Java POI通过模板方法生成word文档

原文http://blog.youkuaiyun.com/mate_ge/article/details/50812831

这个是word文档模板方法操作工具类：

package util;

import org.apache.poi.xwpf.usermodel.*;
import org.junit.Test;

import java.io.*;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class XwpfTUtil {

    /*String filePath = "/sta.docx";
    InputStream is;
    XWPFDocument doc;
    Map<String, Object> params = new HashMap<String, Object>();

    {
        params.put("${name}", "xxx");
        params.put("${sex}", "男");
        params.put("${political}", "共青团员");
        params.put("${place}", "sssss");
        params.put("${classes}", "3102");
        params.put("${id}", "213123123");
        params.put("${qq}", "213123");
        params.put("${tel}", "312313213");
        params.put("${oldJob}", "sadasd");
        params.put("${swap}", "是");
        params.put("${first}", "asdasd");
        params.put("${second}", "综合事务部");
        params.put("${award}", "asda");
        params.put("${achievement}", "完成科协网站的开发");
        params.put("${advice}", "没有建议");
        params.put("${attach}", "无");

        try {
            is = new FileInputStream(filePath);
            doc = new XWPFDocument(is);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }*/


    /**
     * 用一个docx文档作为模板，然后替换其中的内容，再写入目标文档中。
     *
     * @throws Exception
     */
    /*@Test
    public void testTemplateWrite() throws Exception {
        //替换段落里面的变量
        this.replaceInPara(doc, params);
        //替换表格里面的变量
        this.replaceInTable(doc, params);
        OutputStream os = new FileOutputStream("D:\\sta1.docx");
        doc.write(os);
        this.close(os);
        this.close(is);
    }*/

    /*@Test
    public void myTest1() throws Exception {
        *//*Iterator<XWPFParagraph> iterator = doc.getParagraphsIterator();
        XWPFParagraph para;
        while (iterator.hasNext()) {
            para = iterator.next();
            List<XWPFRun> runs = para.getRuns();
            para.removeRun(0);
            para.insertNewRun(0).setText("hello");
        }

        OutputStream os = new FileOutputStream("D:\\sta1.docx");
        doc.write(os);
        this.close(os);
        this.close(is);*//*

        System.out.println(this.matcher("报告日期：${reportDate}").find());

    }*/

    /*@Test
    public void myReplaceInPara() {
//        Iterator<XWPFParagraph> iterator = doc.getParagraphsIterator();
//        XWPFParagraph para;
//        while (iterator.hasNext()) {
//            para = iterator.next();
//            List<XWPFRun> runs = para.getRuns();
//
//
//        }

        System.out.println('{'=='{');

    }*/

    /**
     * 替换段落里面的变量
     *
     * @param doc    要替换的文档
     * @param params 参数
     */
    public void replaceInPara(XWPFDocument doc, Map<String, Object> params) {
        Iterator<XWPFParagraph> iterator = doc.getParagraphsIterator();
        XWPFParagraph para;
        while (iterator.hasNext()) {
            para = iterator.next();
            this.replaceInPara(para, params);
        }
    }

    /**
     * 替换段落里面的变量
     *
     * @param para   要替换的段落
     * @param params 参数
     */
    public void replaceInPara(XWPFParagraph para, Map<String, Object> params) {
        List<XWPFRun> runs;
        Matcher matcher;
        if (this.matcher(para.getParagraphText()).find()) {
            runs = para.getRuns();

            int start = -1;
            int end = -1;
            String str = "";
            for (int i = 0; i < runs.size(); i++) {
                XWPFRun run = runs.get(i);
                String runText = run.toString();
                System.out.println("------>>>>>>>>>" + runText);
                if ('$' == runText.charAt(0)&&'{' == runText.charAt(1)) {
                    start = i;
                }
                if ((start != -1)) {
                    str += runText;
                }
                if ('}' == runText.charAt(runText.length() - 1)) {
                    if (start != -1) {
                        end = i;
                        break;
                    }
                }
            }
            System.out.println("start--->"+start);
            System.out.println("end--->"+end);

            System.out.println("str---->>>" + str);

            for (int i = start; i <= end; i++) {
                para.removeRun(i);
                i--;
                end--;
                System.out.println("remove i="+i);
            }

            for (String key : params.keySet()) {
                if (str.equals(key)) {
                    para.createRun().setText((String) params.get(key));
                    break;
                }
            }


        }
    }

    /**
     * 替换表格里面的变量
     *
     * @param doc    要替换的文档
     * @param params 参数
     */
    public void replaceInTable(XWPFDocument doc, Map<String, Object> params) {
        Iterator<XWPFTable> iterator = doc.getTablesIterator();
        XWPFTable table;
        List<XWPFTableRow> rows;
        List<XWPFTableCell> cells;
        List<XWPFParagraph> paras;
        while (iterator.hasNext()) {
            table = iterator.next();
            rows = table.getRows();
            for (XWPFTableRow row : rows) {
                cells = row.getTableCells();
                for (XWPFTableCell cell : cells) {
                    paras = cell.getParagraphs();
                    for (XWPFParagraph para : paras) {
                        this.replaceInPara(para, params);
                    }
                }
            }
        }
    }

    /**
     * 正则匹配字符串
     *
     * @param str
     * @return
     */
    private Matcher matcher(String str) {
        Pattern pattern = Pattern.compile("\\$\\{(.+?)\\}", Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(str);
        return matcher;
    }

    /**
     * 关闭输入流
     *
     * @param is
     */
    public void close(InputStream is) {
        if (is != null) {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 关闭输出流
     *
     * @param os
     */
    public void close(OutputStream os) {
        if (os != null) {
            try {
                os.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

}

使用方法：

@Action(value = "exportApplyForm")
    public void exportApplyForm() throws Exception {

        String id = request.getParameter("id");
        applyForm = applyFormService.retriveById(id);

        Map<String, Object> params = new HashMap<String, Object>();

        params.put("${name}", applyForm.getName());
        params.put("${sex}", applyForm.getSex());
        params.put("${political}", applyForm.getPolitical());
        params.put("${place}", applyForm.getPlace());
        params.put("${classes}", applyForm.getClasses());
        params.put("${id}", applyForm.getStudentId());
        params.put("${qq}", applyForm.getQq());
        params.put("${tel}", applyForm.getTel());
        params.put("${oldJob}", applyForm.getOldJob());
        params.put("${swap}", applyForm.getSwap());
        params.put("${first}", applyForm.getFirst());
        params.put("${second}", applyForm.getSecond());
        params.put("${award}", applyForm.getAward());
        params.put("${achievement}", applyForm.getAchievement());
        params.put("${advice}", applyForm.getAdvice());
        params.put("${attach}", applyForm.getAttach());

        XwpfTUtil xwpfTUtil = new XwpfTUtil();

        XWPFDocument doc;
        String fileNameInResource = "sta.docx";
        InputStream is;
        /*is = new FileInputStream(filePath);*/
        is = getClass().getClassLoader().getResourceAsStream(fileNameInResource);
        doc = new XWPFDocument(is);

        xwpfTUtil.replaceInPara(doc, params);
        //替换表格里面的变量
        xwpfTUtil.replaceInTable(doc, params);
        OutputStream os = response.getOutputStream();

        response.setContentType("application/vnd.ms-excel");
        response.setHeader("Content-disposition","attachment;filename="+applyForm.getName()+".docx");

        doc.write(os);

        xwpfTUtil.close(os);
        xwpfTUtil.close(is);

        os.flush();
        os.close();
    }

这个是word模板闻文件

从图片中可以看出，就是替换掉制定字符串的功能，最后将文件流输出到客户端浏览器供下载。

这里还需要导入poi依赖，我这里是使用maven导入依赖的：

<!--导入操作excel所需要的jar包-->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>
                poi</artifactId>
            <version>3.10-beta2</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.10-beta2</version>
            <type>jar</type>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml-schemas</artifactId>
            <version>3.10-beta2</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-scratchpad</artifactId>
            <version>3.0.2-FINAL</version>
        </dependency>