java servlet的小问题

珍宝

输入正确的用户名和密码后出现HTTP Status 405 - HTTP method GET is not supported by this URL

//LoginServlet.java代码

package com.cj.view;

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

public class LoginServlet extends HttpServlet {

public void doGet(HttpServletRequest request,HttpServletResponse response)

throws ServletException,IOException{

response.setContentType("text/html;charset=utf-8");

response.setCharacterEncoding("utf-8");

PrintWriter out = response.getWriter();

out.println("<h1>用户登录</h1>");

out.println("<form action='/UsersManger1/LoginCLServlet' method='POST'>");

out.println("用户名<input type='text' name='username' /><br>");

out.println("密 码<input type='password' name='password' /><br>");

out.println("<input type='submit' value='登录' /><br>");

out.println("</form>");

}

public void doPost(HttpServletRequest request,HttpServletResponse response)

throws ServletException,IOException{

this.doGet(request, response);

}

}

//LoginCLServlet.java的代码

package com.cj.contraler;

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

/**

* Servlet implementation class LoginCLServlet

*/

public class LoginCLServlet extends HttpServlet {

public void doGet(HttpServletRequest request,HttpServletResponse response)

throws ServletException,IOException{

response.setContentType("text/html;charset=utf-8");

PrintWriter out = response.getWriter();

String username=request.getParameter("username");

String password=request.getParameter("password");

System.out.print(username+" " +password);

if("abc".equals(username)&&"123456".equals(password))

response.sendRedirect("/UsersManger1/MainFrame");

else

response.sendRedirect("/UsersManger1/LoginServlet");

}

public void doPost(HttpServletRequest request,HttpServletResponse response)

throws ServletException,IOException{

this.doGet(request, response);

}

}

//MainFrame.java的代码

package com.cj.view;

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

public class MainFrame extends HttpServlet{

public void doGet(HttpServletResponse request,HttpServletResponse response)

throws ServletException,IOException{

response.setContentType("text/html;charset=utf-8");

PrintWriter out = response.getWriter();

out.println("<h1>主界面 </h1>");

}

public void doPost(HttpServletRequest request,HttpServletResponse response)

throws ServletException,IOException{

this.doGet(request, response);

}

}

linuxyz

能看到的错去就是MainFrame中的doGet方法的2个参数都写成了HttpServetResponse 把第一个参数修改下应该就Ok

珍宝

//web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>UsersManger1</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <description></description>
    <display-name>LoginServlet</display-name>
    <servlet-name>LoginServlet</servlet-name>
    <servlet-class>com.cj.view.LoginServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>LoginServlet</servlet-name>
    <url-pattern>/LoginServlet</url-pattern>
  </servlet-mapping>
  <servlet>
    <description></description>
    <display-name>LoginCLServlet</display-name>
    <servlet-name>LoginCLServlet</servlet-name>
    <servlet-class>com.cj.contraler.LoginCLServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>LoginCLServlet</servlet-name>
    <url-pattern>/LoginCLServlet</url-pattern>
  </servlet-mapping>
  <servlet>
    <description></description>
    <display-name>MainFrame</display-name>
    <servlet-name>MainFrame</servlet-name>
    <servlet-class>com.cj.view.MainFrame</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>MainFrame</servlet-name>
    <url-pattern>/MainFrame</url-pattern>
  </servlet-mapping>
</web-app>

沧海.sea

请用jsp做视图，  servlet只适合做控制器