前言：使用代码生成excel主要用于比较简单设计的excel,如需使用比较复杂的excel报表导出可看另外一篇文章

一.导入jar包

        <dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-base</artifactId><version>3.0.3</version><exclusions><exclusion><artifactId>commons-lang3</artifactId><groupId>org.apache.commons</groupId></exclusion><exclusion><artifactId>guava</artifactId><groupId>com.google.guava</groupId></exclusion></exclusions></dependency>

二.代码应用

导出的实体类属性(可利用@Excel设置单元格属性)

package com.xinke.sunshine_ebid.dal.entity;import cn.afterturn.easypoi.excel.annotation.Excel;
import lombok.Data;@Data
public class TestEntity {@Excel(name = "姓名", orderNum = "1", width = 15)private String name;@Excel(name = "电话", orderNum = "2", width = 20)private String phone;@Excel(name = "地址", orderNum = "3", width = 30)private String address;
}

控制层

package com.xinke.sunshine_ebid.webapp;import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.entity.TemplateExportParams;
import com.xinke.sunshine_ebid.common.utils.EasyPoiUtils;
import com.xinke.sunshine_ebid.dal.entity.TestEntity;
import com.xinke.sunshine_ebid.service.TestService;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.util.List;
import java.util.Map;@CrossOrigin
@RestController
@RequestMapping(value = "/Test")
public class TestController {@Resourceprivate TestService testService;/*** 使用过代码直接生成excel表格* @param response* @throws Exception*/@GetMapping("/test")public void test(HttpServletResponse response) throws Exception{List<TestEntity> data = testService.test();EasyPoiUtils.exportExcel(data, null, "设置的表格名称", TestEntity.class,"设置的文件名称",response);}
}

业务逻辑层

package com.xinke.sunshine_ebid.service;import com.xinke.sunshine_ebid.dal.entity.TestEntity;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
@Service
public class TestService {public List<TestEntity> test() throws Exception{// 封装参数List<TestEntity> list = new ArrayList<>();TestEntity test = new TestEntity();test.setName("瓜");test.setPhone("18888888888");test.setAddress("PD");list.add(test);TestEntity test2 = new TestEntity();test2.setName("瓜2");test2.setPhone("1999999999");test2.setAddress("PD2");list.add(test2);return list;}
}

三.测试

调用接口

localhost:8087/Test/test

导出成功