Http

使用 HTTP 服务: 

1. 
Apache HttpClinet 
Http GET 
Http POST 


a.创建 HttpClient 
b.初始 HTTP GET 方法或 POST 方法. 
c.设置参数 键值对 
d.执行 HTTP 调用 
e.处理 HTTP 回复 

HTTP GET 示例:

 public class TestHttpGetMethod{
     public void get(){
         BufferedReader in = null;

         try{
             HttpClient client = new DefaultHttpClient();
             HttpGet request = new HttpGet();
             request.setURI("http://w26.iteye.com");
             HttpResponse response = client.execute(request);

             in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
             StringBuffer sb = new StringBuffer("");
             String line = "";
             String NL = System.getProperty("line.separator");
             while((line = in.readLine()) != null){
                 sb.append(line + NL);
             }
             in.close();
             String page = sb.toString();

             Log.i(TAG, page);



         }catch(Exception e){
             Log.e(TAG,e.toString())
         }finally{
             if(in != null){
                 try{
                     in.close();
                 }catch(IOException ioe){
                     Log.e(TAG, ioe.toString());
                 }
             }

         }
     }
 }

 public class TestHttpGetMethod{
     public void get(){
         BufferedReader in = null;

         try{
             HttpClient client = new DefaultHttpClient();
             HttpGet request = new HttpGet();
             request.setURI("http://w26.iteye.com");
             HttpResponse response = client.execute(request);

             in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
             StringBuffer sb = new StringBuffer("");
             String line = "";
             String NL = System.getProperty("line.separator");
             while((line = in.readLine()) != null){
                 sb.append(line + NL);
             }
             in.close();
             String page = sb.toString();

             Log.i(TAG, page);



         }catch(Exception e){
             Log.e(TAG,e.toString())
         }finally{
             if(in != null){
                 try{
                     in.close();
                 }catch(IOException ioe){
                     Log.e(TAG, ioe.toString());
                 }
             }

         }
     }
 }

带参数的 HTTP GET:

 HttpGet request = new HttpGet("http://www.baidu.com/s?wd=amos_tl");
 client.execute(request);

 HttpGet request = new HttpGet("http://www.baidu.com/s?wd=amos_tl");
 client.execute(request);

HTTP POST 示例:

 public class TestHttpPostMethod{
     public void post(){
         BufferedReader in = null;

         try{
             HttpClient client = new DefaultHttpClient();
             HttpPost request = new HttpPost("http://localhost/upload.jsp");

             List<NameValuePair> postParams = new ArrayList<NameValuePair>();
             postParams.add(new BasicNameValuePair("filename", "sex.mov"));

             UrlEncodeFormEntity formEntity = new UrlEncodeFormEntity(postParams);
             request.setEntity(formEntity);

             HttpResponse response = client.execute(request);

             in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
             StringBuffer sb = new StringBuffer("");
             String line = "";
             String NL = System.getProperty("line.separator");
             while((line = in.readLine()) != null){
                 sb.append(line + NL);
             }
             in.close();
             String result = sb.toString();
             Log.i(TAG, result );

         }catch(Exception e){
             Log.e(TAG,e.toString())
         }finally{
             if(in != null){
                 try{
                     in.close();
                 }catch(IOException ioe){
                     Log.e(TAG, ioe.toString());
                 }
             }

         }
     }
 }

 public class TestHttpPostMethod{
     public void post(){
         BufferedReader in = null;

         try{
             HttpClient client = new DefaultHttpClient();
             HttpPost request = new HttpPost("http://localhost/upload.jsp");

             List<NameValuePair> postParams = new ArrayList<NameValuePair>();
             postParams.add(new BasicNameValuePair("filename", "sex.mov"));

             UrlEncodeFormEntity formEntity = new UrlEncodeFormEntity(postParams);
             request.setEntity(formEntity);

             HttpResponse response = client.execute(request);

             in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
             StringBuffer sb = new StringBuffer("");
             String line = "";
             String NL = System.getProperty("line.separator");
             while((line = in.readLine()) != null){
                 sb.append(line + NL);
             }
             in.close();
             String result = sb.toString();
             Log.i(TAG, result );

         }catch(Exception e){
             Log.e(TAG,e.toString())
         }finally{
             if(in != null){
                 try{
                     in.close();
                 }catch(IOException ioe){
                     Log.e(TAG, ioe.toString());
                 }
             }

         }
     }
 }

multipart POST 支持: 

需要以下支持: 
Commons IO 
http://commons.apache.org/io/ 

Mime4j 
http://james.apache.org/mime4j/ 

HttpMime 
http://hc.apache.org/httpcomponents-client/httpmime/index.html 

下载全部JAR网址: 
http://www.sayedhashimi.com/downloads/android/multipart-android.zip 



multipart POST 示例:

 public class TestHttpMultipartPost{
     public void mulPost(){
     try{
         InputStram in = this.getAssets().open("data.xml");
         HttpClient client = new HttpDefaultHttpClient();
         HttpPost request = new HttpPost("http://localhost/upload.jsp");
         byte[] data = IOUtils.toByteArray(in);
         InputStreamBody isb = new InputStreamBody(new ByteArrayIntputStream(data), "uploadedFile");
         StringBody sb1 = new StringBody("some text");
         StringBoyd sb2 = new StringBody("some text too");

         MultipartEntity me = new MultipartEntity();
         me.addPart("uploadedFile", isb);
         me.addPart("one" ,sb1);
         me.addPart("two" ,sb2);

         request.setEntity(me);
         HttpRespones response = client.excute(request);
         res.getEntity().getContent().close();

     } catch(Throwable e){
         Log.e(TAG, e.toString());
     }

     }

 }

 public class TestHttpMultipartPost{
     public void mulPost(){
     try{
         InputStram in = this.getAssets().open("data.xml");
         HttpClient client = new HttpDefaultHttpClient();
         HttpPost request = new HttpPost("http://localhost/upload.jsp");
         byte[] data = IOUtils.toByteArray(in);
         InputStreamBody isb = new InputStreamBody(new ByteArrayIntputStream(data), "uploadedFile");
         StringBody sb1 = new StringBody("some text");
         StringBoyd sb2 = new StringBody("some text too");

         MultipartEntity me = new MultipartEntity();
         me.addPart("uploadedFile", isb);
         me.addPart("one" ,sb1);
         me.addPart("two" ,sb2);

         request.setEntity(me);
         HttpRespones response = client.excute(request);
         res.getEntity().getContent().close();

     } catch(Throwable e){
         Log.e(TAG, e.toString());
     }

     }

 }

异常处理 
    重试处理 

多线程问题 
    使用 ClientConnectionManager ，创建一个线程安全的 HttpClient.

 public class ApplicationEx extends Application{
     public static final String TAG = "amos_tl";
     private HttpClient client = null;

     @override
     public void onCreate(){
         super.onCreate();
         client = createHttpClient();
     }

     @override
     public void onLowMemory(){
         super.onLowMemory();
         shutdownHttpClient();
     }

     @override
     public void onTerminate(){
         super.onTerminate();
         shutdownHttpClient();
     }

     private void shutdownHttpClient(){
         if(client != null && client.getConnectionManager() != null){
             client.getConnectionManager().shutdown();
             client = null;
         }
     }

     private HttpClient createHttpClient(){
         Log.d(TAG, "create httpclient ...");
         HttpParams params = new BasicHttpParams();
         HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
         HttpProtocolParams.setContentCharset(params, HTTP.DEFAULT_CONTENT_CHARSET);
         HttpProtocolParams.setUseExpectContinue(params, true);
         SchemaRegistry sr = new SchemaRegistry();
         sr.register(new Schema("http", PlainSocketFactory.getSocketFactory(), 80));
         sr.register(new Schema("https", SLLSocketFactory.getSocketFactory(), 443));
         ClientConnectionManager cm = new ThreadSafeClientConnManager(params, sr);

         return new DefaultHttpClient(cm, params);
     }

     public HttpClient getHttpClient(){
         return client;
     }


 }

 public class ApplicationEx extends Application{
     public static final String TAG = "amos_tl";
     private HttpClient client = null;

     @override
     public void onCreate(){
         super.onCreate();
         client = createHttpClient();
     }

     @override
     public void onLowMemory(){
         super.onLowMemory();
         shutdownHttpClient();
     }

     @override
     public void onTerminate(){
         super.onTerminate();
         shutdownHttpClient();
     }

     private void shutdownHttpClient(){
         if(client != null && client.getConnectionManager() != null){
             client.getConnectionManager().shutdown();
             client = null;
         }
     }

     private HttpClient createHttpClient(){
         Log.d(TAG, "create httpclient ...");
         HttpParams params = new BasicHttpParams();
         HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
         HttpProtocolParams.setContentCharset(params, HTTP.DEFAULT_CONTENT_CHARSET);
         HttpProtocolParams.setUseExpectContinue(params, true);
         SchemaRegistry sr = new SchemaRegistry();
         sr.register(new Schema("http", PlainSocketFactory.getSocketFactory(), 80));
         sr.register(new Schema("https", SLLSocketFactory.getSocketFactory(), 443));
         ClientConnectionManager cm = new ThreadSafeClientConnManager(params, sr);

         return new DefaultHttpClient(cm, params);
     }

     public HttpClient getHttpClient(){
         return client;
     }


 }

HttpActivity.java

 public class HttpActivity extends Activity{
     @override
     public void onCreate(Bundle savedInstanceState){
         super.onCreate(savedInstanceState);
         Log.d(TAG, "httpactivity startup...");
         getHttpContent();
     }

     private void getHttpContent(){
         try{
             ApplicationEx app = (ApplicationEx)this.getApplication();
             HttpClient client = app.getHttpClient();
             HttpGet request = new HttpGet();
             request.setURI("http://w26.iteye.com");
             HttpResponse response = client.excute(resquest);

             String page = EntityUtils.toString(response.getEntity());
             Log.i(TAG, page);
         }catch(Exception e){
              Log.e(TAG, e.toString());
         }
     }


    }