Question

在java的action里面怎么获取jquery的ajax提交过来的json数据，数据的格式是

[{"sDepartmentId":"006","sCarType":"C","iPlanNumber":"0"},{"sDepartmentId":"006","sCarType":"P","iPlanNumber":"0"},{"sDepartmentId":"006","sCarType":"N","iPlanNumber":"0"},{"sDepartmentId":"006","sCarType":"G","iPlanNumber":"0"},{"sDepartmentId":"006","sCarType":"T","iPlanNumber":"0"},{"sDepartmentId":"007","sCarType":"C","iPlanNumber":"0"},{"sDepartmentId":"007","sCarType":"P","iPlanNumber":"0"},{"sDepartmentId":"007","sCarType":"N","iPlanNumber":"0"},{"sDepartmentId":"007","sCarType":"G","iPlanNumber":"0"},{"sDepartmentId":"007","sCarType":"T","iPlanNumber":"0"},{"sDepartmentId":"004","sCarType":"C","iPlanNumber":"0"},{"sDepartmentId":"004","sCarType":"P","iPlanNumber":"0"},{"sDepartmentId":"004","sCarType":"N","iPlanNumber":"0"},{"sDepartmentId":"004","sCarType":"G","iPlanNumber":"0"},{"sDepartmentId":"004","sCarType":"T","iPlanNumber":"0"},{"sDepartmentId":"005","sCarType":"C","iPlanNumber":"0"},{"sDepartmentId":"005","sCarType":"P","iPlanNumber":"0"},{"sDepartmentId":"005","sCarType":"N","iPlanNumber":"0"},{"sDepartmentId":"005","sCarType":"G","iPlanNumber":"0"},{"sDepartmentId":"005","sCarType":"T","iPlanNumber":"0"}]

这样的，我在后台改怎样会的啊！求高手帮助一下，谢谢！

Answer 1

如果要冲界面上要传到后台的话可以先将json对象转换成js对象（用evalJSON()方法可以转），然后当做参数传回来，action中就用request.getParameter()方法就能拿到了，不过看楼主的格式传过来的对象是一个数组，要拿到具体的值要用下标来那，比如你在action用一个objs去getParament这个传过来的对象的话，要拿到相应的第一行的值要这样：objs[0].sDepartmentId 拿到的值便是第一行的006，自己去试一下！嘿嘿

Answer 2

这种数据你编码成字符串后，把整个字符串发post请求，接收到后再用json工具类解析出来。http请求编码数组貌似提交不行。我以前直接干过这事，貌似出问题。

Answer 3

没有唯一标识符吗？？你的数据

$.post(
"<%=basePath%>/chg", //url
{newpwd:$("#newpwd2").val()}, //参数
function(data){
$("#sp").html(data); //回调函数

},
"html"
);

String newpwd=request.getParameter("newpwd"); //获得新密码

Answer 4

用Google gson 就可以转了 Gson类有方法fromJson（str）

Answer 5

使用Struts的JSON插件，直接接收JSON数据

追问

能说的在详细些吗，能给我写个列子吗，谢谢！