SpringBoot获取前端传递Json的几种方法
优质文章,第一时间送达
作者 | 丁昆
来源 | urlify.cn/I3EvUn
一、Json对象+@RequestBody接收
var val = {id: 1, name: '小明'};
$.ajax({
url: '/getJson',
dataType: 'JSON',
type: 'post',
contentType: 'application/json;charset=UTF-8',
data: JSON.stringify(val),
success: function (msg) {
console.log(msg)
}
})
后端获取参数:Map<String,Object>
@PostMapping('/getJson')@ResponseBodypublic Map<String,Object> getJsonVal(@RequestBody Map<String,Object> user) { System.out.println('user = ' + user.get('id')); System.out.println('user = ' + user.get('name')); return user;}
后端获取参数:对象
@PostMapping('/getJson')
@ResponseBody
public User getJsonVal(@RequestBody User user) {
return user;
}
二、传JSON对象#
var val = {'id': 1, 'name': '小明'};$.ajax({ url: '/getJson', dataType: 'JSON', type: 'post', // contentType: 'application/json;charset=UTF-8', //不能加 data: val, success: function (msg) { console.log(msg) }})
后端获取参数
@PostMapping('/getJson')
@ResponseBody
public User getJsonVal(@RequestParam('id') String id,@RequestParam('name') String name) {
User user = new User();
user.setId(Integer.parseInt(id));
user.setName(name);
return user;
}
三、json集合+@RequestBody接收#
var val = [{'id': 1, 'name': '小明'},{'id': 2, 'name': '小红'}];$.ajax({ url: '/getJson', dataType: 'JSON', type: 'post', contentType: 'application/json;charset=UTF-8', //不能加 data: JSON.stringify(val), success: function (msg) { console.log(msg) }})
后端获取参数
@PostMapping('/getJson')
@ResponseBody
public List<User> getJsonVal(@RequestBody List<User> user) throws IOException {
for(User user2 : user){
System.out.println('user2 = ' + user2);
}
return user;
}
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