【飞瓜源码买卖】【微服务接口源码】【韩漫app源码】jsp指令源码

【飞瓜源码买卖】【微服务接口源码】【韩漫app源码】jsp指令源码_jsp 指令

时间：2024-12-29 19:20:45 来源：黄石麻将app源码

1.jspָ?指指令?Դ??
2.JSP ä¸ä¼ ä¸è½½ä»£ç 
3.求jsp登录源码急急急急急急急急急急急
4.JSP的7个动作指令——include指令

jsp指令源码_jsp 指令

jspָ??Դ??

JSP请求到Controller，Contr6oller可以请求到Service里处理，令源或者自己处理，指指令构造WebService客户端实例，令源然后调用Webservice。指指令飞瓜源码买卖

Webservice里获得数据库连接，令源微服务接口源码打开并查询数据库信息，指指令就是令源你的那张“cim_subscrb_”表，然后返回。指指令

然后再返回给JSP显示出来。令源

JSP ä¸ä¼ ä¸è½½ä»£ç

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1.é¦åä¸è¿ä¸¤ä¸ªåcommons-fileupload-1.2.1.jarï¼commons-io-1.3.2.jar

2.ç¼ååå°é¡µé¢

<%@ page language="java" pageEncoding="gbk"%>

<%@ taglib uri="/struts-tags" prefix="s" %>

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

<html>

<body>

<form action="<%=request.getContextPath()%>/UploadServlet" method="post" enctype="multipart/form-data">

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

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

file:<input type="file" name="file"><br>

</form>

</body>

</html>

3.ç¼åservlet

package cn.jci.upload.servlet;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.List;

import javax.servlet.ServletException;

import javax.servlet..jci.upload.servlet.UploadServlet</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>UploadServlet</servlet-name>

<url-pattern>/UploadServlet</url-pattern>

</servlet-mapping>

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

5.åå¸

okäº

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的7个动作指令——include指令

include指令是一个动态的include指令，用于包含某个页面，令源仅导入页面的指指令韩漫app源码body内容，不引入编译指令。令源其语法格式如下：或。指指令flush属性控制输出缓存，为ture时包含在被导入文件中，python爬虫源码视频为flase时在原文件中。通过第二种语法格式，可在被导入页面中添加额外请求参数。如：jsp-include.jsp，征文源码杯大赛使用动态导入语法导入scriplet.jsp。页面生成的Servlet源代码显示，动态导入仅使用include方法插入目标页面内容，而非完全导入。静态导入和动态导入的区别有三点：静态导入将导入页面代码完全融入，合成一个Servlet，而动态导入在Servlet中使用include方法引入内容；静态导入时被导入页面的编译指令生效，动态导入时失去作用，仅插入body内容；动态包含允许增加额外参数，参数可在forward-result页面使用request对象获取。forward指令与include指令相似，前者完全替代原有页面，后者则插入页面内容。本篇文章介绍的内容至此，如有帮助请点关注和赞，后续会继续更新。

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