本文主要是介绍解决jdk1.8中发送邮件失败（handshake_failure）问题，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
暑假在家做一个类似知乎的问答型网站（代码可见：Github/wenda 喜欢的可以给个star或者自己fork然后修改，目前功能还未很完善），其中有一个站内邮件通知系统（这里简单的讲一个例子：如果用户登录的时候出现异常，那么就会通过邮件发送通知用户）。然而却碰到一个问题。问题错误信息如下：
发送邮件失败Mail server connection failed; nested exception is javax.mail.MessagingException: Could not connect to SMTP host: smtp.qq.com, port: 465;
nested exception is: javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure. Failed messages: javax.mail. MessagingException: Could not connect to SMTP host: smtp.qq.com, port: 465;
nested exception is: javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
自己在将错误信息代码google了一下，找了很久发现很多解决方案，包括stackoverflow上的一些解决方案，但还是没用。然后呢用百度试了下，结果在第一条是开源中国的一篇博客:javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure。
点进去是这样的：（如下图）
结果就是：这个问题是jdk导致的，jdk1.8里面有一个jce的包，安全性机制导致的访问https会报错，官网上有替代的jar包，如果替换掉就可以了。问题的解决方法还可以就是在整个项目中把你的jdk换成是1.7去，同样也可以解决这个我问题。
这两个jar包的下载地址：http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
然后下载之后，把这个压缩文件解压，得到两个jar包去覆盖jdk安装目录下的jre\lib\security\下相同的jar包就能解决java8的邮件发送问题。
接着用QQ邮箱我亲测有用，但是要注意一点就是：开启SMTP服务后要记得将你的16位授权码作为你的qq邮箱登录密码。
MailSender.java中mailSender.setPassword(“16位授权码”);
mailSender.setHost(“smtp.qq.com”);
mailSender.setPort(465);
下面把完整代码发布出来：
1. LoginExceptionHandler.java
package com.nowcoder.async.handler;import com.nowcoder.async.EventHandler;
import com.nowcoder.async.EventModel;
import com.nowcoder.async.EventType;
import com.nowcoder.util.MailSender;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;/*** Created by 10412 on 2016/8/10.*/
@Component
public class LoginExceptionHandler implements EventHandler
{@AutowiredMailSender mailSender;@Overridepublic void doHandle(EventModel model) {// xxxx判断发现这个用户登陆异常Map<String, Object> map = new HashMap<String, Object>();map.put("username", model.getExt("username"));mailSender.sendWithHTMLTemplate(model.getExt("email"), "登陆IP异常", "mails/login_exception.html", map);}@Overridepublic List<EventType> getSupportEventTypes() {return Arrays.asList(EventType.LOGIN);}
}2. LoginController.java
package com.nowcoder.controller;import com.nowcoder.async.EventModel;
import com.nowcoder.async.EventProducer;
import com.nowcoder.async.EventType;
import com.nowcoder.service.UserService;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;/*** Created by 10412 on 2016/7/2.*/@Controller
public class LoginController {private static final Logger logger = LoggerFactory.getLogger(LoginController.class);@AutowiredUserService userService;@AutowiredEventProducer eventProducer;@RequestMapping(path = {"/reg/"}, method = {RequestMethod.POST})public String reg(Model model, @RequestParam("username") String username,@RequestParam("password") String password,@RequestParam("next") String next,@RequestParam(value="rememberme", defaultValue = "false") boolean rememberme,HttpServletResponse response) {try {Map<String, Object> map = userService.register(username, password);if (map.containsKey("ticket")) {Cookie cookie = new Cookie("ticket", map.get("ticket").toString());cookie.setPath("/");if (rememberme) {cookie.setMaxAge(3600*24*5);}response.addCookie(cookie);if (StringUtils.isNotBlank(next)) {return "redirect:" + next;}return "redirect:/";} else {model.addAttribute("msg", map.get("msg"));return "login";}} catch (Exception e) {logger.error("注册异常" + e.getMessage());model.addAttribute("msg", "服务器错误");return "login";}}@RequestMapping(path = {"/reglogin"}, method = {RequestMethod.GET})public String regloginPage(Model model, @RequestParam(value = "next", required = false) String next) {model.addAttribute("next", next);return "login";}@RequestMapping(path = {"/login/"}, method = {RequestMethod.POST})public String login(Model model, @RequestParam("username") String username,@RequestParam("password") String password,@RequestParam(value="next", required = false) String next,@RequestParam(value="rememberme", defaultValue = "false") boolean rememberme,HttpServletResponse response) {try {Map<String, Object> map = userService.login(username, password);if (map.containsKey("ticket")) {Cookie cookie = new Cookie("ticket", map.get("ticket").toString());cookie.setPath("/");if (rememberme) {cookie.setMaxAge(3600*24*5);}response.addCookie(cookie);eventProducer.fireEvent(new EventModel(EventType.LOGIN).setExt("username", username).setExt("email", "****@qq.com").setActorId((int)map.get("userId")));if (StringUtils.isNotBlank(next)) {return "redirect:" + next;}return "redirect:/";} else {model.addAttribute("msg", map.get("msg"));return "login";}} catch (Exception e) {logger.error("登陆异常" + e.getMessage());return "login";}}@RequestMapping(path = {"/logout"}, method = {RequestMethod.GET, RequestMethod.POST})public String logout(@CookieValue("ticket") String ticket) {userService.logout(ticket);return "redirect:/";}}
3. EventHandler.java
package com.nowcoder.async;import java.util.List;/*** Created by 10412 on 2016/8/10.*/
public interface EventHandler
{void doHandle(EventModel model);List<EventType> getSupportEventTypes();}4. MailSender.java
package com.nowcoder.util;import org.apache.velocity.app.VelocityEngine;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import org.springframework.ui.velocity.VelocityEngineUtils;import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
import java.util.Map;
import java.util.Properties;/*** Created by 10412 on 2016/8/10. // ***@qq.com wnppafhsbrcgbfbh（16位授权码）*/
@Service
public class MailSender implements InitializingBean {private static final Logger logger = LoggerFactory.getLogger(MailSender.class);private JavaMailSenderImpl mailSender;@Autowiredprivate VelocityEngine velocityEngine;public boolean sendWithHTMLTemplate(String to, String subject, String template, Map<String, Object> model){try {String nick = MimeUtility.encodeText("***");InternetAddress from = new InternetAddress(nick + "<****@qq.com>");MimeMessage mimeMessage = mailSender.createMimeMessage();MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage);String result = VelocityEngineUtils.mergeTemplateIntoString(velocityEngine, template, "UTF-8", model);mimeMessageHelper.setTo(to);mimeMessageHelper.setFrom(from);mimeMessageHelper.setSubject(subject);mimeMessageHelper.setText(result, true);mailSender.send(mimeMessage);return true;} catch (Exception e) {logger.error("发送邮件失败" + e.getMessage());return false;}}@Overridepublic void afterPropertiesSet() throws Exception {mailSender = new JavaMailSenderImpl();mailSender.setUsername("***@qq.com");mailSender.setPassword("wnppafhsbrcgbfbh"); //qq邮箱开启smtp服务后使用16位授权码在第三方登录
// mailSender.setHost("smtp.exmail.qq.com");mailSender.setHost("smtp.qq.com");mailSender.setPort(465);// mailSender.setHost("smtp.163.com"); //163邮箱
// mailSender.setPort(25);mailSender.setProtocol("smtps");mailSender.setDefaultEncoding("utf8");Properties javaMailProperties = new Properties();javaMailProperties.put("mail.smtp.ssl.enable", true);//javaMailProperties.put("mail.smtp.auth", true);//javaMailProperties.put("mail.smtp.starttls.enable", true);mailSender.setJavaMailProperties(javaMailProperties);}
}
5. login_exception.html 发送消息模板（可自定义）
你好$username，你的登陆有问题!
一切都好了，运行。
登录。
发送邮件过来了。
总结来说：这个错误就是jdk1.8中的一个jce的包，安全性机制导致访问https会报错。
这篇关于解决jdk1.8中发送邮件失败（handshake_failure）问题的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
