今天记录一下基于Hutool的poi导出excel表格，这次代码是升级更新版本的代码。推荐各位收藏
1.先看导出excel模版截图
2.准备环境
我贴出整个的pom文件，如果不需要的，可以根据自己要求进行删减
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.liu</groupId>
<artifactId>test-springboot</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.8.21</version>
</dependency>
<!--mp依赖-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.2.0</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
<!--druid-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.21</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>5.2.2</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>5.2.3</version>
<exclusions>
<!-- 排除老旧Xalan处理器 -->
<exclusion>
<groupId>xalan</groupId>
<artifactId>xalan</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>4.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.xmlbeans</groupId>
<artifactId>xmlbeans</artifactId>
<version>5.1.1</version>
</dependency>
<dependency>
<groupId>com.deepoove</groupId>
<artifactId>poi-tl</artifactId>
<version>1.11.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>4.11.0</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.10.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>net.coobird</groupId>
<artifactId>thumbnailator</artifactId>
<version>0.4.20</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk18on</artifactId>
<version>1.80</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>3.完整的测试代码
package com.liuyang;
import cn.hutool.poi.excel.ExcelUtil;
import cn.hutool.poi.excel.ExcelWriter;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.jdbc.core.JdbcTemplate;
import java.io.FileOutputStream;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
@SpringBootTest
public class AppTest
{
@Autowired
private JdbcTemplate jdbcTemplate;
// 阶段1
@Test
public void test() throws IOException {
// 1. 强制使用兼容的XML处理器
System.setProperty("javax.xml.transform.TransformerFactory",
"com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactoryImpl");
String sql = "SELECT \n" +
" b.bjmc,\n" +
" c.ygxm,\n" +
" MAX(CASE WHEN d.homework_id = 8 THEN d.homework_score END) AS \"ES6\",\n" +
" MAX(CASE WHEN d.homework_id = 10 THEN d.homework_score END) AS \"VUE\",\n" +
"\t\tMAX(CASE WHEN d.homework_id = 14 THEN d.homework_score END) AS \"Form\",\n" +
"\t\tMAX(CASE WHEN d.homework_id = 17 THEN d.homework_score END) AS \"Bigtable\",\n" +
"\t\tMAX(CASE WHEN e.exam_id = 2 THEN e.exam_score END) AS \"exam_1\",\n" +
"\t\tMAX(CASE WHEN e.exam_id = 1 THEN e.exam_score END) AS \"exam_2\",\n" +
"\t\tMAX(CASE WHEN f.proj_id = 5 THEN f.proj_score END) AS \"proj\",\n" +
"\t\tMAX(CASE WHEN g.course_id = 1 THEN g.course_score END) AS \"summary\"\n" +
"FROM \n" +
" yhykt_gp_trainee_class_relative a\n" +
" JOIN yhykt_gp_classes b ON a.bjbh = b.bjbh\n" +
" JOIN yhykt_gp_trainee c ON a.ygbh = c.ygbh\n" +
" JOIN yhykt_gp_trainee_homework d ON c.ygbh = d.ygbh AND b.bjbh = d.bjbh\n" +
"\t\tJOIN yhykt_gp_trainee_exam e on c.ygbh = e.ygbh and b.bjbh = e.bjbh\n" +
"\t\tJOIN yhykt_gp_trainee_project f on c.ygbh = f.ygbh and b.bjbh = f.bjbh\n" +
"\t\tJOIN yhykt_gp_trainee_course_relative g on c.ygbh = g.ygbh and b.bjbh = g.bjbh\n" +
"WHERE \n" +
" b.bjbh = '202306280000001'\n" +
" AND d.homework_id IN (8, 10, 14, 17)\n" +
"\t\tand e.exam_id in (2,1)\n" +
"\t\tand f.proj_id in (5)\n" +
"\t\tand g.course_id in (1)\n" +
"GROUP BY \n" +
" b.bjmc, c.ygxm, g.course_score\n" +
"ORDER BY \n" +
" g.course_score desc, b.bjmc, c.ygxm;";
// 使用 try-with-resources 自动关闭资源
// 使用getBigWriter()创建支持大数据量的XLSX格式写入器
try (ExcelWriter writer = ExcelUtil.getBigWriter();
FileOutputStream outputStream = new FileOutputStream("D:/阶段1.xlsx")) {
// 写入表头
writer.writeRow(Arrays.asList("班级编号", "姓名", "ES6作业", "VUE作业", "Form作业", "table作业", "作业汇总", "前端笔试", "1阶段项目", "1阶段汇总"));
// 查询数据
List<Map<String, Object>> maps = jdbcTemplate.queryForList(sql);
// 写入数据行
for (Map<String, Object> map : maps) {
BigDecimal exam_1 = (BigDecimal) map.get("exam_1");
BigDecimal exam_2 = (BigDecimal) map.get("exam_2");
BigDecimal es6 = (BigDecimal) map.get("ES6");
BigDecimal vue = (BigDecimal) map.get("VUE");
BigDecimal bigtable =(BigDecimal)map.get("Bigtable");
writer.writeRow(Arrays.asList(
map.get("bjmc"),
map.get("ygxm"),
map.get("ES6"),
map.get("VUE"),
map.get("Form"),
map.get("Bigtable"),
es6.multiply(new BigDecimal("0.3")).add(vue.multiply(new BigDecimal("0.3"))).add(bigtable.multiply(new BigDecimal("0.4"))),
exam_1,
map.get("proj"),
map.get("summary")
));
}
// 刷新到文件
writer.flush(outputStream, true);
} // 自动关闭 writer 和 outputStream
}
}