Action on the page to pass parameters to the background to appear garbled code solution

Using jquery ajax on the page

function createQS(name){
 var value = encodeURI(name);
 var queryString = {key:value};
 return queryString;
}
//Name retrieval method
function jiansuoByName(k,name){
 if (name == '') {
  alert(" Please enter the retrieved content ");
  return;
 }
  $.post(basePath+"/sysmgr/searchesAjax/searchesJsonPlugin!searchesNameByOMCByName.action", createQS(name),
     function(data){
       //alert(data.result+'n'+k); // John
       setLine_memoryFunction_A(data.result,k);       
     }, "json");
}

import java.net.URLDecoder;
String _name = request.getParameter("key");
String name = URLDecoder.decode(_name,"utf-8");