下面将Springboot中利用mybatis查询后将结果导出的主要代码总结如下：
一、依赖
使用easyexcel实现导出excel功能
<!-- https://mvnrepository.com/artifact/com.alibaba/easyexcel -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>2.1.6</version>
</dependency>
二、mybatis的xml文件
//查询条件类pers.gl.vo.EmpQuery
package pers.gl.vo;
import java.util.Date;
import org.springframework.format.annotation.DateTimeFormat;
import lombok.Data;
@Data
public class EmpQuery {
private String xm;
@DateTimeFormat(pattern = "yyyy-MM-dd")
private Date startDate;
@DateTimeFormat(pattern = "yyyy-MM-dd")
private Date endDate;
}
<!-- 带有条件的查询 -->
<select id="getEmpList" resultType="pers.gl.model.Emp" parameterType="pers.gl.vo.EmpQuery">
select * from emp
<include refid="getEmpListWhere"></include>
order by id desc
</select>
<sql id="getEmpListWhere">
<where>
<if test="xm != null">
xm like '%' #{xm} '%'
</if>
<if test="startDate != null">
<![CDATA[
and csrq >= #{startDate}
]]>
</if>
<if test="endDate != null">
<![CDATA[
and csrq<= #{endDate}
]]>
</if>
</where>
</sql>
三、Mapper
// 按照条件查询
public List<Emp> getEmpList(EmpQuery empQuery);
四、Service
// excel下载
public void downloadExcel(HttpServletResponse response, EmpQuery empQuery) {
// 设置响应内容
response.setContentType("application/vnd.ms-excel");
response.setCharacterEncoding("UTF-8");// 防止下载的文件名字乱码
try {
// 文件以附件形式下载
response.setHeader("Content-disposition",
"attachment;filename=down_" System.currentTimeMillis() ".xlsx");
// System.out.print(empQuery.toString());
EasyExcel.write(response.getOutputStream(), Emp.class).sheet("文件下载")
.doWrite(empMapper.getEmpList(empQuery));
} catch (Exception e) {
throw new RuntimeException(e);
}
}
五、Controller
@GetMapping("/download2")
public void excelExport02(HttpServletResponse response, EmpQuery empQuery) {
empService.downloadExcel(response, empQuery);
}
六、前端
<a onclick="easyExcelExport2()" target="_blank" class="layui-btn layui-btn-sm">EasyExcel导出测试2</a>
function easyExcelExport2() {
window.location.href=getContextPath() '/emp/download2?' $("#form-search").serialize();
}
感谢一位年轻人对我的指点。
,
