Spring MVC在接收集合请求参数时,需要在Controller方法的集合参数里前添加@RequestBody,而@RequestBody默认接收的enctype (MIME编码)是application/json,因此发送POST请求时需要设置请求报文头信息,否则Spring MVC在解析集合请求参数时不会自动的转换成JSON数据再解析成相应的集合。以下列举接收List<Integer>、List<User>、List<Map<String,Object>>、User[]、User(bean里面包含List)几种较为复杂的集合参数示例:
- 一、接收List<Integer>集合参数:
1、页面js代码:
Js代码
var arr = [1,2,3]; $.jBox.confirm("确定要删除数据吗?", "warning",function () { $.ajax({ type: ‘get‘, url: ‘${base.contextPath}/giving/index/del‘, dataType: ‘json‘, data: {ids: arr}, success: function (result) { … }, error: function (result) { … } }) })
2、Controller方法:
Java代码
@Controller @RequestMapping("/wxgiving") public class WxGivingController{ @RequestMapping(value = "/index/del", method = RequestMethod.GET) @ResponseBody public ReturnMsg del (@RequestParam(value = "ids[]")List <Integer> ids){ … } }
- 接收List<User>、User[]集合参数:
1、User实体类:
Java代码
public class User { private int id; private String name; private String pwd; //省略getter/setter }
2、页面js代码:
Js代码
//可以找前端拼成这种类型 var userList = new Array(); userList.push({name: "张三",pwd: "123"}); userList.push({name: "李四",pwd: "223"}); $.ajax({ type: "POST", url: "${base.contextPath}/user/index/add", data: JSON.stringify(userList),//将对象序列化成JSON字符串 dataType:"json", contentType : ‘application/json;charset=utf-8‘, //设置请求头信息 success: function(result){ … }, error: function(result){ … } });
3、Controller方法:
Java代码
@Controller @RequestMapping(value = "/user") public class UserController(){ @RequestMapping(value = "/index/add", method = RequestMethod.POST) @ResponseBody public ReturnMsg addOrEdit(@RequestBody List<User> userList) { … } }
如果想要接收User[]数组,只需要把add的参数类型改为@RequestBody User[] userArray就行了。
- 接收List<Map<String,Object>>集合参数:
1、页面js代码(不需要User对象了):
Js代码
-
var userList = new Array(); userList.push({name: "张三",pwd: "123"}); userList.push({name: "李四",pwd: "223"}); $.ajax({ type: "POST", url: "${base.contextPath}/user/index/add", data: JSON.stringify(userList),//将对象序列化成JSON字符串 dataType:"json", contentType : ‘application/json;charset=utf-8‘, //设置请求头信息 success: function(result){ … }, error: function(result){ … } });
2、Controller方法:
Java代码
-
@Controller @RequestMapping(value = "/user") public class UserController(){ @RequestMapping(value = "/index/add", method = RequestMethod.POST) @ResponseBody public ReturnMsg addOrEdit(@RequestBody List<Map<String,Object>> listMap) { … } }
- 接收User(bean里面包含List)集合参数:
1、User实体类:
Java代码
-
public class User { private int id; private String name; private String pwd; private List<User> userList; //省略getter/setter }
2、页面js代码:
Js代码
-
var userArray= new Array(); userArray.push({name: "张三",pwd: "123"}); userArray.push({name: "李四",pwd: "223"}); var user = {}; user.name = "王五"; user.pwd = "888"; user.userList= userArray; $.ajax({ type: "POST", url: "${base.contextPath}/user/index/add", data: JSON.stringify(user),//将对象序列化成JSON字符串 dataType:"json", contentType : ‘application/json;charset=utf-8‘, //设置请求头信息 success: function(result){ … }, error: function(result){ … } });
3、Controller方法:
Java代码
-
@Controller @RequestMapping(value = "/user") public class UserController(){ @RequestMapping(value = "/index/add", method = RequestMethod.POST) @ResponseBody public ReturnMsg addOrEdit(@RequestBody User user) { List<User> userList= user.getUserList();
原文地址:https://www.cnblogs.com/yangchuncool/p/9244190.html
时间: 2024-10-08 18:50:46