Java Remote Download picture

When copying an article from another website, download the image to our website and replace it with the address of our website.

　　

<script type= "text/javascript" >window. Nextpic=function(url,name) {    var cb = "http://localhost:8080" +URL    Console.log ("haha");     var src = document.getElementById (name). src    ifreturn;     = CB;} </script>

 Public classWanewsinfovoextendsPage<wanewsinfo>{        PrivateInteger ID; PrivateString title; PrivateInteger typeId; PrivateString TypeName; PrivateInteger typeId2; PrivateString typeName2; PrivateString logo; PrivateString content; PrivateString Createtime; PrivateString CreateUser; PrivateString Createusername; PrivateString Tag1; PrivateString Tag2; PrivateInteger Isdisplay; PrivateInteger Browser; PrivateString Summary;}

Coding
private static final String ecoding = "UTF-8";
Get the IMG tag regular
private static final String Imgurl_reg = "]*?> ";
Gets the regular of the SRC path
private static final String Imgsrc_reg = "(Http|https): \"? (.*?) (\ "|>|\\s+)";

Add or modify information public int insertorupdate (httpservletrequest request, Wanewsinfovo vo) {String AAA = "/attached/image/"; String path = Request.getsession (). Getservletcontext (). Getrealpath (".. /") +"/attached/image/";//Get Picture label list<string> Imgurl = Getimageurl (Vo.getcontent ());//Get Picture src address          list< string> imgsrc = getimagesrc (imgurl);         Download Image          Download (imgsrc,path);         String test = Replacehtmltag (Vo.getcontent (), "img", "src", "src=\" "+aaa," \ "");        Vo.setcontent (test);        if (Commutil.isempty (Vo.getid ())) {vo.setbrowser (0); return Wanewsdao.insert (VO);} Return Wanewsdao.update (VO);}

   /*** * Get imageurl address * *@paramHTML *@return      */      PrivateList<string>Getimageurl (String HTML) {Matcher Matcher=Pattern.compile (Imgurl_reg). Matcher (HTML); List<String> Listimgurl =NewArraylist<string>();  while(Matcher.find ()) {Listimgurl.add (Matcher.group ()); }          returnListimgurl; }     /*** * Get HTML content * *@paramURL *@return      * @throwsException*/      PrivateString gethtml (string url)throwsException {URL uri=Newurl (URL); URLConnection Connection=uri.openconnection (); InputStream in=Connection.getinputstream (); byte[] buf =New byte[1024]; intLength = 0; StringBuffer SB=NewStringBuffer ();  while(length = In.read (buf, 0, buf.length)) > 0) {sb.append (NewString (buf, ecoding));          } in.close (); returnsb.tostring (); }      /*** * Get IMAGESRC address * *@paramListimageurl *@return      */      PrivateList<string> Getimagesrc (list<string>Listimageurl) {List<String> LISTIMGSRC =NewArraylist<string>();  for(String image:listimageurl) {Matcher Matcher=Pattern.compile (Imgsrc_reg). Matcher (image);  while(Matcher.find ()) {Listimgsrc.add (Matcher.group (). Substring (0, Matcher.group (). Length ()-1)); }          }          returnlistimgsrc; }      /*** * Download Image * *@paramlistimgsrc*/      Private voidDownload (list<string>listimgsrc, String Path) {          Try {               for(String url:listimgsrc) {if(Url.indexof ("http") >=0) {String imageName= Url.substring (Url.lastindexof ("/") + 1, Url.length ()); URL URI=Newurl (URL); InputStream in=Uri.openstream (); FileOutputStream fo=NewFileOutputStream (NewFile (path,imagename)); byte[] buf =New byte[1024]; intLength = 0; System.out.println ("Start Download:" +URL);  while(length = In.read (buf, 0, buf.length))! =-1) {fo.write (buf,0, length);                  } in.close ();                  Fo.close (); System.out.println (Path+imagename + "Download Complete"); }            }          } Catch(Exception e) {System.out.println ("Download Failed"); }      }     

Replace IMG Tag

    /*** Replace the properties and values of the specified label *@paramstring to be processed by STR *@paramtag Tag name *@paramTagattrib the Tag property value to replace *@paramstarttag new Tag start tag *@paramEndtag new Tag end tag *@return      * @authorHuweijun * @date July 13, 2016 PM 7:15:32*/       Public Staticstring Replacehtmltag (String str, string tag, string tagattrib, String Starttag, String endtag) {//match with  EndString Regxpfortag = "<\\s*" + Tag + "\\s+ ([^>]*) \\s*" ; //match src= "Start," EndString Regxpfortagattrib = tagattrib + "=\\s*\" ([^\ "]+) \" " ; //Post-compiled regular expressionsPattern Patternfortag =Pattern.compile (Regxpfortag,pattern.          case_insensitive); Pattern Patternforattrib=Pattern.compile (Regxpfortagattrib,pattern.        case_insensitive); //Check the Matcher Matcherfortag =Patternfortag.matcher (str); StringBuffer SB=NewStringBuffer (); //If there is a result        Booleanresult =Matcherfortag.find ();  while(Result) {StringBuffer sbreplace=NewStringBuffer ("<" +tag+ ""); //find the first Matcher Matcherforattrib = Patternforattrib.matcher (Matcherfortag.group (1)); if(Matcherforattrib.find ()) {String attributestr= Matcherforattrib.group (1); String ImageName= Attributestr.substring (Attributestr.lastindexof ("/") + 1, Attributestr.length ()); Sbreplace.append ("Id=" "+imagename+" ' alt= ' picture ' onerror=\ ' nextpic ('/attached/image/' +imagename+ "', '" +imagename+ "'); \" "); Matcherforattrib.appendreplacement (Sbreplace, Starttag+ "Rcwimg" +Endtag);              } matcherforattrib.appendtail (Sbreplace);              Matcherfortag.appendreplacement (SB, sbreplace.tostring ()); Result=Matcherfortag.find ();                   } matcherfortag.appendtail (SB); returnsb.tostring (); }      

Java Remote Download picture