我知道这个问题在这里被问了几次，但我找不到帮助我的答案
我正在尝试在我的控制器上使用@Valid注释，但是spring似乎不想对它做任何事情
这就是我在做的事情：
版本：
<org.springframework-version>4.0.5.RELEASE</org.springframework-version>
<hibernate-annotations-version>3.5.6-Final</hibernate-annotations-version>
我要验证的课程：
public class myclass{
private int id;
@NotEmpty
@Min(20)
private String title;
@NotEmpty
private String description;
}
控制器签名：
@RequestMapping(method = RequestMethod.POST)
@ResponseBody
public ServerResponse<Integer> addSomeClass(@RequestBody @Valid myclass mymy) {
我也配置了
@Configuration
@EnableWebMvc
public class WebMvcConfig extends WebMvcConfigurerAdapter {
private @Value("${web.maxFileUploadSize}") int MAX_FILE_UPLOAD_SIZE;
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
registry.addResourceHandler("/deployed/**").addResourceLocations("/deployed/");
}
@Bean
public CommonsMultipartResolver multipartResolver() {
CommonsMultipartResolver ret = new CommonsMultipartResolver();
ret.setMaxUploadSize(MAX_FILE_UPLOAD_SIZE);
return ret;
}
@Bean
public RequestMappingHandlerAdapter requestMappingHandlerAdapter(){
RequestMappingHandlerAdapter requestMappingHandlerAdapter = new RequestMappingHandlerAdapter();
List<HttpMessageConverter<?>> messageConverters = new LinkedList<>();
messageConverters.add(new MappingJackson2HttpMessageConverter());
requestMappingHandlerAdapter.setMessageConverters(messageConverters);
return requestMappingHandlerAdapter;
}
@Bean(name ="validator")
public LocalValidatorFactoryBean validator(){
return new LocalValidatorFactoryBean();
}
}
当我发送这个JSON时：
{"title":"","description":""}
没有任何反应，一切都在继续。
似乎无法找到答案。
更新
我已经有了：
<hibernate-validator-version>4.3.1.Final</hibernate-validator-version>
所以我把它更新为：5.1.1这就是我得到的
Caused by: org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:154) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:312) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1857) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1928) at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:343) at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:431) at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:416) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1612) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1549) ... 74 more Caused by: java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41) at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:269) at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:111) at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:459) at org.hibernate.cfg.beanvalidation.TypeSafeActivator.activate(TypeSafeActivator.java:97) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:148) ... 82 more Caused by: java.lang.ClassNotFoundException: javax.validation.ParameterNameProvider at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571) ... 92 more
所以我将validation-api更新为1.1.0.Final没有例外，但仍然没有验证
答案 0 :(得分：3)
在（myclass mymy）之后尝试并在控制器签名上传递BindingResult，就像这样
@RequestMapping(method = RequestMethod.POST)
@ResponseBody
public ServerResponse<Integer> addSomeClass(@RequestBody @Valid myclass mymy, BindingResult result) {
这通常对我有用，希望它也适合你.......！
答案 1 :(得分：1)
将Hibernate Validator依赖项添加到您的POM。
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.1.1.Final</version>
</dependency>
答案 2 :(得分：1)
请提供有关项目设置的更多信息。你用的是什么弹簧版？你用spring mvc吗？如果是，请检查您是否有JSR-303 Validator in your classpath。最新的弹簧版本应自动检测并拾取它。
除此之外，您必须provide a LocalValidatorFactoryBean才能使验证工作。
@Configuration
public class ValidationConfiguration
{
@Bean
public LocalValidatorFactoryBean localValidatorFactoryBean()
{
Locale.setDefault(Locale.ENGLISH);
return new LocalValidatorFactoryBean();
}
}
答案 3 :(得分：0)
我觉得有必要看看你的pom，或者至少是与这个问题相关的部分。我很确定这是依赖项之间的某些版本不匹配。根据你的春季版本，这是一个可能有用的组合：
<properties>
<spring.version>4.0.5.RELEASE</spring.version>
</properties>
<dependencies>
<!-- Spring dependencies -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Hibernate Validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.3.1.Final</version>
</dependency>
</dependencies>
===========编辑==========
只是想补充一点，看看控制器的更多实现细节也很有价值。如果您提供默认错误处理程序，那么您使用的方法可能会起作用（假设您具有正确的工件组合）。如果没有，你将不得不做@ Aph1ka建议的事情。以下是一些可能性：
@RequestMapping(value = "foo")
public class SomeController {
@RequestMapping(method = RequestMethod.POST)
@ResponseBody
public ServerResponse<Integer> addSomeClass(@RequestBody @Valid myclass mymy) {
....
}
@ExceptionHandler
@ResponseBody
@ResponseStatus(value = HttpStatus.BAD_REQUEST)
public Error handleException(MethodArgumentNotValidException exception) {
return new ApiErrors(exception.getBindingResult());
}
}
或
@RequestMapping(method = RequestMethod.POST)
@ResponseBody
public ServerResponse<Integer> addSomeClass(@RequestBody @Valid myclass mymy, Errors errors) {
if (errors.hasErrors()) {
// return error some view e.g.
return new ResponseEntity(new ApiErrors(errors), HttpStatus.BAD_REQUEST);
}
//....
}
或者，正如@ Aph1ka暗示：
@RequestMapping(method = RequestMethod.POST)
@ResponseBody
public ServerResponse<Integer> addSomeClass(@RequestBody @Valid myclass mymy, BindingResult result) {
if (result.hasErrors()) {
// return some error view
}
// ....
}
答案 4 :(得分：0)
测试控制器时遇到了类似的问题。添加时没有进行验证：
@InitBinder("multimediaParams")
但没有名字，就像这样：
@InitBinder
由于我们添加了第二个验证器，因此无法再使用最后一个选项。所以不要在测试中这样做：
Object handler = handlerMapping.getHandler(request).getHandler();
handlerAdapter.handle(request, response, handler);
我们现在手动添加了特定的验证器：
ConfigurableWebBindingInitializer webBindingInitializer = new ConfigurableWebBindingInitializer();
webBindingInitializer.setValidator(multimediaValidator);
handlerAdapter.setWebBindingInitializer(webBindingInitializer);
Object handler = handlerMapping.getHandler(request).getHandler();
handlerAdapter.handle(request, response, handler);
这样，验证将按预期再次进行。不漂亮，但有效。
答案 5 :(得分：-1)
@NotEmpty是特定于Hibernate的，如果要通过JSR-303验证bean，则应使用@NotNull。@Aph1ka。