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package
com.example.http;
import
java.io.BufferedReader;
import
java.io.InputStream;
import
java.io.InputStreamReader;
import
java.net.HttpURLConnection;
import
java.net.URL;
import
org.apache.http.HttpEntity;
import
org.apache.http.HttpResponse;
import
org.apache.http.client.HttpClient;
import
org.apache.http.client.methods.HttpGet;
import
org.apache.http.impl.client.DefaultHttpClient;
import
org.apache.http.util.EntityUtils;
import
android.os.Bundle;
import
android.os.Handler;
import
android.os.Message;
import
android.view.View;
import
android.view.View.OnClickListener;
import
android.widget.Button;
import
android.widget.TextView;
import
android.annotation.SuppressLint;
import
android.app.Activity;
@SuppressLint
(
"HandlerLeak"
)
public
class
MainActivity
extends
Activity {
private
static
final
int
SHOW_RESPONSE =
0
;
private
TextView textView;
private
Button button;
private
Handler handler =
new
Handler() {
public
void
handleMessage(Message msg) {
switch
(msg.what) {
case
SHOW_RESPONSE:
String response = (String) msg.obj;
textView.setText(response);
break
;
}
}
};
@Override
protected
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView) findViewById(R.id.webview);
button = (Button) findViewById(R.id.button);
button.setOnClickListener(
new
OnClickListener() {
@Override
public
void
onClick(View v) {
// sendRequestWithHttpConnection();
sendRequestWithHttpClient();
}
});
}
/**
* httpclient网络访问
*/
protected
void
sendRequestWithHttpClient() {
new
Thread(
new
Runnable() {
@Override
public
void
run() {
try
{
HttpClient httpClient =
new
DefaultHttpClient();
HttpGet httpGet =
new
HttpGet(
"http://www.baidu.com"
);
HttpResponse httpResponse = httpClient.execute(httpGet);
if
(httpResponse.getStatusLine().getStatusCode() ==
200
) {
// 请求成功
HttpEntity entity = httpResponse.getEntity();
String response = EntityUtils.toString(entity,
"utf-8"
);
Message message =
new
Message();
message.what = SHOW_RESPONSE;
message.obj = response.toString();
handler.sendMessage(message);
}
}
catch
(Exception e) {
e.printStackTrace();
}
finally
{
}
}
}).start();
}
/**
* httpURLConnection网络访问
*/
protected
void
sendRequestWithHttpConnection() {
new
Thread(
new
Runnable() {
@Override
public
void
run() {
HttpURLConnection connection =
null
;
try
{
URL url =
new
URL(
"http://www.baidu.com"
);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod(
"GET"
);
connection.setConnectTimeout(
8000
);
connection.setReadTimeout(
8000
);
connection.setDoInput(
true
);
connection.setDoOutput(
true
);
InputStream inputStream = connection.getInputStream();
BufferedReader reader =
new
BufferedReader(
new
InputStreamReader(inputStream));
StringBuffer response =
new
StringBuffer();
String line;
while
((line = reader.readLine()) !=
null
) {
response.append(line);
}
Message message =
new
Message();
message.what = SHOW_RESPONSE;
message.obj = response.toString();
handler.sendMessage(message);
}
catch
(Exception e) {
e.printStackTrace();
}
finally
{
if
(connection !=
null
) {
connection.disconnect();
}
}
}
}).start();
}
}
布局：
<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"
>
<Button
android:id=
"@+id/button"
android:layout_width=
"match_parent"
android:layout_height=
"wrap_content"
android:text=
"send request"
/>
<ScrollView
android:layout_width=
"match_parent"
android:layout_height=
"wrap_content"
>
<TextView
android:id=
"@+id/webview"
android:layout_width=
"match_parent"
android:layout_height=
"wrap_content"
/>
</ScrollView>
</LinearLayout>
|