自写控制层小框架
我是一个java菜鸟！近来在学习java，也想写点小东西。希望各位大侠给我指正编码中的问题。谢谢了！
package dj.dnsp.servlet;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Properties;
public class propertiesUtil {
public static propertiesUtil pUtil= null;
public static Properties ps = null;
public static HashMap sourceMap = new HashMap();
private InputStream in = null;
public propertiesUtil(){
in = this.getClass().getResourceAsStream("properties.properties");
System.out.println("开始 properties");
}
public static propertiesUtil getPropertiesUtil(){
if(null == pUtil){
pUtil = new propertiesUtil();
}
return pUtil;
}
public static Properties getProperties(){
if(null == ps){
ps = new Properties();
}
try {
ps.load(propertiesUtil.getPropertiesUtil().in);
} catch (IOException e) {
e.printStackTrace();
}
return ps;
}
public static HashMap getMap(){
//得到所有的主键信息（这里的主键信息主要是简化的主键，也是信息的关键）
Enumeration en = propertiesUtil.getProperties().keys();
while(en.hasMoreElements()){
String key = (String)en.nextElement();
String message = propertiesUtil.getProperties().getProperty(key);
sourceMap.put(key, message);
}
return sourceMap;
}
}
package dj.dnsp.servlet;
import java.io.IOException;
import java.util.Properties;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class servlet extends HttpServlet {
protected void doGet(HttpServletRequest rep, HttpServletResponse res) throws ServletException, IOException {
action at = null;
String actionName = (String)rep.getParameter("actionName");
System.out.println(actionName);
// Properties ps = propertiesUtil.getProperties();
// String action = ps.getProperty(actionName);
String action = (String)propertiesUtil.getMap().get(actionName);
System.out.println(action);
try {
at = (action)Class.forName(action).newInstance();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
System.out.println("star");
at.service(rep, res);
}
protected void doPost(HttpServletRequest rep, HttpServletResponse res) throws ServletException, IOException {
doGet(rep, res);
}
}
package dj.dnsp.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public abstract class action extends HttpServlet {
public abstract void service(HttpServletRequest rep, HttpServletResponse res) throws ServletException, IOException ;
public abstract void forward(HttpServletRequest rep,HttpServletResponse res)throws ServletException,IOException;
}
package dj.dnsp.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class loginAction extends action{
public void service(HttpServletRequest rep, HttpServletResponse res) throws ServletException, IOException {
PrintWriter out = res.getWriter();
System.out.println("-------start-----------");
out.println("<html>");
out.println("<head><title>MVCTest</title></head>");
out.println("<body><h1>SUCCESS</h1></body>");
out.println("</html>");
System.out.println("---------over----------");
}
public void forward(HttpServletRequest rep, HttpServletResponse res) throws ServletException, IOException {
}
}
<%@ page language="java" import="java.util.*" pageEncoding="GB2312"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="action?actionName=login" method = "post">
<table>
<tr>
<td>
<input type ="text" name = "name" id = "name">
</td>
</tr>
<tr>
<td>
<input type ="submit" name = "n" id = "n" value="提交">
</td>
</tr>
</table>
</form>
</body>
</html>