HttpClient总结

import java.io.IOException;

import java.io.InputStream;

import java.net.URLEncoder;

import java.util.ArrayList;

import java.util.List;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.StatusLine;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.HttpClient;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import com.itheima.httpclient.utils.Utils;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.app.Activity;

import android.view.Menu;

import android.view.View;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends Activity {

Handler handler = new Handler(){

@Override

public void handleMessage(android.os.Message msg) {

Toast.makeText(MainActivity.this, (String)msg.obj, 0).show();

}

};

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void get(View v){

EditText et_name = (EditText) findViewById(R.id.et_name);

EditText et_pass = (EditText) findViewById(R.id.et_pass);

final String name = et_name.getText().toString();

final String pass = et_pass.getText().toString();

Thread t = new Thread(){

@Override

public void run() {

String path = "http://192.168.13.13/Web/servlet/CheckLogin?name=" + URLEncoder.encode(name) + "&pass=" + pass;

//使用httpClient框架做get方式提交

//1.创建HttpClient对象

HttpClient hc = new DefaultHttpClient();

//2.创建httpGet对象，构造方法的参数就是网址

HttpGet hg = new HttpGet(path);

//3.使用客户端对象，把get请求对象发送出去

try {

HttpResponse hr = hc.execute(hg);

//拿到响应头中的状态行

StatusLine sl = hr.getStatusLine();

if(sl.getStatusCode() == 200){

//拿到响应头的实体

HttpEntity he = hr.getEntity();

//拿到实体中的内容，其实就是服务器返回的输入流

InputStream is = he.getContent();

String text = Utils.getTextFromStream(is);

//发送消息，让主线程刷新ui显示text

Message msg = handler.obtainMessage();

msg.obj = text;

handler.sendMessage(msg);

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

};

t.start();

}

public void post(View v){

EditText et_name = (EditText) findViewById(R.id.et_name);

EditText et_pass = (EditText) findViewById(R.id.et_pass);

final String name = et_name.getText().toString();

final String pass = et_pass.getText().toString();

Thread t = new Thread(){

@Override

public void run() {

String path = "http://192.168.13.13/Web/servlet/CheckLogin";

//1.创建客户端对象

HttpClient hc = new DefaultHttpClient();

//2.创建post请求对象

HttpPost hp = new HttpPost(path);

//封装form表单提交的数据

BasicNameValuePair bnvp = new BasicNameValuePair("name", name);

BasicNameValuePair bnvp2 = new BasicNameValuePair("pass", pass);

List<BasicNameValuePair> parameters = new ArrayList<BasicNameValuePair>();

//把BasicNameValuePair放入集合中

parameters.add(bnvp);

parameters.add(bnvp2);

try {

//要提交的数据都已经在集合中了，把集合传给实体对象

UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters, "utf-8");

//设置post请求对象的实体，其实就是把要提交的数据封装至post请求的输出流中

hp.setEntity(entity);

//3.使用客户端发送post请求

HttpResponse hr = hc.execute(hp);

if(hr.getStatusLine().getStatusCode() == 200){

InputStream is = hr.getEntity().getContent();

String text = Utils.getTextFromStream(is);

//发送消息，让主线程刷新ui显示text

Message msg = handler.obtainMessage();

msg.obj = text;

handler.sendMessage(msg);

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

};

t.start();

}