Android uploads the mobile phone image to the server and saves it on the server.

Server servlet code publicvoid dopost (httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {string temp = request. getsession (). getservletcontext (). getrealpath ("/") + "Temp"; // temporary directory system. out. println ("temp =" + temp); string loadpath = request. getsession (). getservletcontext (). getrealpath ("/") + "image"; // upload the file storage directory system. out. println ("loadpath =" + loadpath); diskfileupload Fu = New diskfileupload (); Fu. setsizemax (1*1024*1024); // set the size of the file to be uploaded. Unit: byte Fu. setsizethreshold (4096); // you can specify a maximum of data that can be stored in the memory. The unit is byte Fu. setrepositorypath (temp); // if the file size exceeds the value of getsizethreshold (), the data is stored in the directory of the hard disk. // The Int Index = 0; List fileitems = NULL; try {fileitems = Fu. parserequest (request); system. out. println ("fileitems =" + fileitems);} catch (exception e) {e. printstacktrace ();} iterator iter = fileit EMS. iterator (); // process each uploaded file in sequence while (ITER. hasnext () {fileitem item = (fileitem) ITER. next (); // ignore all other form information not in the file field if (! Item. isformfield () {string name = item. getname (); // get the upload file name, including path name = Name. substring (name. lastindexof ("\") + 1); // extract the file name from the full path long size = item. getsize (); If (name = NULL | Name. equals ("") & size = 0) continue; int point = Name. indexof (". "); name = (new date ()). gettime () + name. substring (point, name. length () + index; index ++; file fnew = new file (loadpath, name); try {item. write (fnew);} catch (exception e ){ // Todo auto-generated Catch Block E. printstacktrace () ;}} else // retrieve all form information not in the file field {string fieldvalue = item. getstring (); // if it contains Chinese characters, it should be written to :( convert to UTF-8 encoding) // string fieldvalue = new string (item. getstring (). getbytes (), "UTF-8") ;}} string text1 = "11"; response. sendredirect ("result. JSP? Text1 = "+ text1);} publicclass photoupload extends activity {private string newname =" image.jpg "; private string uploadfile ="/sdcard/image. jpg "; private string actionurl =" http: // 192.168.0.71: 8086/helloword/myform "; private textview mtext1; private textview mtext2; private button mbutton; @ override publicvoid oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. photo_upload); mtext1 = (textview) findviewbyid (R. id. mytext2); // "file path: \ n" + mtext1.settext (uploadfile); mtext2 = (textview) findviewbyid (R. id. mytext3); // "Upload URL: \ n" + mtext2.settext (actionurl);/* set the onclick event processing of mbutton */mbutton = (button) findviewbyid (R. id. mybutton); mbutton. setonclicklistener (new view. onclicklistener () {publicvoid onclick (view v) {uploadfile () ;}}) ;}/ * upload the file to the server Method */privatevoid uploadfile () {string end = "\ r \ n"; string twohyphens = "--"; string boundary = "*****"; try {URL url = new URL (actionurl); httpurlconnection con = (httpurlconnection) URL. openconnection ();/* allow input and output without using cache */con. setdoinput (true); con. setdooutput (true); con. setusecaches (false);/* set the transfer method = post */con. setrequestmethod ("Post");/* setrequestproperty */con. setrequestpropert Y ("connection", "keep-alive"); con. setrequestproperty ("charset", "UTF-8"); con. setrequestproperty ("Content-Type", "multipart/form-data; boundary =" + boundary);/* Set dataoutputstream */dataoutputstream DS = new dataoutputstream (con. getoutputstream (); DS. writebytes (twohyphens + boundary + end); DS. writebytes ("content-Disposition: Form-data;" + "name = \" file1 \ "; filename = \" "+ newname +" \ "" + end); DS. WRI Tebytes (end);/* Get the fileinputstream */fileinputstream fstream = new fileinputstream (uploadfile);/* Set 1024 bytes */INT buffersize = 1024 for each write; byte [] buffer = newbyte [buffersize]; int length =-1;/* read data from the file to the buffer */while (length = fstream. read (buffer ))! =-1) {/* write data to dataoutputstream */Ds. write (buffer, 0, length);} Ds. writebytes (end); DS. writebytes (twohyphens + boundary + twohyphens + end);/* close streams */fstream. close (); DS. flush ();/* Get Response content */inputstream is = con. getinputstream (); int ch; stringbuffer B = new stringbuffer (); While (CH = is. read ())! =-1) {B. append (char) CH);}/* display response in dialog */showdialog ("uploaded successfully" + B. tostring (). trim ();/* close dataoutputstream */Ds. close () ;}catch (exception e) {showdialog ("Upload Failed" + E) ;}/ * display dialog's Method */privatevoid showdialog (string mess) {New alertdialog. builder (photoupload. this ). settitle ("message "). setmessage (MESS ). setnegativebutton ("OK", new dialoginterface. onclicklistener () {publicvoid onclick (dialoginterface dialog, int which ){}}). show ();}}