后端获取前端数据三种方式

后端获取前端数据三种方式

@RequestParam、

---

前端发出的请求： path?id=1

获取前端传来的非json格式的数据

// 单个数据,@RequestParam中的值一定要与前端属性名一致
public void test(@RequestParam("name)" String name){
	System.out.println(params);
}
 
// 数组数据
@RequestMapper(value="path")
public void test(@RequestParam Map<String,Object> params){
	System.out.println(params);

@PathVariable

---

前端发出的请求：path/{id};

@RequestMapper(value="path/{id}")
public void test(@PathVariable("id") int id){
	System.out.println(id);
}

@RequestBody

获取前台出来的json格式的数据

$.ajax({
        type: 'POST',//方法类型
        url: url,
        contentType: 'application/json',
        data: {
        	"username":"小明",
        	"sex":"男",
        	"age":"18"
        },
        success: function (result) {
            if (result == 200) {
                $('#goodsModal').modal('hide');
                swal({
                    title: swlMessage,
                    type: 'success',
                    showCancelButton: false,
                    confirmButtonColor: '#1baeae',
                    confirmButtonText: '返回商品列表',
                    confirmButtonClass: 'btn btn-success',
                    buttonsStyling: false
                }).then(function () {
                    window.location.href = "/admin/goods";
                })
            } else {
                $('#goodsModal').modal('hide');
                swal(result.message, {
                    icon: "error",
                });
            }
            ;
        }
    });

// bean
public class User{
	private String username;
	private String sex;
		..
}
 
// Controller中代码片段
@RequestMapper(value="path/{id}",method = RequestMethod.POST)
public void test(@RequestBody User user){
	System.out.println(user);
}