FusionCharts free的应用

关键类

1创建一个动态xml文件ChartManager .java

/*
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 * and open the template in the editor.
 */
package com.bcc.service;

import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javax.servlet.ServletOutputStream;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import com.bcc.comm.RestUtil;

 

public class ChartManager {

    public void creatLineXml(ServletOutputStream sos, HashMap dateMap,String[] xy, boolean defaultShowData) throws IOException {
        defaultShowData = true;
        //创建新节点
        Document document = DocumentHelper.createDocument();
        Element chart = document.addElement("chart");
        chart.addAttribute("caption", "");//主标题
        chart.addAttribute("rotateYAxisName", "0");
        chart.addAttribute("xAxisName", xy[0]);//x轴标注
        chart.addAttribute("yAxisName",  xy[1]);//y轴标注
        chart.addAttribute("yAxisMinValue", "1500");//y轴最大值
        chart.addAttribute("numberPrefix", "");//y轴单位
        if (defaultShowData == true) {
            chart.addAttribute("showValues", "1");
        } else {
            chart.addAttribute("showValues", "0");
        }
        chart.addAttribute("alternateHGridColor", "FCB541");
        chart.addAttribute("alternateHGridAlpha", "20");
        chart.addAttribute("divLineColor", "FCB541");
        chart.addAttribute("divLineAlpha", "50");
        chart.addAttribute("canvasBorderColor", "666666");
        chart.addAttribute("baseFontColor", "666666");
        chart.addAttribute("lineColor", "FCB541");
        chart.addAttribute("imageSave", "1");
        chart.addAttribute("imageSaveURL", "FusionChartsSave.jsp");
        chart.addAttribute("imageSaveDialogFontColor", "cfbbfc");
        chart.addAttribute("baseFontSize", "12");
       
       
       
        Iterator iter = dateMap.entrySet().iterator();
        while(iter.hasNext()) {
            Element set = chart.addElement("set");
            Map.Entry entry = (Map.Entry) iter.next();
            set.addAttribute("label", entry.getKey().toString());
            set.addAttribute("value", entry.getValue().toString());
         }
        try {
            RestUtil.xmlStream(document, sos);
        } catch (Exception e) {
        }
    }
}

2 创建写入xml的类  RestUtil.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.bcc.comm;

import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLConnection;
import javax.servlet.ServletOutputStream;
import org.dom4j.Document;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

/**
 *
 * @author fenglei
 */
public class RestUtil {
    /**
     * 获得 Document By Url
     * @param url
     * @return
     */
    public static Document getDocumentByUrlXml(String url) throws Exception {
        String xmlString = "";
        InputStream is = RestUtil.getInputStreamByUrlXml(url);
        SAXReader saxReadr = new SAXReader();// 得到SAXReader对象
        Document document = null;
        try{
            document = saxReadr.read(is);
            java.io.StringWriter out = new java.io.StringWriter();
            XMLWriter xw = new XMLWriter(out, new OutputFormat("", true, "GBK"));
            xw.write(document);
            xmlString = out.toString();
            System.out.println("xmlString: " + xmlString);
        }catch (Exception e) {
            System.out.println("获取数据异常: " + e.getMessage());
            throw e;
        }
        return document;
    }

    /**
     * 获得URL资源
     * @param url
     * @return
     */
    public static InputStream getInputStreamByUrlXml(String url){
        URL urlXml = null;
        URLConnection conn = null;
        InputStream is = null;
        try {
            urlXml = new URL(url);
            conn = urlXml.openConnection();
            conn.setConnectTimeout(10000);
            conn.setReadTimeout(10000);
            conn.setDoOutput(true);
            conn.connect();
            is = conn.getInputStream();
        } catch (UnsupportedEncodingException e) {
            System.out.println("UnsupportedEncodingException here");
        } catch (IOException e) {
            System.out.println("IOException here");
        }
        return is;
    }

    /**
     * 精美打印
     * @param document
     * @return
     */
    public static String printXml(Document document) {
        // 将XML写入浄1�7
        OutputFormat format = OutputFormat.createPrettyPrint();
        format.setEncoding("GBK");
        XMLWriter output = null;
        try {
            output = new XMLWriter(format);
            // System.out.println(document.asXML());
            output.write(document);
        } catch (IOException e) {
            // throw e;
        } finally {
            try {
                output.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        String xmlString = document.asXML();
        //System.out.println(xmlString);
        return xmlString;
    }

    public static void xmlStream(Document document, ServletOutputStream sos) throws UnsupportedEncodingException, IOException {
        String xmlString = document.asXML();
        //设置编码
        OutputFormat format = OutputFormat.createPrettyPrint();
        format.setEncoding("GBK");
        XMLWriter xmlout = null;
        try {
            xmlout = new XMLWriter(sos,format);
            xmlout.write(document);
        } catch (IOException ex) {
            throw ex;
        } finally {
            if (xmlout != null) {
                try {
                    xmlout.close();
                } catch (IOException ex) {
                    throw ex;
                }
            }
        }
    }
}

 

3 创建jsp用来保存图片FusionChartsSave.jsp

 

<%@ page import="java.io.OutputStream"%>
<%@ page import="java.awt.Color"%>
<%@ page import="java.awt.Graphics"%>
<%@ page import="java.awt.image.BufferedImage"%>
<%@ page import="javax.imageio.ImageIO"%>
<jsp:directive.page import="java.io.File"/>
<jsp:directive.page import="java.io.FileOutputStream"/>
<%
 //Decoded data from charts.
 String data="";
 //Rows of color values.
 String[] rows;
 //Width and height of chart.
 int width=0;
 int height=0;
 //Default background color of the chart
 String bgcolor="";
 Color bgColor;

 //Get the width and height from form
 try{
  width = Integer.parseInt(request.getParameter("width"));
  height = Integer.parseInt(request.getParameter("height")); 
 }
 catch(Exception e){
  //If the width and height have not been given, we cannot create the image.
  out.print("Image width/height not provided.");
  out.close();
 }

 if(width==0 || height==0){
  //If the width and height are less than 1, we cannot create the image.
  out.print("Image width/height not provided.");
  out.close();
 }
  
 //Get background color from request and set default
 bgcolor =request.getParameter("bgcolor");
 if (bgcolor==null || bgcolor=="" || bgcolor==null){
   bgcolor = "FFFFFF";
 }
 //Convert background color to color object 
 bgColor = new Color(Integer.parseInt(bgcolor,16));

 //Get image data  from request
 data = request.getParameter("data");

 if(data==null){
  //If image data not provided.
  out.print("Image Data not supplied.");
  out.close();
 }

 try{
  //Parse data
  rows = new String[height+1];
  rows = data.split(";");
   
  //Bitmap to store the chart.
  //Reference to graphics object - gr
  BufferedImage chart = new BufferedImage(width,height,BufferedImage.TYPE_3BYTE_BGR);
  Graphics gr = chart.createGraphics();
  gr.setColor(bgColor);
  gr.fillRect(0,0,width,height); 
 
  String c;
  int r;
  int ri = 0;
  for (int i=0; i<rows.length; i++){
   //Split individual pixels.   
   String[] pixels = rows[i].split(",");   
   //Set horizontal row index to 0
   ri = 0;
   for (int j=0; j<pixels.length; j++){    
    //Now, if it's not empty, we process it    
    //Split the color and repeat factor
 
    String[] clrs = pixels[j].split("_"); 
    //Reference to color
    c = clrs[0];
    r = Integer.parseInt(clrs[1]);
 
    //If color is not empty (i.e. not background pixel)
    if (c!=null && c.length()>0 && c!=""){  
     if (c.length()<6){
      //If the hexadecimal code is less than 6 characters, pad with 0
      StringBuffer str = new StringBuffer(c);
      int strLength  = str.length();
        for ( int p = c.length()+1; p <= 6 ; p ++ ) {
          str.insert( 0, "0" );
        }
      //Assing the new padded string
      c = str.toString();
     }
     for (int k=1; k<=r; k++){ 
      //Draw each pixel
      gr.setColor(new Color(Integer.parseInt(c,16)));
      gr.fillRect(ri, i,1,1);
      //Increment horizontal row count
      ri++;      
     }
    }else{
     //Just increment horizontal index
     ri = ri + r;
    }
   }
  }
  
 
  //Returns the image
  response.setContentType("image/jpeg");
  response.addHeader("Content-Disposition", "attachment; filename=/"FusionCharts.jpg/"");
  OutputStream os = response.getOutputStream();

  ImageIO.write(chart, "jpeg", os);
  
  os.close();
  
 }catch(Exception e){
  //IF the image data is mal-formatted.
  out.print("Image data is not in proper format.");
  out.close();
 }
%>

 

4 action里面的代码

 /**
   * 统计分析,生成数据，FusionCharts
   */
 public void figureViewtjfx(HttpServletRequest req, HttpServletResponse res){
  try {
    HttpSession session = req.getSession();
       List<ContentVoBean> contenList=(List)session.getAttribute("sessionVoBeantjfx");
         chartManager = new ChartManager();
          res.setContentType("text/xml; charset=GBK");
          res.setDateHeader("Dxpires", 0);
          res.setHeader("Cache-Control", "no-cache");
          res.setHeader("Pragma", "no-cache");
         
         
          ServletOutputStream sos = res.getOutputStream();
          HashMap dataMap = new HashMap();
          for(int i=0;i<contenList.size();i++){
            dataMap.put(contenList.get(i).getUserNumber(), contenList.get(i).getRealityTemperature());
          }
         String[] xy=new String[]{"当前时间段用户平均温度","温度值"};;
           chartManager.creatLineXml(sos, dataMap,xy, true);
   } catch (IOException e) {
    e.printStackTrace();
   }
  }

 

5 jsp页面中的代码

 

            <div id="chartdiv3" align="center"></div>
            <tr><td align="center"><input type="button" onclick="javascript:formSubmit();"  value="生成报表" class="buttoncss">&nbsp;&nbsp;&nbsp;&nbsp;<input type="button" onclick="javascript:formSubmit();"  value="打印图表" class="buttoncss"></td></tr>
       </table>
       <script type="text/javascript">
        var chart = new FusionCharts("<%=request.getContextPath()%>/style/FusionCharts/Charts/Pie2D.swf", "ChartId", "950", "380", "0", "0");
             chart.setDataURL("<%=request.getContextPath()%>/contentAction?action=figureViewtjfx");
             chart.render("chartdiv3");
          </script>