闲话少许，上码。
---> 开发ide：idea
---> jdk:1.8
一.建立一个普通Springboot项目，加入以下依赖：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- lombok插件，需要idea安装lombok插件并引入以下依赖 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
</dependency>
<!-- email -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<!-- freemarker -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
二.配置application.yml
# 邮件配置
spring:
mail:
host: smtp.126.com #用什么邮箱发送就用对应的host
username: [email protected] #你要发送邮件的邮箱
password: #此处填写你邮箱的授权码,注意：不是密码哦
properties:
mail:
smtp:
auth: true
starttls:
enable: true
required: true
mvc:
throw-exception-if-no-handler-found: true
# static-path-pattern: /static/**
# freemarker
freemarker:
template-loader-path:
- classpath:/templates
suffix: .ftl
enabled: true
cache: false
charset: UTF-8
content-type: text/html
allow-request-override: false
check-template-location: true
expose-request-attributes: false
expose-session-attributes: false
expose-spring-macro-helpers: false
# 异常通知地址 多个邮箱以逗号分隔
alarm:
email: [email protected],[email protected]
三.建立Email类
package com.lhyt.modules.sys.mail;
import lombok.Data;
import java.io.Serializable;
import java.util.HashMap;
/**
* Email封装对象
*
* @author wangdy
* @date 2019/4/19 22:14
*/
@Data //该注解会自动生成 getter setter 方法
public class Email implements Serializable {
private static final long serialVersionUID = 1L;
// 必填参数
private String[] email;// 接收方邮件数组
private String subject;// 主题,邮件标题
private String content;// 邮件内容文本
// 以模板发送邮件的时候填写以下参数的值
private String template;// 邮件模板
private HashMap<String, Object> kvMap;// 自定义参数，用于模板发送时显示内容
public Email() {
super();
}
public Email(String[] email, String subject, String content, String template, HashMap<String, Object> kvMap) {
super();
this.email = email;
this.subject = subject;
this.content = content;
this.template = template;
this.kvMap = kvMap;
}
}
四.定义接口,实现类
接口
package com.lhyt.modules.sys.service;
import com.lhyt.modules.sys.mail.Email;
/**
* 邮件发送服务
*
* @author wangdy
* @date 2019/4/19 22:16
*/
public interface IMailService {
/**
* 纯文本发送
*
* @param mail
*/
public void send(Email mail);
/**
* 模版发送 freemarker
*
* @param mail
*/
public void sendFreemarker(Email mail);
}
接口的实现类
package com.lhyt.modules.sys.service.impl;
import com.lhyt.modules.sys.mail.Email;
import com.lhyt.modules.sys.service.IMailService;
import freemarker.template.Configuration;
import freemarker.template.Template;
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.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import org.springframework.ui.freemarker.FreeMarkerTemplateUtils;
import javax.mail.internet.MimeMessage;
import java.util.HashMap;
import java.util.Map;
@Service
public class MailServiceImpl implements IMailService {
private static final Logger logger = LoggerFactory.getLogger(MailServiceImpl.class);
@Autowired
private JavaMailSender mailSender;
@Autowired
public Configuration configuration;//freemarker---FreeMarkerConfigurer
@Value("${spring.mail.username}")
public String USER_NAME;//发送者
//文本分割
static {
System.setProperty("mail.mime.splitlongparameters", "false");
}
@Override
public void send(Email mail) {
try {
logger.info("发送普通文本邮件：{}", mail.getContent());
SimpleMailMessage message = new SimpleMailMessage();
message.setFrom(USER_NAME);
message.setTo(mail.getEmail());
message.setSubject(mail.getSubject());
message.setText(mail.getContent());
mailSender.send(message);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void sendFreemarker(Email mail) {
try {
MimeMessage message = mailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(message, true);
//这里可以自定义发信名称比如：工作流
helper.setFrom(USER_NAME, "系统邮件通知");
helper.setTo(mail.getEmail());
helper.setSubject(mail.getSubject());
Map<String, Object> model = new HashMap<>();
model.put("mail", mail);
model.put("exception", mail.getKvMap());
Template template = configuration.getTemplate(mail.getTemplate());
String text = FreeMarkerTemplateUtils.processTemplateIntoString(template, model);
helper.setText(text, true);
mailSender.send(message);
} catch (Exception e) {
e.printStackTrace();
}
}
}
五.定义异常处理类
package com.lhyt.common.exception;
import com.lhyt.common.utils.R;
import com.lhyt.modules.sys.mail.Email;
import com.lhyt.modules.sys.service.IMailService;
import org.apache.shiro.authz.AuthorizationException;
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.dao.DuplicateKeyException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.NoHandlerFoundException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.HashMap;
/**
* 异常处理器
*
* @author wangdy
*/
@RestControllerAdvice //注意加该注解
public class MyExceptionHandler {
private Logger logger = LoggerFactory.getLogger(getClass());
@Autowired
private IMailService mailService;
@Value("${alarm.email}")
private String[] email;
@ExceptionHandler(Exception.class)
public R handleException(Exception e) {
//产生异常，发送邮件服务
StringWriter stringWriter = new StringWriter();
e.printStackTrace(new PrintWriter(stringWriter));
Email mail = new Email();
mail.setEmail(email);
mail.setSubject("异常告警邮件通知");
mail.setContent(stringWriter.toString());
// mailService.send(mail);//发送普通邮件
mail.setTemplate("notifyEmail.ftl");
HashMap<String, Object> mapParam = new HashMap<>(); //自定义模板参数，用于在ftl中接收展示
mapParam.put("exceptionCause", e.getCause());
mapParam.put("exceptionMessage", e.getMessage());
mapParam.put("exceptionClass", e.getClass());
mail.setKvMap(mapParam);
mailService.sendFreemarker(mail);//发送模板邮件
logger.error(e.getMessage(), e);
return R.error();
}
}
六.在resources/templates下新建邮件模板文件notifyEmail.ftl
<!doctype html>
<html lang="zh-cmn-Hans">
<head>
<meta charset="UTF-8">
<meta name="renderer" content="webkit"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
<title>邮件通知模板</title>
<style type="text/css">
table {
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
width: 100%;
border-collapse: collapse;
}
td, th {
font-size: 1em;
border: 1px solid #5B4A42;
padding: 3px 7px 2px 7px;
}
th {
font-size: 1.1em;
text-align: center;
padding-top: 5px;
padding-bottom: 4px;
background-color: #24A9E1;
color: #ffffff;
}
</style>
</head>
<body>
<h2>邮件消息通知</h2>
<table>
<tr>
<th>异常类</th>
<th>异常消息</th>
<th>异常原因</th>
</tr>
<tr>
<td>${(exception.exceptionClass)!""}</td>
<td>${(exception.exceptionMessage)!""}</td>
<td>${(exception.exceptionCause)!""}</td>
</tr>
</table>
<br>
<b>########################################################################################################################</b>
<hr>
<b>########################################################################################################################</b>
<br>
<b>##############################具体异常信息如下：##############################</b>
<br>
<pre>${mail.content}</pre>
</body>
</html>
七.随便写一个controller，然后随便报一个异常进行测试。
@GetMapping("testExceptionSendEmail")
public R testExceptionSendEmail() {
int i = 1/0;
return R.ok();
}
然后在浏览器上访问该接口，触发报错异常。看邮件是否发送，当然如果你配置正确的话，无疑是要发送成功的：
我这边收到的邮件截图如下：
另一个qq邮箱收到截图如下：qq邮箱对样式的解析好像不是很好，我这边也没深究，你们看下吧。
以上就是全部程序了。希望帮助到你。
注: 你也可以对自定义异常进行特别的拦截，而不是拦截所有异常，可以在MyExceptionHandler类中加入如下方法进行：
/**
* 处理自定义异常，并发送邮件
*/
@ExceptionHandler(MyException.class)
public R handleMyException(MyException e) {
//产生异常，发送邮件服务
StringWriter stringWriter = new StringWriter();
e.printStackTrace(new PrintWriter(stringWriter));
Email mail = new Email();
mail.setEmail(email);
mail.setSubject("异常告警邮件通知");
mail.setContent(stringWriter.toString());
// mailService.send(mail);//发送普通邮件
mail.setTemplate("notifyEmail.ftl");
HashMap<String, Object> mapParam = new HashMap<>(); //自定义模板参数，用于在ftl中接收展示
mapParam.put("exceptionCause", e.getCause());
mapParam.put("exceptionMessage", e.getMessage());
mapParam.put("exceptionClass", e.getClass());
mail.setKvMap(mapParam);
mailService.sendFreemarker(mail);//发送模板邮件
R r = new R();//这个就是一个map，哈哈哈
r.put("code", e.getCode());
r.put("msg", e.getMessage());
return r;
}
其中用到的自定义异常类如下：
package com.lhyt.common.exception;
/**
* 自定义异常
*
* @author wangdy
*/
public class MyException extends RuntimeException {
private static final long serialVersionUID = 1L;
private String message;
private int code = 500;
//getter setter 构造自己写就可以了。然后在用到的地方throw MyException
}
END
