做网站导航一般字号是多少,可以登陆的wordpress,修改wordpress用户名密码忘记,学校网站在哪里找在用java 写数据库应用的时候, 通常会生成各种报表#xff0c;而这些报表可能会被导出为各种格式的文件#xff0c;比如Excel文档#xff0c;pdf 文档等等. 今天先做了一个生成Excel 文档的例子#xff0c;主要解决以下问题#xff1a; 1. 生成 Excel 文档. 2. 自动对生成…在用java 写数据库应用的时候, 通常会生成各种报表而这些报表可能会被导出为各种格式的文件比如Excel文档pdf 文档等等. 今天先做了一个生成Excel 文档的例子主要解决以下问题 1. 生成 Excel 文档. 2. 自动对生成的Excel 文档第一行标题栏设置成filter 过滤形式, 方便用户使用. 导入依赖
!--依赖的jar包--
dependencygroupIdorg.apache.poi/groupIdartifactIdpoi/artifactIdversion3.9/version
/dependency
dependencygroupIdorg.apache.poi/groupIdartifactIdpoi-ooxml/artifactIdversion3.9/version
/dependency Excel转换通用类
package com.kingbal.king.dmp;import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
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.apache.poi.ss.usermodel.Row;import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;/*** bFunction: /b todo** program: ExcelUtil* Package: com.kingbal.king.dmp* author: dingcho* date: 2023/12/30* version: 1.0* Copyright: 2023 www.kingbal.com Inc. All rights reserved.*/
public class ExcelUtilT {public HSSFCellStyle getCellStyle(HSSFWorkbook workbook, boolean isHeader) {HSSFCellStyle style workbook.createCellStyle();style.setBorderBottom(HSSFCellStyle.BORDER_THIN);style.setBorderLeft(HSSFCellStyle.BORDER_THIN);style.setBorderRight(HSSFCellStyle.BORDER_THIN);style.setBorderTop(HSSFCellStyle.BORDER_THIN);style.setLocked(true);if (isHeader) {style.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index);style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);HSSFFont font workbook.createFont();font.setColor(HSSFColor.BLACK.index);font.setFontHeightInPoints((short) 12);font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);style.setFont(font);}return style;}public void generateHeader(HSSFWorkbook workbook, HSSFSheet sheet, String[] headerColumns) {HSSFCellStyle style getCellStyle(workbook, true);Row row sheet.createRow(0);row.setHeightInPoints(30);for (int i 0; i headerColumns.length; i) {Cell cell row.createCell(i);String[] column headerColumns[i].split(_#_);sheet.setColumnWidth(i, Integer.valueOf(column[1]));cell.setCellValue(column[0]);cell.setCellStyle(style);}}SuppressWarnings({rawtypes, unchecked})public HSSFSheet creatAuditSheet(HSSFWorkbook workbook, String sheetName,ListT dataset, String[] headerColumns, String[] fieldColumns)throws NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {HSSFSheet sheet workbook.createSheet(sheetName);sheet.protectSheet();generateHeader(workbook, sheet, headerColumns);HSSFCellStyle style getCellStyle(workbook, false);SimpleDateFormat sd new SimpleDateFormat(yyyy-MM-dd);int rowNum 0;for (T t : dataset) {rowNum;Row row sheet.createRow(rowNum);row.setHeightInPoints(25);for (int i 0; i fieldColumns.length; i) {String fieldName fieldColumns[i];String getMethodName get fieldName.substring(0, 1).toUpperCase() fieldName.substring(1);try {Class clazz t.getClass();Method getMethod;getMethod clazz.getMethod(getMethodName, new Class[]{});Object value getMethod.invoke(t, new Object[]{});String cellValue ;// 对于某些特定类型进行转换if (value instanceof Date) {Date date (Date) value;cellValue sd.format(date);} else {cellValue null ! value ? value.toString() : ;}Cell cell row.createCell(i);cell.setCellStyle(style);cell.setCellValue(cellValue);} catch (Exception e) {}}}return sheet;}}根据需求调用
public static void main(String[] args) {MapString, Object param Maps.newHashMap();param.put( callType, CALL_IN );// 获取您对应查询的字段ListCdr cdrList cdrService.queryListByParam(param);String [] cdrInColumns new String[]{呼入时间_#_3000 ,挂断时间_#_3000 ,座席工号_#_3000 ,座席姓名_#_3000 ,呼入时长秒_#_3000 ,IVR时长秒_#_3000 ,排队时长秒_#_3000 ,通话时长秒_#_3000 ,归属地_#_3000 ,满意度调查_#_3000};String [] cdrInFields new String []{callTime,hangupTime ,src ,workNo ,trueName ,totalLength ,ivrLength ,queueLength,datlLength ,city ,ivrKey};HSSFWorkbook workbook new HSSFWorkbook();ExcelUtilCdr cdrSheet new ExcelUtilCdr();cdrSheet.creatAuditSheet(workbook, 呼出信息 , cdrList, cdrInColumns, cdrInFields);ByteArrayOutputStream os new ByteArrayOutputStream();workbook.write(os);InputStream inputStream new ByteArrayInputStream(os.toByteArray());// 获取文件长度 inputStream.available()}
}
