一个简单Tomcat实现

搜诶符合你 · 发表于 2017-1-22 08:42:42

package com.dqm.tomcat;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Date;
import java.util.StringTokenizer;
interface Serlet {
public String getContext();
}
class HelloSerlet implements Serlet {
public String getContext() {
// TODO Auto-generated method stub
return "hello java";
}
}
class DateSerlet implements Serlet {
public String getContext() {
// TODO Auto-generated method stub
return "now time is"+new Date();
}
}
public class Tomcat {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
ServerSocket server = new ServerSocket(8080);
Socket client ;
BufferedReader br = null;
while(true){
client = server.accept();
br = new BufferedReader(
new InputStreamReader(client.getInputStream()));
String command = br.readLine();
StringTokenizer stk = new StringTokenizer(command);
System.out.println(stk.nextToken());
String sStr = stk.nextToken().substring(1);
sStr = "com.dqm.tomcat."+sStr;
System.out.println(sStr);
PrintStream ps = new PrintStream(client.getOutputStream());
ps.println("<html>");
ps.println("<body>");
try {
Serlet serlet = (Serlet)Class.forName(sStr).newInstance();
ps.println(serlet.getContext());
System.out.println(serlet.getContext());
} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ps.println("</body>");
ps.println("</html>");
System.out.println(ps.toString());
ps.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

　　在地址栏输入：http://127.0.0.1/DateSerlet
　　http://127.0.0.1/HelloSerlet
　　查看不同的显示结果

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[经验分享] 一个简单Tomcat实现

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