Java backend mock-up form submission

Code enables processing of text fields and non-text fields

Request Code:

/** * Upload * * @param urlstr * @param textmap * @param filemap * @return */public s Tatic string Formupload (String urlstr, map<string, string> Textmap, map<string, string> Filemap)          {String res = "";          HttpURLConnection conn = null; String boundary = "---------------------------123821742118716";              Boundary is the delimiter of the request header and the content of the uploaded file try {url url = new URL (urlstr);              conn = (httpurlconnection) url.openconnection ();              Conn.setconnecttimeout (5000);              Conn.setreadtimeout (30000);              Conn.setdooutput (TRUE);              Conn.setdoinput (TRUE);              Conn.setusecaches (FALSE);              Conn.setrequestmethod ("POST");              Conn.setrequestproperty ("Connection", "keep-alive"); Conn. setrequestproperty ("User-agent", "mozilla/5.0" (Windows; U Windows NT 6.1; ZH-CN; rv:1.9.2.6) "); Conn.setrequestproperty ("Content-type", "multipart/form-data;                boundary= "+ boundary);              OutputStream out = new DataOutputStream (Conn.getoutputstream ());                  text if (Textmap! = null) {StringBuffer strbuf = new StringBuffer ();                  Iterator iter = Textmap.entryset (). Iterator ();                      while (Iter.hasnext ()) {Map.entry Entry = (map.entry) iter.next ();                      String inputname = (string) entry.getkey ();                      String inputvalue = (string) entry.getvalue ();                      if (Inputvalue = = null) {continue;                      } strbuf.append ("\ r \ n"). Append ("--"). Append (Boundary). Append ("\ r \ n"); Strbuf.append ("Content-disposition:form-data;                 Name=\ "" + InputName + "\" \r\n\r\n ");     Strbuf.append (Inputvalue);              } out.write (Strbuf.tostring (). GetBytes ()); }//File if (Filemap! = null) {Iterator iter = Filemap.entryset (). Iterator (                  );                      while (Iter.hasnext ()) {Map.entry Entry = (map.entry) iter.next ();                      String inputname = (string) entry.getkey ();                      String inputvalue = (string) entry.getvalue ();                      if (Inputvalue = = null) {continue;                      } File File = new file (inputvalue);                      String filename = File.getname ();                      String ContentType = new Mimetypesfiletypemap (). getContentType (file);                      if (Filename.endswith (". png")) {ContentType = "image/png"; } if (ContentType = = NULL | | cOntenttype.equals ("")) {ContentType = "application/octet-stream";                      } stringbuffer strbuf = new StringBuffer ();                      Strbuf.append ("\ r \ n"). Append ("--"). Append (Boundary). Append ("\ r \ n"); Strbuf.append ("Content-disposition:form-data; Name=\ "" + InputName + "\";                      Filename=\ "+ filename +" \ "\ \ \ \ \ \ \");                        Strbuf.append ("Content-type:" + contentType + "\r\n\r\n");                        Out.write (Strbuf.tostring (). GetBytes ());                      DataInputStream in = new DataInputStream (new FileInputStream (file));                      int bytes = 0;                      byte[] Bufferout = new byte[1024];                      while ((bytes = In.read (bufferout))! =-1) {out.write (bufferout, 0, bytes);       }               In.close ();              }} byte[] Enddata = ("\r\n--" + boundary + "--\r\n"). GetBytes ();              Out.write (Enddata);              Out.flush ();                Out.close ();              Read return data StringBuffer strbuf = new StringBuffer ();              BufferedReader reader = new BufferedReader (New InputStreamReader (Conn.getinputstream ()));              String line = null;              while (line = Reader.readline ())! = null) {Strbuf.append (line). append ("\ n");              } res = strbuf.tostring ();              Reader.close ();          reader = null; } catch (Exception e) {System.out.println ("error sending post request.              "+ urlstr);          E.printstacktrace ();                  } finally {if (conn! = null) {conn.disconnect ();              conn = null;      }} return res; }

To process the upload request code:

/** * Upload * @param request * @param response * @throws Exception */public void Doupload (HttpServletRequest request, Httpser Vletresponse response) throws Exception {String jsession = Request.getparameter ("Jsessionid"); System.out.println (jsession); HttpSession s = request.getsession (); System.out.println (S.getid ());D iskfileitemfactory factory = new Diskfileitemfactory ();//Set memory buffers, After writing the temporary file Factory.setsizethreshold (10240000); Servletfileupload upload = new Servletfileupload (factory);//Set maximum upload value for individual files Upload.setfilesizemax (10002400000l);// Sets the maximum value for the entire request Upload.setsizemax (10002400000l); Upload.setheaderencoding ("UTF-8");//date now = new Date (); Map map = new HashMap (); File Tmpfile = new file (Tmpfilepath), if (!tmpfile.exists ()) tmpfile.mkdirs (); List items = null;try {items = upload.parserequest (request),} catch (Fileuploadexception e) {throw new RuntimeException (e) ;} if (items = null) return;D ate date = new Date (); Iterator iter = Items.iterator (); String fileName = Tmpfilepath + file.separator +date.geTtime (); while (Iter.hasnext ()) {//loop gets each form item Fileitem item = (Fileitem) iter.next (); if (Item.isformfield ()) {String name = Item.getfieldname (); try {String value = item.getstring ("Utf-8");//If the parameter contains Chinese, it prevents garbled map.put (name, value);} catch ( Unsupportedencodingexception e) {//TODO auto-generated catch Blocke.printstacktrace ();}} else if (item.getname (). Length () > 0) {String namefix = Item.getname (); namefix = Namefix.substring ( Namefix.lastindexof (".")); filename = filename +namefix;item.write (new File);}} String type = (string) map.get ("type"), if (Type.equals ("war")) {request.getsession (). SetAttribute ("Warfilename", FileName);} else if (type.equals ("SQL")) {request.getsession (). SetAttribute ("Sqlfilename", FileName);} try {map.put ("data", FileName), Response.getwriter (). Write (jsonutils.converttostring (map));} catch (IOException e) { E.printstacktrace ();}}

To test the calling code:

/**      * @param args      *      /public static void main (string[] args) {                    String filepath= "D:\\test\\ppghost.war";                    String urlstr = "Http://localhost:8080/iopm/version/add.do?method=upload";                    map<string, string> textmap = new hashmap<string, string> ();                Textmap.put ("name", "TestName");          Textmap.put ("Type", "war");            map<string, string> filemap = new hashmap<string, string> ();                    Filemap.put ("UserFile", filepath);                    String ret = formupload (Urlstr, Textmap, filemap);                    SYSTEM.OUT.PRINTLN (ret);                  }

　　

Java backend mock-up form submission