jquery serialization Form form using AJAX submission and processing returned JSON data

This article mainly introduces jQuery serializing form form form, using Ajax to submit and process the returned JSON data. Please refer to the following for your friends
1. Return JSON string: the code is as follows: / * * output a string to the browser * / protected void writejson (string JSON) {printwriter PW = null; try {servletresponse.setcontenttype ("text / plain; charset = UTF-8"); PW = servletresponse. Getwriter(); PW. Write (JSON); PW. Flush(); PW. Close();} catch (IOException E) {e.printstacktrace();} finally {if (PW! = null) {PW. Close();}}} 2. Convert the returned JSON string to JSON object through Eval: the code is as follows: $. Ajax ({data: {"shipmmsi": shipmmsi“ shipname":shipname         },         url : "shipbk/findShipMMSIAndName.do",         async : true,         type : "POST",         success : function(data) {             var ships = eval('(' + data + ')');             $("#bindShipmmsiDiv table tbody").html("");             if(ships!=null){                 if(ships.length){                     $("#b Indshipmmsidiv "). Show(); VAR TRS =" "; for (VaR I = 0; I < ships. Length; I + +) {TRS + =" tr > < td > "+ ships [i]. MMSI +" < / td > < td > "+ ships [i]. Veselname +" < td > < tr > ";} $(" bindshipmmsidiv table tbody "). Append (TRS); / / register click event for tr                 $("#bindShipmmsiDiv table tbody tr").click(function(){                         $(this).addClass('select_tr').siblings().removeClass('select_tr');                     });                     $("#bindShipmmsiDiv table tbody tr").dblclick(function(){                         fillShipMMSIAndName(this);                         $("#bindSh Ipmmsidiv "). Hide();});}}}}); 3. Through jQuery's $(" form "). Serialize(), the data of the form form can be serialized and submitted to the background, so the form form can be operated and the returned data can be processed through Ajax. Myform input [name= Godowdown warrior. Code] "). Val();} else {alert (res.message);}}}); 4. How to prevent garbled Code: JSP page: charset: UTF-8 servlet: UTF-8 filter: UTF-8 add a response.setcharacterencoding (" UTF-8 ") before printwriter out = response. Getwriter(). But remember to put it before you declare printwwrite. In a word, the front-end interface, java files, database and database connection all adopt unified coding, so as to avoid disorderly code and other situations