Spring @Valid和@Validated区别和用法实例

public interface First{}

public interface Second{}
public class User {
	// 所有都验证
	@NotNull(message = "...")
	private int id;

 	// First 才验证
	@NotNull(message = "...", groups = { First.class })
	private String username;
 
 	// First 或 Second 才验证
	@NotNull(message = "...", groups = { First.class, Second.class })
	private String content;
	
	// First 验证 NotEmpty，Second 验证 Size
	@NotEmpty(message = "...", groups = { First.class })
	@Size(message = "...", min = 3, max = 8, groups = { Second.class })
	private String height;
}
// 只验证 Second 分组和没有分组的属性
public String save(@Validated( { Second.class }) User user, BindingResult result) {
	if (result.hasErrors()) {
		return "validate/error";
	}
	return "redirect:/success";
}

public interface GroupA {}
 
public interface GroupB {}
 
@GroupSequence( { GroupA.class, GroupB.class })
public interface Group {}

public @ResponseBody String save(@Validated({ Group.class }) User user, BindingResult result) {
	if(result.hasErrors()) {
		return false;
	}
	return true;
}

public class Item {
  @NotNull(message = "id不能为空")
  @Min(value = 1, message = "id必须为正整数")
  private Long id;

	@Valid
  @NotNull(message = "props不能为空")
  @Size(min = 1, message = "至少要有一个属性")
  private List<Prop> props;
}

public class Prop {
  @NotNull(message = "pid不能为空")
  @Min(value = 1, message = "pid必须为正整数")
  private Long pid;

  @NotNull(message = "vid不能为空")
  @Min(value = 1, message = "vid必须为正整数")
  private Long vid;

  @NotBlank(message = "pidName不能为空")
  private String pidName;

  @NotBlank(message = "vidName不能为空")
  private String vidName;
}

@RestController
public class ItemController {
  @RequestMapping("/item/add")
  public void addItem(@Validated Item item, BindingResult bindingResult) {
    doSomething();
  }
}

@Controller 
public class PeopleController { 
  @RequestMapping("/add") 
  public @ResponseBody String add(@Validated People pp, BindingResult result1, @Validated Person ps, BindingResult result2) 
  { 
    if(result1.hasErrors()) 
    { 
      return false; 
    } 
    if(result2.hasErrors()) 
    { 
      return false; 
    } 
    return true; 
  } 
}