如何在HttpClient中做請求？

Question

我使用jersey框架和java編寫REST結婚服務。 如果用戶想請求HTTPGET在嫋嫋，他需要像寫：

curl -u username:password -H "Content-Type:application/...." http://localhost:8080/project/user 

現在，我實現機器人，它將調用Web服務。 有誰知道如何在android中使用HttpClient來調用Web服務？ 如何在HttpClient中設置用戶名和密碼以匹配curl命令-u username:password？

感謝

Answer 1

@sudo試試這個簡單的代碼

HttpURLConnection的康恩= NULL;

try { 
     // The formated URL will be "http://www.androidcoder.org:80". 
     URL url = new URL(String.format("http://%s:%d/%s", mIpAddress, mPort, mSubPage)); 
     conn = (HttpURLConnection) url.openConnection(); 

     conn.setRequestMethod("GET"); 
     conn.setRequestProperty("Content-length", "0"); 
     conn.setUseCaches(false); 
     conn.setAllowUserInteraction(false); 
     conn.setConnectTimeout(TIMEOUT); 
     conn.setReadTimeout(TIMEOUT); 

     // NOTE: Below is used to perform the http authentication. It is working in JAVA but not 
     // always working in Android platform. 

     // Set to use the default HTTP authentication. Working in JAVA, but not working in 
     // Android. 
     Authenticator.setDefault(new Authenticator() { 
      protected PasswordAuthentication getPasswordAuthentication() { 
       return new PasswordAuthentication("user1", "pass1".toCharArray()); 
      } 
     }); 
     conn.connect(); 

     System.out.println(conn.getResponseCode()); // <-- The request will stop here if running 
                // in Android. 
     System.out.println(conn.getResponseMessage()); 

     printOutput(conn); 

    } catch (MalformedURLException e) { 
     // TODO: Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IOException e) { 
     // Operation timed out. 
     System.out.println(e.getMessage()); 
     e.printStackTrace(); 
    } finally { 
     if (conn != null) { 
      conn.disconnect(); 
      conn = null; 
     } 
    } 
} 

/** 
* @brief print the output of the HTTP connection. 
* @param conn [in] Http connection. 
*/ 
private static void printOutput(HttpURLConnection conn) throws IOException { 
    int length = 256; 
    byte bytes[] = new byte[length]; 
    InputStream is = conn.getInputStream(); 

    while (is.available() > 0) { 

     if (is.available() < length) { 
      length = is.available(); 
     } 
     conn.getInputStream().read(bytes, 0, length); 
     System.out.println(bytes); 
    } 
} 

Answer 2

package com.android.demo; 


import org.apache.http.HttpEntity; 

import org.apache.http.HttpHost; 

import org.apache.http.HttpResponse; 

import org.apache.http.auth.AuthScope; 

import org.apache.http.auth.UsernamePasswordCredentials; 

import org.apache.http.client.HttpClient; 

import org.apache.http.client.methods.HttpGet; 

import org.apache.http.impl.auth.BasicScheme; 

import org.apache.http.impl.client.AbstractHttpClient; 

import org.apache.http.impl.client.DefaultHttpClient; 

import org.apache.http.protocol.BasicHttpContext; 

import org.apache.http.util.EntityUtils; 

import android.app.Activity; 
import android.os.Bundle; 

public class MyActivity extends Activity{ 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    /* START Test/Play with beanstalk API */ 
    String username = "user1"; 
    String host = "my.host.com"; 
    String password = "password"; 

    String urlBasePath = "http://" + username + ".host.com/api/"; 
    String urlApiCall_FindAllRepositories = urlBasePath 
      + "repositories.xml"; 

    try { 
     HttpClient client = new DefaultHttpClient(); 

     AuthScope as = new AuthScope(host, 443); 
     UsernamePasswordCredentials upc = new UsernamePasswordCredentials(
       username, password); 

     ((AbstractHttpClient) client).getCredentialsProvider() 
       .setCredentials(as, upc); 

     BasicHttpContext localContext = new BasicHttpContext(); 

     BasicScheme basicAuth = new BasicScheme(); 
     localContext.setAttribute("preemptive-auth", basicAuth); 

     HttpHost targetHost = new HttpHost(host, 443, "https"); 

     HttpGet httpget = new HttpGet(urlApiCall_FindAllRepositories); 
     httpget.setHeader("Content-Type", "application/xml"); 

     HttpResponse response = client.execute(targetHost, httpget, 
       localContext); 

     HttpEntity entity = response.getEntity(); 
     Object content = EntityUtils.toString(entity); 



    } catch (Exception e) { 
     e.printStackTrace(); 

    } 


} 
} 

希望這個代碼將有助於