java根据word模板生成word文档_根据Word模板生成Word文件 (JAVA POI)

需求

通过提前准备的word模板，渲染填充数据，生成新的加工好的word文件。(也试过使用Freemarker渲染数据，但是有个很大的弊端：使用Freemarker渲染的后文件会变大)

用法

POI的Maven依赖

org.apache.poi

poi

3.8

需要将模板参数设置成如下格式, 另存为word文档即可

直接放代码，仅供参考

import com.cloudlead.common.worker.client.exception.RestClientException;

import org.apache.commons.lang.StringUtils;

import org.apache.poi.openxml4j.opc.OPCPackage;

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

import org.apache.xmlbeans.XmlOptions;

import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTBody;

import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTText;

import java.io.*;

import java.util.*;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

/*

*

* 文档处理类

*

* */

public class WordTemplateUtil {

/*从word模板 渲染参数 获取word文档

* template 模板文件 params 参数 outputStream 输出流,

*/

public static void wordRenderAndGetFromWordTemplate(File template, Mapparams, OutputStream outputStream)throws Exception{

FileInputStream inputStream = new FileInputStream(template);

XWPFDocument templateDoc = new XWPFDocument(inputStream);

produce(templateDoc,params);

templateDoc.write(outputStream);

}

/* 处理参数 生成doc */

public static void produce(XWPFDocument templateDoc,Mapparams){

Iteratoriterator = templateDoc.getParagraphsIterator();

while(iterator.hasNext()){

XWPFParagraph next = iterator.next();

if (next.isEmpty()||!match(next.getParagraphText())){

continue;

}

next.getRuns().forEach(

run -> setNewTextforRun(run,params)

);

}

}

/*

* 正则匹配 返回 matcher

* */

public static Matcher matcher(String text){

Pattern pattern = Pattern.compile("\\$\\{(.+?)}", Pattern.CASE_INSENSITIVE);

return pattern.matcher(text);

}

/*

* 判定是否包匹配

* */

public static boolean match(String text){

Matcher matcher = matcher(text);

return matcher.find();

}

/*

* 替换参数 设置新参数

* */

public static void setNewTextforRun(XWPFRun run,Mapparams){

ListctTexts = run.getCTR().getTList();

ctTexts.forEach(

ctText->{

String text = ctText.getStringValue();

Matcher matcher = matcher(text);

while(matcher.find()){

String group = matcher.group();

if (group.contains(" ")){

throw new RestClientException("${}表达式不能包含空格");

}

String name = group.substring(2, group.length()-1);

String value = params.get(name);

value = value==null?"":value;

if (text.equals(group)){

text=value;

}else{

//转义

String[] parts = text.split("\\$\\{"+name+"}");

//length=1 分前后 设置参数值

if (parts.length==1){

String part = parts[0];

text = text.indexOf(part)==0?(part+value):(value+part);

}else{

text = StringUtils.join(parts,value);

}

}

}

ctText.setStringValue(text);

}

);

}

}

调用代码示例

@GetMapping("/templateExport")

public void exportContractFromTemplate() throws Exception{

/*设置参数*/

Mapparams = new HashMap<>();

params.put("partyA","华为");

params.put("partyB","新浪");

params.put("contractNo","NO2019100506")

params.put("signTime","2019年10月05日");

String templatePath = "C:\\Users\\Administrator\\Desktop\\template.docx";

response.setHeader("Content-Disposition", "attachment;filename=out.doc");

response.setContentType("'application/msword';charset=UTF-8");

response.setCharacterEncoding("UTF-8");

WordTemplateUtil.wordRenderAndGetFromWordTemplate(

new File(templatePath ), params, response.getOutputStream()

);

}