ajax代碼部分

var arr = [1,2,3];
 $.ajax({
            type: "post", 
            url:"/Zongjie/Servlet01",
            data: {"arr":arr},
            dataType:"json", 
            success:function(msg){
              
            },
            traditional :true,//阻止jq的深度序列化 
            error:function(data){          
            }
            }); 

后臺(tái)代碼

 String [] arr = request.getParameterValues("arr");
//如果ajax請(qǐng)求沒(méi)有加 traditional :true 則應(yīng)該在獲取數(shù)組時(shí)在參數(shù)名后邊加上[]
 String [] arr = request.getParameterValues("arr[]");