目录一、版本信息及maven依赖二、定义实体bean三、测试Controller四、hibernate-validator全局异常处理五、hibernate-validator快速校验
一、版本信息及maven依赖
hibernate-validator 7.x版本有问题，暂时以6.2.1.Final为例，6.2.1.Final版本解决了Log4j版本的漏洞
<properties> <!-- JDK版本 --> <java.version>1.8</java.version> <!-- 构建时编码 --> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <!-- 输出时编码 --> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <hutool.version>5.7.16</hutool.version> <hibernate-validator.version>6.2.1.Final</hibernate-validator.version> </properties>
记得引入：spring-boot-starter-validation
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-validation</artifactId> </dependency> <dependency> <groupId>org.hibernate.validator</groupId> <artifactId>hibernate-validator</artifactId> </dependency> <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>${hutool.version}</version> </dependency>
二、定义实体bean
import javax.validation.constraints.Email;import javax.validation.constraints.Max;import javax.validation.constraints.Min;import javax.validation.constraints.NotBlank; import org.hibernate.validator.constraints.Length; public class User { private Integer id; @Min(18) @Max(200) private Integer age; @NotBlank(message = "姓名不能为空") @Length(min = 2, max = 6, message = "长度必须在{min}和{max}个字符之间") private String name; @NotBlank(message = "电子邮箱不能为空") @Email(message = "电子邮箱格式不正确") private String email; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } @Override public String toString() { return "User [id=" + id + ", age=" + age + ", name=" + name + ", email=" + email + "]"; } }
三、测试Controller
需要在类上面加上注解：@Validated
import javax.validation.Valid;import javax.validation.constraints.NotNull; import org.springframework.validation.annotation.Validated;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController; @RestController@Validatedpublic class UserController { @RequestMapping("/get") public User get(@NotNull(message = "id不能为空") Integer id, @NotNull(message = "姓名不能为空") String name) { User user = new User(); user.setName("lisi"); user.setId(id); return user; } @RequestMapping("/save") public User get(@Valid User user) { return user; } }
四、hibernate-validator全局异常处理
import java.util.List;import java.util.Set; import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.validation.ConstraintViolation;import javax.validation.ConstraintViolationException; import org.springframework.http.HttpStatus;import org.springframework.validation.BindException;import org.springframework.validation.FieldError;import org.springframework.web.bind.MethodArgumentNotValidException;import org.springframework.web.bind.annotation.ControllerAdvice;import org.springframework.web.bind.annotation.ExceptionHandler;import org.springframework.web.bind.annotation.ResponseBody; @ControllerAdvicepublic class GlobalException { public static final String DELIM = "，"; @ExceptionHandler(Exception.class) @ResponseBody public String exceptionHandler(HttpServletRequest request, HttpServletResponse response, Exception e) { if(e instanceof ConstraintViolationException) { //@RequestParam上参数validate失败后抛出的异常 ConstraintViolationException cve = (ConstraintViolationException) e; Set<ConstraintViolation<?>> violations = cve.getConstraintViolations(); StringBuffer sb = new StringBuffer(""); for (ConstraintViolation<?> constraintViolation : violations) { sb.append(constraintViolation.getMessage()).append(DELIM); } if(sb.indexOf(DELIM) > -1) { sb.deleteCharAt(sb.length() - 1); } System.out.println("ConstraintViolationException sb="+sb); response.setStatus(HttpStatus.BAD_REQUEST.value()); return sb.toString(); }else if(e instanceof BindException) { //@RequestParam上实体对象validate失败后抛出的异常 BindException be = (BindException) e; System.out.println("be.getMessage()="+be.getMessage()); List<FieldError> fieldErrors = be.getBindingResult().getFieldErrors(); StringBuffer sb = new StringBuffer(""); for (FieldError fieldError : fieldErrors) { sb.append(fieldError.getDefaultMessage()).append(DELIM); //System.out.println("fieldError.getDefaultMessage() =" + fieldError.getDefaultMessage()); } if(sb.indexOf(DELIM) > -1) { sb.deleteCharAt(sb.length() - 1); } System.out.println("BindException sb="+sb); response.setStatus(HttpStatus.BAD_REQUEST.value()); return sb.toString(); }else if(e instanceof MethodArgumentNotValidException) { //@RequestBody上validate失败后抛出的异常 MethodArgumentNotValidException mave = (MethodArgumentNotValidException) e; System.out.println("mave.getMessage() = " + mave.getMessage()); List<FieldError> fieldErrors = mave.getBindingResult().getFieldErrors(); StringBuffer sb = new StringBuffer(""); for (FieldError fieldError : fieldErrors) { sb.append(fieldError.getDefaultMessage()).append(DELIM); //System.out.println("fieldError.getDefaultMessage() =" + fieldError.getDefaultMessage()); } if(sb.indexOf(DELIM) > -1) { sb.deleteCharAt(sb.length() - 1); } System.out.println("MethodArgumentNotValidException sb="+sb); response.setStatus(HttpStatus.BAD_REQUEST.value()); return sb.toString(); } return "系统异常"; }}
五、hibernate-validator快速校验
hibernate-validator默认会全部校验后再返回所有错误结果，为了让hibernate-validator检查到第一个错误马上返回结果，需要配置快速校验
import javax.validation.Validation;import javax.validation.Validator;import javax.validation.ValidatorFactory; import org.hibernate.validator.HibernateValidator;import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.validation.beanvalidation.MethodValidationPostProcessor; @Configurationpublic class ValidatorConfiguration { /** * 快速返回校验器 * @return */ @Bean @ConditionalOnMissingBean(value = Validator.class) public Validator validator() { //hibernate-validator 6.x没问题，7.x有问题 ValidatorFactory validatorFactory = Validation.byProvider(HibernateValidator.class) .configure() .failFast(true) //.addProperty("hibernate.validator.fail_fast", "true") .buildValidatorFactory(); return validatorFactory.getValidator(); } /** * 设置快速校验，返回方法校验处理器 * @return */ @Bean @ConditionalOnMissingBean(value = MethodValidationPostProcessor.class) public MethodValidationPostProcessor methodValidationPostProcessor() { MethodValidationPostProcessor postProcessor = new MethodValidationPostProcessor(); postProcessor.setValidator(validator()); return postProcessor; } }
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