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
到此这篇关于SpringBoot使用validation做参数校验说明的文章就介绍到这了,更多相关SpringBoot参数校验内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！
