開發中遇到系統自動出常用證明的需求，例如某在校大學生要求學校開具在校證明，這類證明數量大格式統一，使用程式碼如何實現。

一、設定word模板

下圖中紅色部分就是要動態變化的。

模板存放位置

二、依賴破pom檔案

  <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、編寫java程式碼

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","張三");
            map.put("num","123456");
            getBuild("doc/在校證明.doc",map,"E:/在校證明1.doc");
        }

        /*
          tmpFile:模板存放的位置
          contentMap:向模板中放入的引數
          exportFile:模板中放入引數後的檔案存放位置
         
 
*/
        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();
            }
            // 讀取文字內容
            Range bodyRange = document.getRange();
            // 替換內容
            for (Map.Entry<String, String> entry : contentMap.entrySet()) {
                bodyRange.replaceText("${" + entry.getKey() + "}", entry.getValue());
            }

            //匯出到檔案
            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