The image is stored in a blob in the background database, and the Android client reads the display

Workaround:

1: Read the picture from the database in the background in a inputstream way:

 Public StaticInputStream Getpicinputstream () {String ID= "F304733361E243779B2340AFE20E62BF"; Connection Conn=jdbcutil.getconnection (); PreparedStatement PS=NULL; ResultSet RS=NULL; InputStream is=NULL; String SQL= "Select ZP from Pic_test where id=?"; Try{PS=conn.preparestatement (SQL); Ps.setstring (1, id); RS=Ps.executequery (); if(Rs.next ()) { is= Rs.getblob ("ZP"). Getbinarystream (); }                    } Catch(SQLException ex) {Logger.getlogger (Test.class. GetName ()). log (Level.severe,NULL, ex); }finally{            Try {                if(NULL!=PS)                {Ps.close (); }            } Catch(SQLException ex) {Logger.getlogger (Test.class. GetName ()). log (Level.severe,NULL, ex); }            Try {                if(NULL!=RS)                {Rs.close (); }            } Catch(SQLException ex) {Logger.getlogger (Test.class. GetName ()). log (Level.severe,NULL, ex);        } jdbcutil.release (conn); }                         returnis ; }

2: Create a picture directly in the servlet:

Response.setcontenttype ("Image/jpeg"); InputStream is=Test.getpicinputstream (); if(NULL!=is ) {outputstream OS=Response.getoutputstream (); intLen; byteBuf[] =New byte[1024];  while((Len=is.read (BUF))!=-1) {os.write (buf,0, Len);            } is.close ();        Os.close (); }

Processing of 3:android Clients

 Public classMainactivityextendsActivity {ImageView imgview; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);                Setcontentview (R.layout.activity_main); Imgview=(ImageView) Findviewbyid (R.id.imgview); NewImgviewasynctask (). Execute (""); }    classImgviewasynctaskextendsAsynctask<string,string,string>{Bitmap Bitmap=NULL; @Overrideprotected voidOnPreExecute () {} @Overrideprotectedstring Doinbackground (String ... strings) {InputStream is=NULL; String result= ""; Try{URL Picurl=NewURL ("Http://192.168.0.165:8084/wisdompm/PicServlet"); HttpURLConnection Conn=(HttpURLConnection) picurl.openconnection (); Conn.setconnecttimeout (10000);                Conn.connect (); is=Conn.getinputstream (); if(NULL!=is ) {Bitmap=Bitmapfactory.decodestream (IS); }            } Catch(malformedurlexception e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); }finally {                Try {                    if(NULL!=is )                    {Is.close (); }                } Catch(IOException e) {e.printstacktrace (); }            }            returnresult; } @Overrideprotected voidOnPostExecute (String s) {if(NULL!=bitmap &&NULL!=Imgview)            {Imgview.setimagebitmap (bitmap); }        }    }}

Test results:

The image is stored in a blob in the background database, and the Android client reads the display