开发中遇到系统自动出常用证明的需求，例如某在校大学生要求学校开具在校证明，这类证明数量大格式统一，使用代码如何实现。
一、设置word模板
下图中红色部分就是要动态变化的。
模板存放位置
二、依赖破pom文件
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.15</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-scratchpad</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
三、编写java代码
package com.example.demo; import com.sun.istack.internal.logging.Logger; import org.apache.poi.hwpf.HWPFDocument; import org.apache.poi.hwpf.usermodel.Range; import java.io.*; import java.util.HashMap; import java.util.Map; public class WordTest { private static Logger log= Logger.getLogger(WordTest.class); public static void main(String[] args) { Map map=new HashMap(); map.put("name","张三"); map.put("num","123456"); getBuild("doc/在校证明.doc",map,"E:/在校证明1.doc"); } /* tmpFile:模板存放的位置 contentMap:向模板中放入的参数 exportFile:模板中放入参数后的文件存放位置 */ public static void getBuild(String tmpFile, Map<String, String> contentMap, String exportFile){ InputStream inputStream = WordTest.class.getClassLoader().getResourceAsStream(tmpFile); HWPFDocument document = null; try { document = new HWPFDocument(inputStream); } catch (IOException e) { e.printStackTrace(); } // 读取文本内容 Range bodyRange = document.getRange(); // 替换内容 for (Map.Entry<String, String> entry : contentMap.entrySet()) { bodyRange.replaceText("${" + entry.getKey() + "}", entry.getValue()); } //导出到文件 try { ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); document.write(byteArrayOutputStream); OutputStream outputStream = new FileOutputStream(exportFile); outputStream.write(byteArrayOutputStream.toByteArray()); outputStream.close(); } catch (IOException e) { e.printStackTrace(); } } }
四、效果
原文：https://www.cnblogs.com/yclh/p/14924228.html