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Java下載報表有多個sheet的情況

效果如下圖所示

在這裡插入圖片描述 在這裡插入圖片描述 在這裡插入圖片描述

程式碼片

package com.service.impl;

import java.io.OutputStream; import java.util.ArrayList; import java.util.Collection; import java.util.Iterator; import java.util.List;

import java.util.Map; import java.util.Map.Entry; import java.util.Set;

import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFRichTextString; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.util.HSSFColor; import org.apache.poi.ss.usermodel.Cell; import org.drools.core.rule.From;

public class ExportExcelUtils { /** * @Title: exportExcel * @Description: 匯出Excel的方法 * @author: evan @ 2014-01-09 * @param workbook * @param sheetNum (sheet的位置,0表示第一個表格中的第一個sheet) * @param sheetTitle (sheet的名稱) * @param headers (表格的標題) * @param result (表格的資料) * @param out (輸出流) * @throws Exception */ public void exportExcel(HSSFWorkbook workbook, int sheetNum, String sheetTitle, String[] headers, List<List> result, OutputStream out) throws Exception { // 生成一個表格 HSSFSheet sheet = workbook.createSheet(); // 設定表格預設列寬度為20個位元組 // workbook.setSheetName(sheetNum, sheetTitle, // HSSFWorkbook.ENCODING_UTF_16); workbook.setSheetName(sheetNum, sheetTitle); sheet.setDefaultColumnWidth((short) 20); // 生成一個樣式 HSSFCellStyle style = workbook.createCellStyle(); // 設定這些樣式 style.setFillForegroundColor(HSSFColor.PALE_BLUE.index); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setBorderTop(HSSFCellStyle.BORDER_THIN); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 生成一個字型 HSSFFont font = workbook.createFont(); font.setColor(HSSFColor.BLACK.index); font.setFontHeightInPoints((short) 12); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字型應用到當前的樣式 style.setFont(font);

	// 指定當單元格內容顯示不下時自動換行
	style.setWrapText(true);

	// 產生表格標題行
	HSSFRow row = sheet.createRow(0);
	for (int i = 0; i < headers.length; i++) {
		HSSFCell cell = row.createCell((short) i);
	
		cell.setCellStyle(style);
		HSSFRichTextString text = new HSSFRichTextString(headers[i]);
		cell.setCellValue(text.toString());
	}
	// 遍歷集合資料,產生資料行
	if (result != null) {
		int index = 1;
		for (List<String> m : result) {
			row = sheet.createRow(index);
			int cellIndex = 0;
			for (String str : m) {
				HSSFCell cell = row.createCell((short) cellIndex);
				cell.setCellValue(str.toString());
				cellIndex++;
			}
			index++;
		}
	}
}

public void exportExcel1(HSSFWorkbook workbook, int sheetNum,
		String sheetTitle, String[] headers, List<Map<String, Object>> result,
		OutputStream out) throws Exception {
	// 生成一個表格
	HSSFSheet sheet = workbook.createSheet();
	// 設定表格預設列寬度為20個位元組

// workbook.setSheetName(sheetNum, sheetTitle, // HSSFWorkbook.ENCODING_UTF_16); workbook.setSheetName(sheetNum, sheetTitle); sheet.setDefaultColumnWidth((short) 20); // 生成一個樣式 HSSFCellStyle style = workbook.createCellStyle(); // 設定這些樣式 style.setFillForegroundColor(HSSFColor.PALE_BLUE.index); style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); style.setBorderBottom(HSSFCellStyle.BORDER_THIN); style.setBorderLeft(HSSFCellStyle.BORDER_THIN); style.setBorderRight(HSSFCellStyle.BORDER_THIN); style.setBorderTop(HSSFCellStyle.BORDER_THIN); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 生成一個字型 HSSFFont font = workbook.createFont(); font.setColor(HSSFColor.BLACK.index); font.setFontHeightInPoints((short) 12); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); // 把字型應用到當前的樣式 style.setFont(font);

	// 指定當單元格內容顯示不下時自動換行
	style.setWrapText(true);

	// 產生表格標題行
	HSSFRow row = sheet.createRow(0);
	for (int i = 0; i < headers.length; i++) {
		HSSFCell cell = row.createCell((short) i);
		cell.setCellStyle(style);
		HSSFRichTextString text = new HSSFRichTextString(headers[i]);
		cell.setCellValue(text.toString());
	}
	// 遍歷集合資料,產生資料行
	if (result != null) {
		//迴圈新增資料行
		int index = 1;
		for (Map<String, Object> map : result) {
			row = sheet.createRow(index);
			//迴圈新增資料列
			int cellIndex = 0;
	    	//通過map.entrySet()方法
			//方法一:迴圈map裡面的每一對鍵值對,然後獲取key和value
	    	List<String> str1= null;
			for(Entry<String, Object> vo : map.entrySet()){
				vo.getKey();
				vo.getValue();
				str1=(List)vo.getValue();
				str1.add(0, vo.getKey());
				
			}
			for (int i = 0; i < str1.size(); i++) {
				HSSFCell cell = row.createCell((short) cellIndex);
				cell.setCellValue(String.valueOf(str1.get(i)));
				cellIndex++;
				
			}
			index++;
			}
		}
}

}

程式碼片

package com.service.impl;

import java.io.FileOutputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List;

import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.springframework.beans.factory.annotation.Autowired;

import com.bean.ModelBaseReport; import com.dao.ModelBaseReportDao; import com.util.SheetBean;

public class PoiTest {

@SuppressWarnings("unchecked")
public static void main(String[] args) {
	try {
		OutputStream out = new FileOutputStream("D:\\test.xls");
		List<List<String>> data = new ArrayList<List<String>>();
		
		List<List<String>> data1 = new ArrayList<List<String>>();
		
		List<List<String>> data2 = new ArrayList<List<String>>();
		List rowData = new ArrayList();
		rowData.add("0");
		rowData.add("東霖柏鴻");
		data.add(rowData);
		data1.add(rowData);

// data2.addAll(data); // data2.addAll(data1);

// for (int i = 0; i < data2.size(); i++) { // List rowData = new ArrayList(); // rowData.add(String.valueOf(i)); // rowData.add(“東霖柏鴻”); // data.add(rowData); // } // String[] headers = { “ID”, “使用者名稱” }; // String[] headers1 = { “id”, “使用者名稱” }; // String[] headers2 = { “編號”, “使用者名稱” }; // ExportExcelUtils eeu = new ExportExcelUtils(); // HSSFWorkbook workbook = new HSSFWorkbook(); // eeu.exportExcel(workbook, 0, “上海”, headers, data1, out); // eeu.exportExcel(workbook, 1, “深圳”, headers1, data, out); // eeu.exportExcel(workbook, 2, “廣州”, headers2, data, out);

		List<ModelBaseReport> modelBaseReports = new ArrayList<ModelBaseReport>();

// clientList.add(accountNum); // modelRateList.add(avgProb); // modelScoreList.add(avgScore); // modelPSIList.add(PSI); // modelKSList.add(KS);

		ModelBaseReport mReport = new ModelBaseReport();
		mReport.setReportDate("20181107");
		mReport.setAccountNum("100");
		mReport.setAvgProb("100.01");
		mReport.setAvgScore("50.47");
		mReport.setPSI("0.0400");
		mReport.setKS("0.0300");
		ModelBaseReport mReport1 = new ModelBaseReport();
		mReport1.setReportDate("20181106");
		mReport1.setAccountNum("100");
		mReport1.setAvgProb("100.01");
		mReport1.setAvgScore("50.47");
		mReport1.setPSI("0.0400");
		mReport1.setKS("0.0300");
		
		ModelBaseReport mReport2 = new ModelBaseReport();
		mReport2.setReportDate("20181105");
		mReport2.setAccountNum("100");
		mReport2.setAvgProb("100.01");
		mReport2.setAvgScore("50.47");
		mReport2.setPSI("0.0400");
		mReport2.setKS("0.0300");
		
		modelBaseReports.add(0, mReport);
		modelBaseReports.add(1, mReport1);
		modelBaseReports.add(2, mReport2);
		
		//模型結果list
		List<Map<String, Object>> modelbaseResultList = new ArrayList<>();
		//模型KS
		List<Map<String, Object>> modelbaseKSList = new ArrayList<>();
		//模型PSI
		List<Map<String, Object>> modelbasePSIList = new ArrayList<>();
		//建立欄位集合
		List<String> clientList = new ArrayList<>();
		List<String> modelRateList = new ArrayList<>();
		List<String> modelScoreList = new ArrayList<>();
		List<String> modelPSIList = new ArrayList<>();
		List<String> modelKSList = new ArrayList<>();
		List<String> dateList = new ArrayList<>();
		if (modelBaseReports != null && modelBaseReports.size() != 0) {
			Map<String, Object> dateMap = new HashMap<>();
			for(ModelBaseReport modelBaseReport : modelBaseReports) {
				String reportDate = modelBaseReport.getReportDate();
				if (!dateList.contains(reportDate)) {
					dateList.add(reportDate);
				}
			}
			Collections.sort(dateList);
			dateMap.put("日期", dateList);
			//modelbaseResultList.add(dateMap);

// modelbasePSIList.add(dateMap); // modelbaseKSList.add(dateMap); //建立map Map<String, Object> clientMap = new HashMap<>(); Map<String, Object> modelRateMap = new HashMap<>(); Map<String, Object> modelScoreMap = new HashMap<>(); Map<String, Object> modelPSIMap = new HashMap<>(); Map<String, Object> modelKSMap = new HashMap<>(); //再迴圈日期集合 for(String reportDate : dateList) { for(ModelBaseReport modelBaseReport : modelBaseReports) { String date = modelBaseReport.getReportDate(); String accountNum = modelBaseReport.getAccountNum(); String avgProb = modelBaseReport.getAvgProb()+"%"; String avgScore = modelBaseReport.getAvgScore(); String PSI=modelBaseReport.getPSI(); String KS=modelBaseReport.getKS()+"%"; if (reportDate.equals(date)) { clientList.add(accountNum); modelRateList.add(avgProb); modelScoreList.add(avgScore); modelPSIList.add(PSI); modelKSList.add(KS); } } } clientMap.put(“客戶數”, clientList); modelRateMap.put(“模型概率”, modelRateList); modelScoreMap.put(“模型分數”, modelScoreList); modelPSIMap.put(“PSI”,modelPSIList); modelKSMap.put(“KS”,modelKSList); modelbaseResultList.add(clientMap); modelbaseResultList.add(modelRateMap); modelbaseResultList.add(modelScoreMap); modelbasePSIList.add(modelPSIMap); modelbaseKSList.add(modelKSMap); }

// String[] headers = { “ID”, “使用者名稱” }; // String[] headers1 = { “id”, “使用者名稱” }; // String[] headers2 = { “編號”, “使用者名稱” }; ExportExcelUtils eeu = new ExportExcelUtils(); HSSFWorkbook workbook = new HSSFWorkbook(); eeu.exportExcel1(workbook, 0, “模型結果”, getTitle(dateList), modelbaseResultList, out); eeu.exportExcel1(workbook, 1, “模型KS”, getTitle(dateList), modelbaseKSList, out); eeu.exportExcel1(workbook, 2, “模型PSI”, getTitle(dateList), modelbasePSIList, out);

		//原理就是將所有的資料一起寫入,然後再關閉輸入流。
		workbook.write(out);
		out.close();
	} catch (Exception e) {
		e.printStackTrace();
	}
}


private static String[] getTitle(List<String> dateList){
	String[] inputVariableTitleplate = new String[dateList.size()+1];
	inputVariableTitleplate[0] = "日期";
	for (int i = 0; i < dateList.size(); i++) {
		inputVariableTitleplate[i+1]=dateList.get(i);
	}
	return inputVariableTitleplate;
}

}