使用Aynchttpclient向服务器端提交数据

这个开源库在github可以下载到

GET提交数据

package com.itheima.qqlogin;


import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;


import org.apache.http.Header;


import com.itheima.htmlview.utils.StreamTools;
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;






import android.app.Activity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;


public class MainActivity extends Activity {


	private EditText et_name;


	private EditText et_name;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		et_qq = (EditText) findViewById(R.id.et_qq);


		et_pwd = (EditText) findViewById(R.id.et_pwd);
	
	}


	public void login(View view){
		final String name = et_qq.getText().toString().trim();
		
		final String pwd = et_pwd.getText().toString().trim();
		
		if(TextUtils.isEmpty(name) || TextUtils.isEmpty(pwd)){
			Toast.makeText(this, "qq和密码不能空", 0).show();
			return;
		}else{
			
					
					try {
						String path = "http://192.168.22.136:8080/web/servlet/LoginServlet?username="+URLEncoder.encode(name,"UTF-8")+"&password="+URLEncoder.encode(pwd,"UTF-8");
                        //1、创建一个浏览器： 
						AsyncHttpClient client = new AsyncHttpClient();
//						1、输入网址，调用get方式向服务器发送请求：
                          client.get(path, new AsyncHttpResponseHandler() {
							
                        	  /*
                        	   * 请求成功，服务器端正常响应 响应码200
                        	   * statusCode 响应码200ok，404没有找到资源，503服务器内部错误, Header[] headers 响应头信息, byte[] responseBody 服务器返回的数据
                        	   */
							@Override
							public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
								Toast.makeText(MainActivity.this, new String(responseBody), 0).show();
							}
							
							  /*
                      	   * 请求成功，服务器端正常响应 响应码200
                      	   * int statusCode, Header[] headers, byte[] responseBody, Throwable error
                      	   * statusCode 响应码200ok，404没有找到资源，503服务器内部错误, Header[] headers 响应头信息, byte[] responseBody 服务器返回的数据
                      	   * Throwable error 服务器端返回的异常
                      	   */
							@Override
							public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable arg3) {
								Toast.makeText(MainActivity.this, new String(responseBody), 0).show();
							}
						});
					} catch (Exception e) {
						e.printStackTrace();
					}
				};
			
		}
	}

POST方式提交数据

package com.itheima.qqlogin;


import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;


import org.apache.http.Header;


import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.TextUtils;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;


import com.itheima.htmlview.utils.StreamTools;
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;


public class MainActivity extends Activity {


	private EditText et_qq;


	private EditText et_pwd;
	
	private Handler handler = new Handler(){
		public void handleMessage(android.os.Message msg) {
			
			String result = (String) msg.obj;
			
			Toast.makeText(MainActivity.this, result, 0).show();
		};
	};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		et_qq = (EditText) findViewById(R.id.et_qq);


		et_pwd = (EditText) findViewById(R.id.et_pwd);
	
	}


	public void login(View view){
		final String name = et_qq.getText().toString().trim();
		
		final String pwd = et_pwd.getText().toString().trim();
		
		if(TextUtils.isEmpty(name) || TextUtils.isEmpty(pwd)){
			Toast.makeText(this, "qq和密码不能空", 0).show();
			return;
		}else{
			try {
				String path = "http://192.168.22.136:8080/web/servlet/LoginServlet";
//			String data = "username="+name+"&password="+pwd;
				
//				String data = "username="+URLEncoder.encode(name,"UTF-8")+"&password="+URLEncoder.encode(pwd,"UTF-8");
//				1、创建一个浏览器：
				AsyncHttpClient client = new AsyncHttpClient();
			
				
//				 2、输入一个网址,敲回车：
				RequestParams params = new RequestParams();
				params.put("username", name);
				params.put("password", pwd);
				
				client.post(path, params, new AsyncHttpResponseHandler() {
					
					@Override
					public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
						Toast.makeText(MainActivity.this, new String(responseBody), 0).show();
						
					}
					
					@Override
					public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable e) {
						Toast.makeText(MainActivity.this, new String("服务器端返回数据失败"), 0).show();
					}
				});
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}
     
}