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package com.beacon.sms.utils; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletResponse; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.struts2.ServletActionContext; import com.beacon.sms.bean.Address; import com.beacon.sms.bean.Class; import com.beacon.sms.bean.Course; import com.beacon.sms.bean.Score; import com.beacon.sms.bean.Semester; import com.beacon.sms.bean.Student; import com.beacon.sms.bean.Teacher; import com.beacon.sms.bean.Teaching; /** * * 作者:beacon 创建日期:2017年11月8日下午4:21:49 描述:处理Excel的工具类 */ public class ExcelUtil { private String[] headers = { "学年学期", "学号", "姓名", "所在班级", "课程名称", "成绩" }; public List<Student> readStudentExcel(InputStream inputStream) throws IOException { List<Student> list = new ArrayList<Student>(); HSSFWorkbook hssfWorkbook = new HSSFWorkbook(inputStream); Sheet sheet = hssfWorkbook.getSheetAt(0); for (int i = 1; i <= sheet.getLastRowNum(); i++) { Row row = sheet.getRow(i); Student student = new Student(); student.setStudentName(row.getCell(0).getStringCellValue()); student.setSex(row.getCell(1).getStringCellValue()); Address address = new Address(); address.setProvince(row.getCell(2).getStringCellValue()); address.setCity(row.getCell(3).getStringCellValue()); address.setCounty(row.getCell(4).getStringCellValue()); address.setDetailedAddress(row.getCell(5).getStringCellValue()); student.setAddress(address); student.setBirthday(row.getCell(6).getStringCellValue()); student.setOrigin(row.getCell(7).getStringCellValue()); Cell cell = row.getCell(8); cell.setCellType(HSSFCell.CELL_TYPE_STRING); String content = cell.getStringCellValue(); student.setCellphone(content); cell = row.getCell(9); cell.setCellType(HSSFCell.CELL_TYPE_STRING); content = cell.getStringCellValue(); student.setIdCard(content); student.setPolitics(row.getCell(10).getStringCellValue()); list.add(student); } return list; } public List<Teacher> readTeacherExcel(InputStream inputStream) throws IOException { List<Teacher> list = new ArrayList<Teacher>(); HSSFWorkbook hssfWorkbook = new HSSFWorkbook(inputStream); Sheet sheet = hssfWorkbook.getSheetAt(0); for (int i = 1; i <= sheet.getLastRowNum(); i++) { Row row = sheet.getRow(i); Teacher teacher = new Teacher(); teacher.setTeacherName(row.getCell(0).getStringCellValue()); Cell cell = row.getCell(1); cell.setCellType(HSSFCell.CELL_TYPE_STRING); String content = cell.getStringCellValue(); teacher.setCellphone(content); teacher.setSex(row.getCell(2).getStringCellValue()); teacher.setBirthday(row.getCell(3).getStringCellValue()); teacher.setEducation(row.getCell(4).getStringCellValue()); cell = row.getCell(5); cell.setCellType(HSSFCell.CELL_TYPE_STRING); content = cell.getStringCellValue(); teacher.setIdCard(content); Address address = new Address(); address.setProvince(row.getCell(6).getStringCellValue()); address.setCity(row.getCell(7).getStringCellValue()); address.setCounty(row.getCell(8).getStringCellValue()); address.setDetailedAddress(row.getCell(9).getStringCellValue()); teacher.setAddress(address); list.add(teacher); } return list; } public void exportExcel(List<Score> list) throws IOException { HSSFWorkbook hssfWorkbook = new HSSFWorkbook(); Sheet sheet = hssfWorkbook.createSheet("学生成绩表"); Row header = sheet.createRow(0); for (int i = 0; i < headers.length; i++) { header.createCell(i).setCellValue(headers[i]); } for (int i = 0; i < list.size(); i++) { Row row = sheet.createRow(i + 1); Score score = list.get(i); Teaching teaching = score.getTeaching(); Student student = score.getStudent(); int fenshu = score.getScore(); Semester semester = teaching.getSemester(); Class class1 = student.getClass1(); Course course = teaching.getCourse(); row.createCell(0).setCellValue(semester.getSemesterName()); row.createCell(1).setCellValue(student.getStudentNo()); row.createCell(2).setCellValue(student.getStudentName()); row.createCell(3).setCellValue(class1.getClassName()); row.createCell(4).setCellValue(course.getCourseName()); row.createCell(5).setCellValue(fenshu); } HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("application/vnd.ms-excel"); response.setHeader("Content-disposition", "attachment;filename=score.xls"); OutputStream ouputStream = response.getOutputStream(); hssfWorkbook.write(ouputStream); ouputStream.flush(); ouputStream.close(); } public InputStream getExcelInputStream(List<Score> list) throws IOException { HSSFWorkbook hssfWorkbook = new HSSFWorkbook(); Sheet sheet = hssfWorkbook.createSheet("学生成绩表"); Row header = sheet.createRow(0); for (int i = 0; i < headers.length; i++) { header.createCell(i).setCellValue(headers[i]); } for (int i = 0; i < list.size(); i++) { Row row = sheet.createRow(i + 1); Score score = list.get(i); Teaching teaching = score.getTeaching(); Student student = score.getStudent(); int fenshu = score.getScore(); Semester semester = teaching.getSemester(); Class class1 = student.getClass1(); Course course = teaching.getCourse(); row.createCell(0).setCellValue(semester.getSemesterName()); row.createCell(1).setCellValue(student.getStudentNo()); row.createCell(2).setCellValue(student.getStudentName()); row.createCell(3).setCellValue(class1.getClassName()); row.createCell(4).setCellValue(course.getCourseName()); row.createCell(5).setCellValue(fenshu); } ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); hssfWorkbook.write(byteArrayOutputStream); byte[] buffer = byteArrayOutputStream.toByteArray(); ByteArrayInputStream byteArrayInputStream=new ByteArrayInputStream(buffer); return byteArrayInputStream; } }