抛弃框架的基于纯 Java Servlet 与 JSP的网站系统开发

vb2005xu

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框架 JSP Servlet Java MVC

我一个朋友初学JAVA,让我给他讲讲Web开发这方面的东西,老实说几年前用过的Struts现在早就忘光了...

平常接些JAVA单子基本也就用 nutz 和 spring mvc ,sese [自己拼的一个小框架] 这3种东西

但是这些对初学者似乎还是很复杂.

让我给他讲 struts 确实不会,就按我的思路给讲好了 ... 以上都是废话...

作为现在流行的java web开发框架,基本都是MVC导向的... 此处我就歪歪下自己的想法

剥掉 M 就只剩余 C + V ,把 JSP+JSTL+EL 指向模版视图[V] , 那么把V完全可以无视了,此时只剩下控制器 C

现在很多框架把 控制器 使用非Servlet的类来实现,方便测试吧,可能... 那么此处也就遵循好了,方便测试吧...

public abstract class BaseController {
	
	protected IRequestEntry requestEntry ;

	public void init(){}

	public abstract boolean executeAction(String actionName) ;
	
	public static BaseController newInstance(String controllerClass) {
		try {
			Object controller = Class.forName(controllerClass).newInstance();
			if (controller instanceof BaseController){
				return (BaseController) controller ;
			}
		}
		catch(ClassNotFoundException ex){}
		catch(Exception ex){}
		
		return null ;
	}

	public IRequestEntry getRequestEntry() {
		return requestEntry;
	}

	public void setRequestEntry(IRequestEntry requestEntry) {
		this.requestEntry = requestEntry;
	}

}

这样的控制器应该能够接受吧,算是基础类了吧... 无论是 spring mvc 还是 struts 基本都有一个分发器对象,用来将请求发送到指定的控制器/Action里面,此处衍生了N多的XML配置文件,这样的我很不喜欢,说白了就是单一入口 的功能呗

我很讨厌 XML配置文件,很无语... 当初使用XML的目的,我感觉应该是为了解耦合和自定义常用参数 ... 可惜到现在膨胀到

方方面面写代码的同时还要写XML,还美其名曰为了解耦和我不知道到底实现了没有反正我不喜欢... 这也是我为什么从JAVA转行到PHP的原因之一.... 可能是我畏惧吧

IRequestEntry

作用就是请求的入口点里面封装了常用的一些方法:

public interface IRequestEntry extends IDataService {
	
	public String getRequestParameter(String parameter) ;
	
	public void setView(String view,String format) ;
	
	public void setView(String view) ;
	
	public void assign(String key,Object value) ;
	
	public boolean isPost() ;
	
	public boolean isGet() ;
	
	public boolean isAjax() ;
}

IDataService

interface IDataService {
	public void service(Object request) throws Exception ;
}

请求的入口点的作用最明显的就是充当分发器...

为了尽可能的不使用配置文件这里使用惯例设置吧通过URI中挂载的参数来传递控制器和 action 名字进来 , 并通过这些信息来加载指定的控制器对象,这里

HttpRequestEntry

public class HttpRequestEntry extends HttpServlet implements IRequestEntry {
	
	// 控制器基本信息
	private String controllerPackage = "" , currentController = "Application" ,currentAction = "index" ;
	private String viewBaseDir = "" ;
	
	private HttpServletRequest request = null ;

	public void init() throws ServletException {
		super.init();
		this.setControllerPackage(this.getInitParameter("controllerPackage"));
		this.setViewBaseDir(this.getInitParameter("viewBaseDir")) ;
		
		// ServletContext context = this.getServletContext();
		// -- load and init db pool
	}
	
	public void service(Object request) throws ControllerNotFound,ActionNotFound {
		// parseURI  -- load controller
		String controllerClass = this.getControllerClass(this.currentController) ;
		BaseController controller = BaseController.newInstance(controllerClass) ;
		
		if (controller != null){
			controller.setRequestEntry(this);
			
			boolean isExistAction = controller.executeAction(this.currentAction);
			if (!isExistAction){
				throw new ActionNotFound(controllerClass,this.currentAction) ;
			}
		}else {
			throw new ControllerNotFound(controllerClass) ;
		}
	}
	
	/**
	 * 每次Http请求,此方法仅仅执行一次
	 */
	public void service(HttpServletRequest request,HttpServletResponse response)
		throws IOException, ServletException {
		
		this.request = request ;
		
		this.setCurrentController(request.getParameter("controller"));
		this.setCurrentAction(request.getParameter("action"));	
		try {
			this.service(request);
			
		} catch (ControllerNotFound ex) {
			System.out.println(ex.getLocalizedMessage());
		} catch (ActionNotFound ex) {
			System.out.println(ex.getLocalizedMessage());
		}
		
		String viewName = this.getView() ;
		if (viewName != null){
			// 渲染视图
			String viewPath = "" ;
			
			if (this.viewBaseDir.endsWith("/"))
				viewPath = this.viewBaseDir + viewName ;
			else
				viewPath = this.viewBaseDir + "/" + viewName ;
			
			RequestDispatcher rd = this.getServletContext().getRequestDispatcher(viewPath);
			if (rd != null){
				rd.forward(request, response);
				
			}else {
				System.out.println("cannot load view file: " + viewPath);
			}
		}

	}

	// public boolean forward(String path){}

	// public boolean redirect(String uri,int timeout){}
	
	public String getRequestParameter(String parameter){
		return this.request.getParameter(parameter) ;
	}
	
	public void setView(String view,String format){
		this.request.setAttribute("#view#",view) ;
	}
	
	public String getView(){
		Object view = request.getAttribute("#view#") ;
		return  view != null ? (String) view : null ;
	}
	
	public void setView(String view){
		this.request.setAttribute("#view#","JSP") ;
	}
	
	public void assign(String key,Object value){
		this.request.setAttribute(key, value) ;
	}
	
	public boolean isPost(){
		return this.request.getMethod().equals("POST");
	}
	
	public boolean isGet(){
		return this.request.getMethod().equals("GET");
	}
	
	public boolean isAjax(){
		String r = this.request.getHeader("HTTP_X_REQUESTED_WITH") ;
		if (r != null && "xmlhttprequest".equals(r.toLowerCase())) return true ;
		return false ;
	}
	
	public String getControllerClass(String controller){
		return this.controllerPackage == "" ? controller : this.controllerPackage + "." + controller ;
	}
	
	public String getCurrentController() {
		return this.currentController;
	}

	public void setCurrentController(String currentController) {
		if (currentController == null || "".equals(currentController.trim()))
			currentController = "Application" ;
		else 
			currentController = com.moogens.Toolkit.toUpperFirstChar(currentController) ;
		
		this.currentController = currentController ;
	}

	public String getCurrentAction() {
		return this.currentAction;
	}

	public void setCurrentAction(String currentAction) {
		this.currentAction = currentAction == null ? "index" : currentAction ;
	}

	public String getControllerPackage() {
		return controllerPackage;
	}

	public void setControllerPackage(String controllerPackage) {
		this.controllerPackage = controllerPackage == null ? "" : controllerPackage;
	}

	public String getViewBaseDir() {
		return viewBaseDir;
	}

	public void setViewBaseDir(String viewBaseDir) {		
		if (viewBaseDir == null || "".equals(viewBaseDir.trim() ))
			viewBaseDir = "/WEB-INF/views" ;
		
		if (!viewBaseDir.startsWith("/")) 
			viewBaseDir = "/" + viewBaseDir ;
		
		String realBaseDir = getServletContext().getRealPath(viewBaseDir);
		File baseDir=new File(realBaseDir);
		if(!baseDir.exists()) baseDir.mkdir();
		this.viewBaseDir = viewBaseDir;
	}
}

重要的代码,此处因为每次HTTP请求只会执行1次,所以在这个方法里面去处理请求并负责常规的一些操作即可

public void service(HttpServletRequest request,HttpServletResponse response)
		throws IOException, ServletException {
		
		this.request = request ;
		
		this.setCurrentController(request.getParameter("controller"));
		this.setCurrentAction(request.getParameter("action"));	
		try {
			this.service(request);
			
		} catch (ControllerNotFound ex) {
			System.out.println(ex.getLocalizedMessage());
		} catch (ActionNotFound ex) {
			System.out.println(ex.getLocalizedMessage());
		}
		
		String viewName = this.getView() ;
		if (viewName != null){
			// 渲染视图
			String viewPath = "" ;
			
			if (this.viewBaseDir.endsWith("/"))
				viewPath = this.viewBaseDir + viewName ;
			else
				viewPath = this.viewBaseDir + "/" + viewName ;
			
			RequestDispatcher rd = this.getServletContext().getRequestDispatcher(viewPath);
			if (rd != null){
				rd.forward(request, response);
				
			}else {
				System.out.println("cannot load view file: " + viewPath);
			}
		}

	}

真正的数据处理的地方,加载控制器,执行action

	public void service(Object request) throws ControllerNotFound,ActionNotFound {
		// parseURI  -- load controller
		String controllerClass = this.getControllerClass(this.currentController) ;
		BaseController controller = BaseController.newInstance(controllerClass) ;
		
		if (controller != null){
			controller.setRequestEntry(this);
			
			boolean isExistAction = controller.executeAction(this.currentAction);
			if (!isExistAction){
				throw new ActionNotFound(controllerClass,this.currentAction) ;
			}
		}else {
			throw new ControllerNotFound(controllerClass) ;
		}
	}

控制器的一个例子

public final class Application extends BaseController {

	public Application() {
		// TODO: Add your code here
	}

       // 这个方法由子类自己实现,至于里面有多少个action 已经 action 对应的方法名字等等 必须在这里面
	public boolean executeAction(String action) {
			
		if (action.equals("index")){		
			this.indexAction();	
			return true ;
		}else if (action.equals("show")){
			this.showAction();	
			return true ;
		}
		
		return false ;
	}

	protected void indexAction(){
		 this.requestEntry.assign("title",this.toString() + " [indexAction]");
		 this.requestEntry.setView("application.jsp","JSP");
	}
	
	protected void showAction(){
		this.requestEntry.assign("title",this.toString() + " [showAction]");
		this.requestEntry.setView("application.jsp","JSP");
	}
}

基本Over了这样的代码在 Tomcat6上确实可以跑不知道效率怎么样我也不知道 .... 应该是够简单明了的

我从接触计算机书籍的第一天起, 就认准一个死理:”如果你想从垃圾堆中找点吃的, 那么你就买中国人写的计算机书籍吧.”

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

做过小结: 附件代码

info.zip (16.8 KB)
下载次数: 28

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我也来推荐下 Nutz | 卖书,整理抽屉所得,要的话给我留言

2010-12-22 11:31
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评论(14)
分类:编程语言
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14 楼 wuhen1230 2014-05-13

wuhen1230 写道

vb2005xu 写道

wuhen1230 写道

附件需要解压密码啊.

我也忘了

没过关(写错了.没关系),我也写了个类似的东东,参考下.呵呵.博主的博客相当给力啊!

13 楼 wuhen1230 2014-05-13

vb2005xu 写道

wuhen1230 写道

附件需要解压密码啊.

我也忘了

没过关,我也写了个类似的东东,参考下.呵呵.博主的博客相当给力啊!

12 楼 vb2005xu 2014-05-13

wuhen1230 写道

附件需要解压密码啊.

我也忘了

11 楼 wuhen1230 2014-05-12

附件需要解压密码啊.

10 楼 vb2005xu 2011-01-13

看看视图页面吧

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="kencore" uri="http://moogens.info/kenjsp/taglib/core"%>
<!DOCTYPE html>
<html>
    <head>
        <title>后台管理 -- 猪猪阵营(我的小屋)</title>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">         
        <link rel="stylesheet" type="text/css" media="screen" href="${applicationScope.frontWebMaster.contextPath}css/app/accounts/style.css">
		<script src="${applicationScope.frontWebMaster.contextPath}js/moogens.js" type="text/javascript"></script>
    </head>
    <body>
		<div id='container'>
			
			<div id='header'>
				<ul id="site_nav" class="nav">
					<li><a href="#" class="homepage">首页</a></li>
					<li><a href="#">新闻</a></li>
					<li><a href="#">读书</a></li>
					<li><a href="#">应用</a></li>
					<li><a href="#">问答</a></li>
					<li><a href="#">更多</a></li>
				</ul>
				
				<ul id="user_nav" class="nav">
					<li><a href="#">欢迎 <b>开发者</b></a></li>
					<li><a href="#">收件箱</a></li>
					<li><a href="#">我的应用</a></li>
					<li><a href="#">我的叽歪</a></li>
					<li><a href="#">设置</a></li>
					<li><a href="#">退出</a></li>
				</ul>				
			</div><!-- end #header -->
			<div id='branding'>				
				<div style="width: 800px;height: 80px;font-size: 2.8em;">后台管理</div>				
			</div><!-- end #branding -->
			
			<div id='sidebar'>
				
				<ul>
					<li><a href='${applicationScope.frontWebMaster.contextPath}admin/application/config.php'>系统设置</a></li>
					<li><a href='${applicationScope.frontWebMaster.contextPath}admin/user/index.php'>用户管理</a></li>
					<li><a href='${applicationScope.frontWebMaster.contextPath}admin/appman/index.php'>应用管理</a></li>
					<li><a href='${applicationScope.frontWebMaster.contextPath}admin/news/index.php'>新闻管理</a></li>
					<li><a href='${applicationScope.frontWebMaster.contextPath}admin/comments/index.php'>评论管理</a></li>
					<li><a href='${applicationScope.frontWebMaster.contextPath}admin/attachment/index.php'>附件管理</a></li>
					<li><a href='${applicationScope.frontWebMaster.contextPath}admin/application/guard.php'>系统维护</a></li>
				</ul>
				
			</div><!-- end #sidebar -->
			
			<div id='mainContent'>
				<div id='contentBox'>
					<jsp:include page="${requestScope.contentPage}"></jsp:include>
				</div>				
				<br class='clearfloat' />
			</div><!-- end #mainContent -->
			
			<div id='footer'>
				<p>Copyright &copy; 2010 猪猪阵营(我的小屋). All rights reserved.</p>
			</div><!-- end #footer -->
			
				
		</div><!-- end #container -->
		
		
		<script type="text/javascript" charset="utf-8">
			
		</script>
    </body>
</html>

9 楼 vb2005xu 2010-12-31

package info.moogens.demo.pcmaster;

import info.moogens.mvc.Controller;
import info.moogens.mvc.UDI;
import info.moogens.mvc.exception.ActionMistake;
import info.moogens.mvc.view.JspHtmlView;
import info.moogens.mvc.view.RawView;
import info.moogens.mvc.view.RedirectView;

public final class Application extends Controller {
	
	public void indexAction(){
		this.setView(new JspHtmlView("application.jsp")) ;
	}
	
	public void rawAction() throws ActionMistake{
		this.setView(new RawView("你的比赛打的垃圾博客")) ;
	}
	
	public void torootAction(){
		this.setView(new RedirectView("/")) ;
	}
	
	public void togoogleAction(){
		this.setView(new RedirectView("http://www.g.cn",2)) ;
	}
	
	public void tobaiduAction(){
		this.setView(new RedirectView("http://www.baidu.com")) ;
	}
	
	public void toindexAction(){
		this.forword("index");
	}
	
	public void tobAction(){
		UDI udi = UDI.parseUDIString("/b");
		this.forword(udi);
	}
	
}

8 楼 vb2005xu 2010-12-30

控制器的例子

package info.moogens.demo.pcmaster;

import info.moogens.mvc.Controller;
import info.moogens.mvc.exception.ActionNotFound;
import info.moogens.mvc.view.JspHtmlView;
import info.moogens.mvc.view.RawView;
import info.moogens.mvc.view.RedirectView;

public final class Application extends Controller {

	@Override
	public void executeAction(String actionName) throws ActionNotFound {
		do {
			if (actionName.equals("index")){
				this.setView(new JspHtmlView("application.jsp")) ;
				break ;
			}
			else if (actionName.equals("raw")){			
				this.setView(new RawView("你的比赛打的垃圾博客")) ;
				break ;
			} 
			else if (actionName.equals("toroot")){			
				this.setView(new RedirectView("/")) ;
				break ;
			} 
			else if (actionName.equals("togoogle")){			
				this.setView(new RedirectView("http://www.g.cn",2)) ;
				break ;
			} 
			else if (actionName.equals("tobaidu")){			
				this.setView(new RedirectView("http://www.baidu.com")) ;
				break ;
			} 
			
			throw new ActionNotFound(this.getClass().getName(),actionName);
			
		} while(false) ;		
	}

}

7 楼 vb2005xu 2010-12-30

把视图那块重新设计了下:

package info.moogens.mvc;

import info.moogens.mvc.exception.ViewNotFound;
import info.moogens.mvc.exception.ViewRenderFailed;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public abstract class View {

	public static final String contentType_JSON = "application/json";
	public static final String contentType_XML = "text/xml";
	public static final String contentType_HTML = "text/html";

	protected String contentType;

	public String getContentType() {
		return contentType;
	}

	protected void sendResponseContentType(HttpServletRequest request,
			HttpServletResponse response) {
		if (info.moogens.Toolkit.notEmpty(contentType)) {
			response.setContentType(contentType + ";charset="
					+ request.getAttribute("currentCharset"));
		}
	}

	/**
	 * 渲染视图,此方法由HttpRequestMaster调用,开发者不应手动调用
	 * 
	 * 成功渲染必须返回null,否则继续返回视图对象
	 * 
	 * @param master
	 * @param request
	 * @param response
	 * @return View
	 * @throws ViewNotFound
	 * @throws ViewRenderFailed
	 */
	public abstract View make(HttpRequestMaster master,
			HttpServletRequest request, HttpServletResponse response)
			throws ViewNotFound, ViewRenderFailed;

}

JSP 生成HTML 模版的例子

package info.moogens.mvc.view;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import info.moogens.mvc.HttpRequestMaster;
import info.moogens.mvc.View;
import info.moogens.mvc.exception.ViewNotFound;
import info.moogens.mvc.exception.ViewRenderFailed;

public class JspHtmlView extends TemplateView {
	
	protected String contentType = View.contentType_HTML ;
	
	protected JspHtmlView(){}
	
	/**
	 * template 文件名称 如果以 / 开始 则直接取 /下的JSP文件,否则调用 master.getViewBaseDir() 下的模版文件
	 * 
	 * @param template
	 */
	public JspHtmlView(String template) {
		this.template = info.moogens.Toolkit.notEmpty(template) ? template.trim() : null ;
	}

	@Override
	public View make(HttpRequestMaster master,HttpServletRequest request, HttpServletResponse response)
			throws ViewNotFound, ViewRenderFailed {
				
		if (template != null){
			
			// 响应信息未发出时才能渲染 JSP视图
			if (response.isCommitted()){ 
				return new RawView("response had committed before render view: " + template);
			}
			
			String templatePath = template.startsWith("/") ? template :	master.getViewBaseDir() + template ;			
			RequestDispatcher rd = master.getServletContext().getRequestDispatcher(templatePath);
			
			if (rd == null) throw new ViewNotFound(template);
			
			try {
				rd.forward(request, response);				
			} catch (ServletException e) {
				throw new ViewRenderFailed(template,e.getMessage());
			} catch (IOException e) {
				throw new ViewNotFound(template);
			} finally {
				templatePath = null ;
				rd = null ;
			}
		}
		return null;
	}
	
}

6 楼 vb2005xu 2010-12-23

配置成功了利用原始的 servlet映射能够基本做到 URL路由的功能,正在实现呵呵为了周六而奋写 ... 这几天公司幸亏没有事情日

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
    version="2.4">

    <display-name>Kenjsp: Use simple tech create web project!</display-name>
    <description>
	简易Servlet构建的站点
    </description>

	<session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    
    <welcome-file-list>
		<welcome-file>
            application.php
        </welcome-file>
    </welcome-file-list>
	
	<!--
    <servlet>
        <servlet-name>HelloServlet</servlet-name>
        <servlet-class>mypackage.Hello</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>HelloServlet</servlet-name>
        <url-pattern>/hello</url-pattern>
    </servlet-mapping>
	-->
	
    <servlet>
    	<description>网站前端应用入口</description>
        <servlet-name>front.entry</servlet-name>
        <servlet-class>info.moogens.web.HttpRequestEntry</servlet-class>
        
        <!-- //控制器设置 -->
        <init-param>
        	<param-name>controllerPackage</param-name>
        	<param-value>info.test.controller</param-value>
        </init-param>
                
        <!-- //视图设置 -->
        <init-param>
        	<param-name>viewBaseDir</param-name>
        	<param-value>/WEB-INF/views/front-entry</param-value>
        </init-param>
        
        <!-- //DB设置 -->
        <init-param>
        	<param-name>dbDriver</param-name>
        	<param-value>org.gjt.mm.mysql.Driver</param-value>
        </init-param>
        <init-param>
        	<param-name>dbUrl</param-name>
        	<param-value>
        		jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf8
        	</param-value>
        </init-param>
        <init-param>
        	<param-name>dbUsername</param-name>
        	<param-value>root</param-value>
        </init-param>
        <init-param>
        	<param-name>dbPassword</param-name>
        	<param-value>root</param-value>
        </init-param>
        
        <load-on-startup>1</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>front.entry</servlet-name>
        <url-pattern>*.php</url-pattern>
    </servlet-mapping>
    
    
    <servlet>
    	<description>网站后台应用入口</description>
        <servlet-name>admin.entry</servlet-name>
        <servlet-class>info.moogens.web.HttpRequestEntry</servlet-class>
        
        <!-- //控制器设置 -->
        <init-param>
        	<param-name>controllerPackage</param-name>
        	<param-value>info.test.controller</param-value>
        </init-param>
                
        <!-- //视图设置 -->
        <init-param>
        	<param-name>viewBaseDir</param-name>
        	<param-value>/WEB-INF/views/admin-entry</param-value>
        </init-param>
        
        <!-- //DB设置 -->
        <init-param>
        	<param-name>dbDriver</param-name>
        	<param-value>org.gjt.mm.mysql.Driver</param-value>
        </init-param>
        <init-param>
        	<param-name>dbUrl</param-name>
        	<param-value>
        		jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf8
        	</param-value>
        </init-param>
        <init-param>
        	<param-name>dbUsername</param-name>
        	<param-value>root</param-value>
        </init-param>
        <init-param>
        	<param-name>dbPassword</param-name>
        	<param-value>root</param-value>
        </init-param>
        
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>admin.entry</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    
    <!-- // 过滤器设置 -->
    
    <filter>
    	<description>字符集过滤</description>
		<filter-name>charsetFilter</filter-name>
		<filter-class>info.moogens.web.tool.CharsetFilter</filter-class>
		<init-param>
    		<param-name>charset</param-name>
      		<param-value>UTF-8</param-value>
    	</init-param>
	</filter>
	<filter-mapping>
		<!-- // 仅仅对过滤*.php的请求 做字符集过滤-->
		<filter-name>charsetFilter</filter-name>
		<url-pattern>*.php</url-pattern>
	</filter-mapping>
	
	
</web-app>

5 楼 vb2005xu 2010-12-23

在社区找到两个好的帖子比较适合我上边所说的东西 :

db
1. http://www.iteye.com/topic/370625
2. http://www.iteye.com/topic/66066

4 楼 vb2005xu 2010-12-22

地址栏这么写: 暂时的写法:

http://localhost:8080/kenjsp/application.php?action=show

3 楼 houxinyou 2010-12-22

这个东西挺好呀,在网页地址栏里应该怎么请求呀?

2 楼 ml365 2010-12-22

呵呵。我刚学java的时候，也是从接触servlet开始的，那时候觉得java好轻便，还可以自己组合sql。后来越来越多的框架，我都是被迫学的。呵呵。无奈。支持下！

1 楼 vb2005xu 2010-12-22

欢迎大家评论啊

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