Android uploads files to the server

Upload files on the Android side

1), create a new Android project named Androidupload, the directory structure is as follows:

2), New Formfile class, used to encapsulate file information

Package Com.ljq.utils;import Java.io.file;import Java.io.fileinputstream;import java.io.FileNotFoundException;    Import java.io.inputstream;/** * Upload file */public class Formfile {/* Upload file Data */private byte[]    Private InputStream instream;    private file file;    /* File name */private String filname;    /* Request Parameter name */private String parametername;        /* Content Type */private String ContentType = "Application/octet-stream";        Public Formfile (String filname, byte[] data, String parametername, String contentType) {this.data = data;        This.filname = Filname;        This.parametername = parametername;    if (contenttype!=null) This.contenttype = ContentType; Public Formfile (String filname, File file, String parametername, String contentType) {this.filname = Filn        Ame        This.parametername = parametername;        This.file = file;        try {this.instream = new FileInputStream (file);    } catch (FileNotFoundException e) {        E.printstacktrace ();    } if (contenttype!=null) This.contenttype = ContentType;    } public file GetFile () {return file;    } public InputStream Getinstream () {return instream;    } public byte[] GetData () {return data;    } public String Getfilname () {return filname;    } public void Setfilname (String filname) {this.filname = Filname;    } public String Getparametername () {return parametername;    } public void SetParameterName (String parametername) {this.parametername = parametername;    } public String getContentType () {return contentType;    } public void setContentType (String contentType) {this.contenttype = ContentType; }    }

3), New Sockethttprequester class, package upload file to server code

Package Com.ljq.utils;import Java.io.bufferedreader;import Java.io.inputstreamreader;import java.io.OutputStream; Import Java.net.inetaddress;import java.net.socket;import java.net.url;import java.util.map;/** * Upload files to server * * @author A Dministrator * */public class Sockethttprequester {/** * directly submits data to the server via HTTP protocol, implementing the following form submission function: * <form method=p OST action= "http://192.168.1.101: 8083/upload/servlet/uploadservlet "enctype=" Multipart/form-data "> <input type=" text "name=" NAME "> <input type= "text" name= "id" > <input type= "file" name= "ImageFile"/> <input ty Pe= "file" name= "Zip"/> </FORM> * @param path upload route (note: Avoid path tests such as localhost or 127.0.0.1, as it will point to the phone simulator, you can use H     Path test such as ttp://www.iteye.cn or http://192.168.1.101:8083) * @param params request parameter key is parameter name, value is parameter value * @param file Upload files             */public static Boolean post (String path, map<string, string> params, formfile[] files) throws exception{ Final String boundary = "---------------------------7da2137580612";        Data separator Line Final String endline = "--" + Boundary + "--\r\n";//Data end flag int filedatalength = 0;             for (Formfile uploadfile:files) {//Gets the total length of the file type data StringBuilder Fileexplain = new StringBuilder ();             Fileexplain.append ("--");        Fileexplain.append (boundary);     Fileexplain.append ("\ r \ n"); Fileexplain.append ("content-disposition:form-data;name=\" "+ uploadfile.getparametername () +" \ "; filename=\" "+             Uploadfile.getfilname () + "\" \ \ "\ \ \");             Fileexplain.append ("Content-type:" + uploadfile.getcontenttype () + "\r\n\r\n");             Fileexplain.append ("\ r \ n");            Filedatalength + = Fileexplain.length ();             if (Uploadfile.getinstream ()!=null) {filedatalength + = Uploadfile.getfile (). Length ();             }else{Filedatalength + = Uploadfile.getdata (). length;        }} StringBuilder textentity = new StringBuilder ();            For (map.entry<string, string> entry:params.entrySet ()) {//Construct the Entity data of the text type parameter Textentity.append ("--");            Textentity.append (boundary);            Textentity.append ("\ r \ n"); Textentity.append ("Content-disposition:form-data;            Name=\ "" + entry.getkey () + "\" \r\n\r\n ");   Textentity.append (Entry.getvalue ());         Textentity.append ("\ r \ n"); }//Calculate the total length of entity data transferred to the server int datalength = textentity.tostring (). GetBytes (). length + filedatalength + endline.ge                Tbytes (). length;        URL url = new URL (path); int port = Url.getport () ==-1?        80:url.getport ();                   Socket socket = new Socket (Inetaddress.getbyname (Url.gethost ()), port);        OutputStream OutStream = Socket.getoutputstream ();        The following completes the sending of the HTTP request header String Requestmethod = "POST" + url.getpath () + "http/1.1\r\n";        Outstream.write (Requestmethod.getbytes ()); String accept = "Accept:image/gif, Image/jpeg, Image/pjpeg, Image/pjpeg, Application/x-shockwave-flash, application/ Xaml+xml, Application/vnd.ms-xpsdocument, APPLICATION/X-MS-XBAP, Application/x-ms-application, application/        Vnd.ms-excel, Application/vnd.ms-powerpoint, Application/msword, */*\r\n ";        Outstream.write (Accept.getbytes ());        String language = "accept-language:zh-cn\r\n"; Outstream.write (lAnguage.getbytes ()); String contenttype = "CONTENT-TYPE:MULTIPART/FORM-DATA;        boundary= "+ boundary+" \ r \ n ";        Outstream.write (Contenttype.getbytes ());        String contentlength = "Content-length:" + datalength + "\ r \ n";        Outstream.write (Contentlength.getbytes ());        String alive = "connection:keep-alive\r\n";        Outstream.write (Alive.getbytes ());        String host = "Host:" + url.gethost () + ":" + port + "\ r \ n";        Outstream.write (Host.getbytes ());        After the HTTP request header is written, write a carriage return outstream.write ("\ r \ n") according to the HTTP protocol. GetBytes ());                   Send the Entity data of all text types Outstream.write (textentity.tostring (). GetBytes ());             Send Entity data for all file types out for (Formfile uploadfile:files) {StringBuilder fileentity = new StringBuilder ();             Fileentity.append ("--");             Fileentity.append (boundary);             Fileentity.append ("\ r \ n"); Fileentity.append ("content-disposition:form-data;name=\" "+ uploadfile.getparametername() + "\"; filename=\ "" + uploadfile.getfilname () + "\" \ "\ \ \ \ \ \");             Fileentity.append ("Content-type:" + uploadfile.getcontenttype () + "\r\n\r\n");             Outstream.write (Fileentity.tostring (). GetBytes ());                 if (Uploadfile.getinstream ()!=null) {byte[] buffer = new byte[1024];                 int len = 0;                 while (len = Uploadfile.getinstream (). Read (buffer, 0, 1024x768)) (!=-1) {outstream.write (buffer, 0, Len);             } uploadfile.getinstream (). Close ();             }else{Outstream.write (Uploadfile.getdata (), 0, Uploadfile.getdata (). length);        } outstream.write ("\ r \ n". GetBytes ());                }//below sends the end of data flag indicating that the data has ended Outstream.write (Endline.getbytes ());        BufferedReader reader = new BufferedReader (New InputStreamReader (Socket.getinputstream ())); if (Reader.readline (). IndexOf ("200") ==-1) {//reads the data returned by the Web server, determines if the request code is 200, if not 200, represents the request failed reTurn false;        } outstream.flush ();        Outstream.close ();        Reader.close ();        Socket.close ();    return true; /** * Submit data to Server * @param path upload path (note: Avoid path tests such as localhost or 127.0.0.1, as it will point to the phone simulator, you can use http://www.itcast.cn or  http://192.168.1.10:8080 path Test) * @param params request parameter key is parameter name, value is parameter value * @param file Upload Document */public static Boolean post (String path, map<string, string> params, formfile file) throws exception{return post (PATH, para    MS, new Formfile[]{file}); }}

4), New Mainactivity class, to achieve every 5 seconds upload

Package Com.ljq.activity;import Java.io.file;import Java.util.hashmap;import java.util.map;import Android.app.activity;import Android.os.bundle;import Android.os.environment;import Android.os.Handler;import Android.util.log;import Com.ljq.utils.formfile;import Com.ljq.utils.sockethttprequester;public class MainActivity    Extends Activity {private file file;    Private Handler Handler;    private static final String tag= "mainactivity";        @Override public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.main);                LOG.I (TAG, "onCreate");        File = new file (Environment.getexternalstoragedirectory (), "123.rmvb");        LOG.I (TAG, "Photo file exists:" +file);        Handler=new handler ();    Handler.post (runnable);            } Runnable runnable=new Runnable () {public void run () {log.i (TAG, "Runnable run");            UploadFile (file);   Handler.postdelayed (runnable, 5000);     }        };  /** * Upload image to Server * * @param imagefile include path */public void UploadFile (File imagefile) {log.i (TAG,        "Upload start");            try {String Requesturl = "Http://192.168.1.101:8083/upload/upload/execute.do";            Request general Information map<string, string> params = new hashmap<string, string> ();            Params.put ("username", "Zhang San");            Params.put ("pwd", "Zhangsan");            Params.put ("Age", "21");            Params.put ("FileName", Imagefile.getname ());                        Upload file Formfile formfile = new Formfile (Imagefile.getname (), ImageFile, "image", "Application/octet-stream");            Sockethttprequester.post (Requesturl, params, formfile);        LOG.I (TAG, "upload success");            } catch (Exception e) {log.i (TAG, "upload error");        E.printstacktrace ();    } log.i (TAG, "Upload End"); }}

5), modify the list file

<?xml version= "1.0" encoding= "Utf-8"? ><manifest xmlns:android= "http://schemas.android.com/apk/res/ Android "      package=" com.ljq.activity "      android:versioncode=" 1 "      android:versionname=" 1.0 ">    < Application android:icon= "@drawable/icon" android:label= "@string/app_name" >        <activity android:name= ". Mainactivity "                  android:label=" @string/app_name ">            <intent-filter>                <action android:name=" Android.intent.action.MAIN "/>                <category android:name=" Android.intent.category.LAUNCHER "/>            < /intent-filter>        </activity>    </application>    <uses-sdk android:minsdkversion= "4" />    

Android uploads files to the server