【vpay数字币源码】【输入源码闪退】【React的源码书】考务管理系统源码jsp

【vpay数字币源码】【输入源码闪退】【React的源码书】考务管理系统源码jsp_考务管理系统源码

2024-11-06 13:27:11 来源：福禄源码

1.求jsp登录源码急急急急急急急急急急急
2.JSP运行原理什么

考务管理系统源码jsp_考务管理系统源码

求jsp登录源码急急急急急急急急急急急

登陆页面 index.jsp源码：

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4. Transitional//EN">

<html>

<head>

<title>login</title>

<!--

-->

</head>

<body>

用户名：<input type="text" name="username" ><br>

密码:<input type="password" name="userpass"><br>

</form>

</body>

</html>

-------------

LoginServlet.java 源码：

package servlet;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class LoginServlet extends HttpServlet {

* Constructor of the object.

public LoginServlet() {

super();

}

* Destruction of the servlet. <br>

public void destroy() {

super.destroy(); // Just puts "destroy" string in log

// Put your code here

}

* The doGet method of the servlet. <br>

* This method is called when a form has its tag value method equals to get.

* @param request the request send by the client to the server

* @param response the response send by the server to the client

* @throws ServletException if an error occurred

* @throws IOException if an error occurred

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

//获得jsp页面传输的参数

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

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

//判断

if(username.equals("user")&&userpass.equals("")){

response.sendRedirect("1.jsp");

}else if(username.equals("admin")&&userpass.equals("")){

response.sendRedirect("2.jsp");

}else{

response.sendRedirect("index.jsp");

}

* The doPost method of the servlet. <br>

* This method is called when a form has its tag value method equals to post.

* @param request the request send by the client to the server

* @param response the response send by the server to the client

* @throws ServletException if an error occurred

* @throws IOException if an error occurred

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

this.doGet(request, response);

}

* Initialization of the servlet. <br>

* @throws ServletException if an error occurs

public void init() throws ServletException {

// Put your code here

}

-------------

1.jsp:

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4. Transitional//EN">

<html>

<head>

<title>My JSP '1.jsp' starting page</title>

<!--

-->

</head>

<body>

This is 1.jsp <br>

</body>

</html>

-------------

2.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4. Transitional//EN">

<html>

<head>

<title>My JSP '1.jsp' starting page</title>

<!--

-->

</head>

<body>

This is 2.jsp <br>

</body>

</html>

JSP运行原理什么

JSP运行的底层机制可以概括为以下几个步骤：首先，当服务器接收到JSP请求时，管理JSP引擎会对JSP文件进行初步处理。系统这个阶段，源码vpay数字币源码JSP引擎会尝试将JSP代码转换为Java源代码，理系任何语法错误都会立即引发转换中断，统源输入源码闪退并在客户端和服务端显示出错信息。考务p考

一旦转换顺利，管理JSP引擎会利用Java编译器Javac将生成的系统Java源文件编译成Class文件，这是源码一种可执行的二进制格式。这一步确保了代码的理系高效执行，为系统提供了更好的统源并发处理能力，提升了响应速度。考务p考React的源码书然而，管理值得注意的系统是，多线程技术虽然能提升性能，迪士尼4期源码但同时也需要开发者严格遵守编程规范，因为多线程环境可能会带来并发问题和资源管理挑战。因此，妄想山海采集源码在设计多线程应用时，理解并遵循相关约束是至关重要的。