt){
					var da:DataGridColumnExt = array[i] as DataGridColumnExt;
					if(da.visible){
						if(da.dataField!=null && da.dataField!="" && da.headerText!=null && da.headerText!=""){
							var obj:Object = new Object();
							obj["name"] = da.dataField;
							obj["title"] = da.headerText;
							obj["width"] = da.width;//可能需要重新计算
							arrayC.push(obj);
							colunsMode.push(obj);
						}
					}
				}
			}
			return arrayC;
		}
		
	}
}

 

 此函数是我们在flex中做的操作，根据flex的datagrid得到打印的信息，以及表头信息。并传送给后台生成打印文件。