1 建立Http连接的步骤：

1.1 获得一个http的连接地址(如：String httpurl = "http://192.168.0.68:8090/Test/index.jsp?par=this-is-get-Method-request!";)

1.2 构造一个URL对象(如：url =newURL(httpurl);)

1.3 使用HttpURLConnection打开一个连接(如：HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();)

1.4 得到读取的内容(流)(如：InputStream inputStream = httpConnection.getInputStream();)

2 TestHttpGetPostActivity：

import java.io.BufferedReader;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import .HttpURLConnection;

import .MalformedURLException;

import .URL;

import .URLEncoder;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.TextView;

public class TestHttpGetPostActivity extends Activity

{

private Button mButton01;

private Button mButton02;

private Button mButton03;

private String data = null;

private TextView mTextView;

private Intent intent = new Intent();

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

mButton01 = (Button) findViewById(R.id.get);

mButton02 = (Button) findViewById(R.id.post);

mButton03 = (Button) findViewById(R.id.nothing);

mTextView = (TextView) findViewById(R.id.textview);

mButton01.setOnClickListener(listener);

mButton02.setOnClickListener(listener);

mButton03.setOnClickListener(listener);

}

private OnClickListener listener = new OnClickListener()

{

@Override

public void onClick(View v)

{

switch (v.getId())

{

// get请求

case R.id.get:

try

{

String httpurl = "http://192.168.0.68:8090/Test/index.jsp?par=this-is-get-Method-request!";

URL url;

url = new URL(httpurl);

if (url != null)

{

// 使用HttpURLConnection打开网络连接

HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();

InputStream inputStream = httpConnection.getInputStream();

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));

while (bufferedReader.readLine() != null)

{

data += bufferedReader.readLine() + "\n";

}

// 关闭inputStream

inputStream.close();

// 关闭http连接

httpConnection.disconnect();

System.out.println("data = " + data);

if (data != null)

{

intent.putExtra("data", data);

intent.setClass(TestHttpGetPostActivity.this, ShowHtmlContent.class);

startActivity(intent);

}

else

{

mTextView.setText("data is NULL!");

}

}

}

catch (MalformedURLException e)

{

e.printStackTrace();

}

catch (IOException e)

{

mTextView.setText("url is NULL!");

e.printStackTrace();

}

break;

// post请求

case R.id.post:

try

{

String httpurl = "http://192.168.0.68:8090/Test/index.jsp";

URL url;

url = new URL(httpurl);

if (url != null)

{

// 使用HttpURLConnection打开网络连接

HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();

// 因为是post请求，需要设置成true

httpConnection.setDoInput(true);

httpConnection.setDoOutput(true);

// 设置post请求方式

httpConnection.setRequestMethod("POST");

// post请求不能使用缓存

httpConnection.setUseCaches(false);

httpConnection.setInstanceFollowRedirects(true);

// 配置本次连接的Content-type，配置为application/x-www-form-urlencoded

httpConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

// 连接，从postUrl.openConnection()至此的配置必须要在connect之前完成

// 要注意的是connection.getOutputSream会隐含地进行connect.urlConn.connect();

// DataOutputSream流

DataOutputStream outputStream = new DataOutputStream(httpConnection.getOutputStream());

// 要上传的参数

String content = "par=" + URLEncoder.encode("this is post request!", "gb2312");

// 将要上传的内容写入流中

outputStream.writeBytes(content);

// 刷新，关闭

outputStream.flush();

outputStream.close();

InputStream inputStream = httpConnection.getInputStream();

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));

while (bufferedReader.readLine() != null)

{

data += bufferedReader.readLine() + "\n";

}

// 关闭inputStream

inputStream.close();

// 关闭http连接

httpConnection.disconnect();

System.out.println("data = " + data);

if (data != null)

{

intent.putExtra("data", data);

intent.setClass(TestHttpGetPostActivity.this, ShowHtmlContent.class);

startActivity(intent);

}

else

{

mTextView.setText("data is NULL!");

}

}

}

catch (MalformedURLException e)

{

e.printStackTrace();

}

catch (IOException e)

{

mTextView.setText("url is NULL!");

e.printStackTrace();

}

break;

case R.id.nothing:

try

{

String httpurl = "http://192.168.0.68:8090/Test/index.jsp";

URL url;

url = new URL(httpurl);

if (url != null)

{

// 使用HttpURLConnection打开网络连接

HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();

InputStream inputStream = httpConnection.getInputStream();

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));

while (bufferedReader.readLine() != null)

{

data += bufferedReader.readLine() + "\n";

}

// 关闭inputStream

inputStream.close();

// 关闭http连接

httpConnection.disconnect();

System.out.println("data = " + data);

if (data != null)

{

intent.putExtra("data", data);

intent.setClass(TestHttpGetPostActivity.this, ShowHtmlContent.class);

startActivity(intent);

}

else

{

mTextView.setText("data is NULL!");

}

}

}

catch (MalformedURLException e)

{

e.printStackTrace();

}

catch (IOException e)

{

mTextView.setText("url is NULL!");

e.printStackTrace();

}

break;

}

}

};

}

3 ShowHtmlContent：

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.widget.TextView;

public class ShowHtmlContent extends Activity

{

private TextView mTextView;

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.http);

mTextView = (TextView) findViewById(R.id.textview);

Intent intent = ShowHtmlContent.this.getIntent();

String dataString = intent.getStringExtra("data");

if (dataString != null)

{

mTextView.setText(dataString);

}

else

{

mTextView.setText("nothing to show!");

}

}

}

4 效果图