package com.example.httpdemo2;

 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.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView; public class HttpDemo2Activity extends Activity
{
private String TAG = "http";
private EditText mNameText = null;
private EditText mAgeText = null; private Button getButton = null;
private Button postButton = null; private TextView mResult = null; // 基本地址:服务器ip地址:端口号/Web项目逻辑地址+目标页面(Servlet)的url-pattern
private String baseURL = "http://192.168.11.6:8080/HelloWeb/servlet/WelcomeUserServlet"; @Override
protected void onCreate(Bundle savedInstanceState)
{
Log.i(TAG, "onCreate");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_http_demo2); mNameText = (EditText) findViewById(R.id.name);
mAgeText = (EditText) findViewById(R.id.age);
mResult = (TextView) findViewById(R.id.result); getButton = (Button) findViewById(R.id.submit_get);
getButton.setOnClickListener(mGetClickListener);
postButton = (Button) findViewById(R.id.submit_post);
postButton.setOnClickListener(mPostClickListener);
} private OnClickListener mGetClickListener = new View.OnClickListener()
{ @Override
public void onClick(View v)
{
Log.i(TAG, "GET request");
// 先获取用户名和年龄
String name = mNameText.getText().toString();
String age = mAgeText.getText().toString(); // 使用GET方法发送请求,需要把参数加在URL后面,用?连接,参数之间用&分隔
String url = baseURL + "?username=" + name + "&age=" + age; // 生成请求对象
HttpGet httpGet = new HttpGet(url);
HttpClient httpClient = new DefaultHttpClient(); // 发送请求
try
{ HttpResponse response = httpClient.execute(httpGet); // 显示响应
showResponseResult(response);// 一个私有方法,将响应结果显示出来 }
catch (Exception e)
{
e.printStackTrace();
} }
}; private OnClickListener mPostClickListener = new View.OnClickListener()
{ @Override
public void onClick(View v)
{
Log.i(TAG, "POST request");
// 先获取用户名和年龄
String name = mNameText.getText().toString();
String age = mAgeText.getText().toString(); NameValuePair pair1 = new BasicNameValuePair("username", name);
NameValuePair pair2 = new BasicNameValuePair("age", age); List<NameValuePair> pairList = new ArrayList<NameValuePair>();
pairList.add(pair1);
pairList.add(pair2); try
{
HttpEntity requestHttpEntity = new UrlEncodedFormEntity(
pairList);
// URL使用基本URL即可,其中不需要加参数
HttpPost httpPost = new HttpPost(baseURL);
// 将请求体内容加入请求中
httpPost.setEntity(requestHttpEntity);
// 需要客户端对象来发送请求
HttpClient httpClient = new DefaultHttpClient();
// 发送请求
HttpResponse response = httpClient.execute(httpPost);
// 显示响应
showResponseResult(response);
}
catch (Exception e)
{
e.printStackTrace();
} }
}; /**
* 显示响应结果到命令行和TextView
* @param response
*/
private void showResponseResult(HttpResponse response)
{
if (null == response)
{
return;
} HttpEntity httpEntity = response.getEntity();
try
{
InputStream inputStream = httpEntity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(
inputStream));
String result = "";
String line = "";
while (null != (line = reader.readLine()))
{
result += line; } System.out.println(result);
mResult.setText("Response Content from server: " + result);
}
catch (Exception e)
{
e.printStackTrace();
} } }

布局文件:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" > <TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Username:" /> <EditText
android:id="@+id/name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="text" /> <TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="User Age:" /> <EditText
android:id="@+id/age"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="number" /> <Button
android:id="@+id/submit_get"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Submit using GET" /> <Button
android:id="@+id/submit_post"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Submit using POST" /> <TextView
android:id="@+id/result"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="#0000FF"
android:textSize="14sp" >
</TextView> </LinearLayout>

须在androidMenifest中配置联网权限;

05-08 08:24