公司财务要求做一个Excel表格工资条内容群发邮箱的功能，由于我是菜鸟项目老大就把这任务交给我来做，开始时需求没谈好做了很多白费的功夫，在这里我算是长教训！一定要谈好需求才开始做而且要找到对的人去谈需求！最终还好在各同事指点下做出来了，好了废话就不多说了下面直接上代码。
1.上传的Excel表格的内容格式
2.前端代码form表单multipart文件上传
excel上传:
3.java后台代码
maven需要的下的jar
org.apache.poi
poi
3.8
org.apache.poi
poi-ooxml
3.8
org.apache.poi
poi-ooxml-schemas
3.8
org.apache.poi
poi-scratchpad
3.8
org.apache.xmlbeans
xmlbeans
2.3.0
javax.mail
mail
1.4.5
controller层代码
package com.boyue.controller;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Resource;
import javax.mail.MessagingException;
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.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import com.boyue.core.utils.EmailUtil;
@Controller
@RequestMapping("employee")
public class EmployeeController {
private final static String xls = "xls";
private final static String xlsx = "xlsx";
/**
* 读入excel文件，解析后返回
* @param file
* @throws IOException
* @throws MessagingException
*/
@RequestMapping(value = "excelpath")
public String readExcel(Model model,MultipartFile file) throws IOException, MessagingException{
//检查文件
checkFile(file);
//System.out.println(file);
//获得Workbook工作薄对象
Workbook workbook = getWorkBook(file);
int cellNum=0;
//创建返回对象，把每行中的值作为一个数组，所有行作为一个集合返回
List list = new ArrayList();
if(workbook != null){
for(int sheetNum = 0;sheetNum < workbook.getNumberOfSheets();sheetNum++){
//获得当前sheet工作表
Sheet sheet = workbook.getSheetAt(sheetNum);
if(sheet == null){
continue;
}
//获得当前sheet的开始行
int firstRowNum = sheet.getFirstRowNum();
//获得当前sheet的结束行
int lastRowNum = sheet.getLastRowNum();
//循环除了第一行的所有行
for(int rowNum = firstRowNum+1;rowNum <= lastRowNum;rowNum++){ //为了过滤到第一行因为我的第一行是数据库的列
//获得当前行
Row row = sheet.getRow(rowNum);
if(row == null){
continue;
}
//获得当前行的开始列
int firstCellNum = row.getFirstCellNum();
//获得当前行的列数
//int lastCellNum = row.getPhysicalNumberOfCells();//为空列不获取
//String[] cells = new String[row.getPhysicalNumberOfCells()];
int lastCellNum = row.getLastCellNum();//为空列获取
String[] cells = new String[row.getLastCellNum()];
//循环当前行
for(cellNum = firstCellNum; cellNum < lastCellNum;cellNum++){
Cell cell = row.getCell(cellNum);
cells[cellNum] = getCellValue(cell);
}
list.add(cells);
}
}
for (int i = 0; i < list.size(); i++) {
//EmailUtil.send("收件人邮箱号"，"邮件标题"，"邮件内容")
EmailUtil.send(list.get(i)[1],"工资情况",list.get(i)[0]+"你好:
以下是你"+list.get(i)[2]+"份的工资条，"+list.get(i)[3]+"
如有疑问请找前台统计好，前台上交财务部统一处理。谢谢合作！
");
}
}
//logger.info(gson.toJson(list));
return "employee/success";
}
public static void checkFile(MultipartFile file) throws IOException{
//判断文件是否存在
if(null == file){
throw new FileNotFoundException("文件不存在！");
}
//获得文件名
String fileName = file.getOriginalFilename();
//判断文件是否是excel文件
if(!fileName.endsWith(xls) && !fileName.endsWith(xlsx)){
throw new IOException(fileName + "不是excel文件");
}
}
public static Workbook getWorkBook(MultipartFile file) {
//获得文件名
String fileName = file.getOriginalFilename();
//创建Workbook工作薄对象，表示整个excel
Workbook workbook = null;
try {
//获取excel文件的io流
InputStream is = file.getInputStream();
//根据文件后缀名不同(xls和xlsx)获得不同的Workbook实现类对象
if(fileName.endsWith(xls)){
//2003
workbook = new HSSFWorkbook(is);
}else if(fileName.endsWith(xlsx)){
//2007
workbook = new XSSFWorkbook(is);
}
} catch (IOException e) {
//logger.info(e.getMessage());
System.out.println(e.getMessage());
}
return workbook;
}
public static String getCellValue(Cell cell){
String cellValue = "";
if(cell == null){
return cellValue;
}
//把数字当成String来读，避免出现1读成1.0的情况
if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){
cell.setCellType(Cell.CELL_TYPE_STRING);
}
//判断数据的类型
switch (cell.getCellType()){
case Cell.CELL_TYPE_NUMERIC: //数字
cellValue = String.valueOf(cell.getNumericCellValue());
break;
case Cell.CELL_TYPE_STRING: //字符串
cellValue = String.valueOf(cell.getStringCellValue());
break;
case Cell.CELL_TYPE_BOOLEAN: //Boolean
cellValue = String.valueOf(cell.getBooleanCellValue());
break;
case Cell.CELL_TYPE_FORMULA: //公式
// cellValue = String.valueOf(cell.getCellFormula());
cellValue = String.valueOf(cell.getStringCellValue());
break;
case Cell.CELL_TYPE_BLANK: //空值
cellValue = "";
break;
case Cell.CELL_TYPE_ERROR: //故障
cellValue = "非法字符";
break;
default:
cellValue = "未知类型";
break;
}
return cellValue;
}
}
4.获取发件人的IMAP授权码
5.创建邮箱发送的工具类
package com.boyue.core.utils;
import java.util.Properties;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import com.sun.mail.util.MailSSLSocketFactory;
public class EmailUtil {
/**
* 发送邮件
* @param to 收件人邮箱
* @param subject 标题
* @param msg 消息内容
* @return
*/
public static boolean send(String to,String subject,String msg){
Properties props = new Properties();
//邮件传输的协议
props.put("mail.transport.protocol", "smtp");
//连接的邮件服务器
props.put("mail.host","smtp.qq.com");
//发送人
props.put("mail.from","[email protected]");
//第一步：创建session
Session session = Session.getDefaultInstance(props);
session.setDebug(true);
try {
MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
props.put("mail.smtp.ssl.enable", "true");
props.put("mail.smtp.ssl.socketFactory", "true");
//第二步：获取邮件传输对象
Transport ts= session.getTransport();
//连接邮件服务器
ts.connect("[email protected]", "你的IMAP授权码");
//第三步：创建邮件消息体
MimeMessage message = new MimeMessage(session);
//设置邮件的标题
message.setSubject(subject, "utf-8");
//设置邮件的内容
message.setContent(msg,"text/html;charset=utf-8");
//第四步：设置发送昵称
String nick="";
nick = javax.mail.internet.MimeUtility.encodeText("财务部");
message.setFrom(new InternetAddress(nick+"''"));
//第五步：设置接收人信息
ts.sendMessage(message, InternetAddress.parse(to));
} catch (Exception ex) {
// TODO Auto-generated catch block
ex.printStackTrace();
}
return false;
}
}
