SpringMvc+ajax 实现json格式数据传递

转自[(http://www.cnblogs.com/andyfengzp/p/6184752.html)

传JSON对象

前端

function test () {    var param = {username : "yitop"};    $.ajax({        timeout : 20000,        type : "POST",        dataType : "JSON",        url : "/user/userRole.htm",        data : param,        success : function(data){            alert(data);        }        //注意：这里不能加下面这行，否则数据会传不到后台        //contentType:'application/json;charset=UTF-8',    });}

后端

Controller:

@RequestMapping(value = "userRole", method = RequestMethod.POST)@ResponseBodypublic List<Role> selectRoles(String username) throws WebTransException {    /* 逻辑代码 */}

传JSON字符串+@RequestBody接收

前端

function icheckDelete(url){    var parms = {        list : array //这是个数组    };    $.ajax({        dataType: "JSON",        contentType:'application/json;charset=UTF-8',//关键是要加上这行        traditional:true,//这使json格式的字符不会被转码        data: JSON.stringify(parms),        type: "DELETE",         timeout: 20000,        url: url,        success : function () {            alert("删除成功！");        },        error : function (data){            alert(data.responseText);        }    });}

后端

Controller:

@RequestMapping(value = "deleteList", method = RequestMethod.DELETE)@ResponseBodypublic String delete(@RequestBody DeleteListRequest request) throws WebTransException{    /* 逻辑代码 */    return "success";}

DeleteListRequest:/** * @author fengzp * @date 16/12/15下午6:08 * @email [e-mail] * @company 广州易站通计算机科技有限公司 */public class DeleteListRequest {    List<Map<String, String>> list = new ArrayList<>();    public DeleteListRequest() {    }    public List<Map<String, String>> getList() {        return list;    }    public void setList(List<Map<String, String>> list) {        this.list = list;    }}

之前使用@RequestBody接收json数据总是报400或者415，今天终于把它搞成功了，在这里记录一下。