SpringMVC中Controller层获取前端请求参数的方式汇总

/**
     * @description: 测试springmvc自动绑定
     * @author: Vinci
     * @date: 2023/8/23 16:32
     **/
    @GetMapping("/automaticallyBindParameters")
    public String automaticallyBindParameters(String message,String test){
        return "message="+message + ",test="+test;
    }

/**
     * @description: 测试@RequestParam注解
     * @author: Vinci
     * @date: 2023/8/24 8:28
     **/
    @GetMapping("/testRequestParam")
    public String testRequestParam(
            @RequestParam(value = "number",required = false,defaultValue = "1") int i
    ){
        return "number=" + i;
    }

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private String id;
    private String username;
    private String password;
}

/**
     * @description: 使用实体接收JSON
     * @author: Vinci
     * @date: 2023/8/24 9:01
     **/
    @GetMapping("/testReceiveJson")
    public String testReceiveJson(@RequestBody User user){
        return user.toString();
    }

/**
     * @description: 使用Map接收JSON
     * @author: Vinci
     * @date: 2023/8/24 9:15
     **/
    @GetMapping("/testMapReceiveJson")
    public String testMapReceiveJson(@RequestBody Map<String,Object> maps){
        return maps.toString();
    }

/**
     * @description: 使用List集合接收JSON数组
     * @author: Vinci
     * @date: 2023/8/24 9:17
     **/
    @GetMapping("/testListJson")
    public String testListJson(@RequestBody List<User> users){
        return users.toString();
    }

/**
     * @description: 使用@PathVariable注解获取地址栏指定位置参数
     * @author: Vinci
     * @date: 2023/8/24 9:32
     **/
    @GetMapping("/testGetAddressBarParameters/{id}")
    public String addressBarParameters(@PathVariable int id){
        return String.valueOf(id);
    }