Android 以Http協議 使用get和post方式請求站點

此文就是作爲筆記使用，以防忘記，下面是全部代碼：

此文請求的是web程序的一個servlet 定義了一個post和get方法 ，get方法傳入的name和age，post傳入的參數是name1和age1 。

你可以自己建一個簡單的站點用於測試：

下面是我的servlet 主要代碼：

        public void doGet(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException 
	{
		response.setContentType("text/html;charset=gbk");
		
		String name=request.getParameter("name").toString();
		String age=request.getParameter("age").toString();
		
		PrintWriter out = response.getWriter();
		out.print("你使用Get發送請求，你的名字是："+name+",你的年齡是："+age);
	}

	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException 
	{
		response.setContentType("text/html;charset=gbk");
		
		String name=request.getParameter("name1").toString();
		String age=request.getParameter("age1").toString();
		
		PrintWriter out = response.getWriter();
		out.print("你使用Post發送請求，你的名字是："+name+",你的年齡是："+age);
	}

android main代碼：

package ytbk.soft.activity;

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.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.os.StrictMode;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Path.FillType;
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 name=null;
	private EditText age=null;
	
	private String baseUrl="http://192.168.10.86:8080/service/indexService";
	
	private HttpResponse response = null;
	private HttpEntity entity = null;
	@SuppressLint("NewApi")
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.mainactivity);
		//以下是android 4 版本以後，無法在主線程訪問網絡解決方法   如果你還是2系列的版本講此代碼去掉
		StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
		.detectDiskReads()
		.detectDiskWrites()
		.detectNetwork() // 這裏可以替換爲detectAll() 就包括了磁盤讀寫和網絡I/O
		.penaltyLog() //打印logcat，當然也可以定位到dropbox，通過文件保存相應的log
		.build());
		StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
		.detectLeakedSqlLiteObjects() //探測SQLite數據庫操作
		.penaltyLog() //打印logcat
		.penaltyDeath()
		.build()); 
		
		getButton=(Button)this.findViewById(R.id.getButton);
		postButton=(Button)this.findViewById(R.id.postButton);
		name=(EditText)this.findViewById(R.id.name);
		age=(EditText)this.findViewById(R.id.age);
		
		getButton.setOnClickListener(new OnClickListener() 
		{
			@Override
			public void onClick(View v) 
			{
				String sname=name.getText().toString();
				String sage=age.getText().toString();
				String Url=baseUrl+"?name="+sname+"&age="+sage;
				
				HttpGet httpget=new HttpGet(Url);
				HttpClient client=new DefaultHttpClient();
				InputStream stream=null;
				try {
					response=client.execute(httpget);
					entity=response.getEntity();
					stream=entity.getContent();
					
					BufferedReader reder=new BufferedReader(new InputStreamReader(stream));
					
					String result="";
					String line="";
					while((line=reder.readLine())!=null)
					{
						result=result+line;
					}
					System.out.println(result);
				} catch (Exception e) {
					System.out.println(e.getMessage()+"```````````````````````````````"+e.toString());
				}finally{
					try {
						stream.close();
					} catch (Exception e2) {
						e2.printStackTrace();
					}
				}
			}
		});
		
		
		postButton.setOnClickListener(new OnClickListener() 
		{
			@Override
			public void onClick(View v) 
			{
				String sname=name.getText().toString();
				String sage=age.getText().toString();
				NameValuePair namevalue=new BasicNameValuePair("name1",sname);
				NameValuePair agevalue=new BasicNameValuePair("age1",sage);
				List<NameValuePair> list=new ArrayList<NameValuePair>();
				list.add(namevalue);
				list.add(agevalue);
				
				
				InputStream stream=null;
				try {
					HttpEntity entity=new UrlEncodedFormEntity(list);
					HttpPost post=new HttpPost(baseUrl);
					post.setEntity(entity);
					HttpClient client=new DefaultHttpClient();
					
					try {
						response=client.execute(post);
                                                //一定要注意此處，重新獲取響應數據，否則你獲取到的是你的url參數請求信息
						entity=response.getEntity();
						stream=entity.getContent();
						
						BufferedReader reder=new BufferedReader(new InputStreamReader(stream));
						
						String result="";
						String line="";
						while((line=reder.readLine())!=null)
						{
							result=result+line;
						}
						System.out.println(result);
					} catch (Exception e) {
						System.out.println(e.getMessage()+"```````````````````````````````"+e.toString());
					}finally{
						try {
							stream.close();
						} catch (Exception e2) {
							e2.printStackTrace();
						}
					}
					
				} catch (Exception e) {
					e.printStackTrace();
				}finally{
					try {
						stream.close();
					} catch (Exception e2) {
						e2.printStackTrace();
					}
				}
			}
		});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}