SpringBoot拦截全局异常并发送邮件给指定邮箱

主要是看一下Springboot中发送邮件的方法，至于拦截Springboot全局异常之前的文章中有。

一发送邮件

在Springboot中发送邮件非常简单。

pom.xml引入maven依赖

     <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-mail</artifactId></dependency>

在application.yml里设置发信人的账号、密码

spring:mail:host: smtp.qq.comusername: 27255XXXX@qq.compassword: njcvcbdkrofgbhieproperties:mail:smtp:auth: truestarttls:enable: truerequired: true

这个username就是未来发信时的邮箱地址，password是授权码。

这里以普通qq邮箱为例，注意password不是qq密码，而是授权码。

在qq邮箱-设置-账户，找到图片中的地方，开启IMAP/SMTP服务，开启后才能在别的客户端使用该qq邮箱发邮件，然后生成授权码，填写到application.yml的password位置。

然后就可以使用该邮箱作为发件人了。

看一下发邮件的具体代码，参考http://blog.csdn.net/clementad/article/details/51833416

package com.tianyalei.testmail.service;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;@Service
public class MailService {private final Logger logger = LoggerFactory.getLogger(this.getClass());@Autowiredprivate JavaMailSender sender;@Value("${spring.mail.username}")private String from;/*** 发送纯文本的简单邮件* @param to* @param subject* @param content*/public void sendSimpleMail(String to, String subject, String content){SimpleMailMessage message = new SimpleMailMessage();message.setFrom(from);message.setTo(to);message.setSubject(subject);message.setText(content);try {sender.send(message);logger.info("简单邮件已经发送。");} catch (Exception e) {logger.error("发送简单邮件时发生异常！", e);}}/*** 发送html格式的邮件* @param to* @param subject* @param content*/public void sendHtmlMail(String to, String subject, String content){MimeMessage message = sender.createMimeMessage();try {//true表示需要创建一个multipart messageMimeMessageHelper helper = new MimeMessageHelper(message, true);helper.setFrom(from);helper.setTo(to);helper.setSubject(subject);helper.setText(content, true);sender.send(message);logger.info("html邮件已经发送。");} catch (MessagingException e) {logger.error("发送html邮件时发生异常！", e);}}/*** 发送带附件的邮件* @param to* @param subject* @param content* @param filePath*/public void sendAttachmentsMail(String to, String subject, String content, String filePath){MimeMessage message = sender.createMimeMessage();try {//true表示需要创建一个multipart messageMimeMessageHelper helper = new MimeMessageHelper(message, true);helper.setFrom(from);helper.setTo(to);helper.setSubject(subject);helper.setText(content, true);FileSystemResource file = new FileSystemResource(new File(filePath));String fileName = filePath.substring(filePath.lastIndexOf(File.separator));helper.addAttachment(fileName, file);sender.send(message);logger.info("带附件的邮件已经发送。");} catch (MessagingException e) {logger.error("发送带附件的邮件时发生异常！", e);}}/*** 发送嵌入静态资源（一般是图片）的邮件* @param to* @param subject* @param content 邮件内容，需要包括一个静态资源的id，比如：<img src=\"cid:rscId01\" >* @param rscPath 静态资源路径和文件名* @param rscId 静态资源id*/public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId){MimeMessage message = sender.createMimeMessage();try {//true表示需要创建一个multipart messageMimeMessageHelper helper = new MimeMessageHelper(message, true);helper.setFrom(from);helper.setTo(to);helper.setSubject(subject);helper.setText(content, true);FileSystemResource res = new FileSystemResource(new File(rscPath));helper.addInline(rscId, res);sender.send(message);logger.info("嵌入静态资源的邮件已经发送。");} catch (MessagingException e) {logger.error("发送嵌入静态资源的邮件时发生异常！", e);}}
}

然后就可以使用里面的方法发邮件了。

可以先写个简单的测试类，调用

mailService.sendSimpleMail("wuweifeng@XXX.com", "主题：简单邮件", "测试邮件内容");

填写个收信人的地址就OK了。然后就能收到邮件了。收信人可以有多个，通过SimpleMailMessage可以看到。

二拦截全局异常并发邮件

定义一个全局拦截类

package com.tianyalei.testmail.global;import com.tianyalei.testmail.service.MailService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.context.request.WebRequest;
import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;import javax.servlet.http.HttpServletRequest;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Enumeration;import static org.springframework.http.HttpStatus.NOT_EXTENDED;/*** Created by wuwf on 17/3/31.* 全局异常处理*/
@ControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {private Logger logger = LoggerFactory.getLogger(getClass().getName());@Autowiredprivate MailService mailService;/*** 在controller里面内容执行之前，校验一些参数不匹配啊，Get post方法不对啊之类的*/@Overrideprotected ResponseEntity<Object> handleExceptionInternal(Exception ex, Object body, HttpHeaders headers, HttpStatus status, WebRequest request) {System.out.println("错误");return new ResponseEntity<>("出错了", NOT_EXTENDED);}@ExceptionHandler(value = Exception.class)@ResponseBodypublic String jsonHandler(HttpServletRequest request, Exception e) throws Exception {log(e, request);StringWriter sw = new StringWriter();PrintWriter pw = new PrintWriter(sw);e.printStackTrace(pw);//发送邮件mailService.sendSimpleMail("wuweifeng@XXXX.com", "异常", sw.toString());return "发生异常";}private void log(Exception ex, HttpServletRequest request) {logger.error("************************异常开始*******************************");logger.error("请求地址：" + request.getRequestURL());Enumeration enumeration = request.getParameterNames();logger.error("请求参数");while (enumeration.hasMoreElements()) {String name = enumeration.nextElement().toString();logger.error(name + "---" + request.getParameter(name));}StackTraceElement[] error = ex.getStackTrace();for (StackTraceElement stackTraceElement : error) {logger.error(stackTraceElement.toString());}logger.error("************************异常结束*******************************");}
}

当有异常时会进入被@ExceptionHandler标注的方法中，在该方法里做异常日志的记录和发邮件的逻辑。

手动触发个异常，看看结果

可以看到已经收到邮件了。