HttpClient详解

/**
    * 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();
       }
   }

/**
 * 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();
    }
}