java普通导出Excel文件

后台查出来数据直接生成Excel文件然后输出
用到的依赖


commons-fileupload
commons-fileupload
1.3.1



com.alibaba
easyexcel
2.2.6


javax.servlet
servlet-api


org.apache.poi
poi


org.apache.poi
poi-ooxml


org.apache.poi
poi-ooxml-schemas



实体类

import com.alibaba.excel.annotation.ExcelProperty;
import io.swagger.annotations.ApiModel;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;
import java.math.BigDecimal;

@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
@ApiModel(description = “房屋信息导出”)
public class ExportFwxxglVo implements Serializable {

private static final long serialVersionUID = 1L;

@ExcelProperty(index = 0, value = "房屋管理类型")
private Integer fwgllx;

@ExcelProperty(index = 1, value = "房屋类别")
private Integer fwlb;

@ExcelProperty(index = 2, value = "土地性质")
private Integer tdxz;

@ExcelProperty(index = 3, value = "安全状态")
private Integer aqzt;

@ExcelProperty(index = 4, value = "房屋状态")
private Integer fwzt;

@ExcelProperty(index = 5, value = "房屋来源")
private Integer fwly;

@ExcelProperty(index = 6, value = "建筑面积")
private BigDecimal jzmj;

@ExcelProperty(index = 7, value = "房屋朝向")
private String fwcx;

@ExcelProperty(index = 8, value = "管理单位")
private String gldw;

@ExcelProperty(index = 9, value = "房屋地址")
private String fwdz;

@ExcelProperty(index = 10, value = "使用人")
private String syr;

@ExcelProperty(index = 11, value = "划拨的更新项目名称")
private String hbdgxxmmc;

@ExcelProperty(index = 12, value = "编码")
private String rid;

}

    **控制层**
        
      @PostMapping("/exportFwxxgl")
@ApiOperation(value = "房屋信息导出", notes = "房屋信息导出")
public void exportFwxxgl(@RequestBody DzglRids rids, HttpServletResponse response) throws IOException {

    ExcelExportUtil.setResponse(response);
    String filename = ExcelExportUtil.getExcelName("房屋信息管理列表数据", ".xlsx");
    response.addHeader("Content-Disposition", "attachment; filename*=UTF-8''" + filename);
    fwxxglService.exportFwxxgl(rids, response.getOutputStream());
}
**业务层**
 
@Override
public void exportFwxxgl(DzglRids rids, OutputStream outputStream) {
    if (rids == null) {
        throw new ApplicationException(CommonErrorCode.ERROR_ARGUMENT_NUM, "导出失败");
    }
    if (CollectionUtils.isEmpty(rids.getListRid())) {
        throw new ApplicationException(CommonErrorCode.ERROR_ARGUMENT_NUM, "导出失败");
    }
    QueryWrapper query = new QueryWrapper<>();
    query.in("rid", rids.getListRid());
    query.select("rid", "zt", "fwgllx", "fwlb", "tdxz", "aqzt", "fwzt", "fwly", "jzmj", "fwcx", "gldw", "fwdz", "syr", "hbdgxxmmc");
    List fwxxglList = iFwxxglMapper.selectList(query);
    ArrayList ar = new ArrayList<>();

    for (Fwxxgl fwxxgl : fwxxglList) {
        if (fwxxgl.getZt() == null) {
            throw new ApplicationException(CommonErrorCode.ERROR_ARGUMENT_NUM, "导出失败");
        }
        if (fwxxgl.getZt() != 2) {
            throw new ApplicationException(CommonErrorCode.ERROR_ARGUMENT_NUM, "审核未通过,导出失败");
        }
        ExportFwxxglVo exportFwxxglVo = new ExportFwxxglVo();
        BeanUtils.copyProperties(fwxxgl, exportFwxxglVo);
        ar.add(exportFwxxglVo);
    }

    ExcelWriter excelWriter = null;
    try {
        excelWriter = EasyExcel.write(new BufferedOutputStream(outputStream)).build();
        //list = Lists.newArrayList(list);
        exportExcel(excelWriter, 0, "房屋信息管理列表数据", ar, ExportFwxxglVo.class);
        log.info("导出成功");
    } catch (Exception e) {
        log.error("项目导出异常", e);
        throw new RuntimeException("项目导出文件失败:" + e.getMessage());
    } finally {
        if (excelWriter != null) {
            excelWriter.finish();
        }
    }


}


private void exportExcel(ExcelWriter excelWriter, Integer sheetNo, String sheetName, List dataList, Class object) {
    WriteSheet writeSheet = EasyExcel.writerSheet(sheetNo, sheetName)
            .head(object)
            .build();
    excelWriter.write(dataList, writeSheet);
}