解決jdk1.8中發送郵件失敗（handshake_failure）問題

暑假在家做一個類似知乎的問答型網站（代碼可見：Github/wenda 喜歡的可以給個star或者自己fork然後修改，目前功能還未很完善），其中有一個站內郵件通知系統（這裏簡單的講一個例子：如果用戶登錄的時候出現異常，那麽就會通過郵件發送通知用戶）。然而卻碰到一個問題。問題錯誤信息如下：

發送郵件失敗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

自己在將錯誤信息代碼google了一下，找了很久發現很多解決方案，包括stackoverflow上的一些解決方案，但還是沒用。然後呢用百度試了下，結果在第一條是開源中國的一篇博客:javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure。

點進去是這樣的：（如下圖）

結果就是：這個問題是jdk導致的，jdk1.8裏面有一個jce的包，安全性機制導致的訪問https會報錯，官網上有替代的jar包，如果替換掉就可以了。問題的解決方法還可以就是在整個項目中把你的jdk換成是1.7去，同樣也可以解決這個我問題。這兩個jar包的下載地址：http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html

然後下載之後，把這個壓縮文件解壓，得到兩個jar包去覆蓋jdk安裝目錄下的jre\lib\security\下相同的jar包就能解決java8的郵件發送問題。接著用QQ郵箱我親測有用，但是要註意一點就是：開啟SMTP服務後要記得將你的16位授權碼作為你的qq郵箱登錄密碼。

MailSender.java中mailSender.setPassword("16位授權碼");
mailSender.setHost("smtp.qq.com");
mailSender.setPort(465);

下面把完整代碼發布出來：
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
{
    @Autowired
    MailSender mailSender;


    @Override
    public void doHandle(EventModel model) {
        // xxxx判斷發現這個用戶登陸異常
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("username", model.getExt("username"));
        mailSender.sendWithHTMLTemplate(model.getExt("email"), "登陸IP異常", "mails/login_exception.html", map);
    }

    @Override
    public 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);

    @Autowired
    UserService userService;

    @Autowired
    EventProducer 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("註冊異常" + e.getMessage());
            model.addAttribute("msg", "服務器錯誤");
            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", "[email protected]")
                        .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("登陸異常" + 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. // [email protected]   wnppafhsbrcgbfbh（16位授權碼）
 */
@Service
public class MailSender implements InitializingBean {
    private static final Logger logger = LoggerFactory.getLogger(MailSender.class);
    private JavaMailSenderImpl mailSender;

    @Autowired
    private 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 + "<[email protected]>");
            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("發送郵件失敗" + e.getMessage());
            return false;
        }
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        mailSender = new JavaMailSenderImpl();
        mailSender.setUsername("[email protected]");
        mailSender.setPassword("wnppafhsbrcgbfbh");   //qq郵箱開啟smtp服務後使用16位授權碼在第三方登錄
//        mailSender.setHost("smtp.exmail.qq.com");
        mailSender.setHost("smtp.qq.com");
        mailSender.setPort(465);

//        mailSender.setHost("smtp.163.com");      //163郵箱
//        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 發送消息模板（可自定義）

你好$username，你的登陸有問題!

一切都好了，運行。登錄。發送郵件過來了。

總結來說：這個錯誤就是jdk1.8中的一個jce的包，安全性機制導致訪問https會報錯。

（轉）解決jdk1.8中發送郵件失敗（handshake_failure）問題