Java POI通过模板方法生成word文档

大家可能看过另一篇博客，这个是博客地址点击打开链接

里面说到使用模板的方式生成word文档，但是给出的代码并没有起效，这里我稍作了修改，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();
}
}
}

}

相比较原文，我这段代码只改了

public void replaceinPara(XWPFParagraph para,Map<String,Object> params>{}

这个函数的实现方式，当然，使用方式也变了，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>