package com.whyc.service;
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import com.whyc.pojo.db_batt_testdata.BatttestdataId;
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import com.whyc.util.ActionUtil;
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import org.apache.poi.ss.usermodel.*;
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import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.MediaType;
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import org.springframework.stereotype.Service;
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import javax.servlet.http.HttpServletResponse;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.net.URLEncoder;
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import java.util.List;
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@Service
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public class ExcelExportService {
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@Autowired(required = false)
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private SubTablePageInfoService subService;
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//导出文件
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public void exportExcel(Integer devId, Integer testRecordCount,HttpServletResponse response) {
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Workbook workbook = new XSSFWorkbook();
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Sheet sheet = workbook.createSheet("设备历史数据");
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String[] titiles=new String[]{"测试时间","电池组编号","单体编号","测试次数","测试类型","测试容量"
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,"组端电压(V)","测试电流(A)","测试容量(AH)","单体电压(V)","单体温度(℃)"
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,"单体电流(A)","单体容量(AH)","单体能量","单体状态","故障信息"};
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int rowNum=0;
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// 创建标题行
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Row row = sheet.createRow(rowNum);
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// 填充数据
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for(int i=0;i<titiles.length;i++){
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row.createCell(i).setCellValue(titiles[i]);
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}
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rowNum++;
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List<BatttestdataId> list=subService.getTdataById(devId,testRecordCount);
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if(list!=null){
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//数据栏
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for (int i = 0; i < list.size(); i++) {
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sheet.createRow(rowNum); //创建行
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BatttestdataId tdata=list.get(i);
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for(int j=0;j<titiles.length;j++){
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sheet.getRow(rowNum).createCell(0 ).setCellValue(ActionUtil.secToTime(tdata.getTestTimelong()));
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sheet.getRow(rowNum).createCell(1).setCellValue(tdata.getBattIdx()+1);
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sheet.getRow(rowNum).createCell(2 ).setCellValue(tdata.getMonNum());
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sheet.getRow(rowNum).createCell(3).setCellValue(tdata.getTestRecordCount());
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sheet.getRow(rowNum).createCell(4).setCellValue(tdata.getTestType());
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sheet.getRow(rowNum).createCell(5).setCellValue(tdata.getRecordNum());
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sheet.getRow(rowNum).createCell(6).setCellValue(tdata.getGroupVol());
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sheet.getRow(rowNum).createCell(7).setCellValue(tdata.getTestCurr());
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sheet.getRow(rowNum).createCell(8).setCellValue(tdata.getTestCap());
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sheet.getRow(rowNum).createCell(9 ).setCellValue(tdata.getMonVol());
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sheet.getRow(rowNum).createCell(10 ).setCellValue(tdata.getMonTmp());
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sheet.getRow(rowNum).createCell(11 ).setCellValue(tdata.getMonCurr());
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sheet.getRow(rowNum).createCell(12 ).setCellValue(tdata.getMonCap());
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sheet.getRow(rowNum).createCell(13 ).setCellValue(tdata.getMonWh());
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sheet.getRow(rowNum).createCell(14 ).setCellValue(tdata.getMonState());
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sheet.getRow(rowNum).createCell(15 ).setCellValue(tdata.getMonFault());
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}
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rowNum++;
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}
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}
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try {
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// 写入到输出流
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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workbook.write(byteArrayOutputStream);
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workbook.close();
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// 设置响应头
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String filename = "设备历史数据";
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/*response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="+
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new String(filename.getBytes("UTF-8"), "ISO8859-1")+
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".xlsx");*/
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response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + URLEncoder.encode (filename, "utf-8") + ".xlsx");
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response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
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// 写入响应流并关闭
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response.getOutputStream().write(byteArrayOutputStream.toByteArray());
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response.getOutputStream().flush();
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response.getOutputStream().close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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