Get request mode for JDK stored by remote server

I. HTTP protocol

1. Hypertext Transfer Protocol

2. Support client/server-side mode

3. Content

1-Request Agreement

1> Request Message Format

1>-Request Line: Request Resource Name protocol version number;

2>-Request message Header

3>-Request Body

2> Request method

1>-post: Request content in the request body, in the form of key = value, key value pair with & interval, the length is unrestricted, the confidentiality is high.

2>-get: The request content is used after the URL? Starting with the key = value in the form of & interval between key-value pairs, the request message has no request, the length of the request data is limited by the browser, and the request data confidentiality is low.

2-Response Protocol: Response message Format

1> Response Status line: Describes the server processing result; The response status code is 200 successful.

2> Response message Header

3> Response Body

Two. Mode

1.JDK mode

2.Android mode

3. Frame mode

Code Show: Get Request method for JDK

First set up network access rights:

<uses-permission android:name= "Android.permission.INTERNET"/>

1 <?XML version= "1.0" encoding= "Utf-8"?>2 <LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"3 Xmlns:tools= "Http://schemas.android.com/tools"4 Android:layout_width= "Match_parent"5 Android:layout_height= "Match_parent"6 Android:paddingbottom= "@dimen/activity_vertical_margin"7 Android:paddingleft= "@dimen/activity_horizontal_margin"8 Android:paddingright= "@dimen/activity_horizontal_margin"9 Android:paddingtop= "@dimen/activity_vertical_margin"Ten Tools:context= "Com.hanqi.testapp3.TestActivity3" One android:orientation= "vertical"> A  -     <Button -         Android:layout_width= "Match_parent" the Android:layout_height= "Wrap_content" - Android:text= "Jdk-get Way" - Android:onclick= "Bt1_onclick"/> -     <EditText +         Android:layout_width= "Match_parent" - Android:layout_height= "200DP" + Android:id= "@+id/et_2"/> A  at </LinearLayout>

. XML

1  Packagecom.hanqi.testapp3;2 3 ImportAndroid.app.ProgressDialog;4 Importandroid.support.v7.app.AppCompatActivity;5 ImportAndroid.os.Bundle;6 ImportAndroid.view.View;7 ImportAndroid.widget.EditText;8 ImportAndroid.widget.Toast;9 Ten ImportJava.io.InputStream; One Importjava.net.HttpURLConnection; A ImportJava.net.URL; -  -  Public classTestActivity3extendsappcompatactivity { the  - EditText et_2; -  - @Override +     protected voidonCreate (Bundle savedinstancestate) { -         Super. OnCreate (savedinstancestate); + Setcontentview (R.LAYOUT.ACTIVITY_TEST3); A  atEt_2=(EditText) Findviewbyid (r.id.et_2); -     } -  -     //get method for JDK -      Public voidBt1_onclick (View v) -     { in         //1. Progress dialog Box -         FinalProgressDialog Progressdialog=progressdialog.show ( This,NULL, "Loading, please wait ..."); to  +         //2. Turn on the sub-thread to access the network -         NewThread () { the @Override *              Public voidrun () { $ Panax Notoginseng                 Try { -  the                     //1-url +URL url =NewURL (Et_2.gettext (). toString () + "? Name=tom"); A  the                     //2-url getting the connection +HttpURLConnection huc=(HttpURLConnection) url.openconnection (); -  $                     //Request Method $Huc.setrequestmethod ("GET"); -  -                     //Set Timeout theHuc.setconnecttimeout (3000); -Huc.setreadtimeout (3000);Wuyi  the                     //Connect and send requests - Huc.connect (); Wu  -                     //Receive: About                     //determine the return status code $                     intCode=Huc.getresponsecode (); -  -                     if(code==200) -                     { A                         //Receive Data +  the                         //input stream: -InputStream is=Huc.getinputstream (); $  the                         //Read Stream the  the                         //1-byte Array the                         byte[] b=New byte[1024]; -  in                         //read to the length of the array the                         intI=0; the  About                         //3-Data the                         FinalStringBuilder sbl=NewStringBuilder (); the  the                          while((I=is.read (b)) >0) +                         { -Sbl.append (NewString (b,0, i)); the                         }Bayi  the                         //Freeing Resources the is.close (); -  - Huc.disconnect (); the  the                         //Displaying Information and closing dialog boxes via the main thread theRunonuithread (NewRunnable () { the @Override -                              Public voidrun () { the  the Et_2.settext (SBL); the 94 Progressdialog.dismiss (); the                             } the                         }); the                     }98                     Else About                     { -Toast.maketext (TestActivity3. This, "Connection error, return status code =" +code, Toast.length_short). Show ();101                     }102 103 104}Catch(Exception e) { the 106 e.printstacktrace ();107 108 Progressdialog.dismiss ();109  the                 }111             } the }.start ();113  the  the     } the}

. Java

Get request mode for JDK stored by remote server