【springboot】springboot validation 参数验证、分组验证及全局统一异常处理

约定不等于承诺〃 2022-12-04 01:11 366阅读 0赞

一、jar包添加下面其中之一即可

<dependency>
 <groupId>org.hibernate.validator</groupId>
 <artifactId>hibernate-validator</artifactId>
 <version>根据实际情况指定版本号</version>
 </dependency>

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-validation</artifactId>
 <version>根据实际情况指定版本号</version>
 </dependency>

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-web</artifactId>
 </dependency>

因为springcloud项目已经引入spring-boot-starter-web

二、在实体中增加验证注解

注意下下面的注解中的groups属性作用：当实体用于不同的场景时，在验证时需要加以区分，此时需要用到分组。

如果不需要区分使用场景，可以去掉groups属性。

如本示例中，定义了两个分组Creation, Modification用于区分在新增、修改场景下对属性做不同的数据校验

public class RmRegionEntity extends BaseEntity{
    	private static final long serialVersionUID = -322027541582939044L;
    
    	@NotBlank(message="区域主键不能为空！", groups = {Creation.class, Modification.class})
    	private String pkRegion; //区域主键
    
        
        @NotNull(message="城市级别不能为空！", groups = {Creation.class, Modification.class})
        private Integer fcitygrade; //城市级别:5071省级、5072地级、5073县级
        
    
        
        @NotBlank(message="创建人名称不能为空！", groups = {Creation.class})
        private String creatorName; //创建人名称
        
        
        @NotBlank(message="修改人名称不能为空！", groups = {Modification.class})
        private String modifierName; //修改人名称
        
    
    
    }

三、在Controller中的使用

使用@Valid或@Validated，但当指定分组时需要使用@Validated

下面示例中，因用到分组，所以注解中传入了Creation，表示在数据校验时校验实体中分组为Creation的属性。

如果没用到分组，@Valid或@Validated都可以使用不用传值，直接使用即可

@PostMapping("/v1/insertRmRegion") 
 	public ResponseResult<Integer> insertRmRegion(@Validated({Creation.class}) @RequestBody RmRegionEntity rmRegionEntity) {
 		ResponseResult<Integer> result = new ResponseResult<>();
 		Integer count = null;
 		
 		try {
 			count = rmRegionService.insertRmRegion(rmRegionEntity);
 			
 			result.responseSuccess(null, count, "新增数据成功！");
 		}catch(BizException e) {
 			logger.warn("业务异常", e);
 			result.responseBizException(null, null, e.getMessage());
 		}catch(Exception e) {
 			logger.error("新增信息出现异常", e);
 			result.responseException(null, null, e.getMessage());
 		}
 		
 		return result;
 	}

四、分组定义

定义成一个空的接口即可

public interface Creation {
    
    }

五、全局异常处理

如果要将校验的错误信息格式化成自己想要的格式，可以通过全局异常进行统一捕捉，然后返回错误信息。

类上增加注解@RestControllerAdvice

@RestControllerAdvice
 public class GlobelExceptionAdvice {
 	private static final Logger logger = LoggerFactory.getLogger(GlobelExceptionAdvice.class);
 
 	@Autowired
 	private HttpServletRequest httpServletRequest;
 	/**
 	 * 参数校验异常
 	 *
 	 * @param exception
 	 * @return
 	 */
 	@ExceptionHandler({ MethodArgumentNotValidException.class })
 	public ResponseResult<String> methodArgumentNotValid(MethodArgumentNotValidException exception) {
 		ResponseResult<String> result = new ResponseResult<>();
 
 		BindingResult bindingResult = exception.getBindingResult();
 		//返回第一个错误的信息
 		String defaultMessage = bindingResult.getFieldError().getDefaultMessage();
 		String code = bindingResult.getFieldError().getCode();
 		String field = bindingResult.getFieldError().getField();
 		result.responseBizException(code, field, defaultMessage);
 
 		logger.warn("参数验证错误，错误信息: {}, 请求的URL: {}", result, httpServletRequest.getRequestURI());
 
 		return result;
 
 	}
 	
 	/**
 	 * 参数校验异常
 	 *
 	 * @param exception
 	 * @return
 	 */
 	@ExceptionHandler(value = BindException.class)
 	public ResponseResult<String> bindException(BindException exception) {
 		ResponseResult<String> result = new ResponseResult<>();
 
 		BindingResult bindingResult = exception.getBindingResult();
 		//返回第一个错误的信息
 		String defaultMessage = bindingResult.getFieldError().getDefaultMessage();
 		String code = bindingResult.getFieldError().getCode();
 		String field = bindingResult.getFieldError().getField();
 		result.responseBizException(code, field, defaultMessage);
 
 		logger.warn("参数验证错误，错误信息: {}, 请求的URL: {}", result, httpServletRequest.getRequestURI());
 
 		return result;
 
 	}
 	
 	/**
 	 * 数据类型校验异常
 	 * @param exception
 	 * @return
 	 */
 	@ExceptionHandler(value = UnexpectedTypeException.class)
 	public ResponseResult<String> unexpectedTypeException(UnexpectedTypeException exception) {
 		ResponseResult<String> result = new ResponseResult<>();
 		result.responseBizException(null, exception.getMessage(), "数据类型错误！");
 
 		logger.warn("参数验证错误，错误信息: {}, 请求的URL: {}", result, httpServletRequest.getRequestURI());
 
 		return result;
 
 	}

属性验证注解

<table> 
 <tbody> 
 <tr> 
 <td style="vertical-align:top;"> 注解 </td> 
 <td style="vertical-align:top;"> 适用的数据类型 </td> 
 <td style="vertical-align:top;"> 说明 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @AssertFalse </td> 
 <td style="vertical-align:top;"> Boolean, boolean </td> 
 <td style="vertical-align:top;"> 验证注解的元素值是false </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @AssertTrue </td> 
 <td style="vertical-align:top;"> Boolean, boolean </td> 
 <td style="vertical-align:top;"> 验证注解的元素值是true </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @DecimalMax（value=x） </td> 
 <td style="vertical-align:top;"> BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值小于等于@ DecimalMax指定的value值 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @DecimalMin（value=x） </td> 
 <td style="vertical-align:top;"> BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值小于等于@ DecimalMin指定的value值 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Digits(integer=整数位数, fraction=小数位数) </td> 
 <td style="vertical-align:top;"> BigDecimal, BigInteger, String, byte,short, int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of Number andCharSequence. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值的整数位数和小数位数上限 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Future </td> 
 <td style="vertical-align:top;"> java.util.Date, java.util.Calendar; Additionally supported by HV, if the<a href="http://joda-time.sourceforge.net/" rel="nofollow">Joda Time</a>&nbsp;date/time API is on the class path: any implementations ofReadablePartial andReadableInstant. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值（日期类型）比当前时间晚 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Max（value=x） </td> 
 <td style="vertical-align:top;"> BigDecimal, BigInteger, byte, short,int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type ofCharSequence (the numeric value represented by the character sequence is evaluated), any sub-type of Number. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值小于等于@Max指定的value值 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Min（value=x） </td> 
 <td style="vertical-align:top;"> BigDecimal, BigInteger, byte, short,int, long and the respective wrappers of the primitive types. Additionally supported by HV: any sub-type of CharSequence (the numeric value represented by the char sequence is evaluated), any sub-type of Number. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值大于等于@Min指定的value值 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @NotNull </td> 
 <td style="vertical-align:top;"> Any type </td> 
 <td style="vertical-align:top;"> 验证注解的元素值不是null </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Null </td> 
 <td style="vertical-align:top;"> Any type </td> 
 <td style="vertical-align:top;"> 验证注解的元素值是null </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Past </td> 
 <td style="vertical-align:top;"> java.util.Date, java.util.Calendar; Additionally supported by HV, if the<a href="http://joda-time.sourceforge.net/" rel="nofollow">Joda Time</a>&nbsp;date/time API is on the class path: any implementations ofReadablePartial andReadableInstant. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值（日期类型）比当前时间早 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Pattern(regex=正则表达式, flag=) </td> 
 <td style="vertical-align:top;"> String. Additionally supported by HV: any sub-type of CharSequence. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值与指定的正则表达式匹配 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Size(min=最小值, max=最大值) </td> 
 <td style="vertical-align:top;"> String, Collection, Map and arrays. Additionally supported by HV: any sub-type of CharSequence. </td> 
 <td style="vertical-align:top;"> 验证注解的元素值的在min和max（包含）指定区间之内，如字符长度、集合大小 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Valid </td> 
 <td style="vertical-align:top;"> Any non-primitive type（引用类型） </td> 
 <td style="vertical-align:top;"> 验证关联的对象，如账户对象里有一个订单对象，指定验证订单对象 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @NotEmpty </td> 
 <td style="vertical-align:top;"> <code>CharSequence</code>,<code>Collection</code>,&nbsp;<code>Map and Arrays</code> </td> 
 <td style="vertical-align:top;"> 验证注解的元素值不为null且不为空（字符串长度不为0、集合大小不为0） </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Range(min=最小值, max=最大值) </td> 
 <td style="vertical-align:top;"> <code>CharSequence, Collection, Map and Arrays,BigDecimal, BigInteger, CharSequence, byte, short, int, long and the respective wrappers of the primitive types</code> </td> 
 <td style="vertical-align:top;"> 验证注解的元素值在最小值和最大值之间 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @NotBlank </td> 
 <td style="vertical-align:top;"> <code>CharSequence</code> </td> 
 <td style="vertical-align:top;"> 验证注解的元素值不为空（不为null、去除首位空格后长度为0），不同于@NotEmpty，@NotBlank只应用于字符串且在比较时会去除字符串的空格 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Length(min=下限, max=上限) </td> 
 <td style="vertical-align:top;"> <code>CharSequence</code> </td> 
 <td style="vertical-align:top;"> 验证注解的元素值长度在min和max区间内 </td> 
 </tr> 
 <tr> 
 <td style="vertical-align:top;"> @Email </td> 
 <td style="vertical-align:top;"> <code>CharSequence</code> </td> 
 <td style="vertical-align:top;"> 验证注解的元素值是Email，也可以通过正则表达式和flag指定自定义的email格式 </td> 
 </tr> 
 </tbody> 
</table>

参考地址：

[https://www.cnblogs.com/moues/p/11399421.html][https_www.cnblogs.com_moues_p_11399421.html]

[https://blog.51cto.com/1197822/2467086][https_blog.51cto.com_1197822_2467086]

[https://blog.csdn.net/songguopeng/article/details/98961787][https_blog.csdn.net_songguopeng_article_details_98961787]

[https_www.cnblogs.com_moues_p_11399421.html]: https://www.cnblogs.com/moues/p/11399421.html
[https_blog.51cto.com_1197822_2467086]: https://blog.51cto.com/1197822/2467086
[https_blog.csdn.net_songguopeng_article_details_98961787]: https://blog.csdn.net/songguopeng/article/details/98961787