http请求开源框架: AsyncHttpClient

同步/异步:
同步: 在同一个线程里面执行的.

异步:开启新的线程

1.GET获取服务器信息:
public class MainActivity extends Activity
{
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[align=left]      private TextView  tv_code;[/align]
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[/align]
[align=left]      @Override[/align]
      protected void onCreate(Bundle
savedInstanceState) {
[align=left]             super.onCreate(savedInstanceState);[/align]
[align=left]            setContentView(R.layout. activity_main);[/align]
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             tv_code=(TextView)
findViewById(R.id. tv_code);
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[align=left]      /**[/align]
[align=left]       * Button触发事件[/align]
[align=left]       */[/align]
      public void 
click(View view){
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[align=left]             //创建AsyncHttpClient对象[/align]
[align=left]            AsyncHttpClient  client= new AsyncHttpClient();[/align]
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[align=left]            client.get( "http://www.baidu.com",new AsyncHttpResponseHandler(){[/align]
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                   public void onSuccess(String
content) {
[align=left]                         super.onSuccess(content);[/align]
[align=left]                         tv_code.setText(content);[/align]
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[align=left]                   @Override[/align]
                   public void onFailure(Throwable
error, String content) {
                    super.onFailure(error,
content);
                    Toast. makeText(getApplicationContext(), "获取失败.....",
0).show() ;
[align=left]                    error.printStackTrace();[/align]
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[align=left]              });[/align]
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[align=left]-------------------------------------------------------------------------------------------------[/align]
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[align=left]2.Get/Post请求提交数据到服务器[/align]
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public class LoginService
{
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[align=left]      /**[/align]
[align=left]       * GET方法获取服务器信息[/align]
[align=left]       * @param context[/align]
[align=left]       * @param userName[/align]
[align=left]       * @param passWord[/align]
[align=left]       */[/align]
      public static void loginByGet( final Context
context,String userName,String passWord){
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[align=left]            String path= "http://192.168.1.8/Web/LoginServlet?userName=" +URLEncoder. encode(userName)+ "&passWord=" +URLEncoder. encode(passWord);[/align]
[align=left]            [/align]
[align=left]            [/align]
[align=left]             //创建AsyncHttpClient对象[/align]
[align=left]            AsyncHttpClient  client= new AsyncHttpClient();[/align]
            client.get(path, new 
AsyncHttpResponseHandler(){
[align=left]                   @Override[/align]
                   public void onSuccess(String
content) {
[align=left]                         super.onSuccess(content);[/align]
                        Toast. makeText(context, "请求成功",
0).show();
[align=left]                  }[/align]
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[align=left]                   @Override[/align]
                   public void onFailure(Throwable
error, String content) {
                     super.onFailure(error,
content);
                     Toast. makeText(context, "请求失败",
0).show();
[align=left]                      error.printStackTrace();  //打印失败信息[/align]
[align=left]                  }[/align]
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[align=left]            });[/align]
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[align=left]      }[/align]
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[align=left]      /**[/align]
[align=left]       * POST方法提交数据到服务器[/align]
[align=left]       * @param context[/align]
[align=left]       * @param userName[/align]
[align=left]       * @param passWord[/align]
[align=left]       */[/align]
      public static void 
 ( final Context context,String userName,String
passWord){
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[align=left]            String path= "http://192.168.1.8/Web/LoginServlet";[/align]
[align=left]            [/align]
[align=left]             //创建AsyncHttpClient对象[/align]
[align=left]            AsyncHttpClient  client= new AsyncHttpClient();[/align]
[align=left]            [/align]
[align=left]            RequestParams  params= new RequestParams();  //创建信息提交者[/align]
            params.put( "userName",
userName);
            params.put( "passWord",
passWord);
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[align=left]            client.post(path, params,new AsyncHttpResponseHandler(){[/align]
[align=left]                  [/align]
[align=left]                   @Override[/align]
                   public void onSuccess(String
content) {
[align=left]                         super.onSuccess(content);[/align]
                        Toast. makeText(context, "提交成功...",
0).show();
[align=left]                  }[/align]
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[align=left]                   @Override[/align]
                   public void onFailure(Throwable
error, String content) {
                      super.onFailure(error,
content);
                      Toast. makeText(context, "提交失败",
0).show();
[align=left]                      error.printStackTr ace();   //打印错误信息[/align]
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[align=left]            });[/align]
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