HttpURLConnection和okHttp两种获取网络数据的实现方法

概述废话少说，直接上代码。简单易懂。xml如下：<?xmlversion=\"1.0\"encoding=\"utf-8\"?>

废话少说，直接上代码。简单易懂。

xml如下：

<?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请求"  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请求"  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如下：

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(); }}

注意：需要在加权限

1.<uses-permission androID:name="androID.permission.INTERNET"/>

2.okhttp3需要在gradle添加依赖

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'//依赖 testCompile 'junit:junit:4.12'}

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