HttpClient执行Get和Post请求

1. Get

   /**
       * 采用httpclient的方式 用get提交数据到服务器
       */
      public void loginByClientGet(View view) {
          String password = et_password.getText().toString().trim();
          String name = et_username.getText().toString().trim();
          if (TextUtils.isEmpty(name) || TextUtils.isEmpty(password)) {
              Toast.makeText(this, "用户名密码不能为空", 1).show();
              return;
          }
          // 1.打开浏览器
          HttpClient client = new DefaultHttpClient();
          // 2.输入浏览器的地址
          String uri = "http://192.168.1.100:8080/web/LoginServlet?" + "name="
                  + URLEncoder.encode(name) + "&password="
                  + URLEncoder.encode(password);
          HttpGet httpGet = new HttpGet(uri);
          // 3.敲回车.
          try {
              HttpResponse response = client.execute(httpGet);
              int code = response.getStatusLine().getStatusCode();
              if (code == 200) {
                  InputStream is = response.getEntity().getContent();
                  String result = StreamTools.readFromStream(is);
                  Toast.makeText(this, result, 1).show();
              } else {
                  Toast.makeText(this, "服务器异常", 1).show();
              }
          } catch (Exception e) {
              e.printStackTrace();
              Toast.makeText(this, "访问网络异常", 1).show();
          }
      }

2. Post

   /**
    * 采用httpclient post数据到服务器
    */
   public void loginByClientPost(View view) {
       String password = et_password.getText().toString().trim();
       String name = et_username.getText().toString().trim();
       if (TextUtils.isEmpty(name) || TextUtils.isEmpty(password)) {
           Toast.makeText(this, "用户名密码不能为空", 1).show();
           return;
       }
       try {
           // 1.创建一个浏览器
           HttpClient client = new DefaultHttpClient();
           // 2.准备一个连接
           HttpPost post = new HttpPost(
                   "http://192.168.1.100:8080/web/LoginServlet");
           // 要向服务器提交的数据实体
           List<NameValuePair> parameters = new ArrayList<NameValuePair>();
           parameters.add(new BasicNameValuePair("name", name));
           parameters.add(new BasicNameValuePair("password", password));
           UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters,
                   "utf-8");
           post.setEntity(entity);
           // 3.敲回车
           HttpResponse response = client.execute(post);
           int code = response.getStatusLine().getStatusCode();
           if (code == 200) {
               InputStream is = response.getEntity().getContent();
               String result = StreamTools.readFromStream(is);
               Toast.makeText(this, result, 1).show();
           } else {
               Toast.makeText(this, "服务器异常", 1).show();
           }
       } catch (Exception e) {
           e.printStackTrace();
           Toast.makeText(this, "client post 失败", 1).show();
       }
   }

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