controller注解使用 resultful

布满荆棘的人生 2022-05-11 08:36 216阅读 0赞

## 可以使用正则 ##

@PutMapping("/{id:\\d+}")
    status().is4xxClientError() 参数异常

## JsonView ##

public class User {
    	public interface UserSimpleView {};
    	public interface UserDetailView extends UserSimpleView {};
    	
    	@JsonView(UserSimpleView.class) //简单视图 显示用户名
    	public String getUsername() {
    	@JsonView(UserDetailView.class) //细节显示密码
    	public String getPassword() {
    
    此外 在 controller接口上，也需要加入
    	@GetMapping("/{id:\\d+}")
    	@JsonView(User.UserDetailView.class)
    	public User getInfo(@ApiParam("用户id") @PathVariable String id) {

## 日期处理 传递时间戳 ##

@Test
    	public void whenUpdateSuccess() throws Exception {
    		
    		Date date = new Date(LocalDateTime.now().plusYears(1).atZone(ZoneId.systemDefault()).toInstant().toEpochMilli());
    		System.out.println(date.getTime());
    		String content = "{\"id\":\"1\", \"username\":\"tom\",\"password\":null,\"birthday\":"+date.getTime()+"}";
    		String reuslt = mockMvc.perform(put("/user/1").contentType(MediaType.APPLICATION_JSON_UTF8)
    				.content(content))
    				.andExpect(status().isOk())
    				.andExpect(jsonPath("$.id").value("1"))
    				.andReturn().getResponse().getContentAsString();
    		
    		System.out.println(reuslt);
    	}

@PutMapping("/{id:\\d+}")
    	public User update(@Valid @RequestBody User user, BindingResult errors) {
    		System.out.println(user.getId());
    		System.out.println(user.getUsername());
    		System.out.println(user.getPassword());
    		System.out.println(user.getBirthday()); //打印出来是 英文的年月日
    
    		user.setId("1");
    		return user; //返回给前台，依然是时间戳
    	}

## 分页 ##

@RequestMapping
    	public List<User> query(@PageableDefault(size = 15,page = 3,sort = {"age,desc"}) Pageable pageable){
    		//参数传递：size "15"
    		//page "3"
    		//sort "age,desc"
    		System.out.println(pageable.getPageSize());
    		System.out.println(pageable.getPageNumber());
    		System.out.println(pageable.getSort());
    		return null;
    	}

@Test
    	public void whenQuerySuccess() throws Exception {
    		String result = mockMvc.perform(
    				get("/user").param("username", "jojo").param("age", "18").param("ageTo", "60").param("xxx", "yyy")
    						// .param("size", "15")
    						// .param("page", "3")
    						// .param("sort", "age,desc")
    						.contentType(MediaType.APPLICATION_JSON_UTF8))
    				.andExpect(status().isOk()).andExpect(jsonPath("$.length()").value(3))
    				.andReturn().getResponse().getContentAsString();
    		
    		System.out.println(result);
    	}

## Hibernate Validator ##

![在这里插入图片描述][70]

![在这里插入图片描述][70 1]

@NotBlank(message = "密码不能为空")
    	private String password;
    	@Past(message = "生日必须是过去的时间")
    	private Date birthday;

@PutMapping("/{id:\\d+}")
        public User update(@Valid @RequestBody User user, BindingResult errors) {
            if (errors.hasErrors()) {
                errors.getAllErrors().stream().forEach(
                        error -> {
                            FieldError fieldError = (FieldError) error;
                            System.out.println(fieldError.getField()+":::"+fieldError.getDefaultMessage());
                            System.out.println(error.getDefaultMessage());
                        }
                );
            }

## 自定义注解校验逻辑 ##

### 注解 ###

@Target({ElementType.METHOD, ElementType.FIELD})
    @Retention(RetentionPolicy.RUNTIME)
    @Constraint(validatedBy = MyConstraintValidator.class)
    public @interface MyConstraint {
    	String message();
    	Class<?>[] groups() default { };
    	Class<? extends Payload>[] payload() default { };
    	String field() default "";
    }

### 实现 ###

public class MyConstraintValidator implements ConstraintValidator<MyConstraint, Object> {
    	@Autowired
    	private HelloService helloService;
    	@Override
    	public void initialize(MyConstraint constraintAnnotation) {
    		System.out.println("my validator init");
    	}
    	@Override
    	public boolean isValid(Object value, ConstraintValidatorContext context) {
    		helloService.greeting("tom");
    		System.out.println(value);
    		return true;
    	}
    }

@MyConstraint(message = "这是一个测试")
    	private String username;

## 错误全局页面 ##

![在这里插入图片描述][70 2]

## 自定义异常处理 ##

@ControllerAdvice
    public class ControllerExceptionHandler {
    
    	@ExceptionHandler(UserNotExistException.class) //自己的异常
    	@ResponseBody
    	@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    	public Map<String, Object> handleUserNotExistException(UserNotExistException ex) {
    		Map<String, Object> result = new HashMap<>();
    		result.put("id", ex.getId());
    		result.put("message", ex.getMessage());
    		return result;
    	}
    
    }

public class UserNotExistException extends RuntimeException {
    	private static final long serialVersionUID = -6112780192479692859L;
    	private String id; //提供get set
    	public UserNotExistException(String id) {
    		super("user not exist");
    		this.id = id;
    	}
    }

[70]: /images/20220511/02f7186e11184a7382a96409846ee988.png
[70 1]: /images/20220511/a5b37ce3a68549b8877018c2794bbb66.png
[70 2]: /images/20220511/743ed21c002c43b2b961139f581ed3ca.png