SpringBoot请求参数接收方式

/** 
 * 参数不可为空，可为{}
 * userDto中的属性 非必填 
 */
@RequestMapping("/hello5") 
public String hello5(@RequestBody UserDto userDto) { 
  return userDto.getName() + "," \+ userDto.getAge(); 
}

@RequestMapping("/hello1") 
public String hello1(@RequestParam("name") String name) { 
  return name; 
} 
 
@RequestMapping("/hello2") 
public UserDto hello2(@RequestHeader("name") String name, @RequestHeader("age") Integer age) { 
  return new UserDto(name, age); 
} 
 
/** 
 * @param name 非必填 
 */
@RequestMapping("/hello3") 
public String hello3(String name) { 
  return name; 
} 
 
/** 
 * userDto中的属性 非必填 
 */
@RequestMapping("/hello4") 
public String hello4(UserDto userDto) { 
  return userDto.getName() + "," \+ userDto.getAge(); 
}

public class UserDto { 
 
  private String name; 
 
  private Integer age; 
 
  public String getName() { 
    return name; 
  } 
 
  public void setName(String name) { 
    this.name = name; 
  } 
 
  public Integer getAge() { 
    return age; 
  } 
 
  public void setAge(Integer age) { 
    this.age = age; 
  } 
}