javaweb实现qq邮箱

雨点打透心脏的1/2处 2022-02-18 21:13 324阅读 0赞

## 一.效果图 ##

## ![20190415085037588.gif][] ##

我用的foxmail来接受的邮件的，你可以安装，也可以选择不安装

![20190415092728980.png][]

## 二.需要 ##

**1.mail.jar包**

![20190415090626241.png][]

**2.你需要开启你的qq邮箱**

https://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=1001256

开启这个服务你才能发邮件，（你要记住你的授权码，用做你登录邮箱的密码，不能用qq密码，会报错）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzQxODYxNzUx_size_16_color_FFFFFF_t_70][]

## 三.实现的步骤 ##

1.创建一个web项目

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzQxODYxNzUx_size_16_color_FFFFFF_t_70 1][]

# #

2.项目结构图

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzQxODYxNzUx_size_16_color_FFFFFF_t_70 2][]

3.编写filter类，解决中文乱码的问题

package com.tz.filter;
    
    import java.io.IOException;
    import java.lang.reflect.InvocationHandler;
    import java.lang.reflect.Method;
    import java.lang.reflect.Proxy;
    
    import javax.servlet.Filter;
    import javax.servlet.FilterChain;
    import javax.servlet.FilterConfig;
    import javax.servlet.ServletException;
    import javax.servlet.ServletRequest;
    import javax.servlet.ServletResponse;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServletRequest;
    
    
    public class MyFilter implements Filter
    {
    
    	@Override
    	public void init(FilterConfig filterConfig) throws ServletException {
    		// TODO Auto-generated method stub
    		
    	}
    
    	@Override
    	public void doFilter(ServletRequest req, ServletResponse response, FilterChain chain)
    			throws IOException, ServletException {
    		// 要增强的方法:request.getParameter
    		// 被代理的对象: request
    		
    		final HttpServletRequest request=(HttpServletRequest)req;
    		
    		// 动态的生成代理对象
    		HttpServletRequest hsr=(HttpServletRequest)Proxy.newProxyInstance(
    				request.getClass().getClassLoader(), 
    				request.getClass().getInterfaces(),
    				new InvocationHandler() {
    					@Override
    					public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
    						
    						// 1 判断是否是需要增强的方法 getParameter
    						if("getParameter".equals(method.getName()))
    						{
    							// 知道getParameter使用的是哪个提交方式 
    							String m = request.getMethod();
    							// 判断是get还是post
    							if("get".equalsIgnoreCase(m))
    							{
    								// 以前方法调用后的乱码
    								String s =(String)method.invoke(request, args);
    								// 增强--解决乱码
    								s=new String(s.getBytes("iso8859-1"),"utf-8");
    								return s;
    							}
    							
    							if("post".equalsIgnoreCase(m))
    							{
    								request.setCharacterEncoding("utf-8");
    								
    							}
    						}
    						
    						// 如果是别的方法
    						return method.invoke(request, args);
    					}
    				});
    		
    		// 放行
    		chain.doFilter(hsr, response);
    		
    	}
    
    	@Override
    	public void destroy() {
    		// TODO Auto-generated method stub
    		
    	}
    
    }

在web.xml中配置filter

<filter>
            <filter-name>myfilter</filter-name>
            <filter-class>com.tz.filter.MyFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>myfilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>

**4.编写MailServlet类(主要类)**

package com.tz.servlet;
    
    import javax.mail.*;
    import javax.mail.internet.AddressException;
    import javax.mail.internet.InternetAddress;
    import javax.mail.internet.MimeMessage;
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.IOException;
    import java.io.PrintWriter;
    import java.util.Properties;
    
    @WebServlet("/mail")
    public class MailServlet extends HttpServlet {
        @Override
        protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
            try {
                //接受前端传递过来的值
                //收件人
                String name = req.getParameter("name");
                //主题
                String title= req.getParameter("title");
                //正文
                String content=req.getParameter("content");
                //账户：
                //用户名
                String username ="204732791@qq.com";
                //密码 授权码 lrkxqparssdfsdf  这种样子的
                String password ="授权码";  //这个必须是必须是授权码 不然要抱错
                                 //https://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=1001256
                // 创建会话对象
    
                //1、获得邮箱服务的连接(会话对象)
                Properties props = new Properties();//封装数据
                props.put("mail.transport.protocol", "SMTP");//设置发邮件的协议
                props.put("mail.host", "smtp.qq.com");//设置发邮件的地址(smtp邮箱服务器地址) 邮件发送的主机
                props.put("mail.smtp.auth", "true");// 指定验证为true  密码安全验证
    
    
                //创建一个邮箱
                Session session = Session.getInstance(props);//会话对象
                MimeMessage ms = new MimeMessage(session);//创建邮件对象
    
                //设置邮箱的来源
                Address toAddress;
                toAddress = new InternetAddress(username);
                ms.setFrom(toAddress); //设置发送者
                //设置邮箱的接受者  就是前端传来的name
                ms.setRecipients(Message.RecipientType.TO,name);
                ms.setSubject(title);
                ms.setText(content);
                ms.saveChanges();//保存
                //创建一个发送工具
                Transport ts = session.getTransport("smtp");
                ts.connect(username,password);
                ts.sendMessage(ms,ms.getAllRecipients());//拿出所有的接受者
                ts.close();
    
                String msg = "发送成功";
                req.setAttribute("msg",msg);
                req.getRequestDispatcher("/message.jsp").forward(req,resp);
    
            } catch (Exception e) {
                e.printStackTrace();
                String msg = "发送失败";
                req.setAttribute("msg",msg);
                req.getRequestDispatcher("/message.jsp").forward(req,resp);
            }
        }
    }

5.编写index.jsp页面（你也可以做好看点，我为了方便就没有用css来修饰）

<%--
      Created by IntelliJ IDEA.
      User: 20473
      Date: 2019/4/14
      Time: 16:29
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
      <head>
        <title>$Title$</title>
      </head>
      <body>
        <form action="${pageContext.request.contextPath}/mail" method="post">
           收件人：<input type="text" name ="name"><br><br><br>
           主题 ：<input type="text" name = "title"><br><br><br><br>
           正文 ：<textarea cols="20" rows="10" name="content"></textarea><br><br><br>
            <input type="submit" value="发送">
        </form>
      </body>
    </html>

**一个message.jsp页面，用于发送过后页面显示信息，来表示发送失败还是成为**

<%--
      Created by IntelliJ IDEA.
      User: 20473
      Date: 2019/4/14
      Time: 23:22
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>信息页面</title>
    </head>
    <body>
    <h2>${msg}</h2>
    </body>
    </html>

**好了，一个简单的发送邮件的案例就制作完成了，不仅仅能发qq邮箱，也可以发送其他的邮箱的,**

**也可以实现群发邮件，邮件中间有英文状态的","号隔开**

## **message.setRecipient(RecipientType.TO, new InternetAddress(email)); // 设置发送方式与接收者，这个可以单发，不能群发** ##

## **ms.setRecipients(Message.RecipientType.TO,name);  //群发** ##

[20190415085037588.gif]: /images/20220219/fa17ac951782476f898065fc4f718aba.png
[20190415092728980.png]: /images/20220219/5c0e994d0e39405fb0918b999e263a88.png
[20190415090626241.png]: /images/20220219/0c33f8242bfd4134bc41382a19b69d75.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzQxODYxNzUx_size_16_color_FFFFFF_t_70]: /images/20220219/cc5bd086d42c48ad913e1e7e3bcdb01e.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzQxODYxNzUx_size_16_color_FFFFFF_t_70 1]: /images/20220219/93f5da1b5f0d409b8247c32712c877b6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzQxODYxNzUx_size_16_color_FFFFFF_t_70 2]: /images/20220219/9eb969c3d20d42e1bbedcbf8d84ac3ae.png