HttpURLConnection and okHttp Implementation Methods for Obtaining Network Data
- 2021-08-17 00:59:28
- OfStack
Cut the crap and go straight to the code. Easy to understand.
xml is as follows:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_net"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.waterlamp.NetActivity">
<Button
android:id="@+id/okhttp"
android:text="okhttp Request "
android:layout_width="150dp"
android:layout_height="37dp"
android:layout_alignBottom="@+id/http"
android:layout_alignParentEnd="true"
android:layout_alignParentTop="true" />
<Button
android:id="@+id/http"
android:text="HTTP Request "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_below="@+id/okhttp"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true" >
<TextView
android:id="@+id/stringData"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</ScrollView>
</RelativeLayout>
activity is as follows:
public class NetActivity extends AppCompatActivity implements View.OnClickListener{
private Button http,okhttp;
private TextView stringData;
private String web="https://www.baidu.com";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_net);
http= (Button) findViewById(R.id.http);
okhttp= (Button) findViewById(R.id.okhttp);
stringData= (TextView) findViewById(R.id.stringData);
http.setOnClickListener(this);
okhttp.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.http:
sendRequestWithHttpURLConnection();
break;
case R.id.okhttp:
sendRequestWithokHttp();
break;
}
}
private void sendRequestWithHttpURLConnection(){
new Thread(new Runnable() {
@Override
public void run() {
HttpURLConnection connection=null;
BufferedReader reader=null;
try {
URL url=new URL(web);
connection= (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
InputStream in=connection.getInputStream();
reader=new BufferedReader(new InputStreamReader(in));
StringBuffer response=new StringBuffer();
String line;
while ((line=reader.readLine())!=null){
response.append(line);
}
showRespond(response.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally {
if (reader!=null){
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}).start();
}
private void showRespond(final String response) {
runOnUiThread(new Runnable() {
@Override
public void run() {
stringData.setText(response);
}
});
}
private void sendRequestWithokHttp(){
new Thread(new Runnable() {
@Override
public void run() {
try {
OkHttpClient client=new OkHttpClient();
Request request=new Request.Builder()
.url(web).build();
Response response=client.newCall(request).execute();
String str=response.body().string();
showRespond(str);
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
}
}
Note: You need to add permissions
1. < uses-permission android:name="android.permission.INTERNET"/ >
2. okhttp3 needs to add dependencies to gradle
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:24.2.1'
compile 'com.android.support:design:24.2.1'
compile 'com.squareup.okhttp3:okhttp:3.4.1'// Dependency
testCompile 'junit:junit:4.12'
}