HTTP服務器GET命令

Question

我創建了一個服務器，我期待所以它只能理解將從瀏覽器發送，並會發送到獲得命令的響應指定HTTP GET命令將其展開;它不一定非常特別，必須在java 1.6上完成。

我不能確定如何實現這種或如何，甚至發送GET命令。 我的問題是：我怎麼發送和閱讀的GET命令，以及如何使用套接字，運行時沒有向我作出迴應。

package server; 

import java.net.*; 
import java.util.ArrayList; 
import java.util.Date; 
import java.util.List; 
import java.io.*; 

import blogs.Logs; 
import blogs.ServerMessages; 

import logins.StreamUP; 

public class TwipperServer implements Runnable { 
Socket csocket; 

TwipperServer(Socket csocket) { 
    this.csocket = csocket; 
} 

Logs serverLogs = new Logs(); 
PrintWriter out = null; 
BufferedReader in = null; 
boolean loginBool = false; 
String tempUser = null; 
String tempPass = null; 
StreamUP strm = new StreamUP(); 
boolean userLogout = false; 
String strMessage = "Enter Username"; 
List<ServerMessages> postedMessages = new ArrayList<ServerMessages>(); 

@SuppressWarnings("resource") 
public static void main(String[] args) throws IOException { 
    ServerSocket serverSocket = new ServerSocket(9999); 
    while (true) { 
     Socket clientSocket = serverSocket.accept(); 

     new Thread(new TwipperServer(clientSocket)).start(); 
    } 
} 

@SuppressWarnings("deprecation") 
private void chooseMethod(int num) throws IOException { 
    String inputLine; 

    switch (num) { 
    case 1:// add status 
     out.println("Enter status"); 
     inputLine = in.readLine(); 
     serverLogs.addMessage(tempUser, new Date(), inputLine); 
     serverLogs.updateLogs(); 
     break; 
    case 2:// remove status by specific date and hour 
     int year, 
     month, 
     date, 
     hrs, 
     min = 0; 
     out.println("Enter year"); 
     year = Integer.parseInt(in.readLine()); 
     out.println("Enter month"); 
     month = Integer.parseInt(in.readLine()); 
     out.println("Enter day"); 
     date = Integer.parseInt(in.readLine()); 
     out.println("Enter hour"); 
     hrs = Integer.parseInt(in.readLine()); 
     Date de = new Date(year - 1900, month - 1, date, hrs, min); 
     List<ServerMessages> removeLogs = new ArrayList<ServerMessages>(); 

     for (ServerMessages temp : serverLogs.messageLogs) { 
      if (temp.getUser().equals(tempUser)) { 
       if (temp.getDate().getYear() == de.getYear() 
         && temp.getDate().getMonth() == de.getMonth() 
         && temp.getDate().getDay() == de.getDay()) { 
        int hour = de.getHours(); 
        int compare = temp.getDate().getHours(); 
        if (compare == hour) 
         removeLogs.add(temp); 
       } 
      } 
     } 
     serverLogs.messageLogs.removeAll(removeLogs); 
     serverLogs.updateLogs(); 
     break; 
    case 3:// show messages containing specific hashtag 
     String hashTag; 
     out.println("Enter hashtag you wish to search"); 
     hashTag = in.readLine(); 

     for (ServerMessages temp : serverLogs.messageLogs) { 
      temp.getHash(hashTag); 
     } 
     break; 
    case 4: 
     for (ServerMessages n : serverLogs.messageLogs) { 
      System.out.println(n.getData()); 
     } 
     break; 
    default: 
     break; 
    } 
} 

@Override 
public void run() { 
    try { 
     out = new PrintWriter(csocket.getOutputStream(), true); 
     in = new BufferedReader(new InputStreamReader(
       csocket.getInputStream())); 

     String inputLine; 
     int inputCom; 

     while (userLogout == false) { 
      while (loginBool == false) {// how to send html password request 
       out.println(strMessage);// for username and password 
       tempUser = in.readLine(); 
       out.println("Enter password: "); 
       tempPass = in.readLine(); 
       loginBool = strm.validity(tempUser, tempPass); 
       strMessage = "Incorrect username or password. Please try again. Enter Username: "; 
      }// end while loop for login check 
      strMessage = "Press 1 to add message"; 
      out.println(strMessage); 
      inputLine = in.readLine(); 
      inputCom = Integer.parseInt(inputLine); 

      try { 
       chooseMethod(inputCom);// what to do 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     }// end while loop for userlogout 
    } catch (IOException e) { 
     System.out 
       .println("Exception caught when trying to listen on port " 
         + 9999 + " or listening for a connection"); 
     System.out.println(e.getMessage()); 
    } finally { 
     try { 
      in.close(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
     out.close(); 
     try { 
      csocket.close(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 
} 
} 

Answer 1

下面是使用HTTP協議的一個很好的總結頁（雖然隨意搜索，並找到其他）：http://www.jmarshall.com/easy/http/。 基本上，http只是發送一個文本流到套接字並接收響應。請求以「GET」開始（例如「GET/some/path HTTP/1.0」）。可能有也可能沒有額外的標題和數據。響應類似於「」，例如， 「HTTP/1.0 200 OK」，然後是標題和數據（包括內容）。

這是可實現的項目，因爲HTTP是請求/響應的一個簡單的協議。

如果你真的問如何從套接字讀/寫，這是從插座一個簡單的讀取（JavaDoc規定的API），直到你達到要求的結束，然後發送響應。