All kinds of tools you use (do not like to spray)

1:list Turn JSON

 Public StaticString List2jsonarray (List list) {StringBuffer str=NewStringBuffer ("["); if(List! =NULL&& list.size () > 0) {            intLen =list.size (); Object Map=NULL;  for(inti = 0; i < Len; i++) {Map=List.get (i); if(I > 0) {str.append (",");            } str.append (Jsonutil.object2json (map)); }} str.append ("]"); returnstr.tostring (); }

2:ajax returning a JSON string to the front end

//returns a JSON string to the front end     Public voidoutstring (String json) {printwriter print=NULL; Try{httpservletresponse response; Response= This. GetResponse (); Response.setcontenttype ("Text/json;charset=utf-8"); Response.setheader ("Cache-control", "No-cache"); Response.setheader ("Pargma", "No-cache"); Response.setdateheader ("Expires", 0); Print= This. GetResponse (). Getwriter ();        Print.write (JSON); } Catch(IOException e) {e.printstacktrace (); }    }

First eat to the other slowly add hey

All kinds of tools you use (do not like to spray)