1、Excel使用工具类导出数据

淡淡的烟草味﹌ 2022-05-30 07:25 232阅读 0赞

# 1、js发起导出表单数据请求（参数全部为查询条件，其实就是讲查询条件获取的数据全部导出到excel'） #

![image001.gif][]

$scope.export = function()\{  
  
    if($scope.query.userParam=undefined)\{  
        $scope.query.userParam = '';  
    \}  
    ***window***.open(***ctx ***\+ '/verify/signet/export?status='\+$scope.query.status  
        \+'&startDate='\+$scope.query.startDate  
        \+'&endDate='\+$scope.query.endDate  
        \+'&userParam='\+$scope.query.userParam  
        \+'&page='\+$scope.query.page  
        \+'&pageSize='\+$scope.query.pageSize  
    );  
\};

# 2、contrller接收 #

## 1、查出的数据和分页查出的数据时一样的。 ##

## 2、excel中不能含有java类型的数据Date，所以要将他转化为字符串 ##

## 3、Excel的文件名为 开始时间-结束时间 中的一种 ##

![image002.gif][]

## 4、excel的导出准备 ##

### 1、工作簿的名称 ###

## 2、列的名称，注意和上面的浏览器中看到的一一对应（我这里的用户id和企业名称是两个字段，所以分开放了） ##

### 3、列在实体中的字段名称， ###

## 4、列的宽度 ##

![image003.gif][]

/\*\*  
 \* 导出数据  
 \* @param page  
 \* @param pageSize  
 \* @param query  
 \* @param response  
 \*/  
@RequestMapping("export")  
public void exportData(@RequestParam(defaultValue = "0")Integer page,

@RequestParam(defaultValue = "15")Integer pageSize,  
                       SignetQuery query,

HttpServletResponse response) throws IOException \{  
  
    if (page == null) page = 0;  
    Pageable pageable = new PageRequest(page, pageSize);  
    SysAdminUser user = AppSessionHelper.getSessionUser();  
    List<SignetApplyRecord> signetApplyRecords = verifySignetService.getVerifySignetData(user.getId(), pageable, query);  
  
    for (SignetApplyRecord signetApplyRecord : signetApplyRecords) \{  
        signetApplyRecord.setCtime(DateHelper.convertDate2String(signetApplyRecord.getCdate(), "yyyy.MM.dd HH:mm:ss"));  
    \}  
  
    String fileName = "";

Date startDate = query.getStartDate();  
    Date endDate = query.getEndDate();  
    if (startDate != null && endDate != null) \{  
        fileName = DateHelper.convertDate2String(startDate, DateHelper.***YYYY\_MM\_DD***) \+ "至"  
                \+ DateHelper.convertDate2String(endDate, DateHelper.***YYYY\_MM\_DD***);  
    \} else if (startDate != null) \{  
        fileName = DateHelper.convertDate2String(startDate, DateHelper.***YYYY\_MM\_DD***) \+ "之后";  
    \} else if (endDate != null) \{  
        fileName = DateHelper.convertDate2String(endDate, DateHelper.***YYYY\_MM\_DD***) \+ "之前";  
    \} else \{  
        fileName = "全部时间";  
    \}  
  
    try \{  
        String\[\] columnNames = new String\[\]\{"用户Id",  "企业名称","多点账户","申请人","申请类型","印章类型","备注","状态","申请时间"\};  
        String\[\] dbColumnNames = new String\[\]\{"userId", "userNickName", "remittanceAccountDesc", "applyAdmName", "taskTypeDesc", "typeDesc", "remark","statusDesc","ctime"\};  
        Integer\[\] columnWidths = new Integer\[\]\{ 20, 20, 20, 20, 20, 20, 20, 20, 20\};  
  
        new SimpleExcelExporter(fileName \+ ".xls", "印章申请审核报表", signetApplyRecords)  
                .withHeaders(columnNames)  
                .withContentFields(dbColumnNames)  
                .withColumnWidths(columnWidths)  
                .exportTo(response);  
    \} catch (Exception e) \{  
        logger.error(e.getMessage(), e);  
        response.getWriter().write("导出失败,请联系管理员:" \+ e.getMessage());  
    \}  
\}

# 3、excel工具类 #

package com.duodian.admore.admin.module.report.helper;  
  
import com.duodian.admore.core.helper.HeaderHelper;  
import org.apache.commons.io.IOUtils;  
import org.apache.poi.hssf.usermodel.\*;  
import org.apache.poi.hssf.util.HSSFColor;  
import org.apache.poi.ss.usermodel.\*;  
import org.springframework.beans.BeanWrapper;  
import org.springframework.beans.BeanWrapperImpl;  
  
import javax.servlet.http.HttpServletResponse;  
import java.io.UnsupportedEncodingException;  
import java.math.BigDecimal;  
import java.net.URLEncoder;  
import java.util.List;  
  
/\*\*  
 \* 类描述： 简单excel导出类  
 \* 创建人： j.sh  
 \* 创建时间： 07/02/2017  
 \* version：1.0.0  
 \*/  
public class SimpleExcelExporter \{  
  
    private static final int ***WORD\_UNIT ***= 256;  
  
    private String\[\] headers;  
    private String\[\] contentFields;  
    private Integer\[\] columnWidths;  
  
    private String fileName;  
    private String sheetName;  
    private List content;  
  
    public SimpleExcelExporter(String fileName, String sheetName, List content) \{  
        this.fileName = fileName;  
        this.sheetName = sheetName;  
        this.content = content;  
    \}  
  
    public SimpleExcelExporter withHeaders(String\[\] headers)\{  
        this.headers = headers;  
        return this;  
    \}  
  
    public SimpleExcelExporter withContentFields(String\[\] contentFields)\{  
        this.contentFields = contentFields;  
        return this;  
    \}  
  
    public SimpleExcelExporter withColumnWidths(Integer\[\] columnWidths)\{  
        this.columnWidths = columnWidths;  
        return this;  
    \}  
  
    public void exportTo(HttpServletResponse response) \{  
        if (headers == null || headers.length == 0)\{  
            throw new IllegalArgumentException("headers not set yet");  
        \}  
        if (contentFields == null || contentFields.length == 0)\{  
            throw new IllegalArgumentException("contentFields not set yet");  
        \}  
  
        HSSFWorkbook workbook = null;  
        try \{  
            response.setContentType("APPLICATION/OCTET-STREAM");  
  
            HeaderHelper.setResponseHeader(response,fileName);  
//            response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(fileName, "UTF-8"));  
  
            workbook = new HSSFWorkbook();  
            HSSFSheet sheet = workbook.createSheet(sheetName);  
  
            this.setColumnWidth(sheet);  
            this.createTitle(workbook,sheet);  
            this.createContent(workbook,sheet, content);  
  
            workbook.write(response.getOutputStream());  
        \} catch (Exception e) \{  
            throw new RuntimeException(e.getMessage(), e);  
        \} finally \{  
            IOUtils.closeQuietly(workbook);  
        \}  
    \}  
  
    private HSSFCellStyle createIntegerCellStyle(HSSFWorkbook workbook) \{  
        DataFormat format = workbook.createDataFormat();  
        HSSFCellStyle cellStyle = workbook.createCellStyle();  
        cellStyle.setDataFormat(format.getFormat("\#,\#\#0"));  
        cellStyle.setAlignment(HorizontalAlignment.***RIGHT***);  
        return cellStyle;  
    \}  
  
    private HSSFCellStyle createFloatCellStyle(HSSFWorkbook workbook) \{  
        DataFormat format = workbook.createDataFormat();  
        HSSFCellStyle cellStyle = workbook.createCellStyle();  
        cellStyle.setDataFormat(format.getFormat("\#,\#\#0.00"));  
        cellStyle.setAlignment(HorizontalAlignment.***RIGHT***);  
        return cellStyle;  
    \}  
  
    private HSSFCellStyle createTitleCellStyle(HSSFWorkbook workbook) \{  
        HSSFCellStyle cellStyle = workbook.createCellStyle();  
        Font font = workbook.createFont();  
        cellStyle.setFont(font);  
  
        cellStyle.setFillForegroundColor(HSSFColor.LIME.***index***);  
        cellStyle.setFillPattern(FillPatternType.***THICK\_FORWARD\_DIAG***);  
        cellStyle.setFillBackgroundColor(IndexedColors.***GREY\_25\_PERCENT***.index);  
        return cellStyle;  
    \}  
  
    private void setColumnWidth(HSSFSheet sheet) \{  
        if (columnWidths == null || columnWidths.length == 0)\{  
            for (int i = 0; i < headers.length; i\++) \{  
                sheet.autoSizeColumn(i);  
            \}  
        \} else \{  
            for (int i = 0; i < columnWidths.length; i\++) \{  
                sheet.setColumnWidth(i, columnWidths\[i\] \* ***WORD\_UNIT***);  
            \}  
        \}  
    \}  
  
    private void createTitle(HSSFWorkbook workbook,HSSFSheet sheet) \{  
        HSSFCellStyle titleStyle = this.createTitleCellStyle(workbook);  
  
        HSSFRow row = sheet.createRow(0);  
  
        for (int i = 0; i < headers.length; i\++) \{  
            HSSFCell cell = row.createCell(i);  
            cell.setCellValue(headers\[i\]);  
            cell.setCellStyle(titleStyle);  
        \}  
    \}  
  
    private void createContent(HSSFWorkbook workbook,HSSFSheet sheet, List content) \{  
        HSSFCellStyle integerStyle = this.createIntegerCellStyle(workbook);  
        HSSFCellStyle floatStyle = this.createFloatCellStyle(workbook);  
  
        for (int i = 0; i < content.size(); i\++) \{  
            HSSFRow row = sheet.createRow(i \+ 1); //排除标题行，从1开始  
            BeanWrapper wrapper = new BeanWrapperImpl(content.get(i));  
  
            for (int j = 0; j < contentFields.length; j\++) \{  
                HSSFCell cell = row.createCell(j);  
  
                Object value = wrapper.getPropertyValue(contentFields\[j\]);  
                if (value == null)\{  
                    value = "";  
                \}  
  
                this.setCellValue(cell,value,integerStyle,floatStyle);  
            \}  
        \}  
    \}  
  
    private void setCellValue(HSSFCell cell,Object value,HSSFCellStyle integerStyle,HSSFCellStyle floatStyle)\{  
        if (value instanceof String)\{  
            cell.setCellValue(value.toString());  
        \} else if (value instanceof Integer || value instanceof Long)\{  
            cell.setCellValue(Long.parseLong(value.toString()));  
            cell.setCellStyle(integerStyle);  
        \} else if (value instanceof Float || value instanceof Double || value instanceof BigDecimal)\{  
            cell.setCellValue(Double.parseDouble(value.toString()));  
            cell.setCellStyle(floatStyle);  
        \}  
    \}  
  
\}

# 4、filename文件名输出制作 #

package com.duodian.admore.core.helper;  
  
import javax.servlet.http.HttpServletResponse;  
import java.io.UnsupportedEncodingException;  
import java.net.URLEncoder;  
  
/\*\*  
 \* 类描述：  
 \* 创建人：lishiwei  
 \* 创建时间：2017/8/23  
 \* 修改人：  
 \* 修改时间：  
 \* 修改备注：  
 \*  
 \* @version 1.0.0  
 \*/  
public class HeaderHelper \{  
  
    /\*\*  
     \* <pre>  
     \* 浏览器下载文件时需要在服务端给出下载的文件名，当文件名是ASCII字符时没有问题  
     \* 当文件名有非ASCII字符时就有可能出现乱码  
     \*  
     \* 这里的实现方式参考这篇文章  
     \* http://blog.robotshell.org/2012/deal-with-http-header-encoding-for-file-download/  
     \*  
     \* 最终设置的response header是这样:  
     \*  
     \* Content-Disposition: attachment;  
     \*                      filename="encoded\_text";  
     \*                      filename\*=utf-8''encoded\_text  
     \*  
     \* 其中encoded\_text是经过RFC 3986的“百分号URL编码”规则处理过的文件名  
     \* </pre>  
     \* @param response  
     \* @param filename  
     \* @return  
     \*/  
    public static void setResponseHeader(HttpServletResponse response, String filename) throws UnsupportedEncodingException \{  
        String headerValue = "attachment;";  
        headerValue \+= " filename=\\"" \+ encodeURIComponent(filename) \+"\\";";  
        headerValue \+= " filename\*=utf-8''" \+ encodeURIComponent(filename);  
        response.setHeader("Content-Disposition", headerValue);  
    \}  
  
    /\*\*  
     \* <pre>  
     \* 符合 RFC 3986 标准的“百分号URL编码”  
     \* 在这个方法里，空格会被编码成%20，而不是\+  
     \* 和浏览器的encodeURIComponent行为一致  
     \* </pre>  
     \* @param value  
     \* @return  
     \*/  
    private static String encodeURIComponent(String value) throws UnsupportedEncodingException \{  
        return URLEncoder.encode(value, "UTF-8").replaceAll("\\\\\+", "%20");  
    \}  
\}

[image001.gif]: https://raw.githubusercontent.com/HealerJean123/BlogImage/master/q9UVgWIDZCzuEKJX/image001.gif
[image002.gif]: https://raw.githubusercontent.com/HealerJean123/BlogImage/master/q9UVgWIDZCzuEKJX/image002.gif
[image003.gif]: https://raw.githubusercontent.com/HealerJean123/BlogImage/master/q9UVgWIDZCzuEKJX/image003.gif