09_HTTP操作（三） (HTTP请求方法：1、GET方法发送请求，2POS方法发送请求)

09_HTTP操作（三） (HTTP请求方法：1、GET方法发送请求，2POS方法发送请求)

package com.lwb.my04_09_http03;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
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.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 android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {
    private Button getButton = null;
    private Button postButton = null;
    private EditText nameView = null;
    private EditText ageView = null;
    private String baseUrl ="";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        nameView = (EditText)findViewById(R.id.nameView);
        ageView = (EditText) findViewById(R.id.ageView);
        getButton = (Button)findViewById(R.id.getButton);
        postButton = (Button)findViewById(R.id.postButton);

        /*POST连接方法
         * 1、创建NameValuePair对象，即创建BasicNameValuePair("name",name);类似键值对
         * 2、创建NameValuepair的链表List： nameValuepairs = new ArrrayLisst();
         *         并把要携带的内容全部添加进去：nameValuePairs.add(nameValuePairName);
         * 3、创建一个带url的HttpPost对象（类似创建一个带url的HttpGet对象）
         * 4、为HttpPost对象设置实体（即要发送的内容）：httpPost.setEntity(requestHttpEntity);
         * 以下的内容和Get的方法一样
         * 2、创建一个客户端发送请求HttpClient对象,即DefaultHttpClient()
         * 3、客户端HttpClient执行execute(httpGet)方法，将返回一个服务器的响应httpresponse
         * 4、从服务器返回的响应中得到httpEntity实体：httpEntity = httpResponse.getEntity();
         * 5、从实体中得到内容inputStream = httpEntity.getContent();
         * inputSteamReader ->inputStreamReader->BufferedReader -> Str = BufferedReader.readLine()
         * */
        postButton.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View v) {
                String name = nameView.getText().toString();
                String age = ageView.getText().toString();
                NameValuePair nameValuePairName = new BasicNameValuePair("name",name);
                NameValuePair nameValuePairAge = new BasicNameValuePair("age",age);

                List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                nameValuePairs.add(nameValuePairName);
                nameValuePairs.add(nameValuePairAge);

                try {
                    HttpEntity requestHttpEntity = new UrlEncodedFormEntity(nameValuePairs);
                    String url = "";
                    //HttpPost httpPost = new HttpPost(baseUrl);
                    HttpPost httpPost = new HttpPost(url);
                    //httpPost.setEntity(requestHttpEntity);
                    HttpClient httpClient = new DefaultHttpClient();

                    InputStream inputStream = null;
                    HttpResponse httpResponse = null;
                    HttpEntity httpEntity = null;
                    try {
                        //在客户端HttpClient的execute(httpGet)填入httpGet对象发送请求，
                        //将得到服务器的响应并返回httpResponse
                        httpResponse = httpClient.execute(httpPost);
                        //在服务器返回的响应中获得内容实体HttpEntity
                        httpEntity = httpResponse.getEntity();
                        //在内容实体中得到内容放入输入流
                        inputStream = httpEntity.getContent();
                        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
                        String result = "";
                        String line = "";
                        while((line = reader.readLine()) != null){
                            result = result + line;
                            System.out.println(line);
                        }
                        System.out.println(result);

                    } catch (ClientProtocolException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                }
            }});


        /* Get连接方法
         * 1、创建一个带url的HttpGet对象
         * 2、创建一个客户端发送请求HttpClient对象,即DefaultHttpClient()
         * 3、客户端HttpClient执行execute(httpGet)方法，将返回一个服务器的响应httpresponse
         * 4、从服务器返回的响应中得到httpEntity实体：httpEntity = httpResponse.getEntity();
         * 5、从实体中得到内容inputStream = httpEntity.getContent();
         * inputSteamReader ->inputStreamReader->BufferedReader -> Str = BufferedReader.readLine()
         * */
        getButton.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View arg0) {
                String name = nameView.getText().toString();
                String age = ageView.getText().toString();
            //    String url = baseUrl + "?" + "name=" + name + "&age=" + age;
                System.out.println("11111111111111111");
                String url = "";
                //生成一个HttpGet请求对象
                HttpGet httpGet = new HttpGet(url);
                //生成一个HttpClient客户端发送请求对象 即DefaultHttpClient对象
                HttpClient httpClient = new DefaultHttpClient();
                InputStream inputStream = null;
                HttpResponse httpResponse = null;
                HttpEntity httpEntity = null;
                try {
                    //在客户端HttpClient的execute(httpGet)填入httpGet对象发送请求，
                    //将得到服务器的响应并返回httpResponse
                    httpResponse = httpClient.execute(httpGet);
                    //在服务器返回的响应中获得内容实体HttpEntity
                    httpEntity = httpResponse.getEntity();
                    //在内容实体中得到内容放入输入流
                    inputStream = httpEntity.getContent();
                    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
                    String result = "";
                    String line = "";
                    while((line = reader.readLine()) != null){
                        result = result + line;
                        System.out.println(line);
                    }
                    System.out.println(result);

                } catch (ClientProtocolException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });
    }
}

注意：一定要在AndroidMainfest.xml添加访问互联网的权限：
   android:name="android.permission.INTERNET"/>