1.添加依赖
直接添加 hibernate-validator
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.0.2.Final</version>
</dependency>
添加spring-boot-starter-validation
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
<version>1.4.0.RELEASE</version>
</dependency>
添加spring-boot-starter-web
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
2. 配置文件,如果想要设置fail_fast属性的话,true表示有一个参数出错即返回,默认的时检验所有的参数,那么必须要有配置文件
import org.hibernate.validator.HibernateValidator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.validation.beanvalidation.MethodValidationPostProcessor;
import org.springframework.validation.beanvalidation.SpringValidatorAdapter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
@Configuration
public class ValidatorConfig extends WebMvcConfigurerAdapter {
@Bean
public Validator validator() {
ValidatorFactory validatorFactory = Validation.byProvider(HibernateValidator.class)
.configure()
// 将fail_fast设置为true即可,如果想验证全部,则设置为false或者取消配置即可
.failFast(true)
// .addProperty("hibernate.validator.fail_fast", "true")
.buildValidatorFactory();
return validatorFactory.getValidator();
}
@Bean
public MethodValidationPostProcessor methodValidationPostProcessor() {
MethodValidationPostProcessor methodValidationPostProcessor = new MethodValidationPostProcessor();
methodValidationPostProcessor.setValidator(validator());
return methodValidationPostProcessor;
}
@Override
public org.springframework.validation.Validator getValidator() {
return new SpringValidatorAdapter(validator());
}
}
其中methodValidationPostProcessor是对requestParam起作用
继承WebMvcConfigurerAdapter 并且重写getValidator()方法,是让spring的请求校验Validator使用我们上边的validator,让设置的failFast生效,具体可参考org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport#mvcValidator方法
3.统一异常处理
@ExceptionHandler(BindException.class)
@ResponseBody
public WebResult validationErrorHandler(BindException ex) {
List<String> collect = ex.getBindingResult().getAllErrors()
.stream()
.map(ObjectError::getDefaultMessage)
.collect(Collectors.toList());
return new WebResult(Errors.INCORRECT_PARAM_FORMAT.getError(), StringUtils.join(collect, ";"));
}
@ExceptionHandler(MethodArgumentNotValidException.class)
@ResponseBody
public WebResult validationErrorHandler(MethodArgumentNotValidException ex) {
List<String> collect = ex.getBindingResult().getAllErrors()
.stream()
.map(ObjectError::getDefaultMessage)
.collect(Collectors.toList());
return new WebResult(Errors.INCORRECT_PARAM_FORMAT.getError(), StringUtils.join(collect, ";"));
}
@ExceptionHandler(ConstraintViolationException.class)
@ResponseBody
public WebResult validationErrorHandler(ConstraintViolationException ex) {
List<String> errorInformation = ex.getConstraintViolations()
.stream()
.map(ConstraintViolation::getMessage)
.collect(Collectors.toList());
return new WebResult(Errors.INCORRECT_PARAM_FORMAT.getError(),StringUtils.join(errorInformation, ";"));
}
4.使用
如果是@RequestParam这样直接写参数校验的话,在类上或者对应方法上加上Validated注解,如果是实体类接受的话,在参数中的实体前加上@Valid即可
以上就是SpringBoot使用validation做参数校验的实现步骤的详细内容,更多关于SpringBoot使用validation做参数校验的资料请关注编程网其它相关文章!