我使用Spring Security和WAFFLE过滤器，根据ActiveDirectory服务器对用户进行身份验证。
我创建了一个额外的过滤器，用于根据我的数据库对用户进行身份验证（它只是检查是否
以前经过身份验证的用户在数据库中）。这是使用UserDetailsService。
此组合一直有效，直到我向服务添加了@Transactional带注释的方法。现在的服务
无法自动连接到过滤器。
这是服务类：
@Service
public class UserService implements UserDetailsService {
@Autowired
private UserRepository userRepository;
@Autowired
private LdapUserDao ldapUserDao;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
return getUserByUsername(username);
}
public User getUserByUsername(final String username) {
final User databaseUser = userRepository.findByUsername(username);
final User ldapUser = ldapUserDao.findByUsername(username);
if (null == databaseUser || null == ldapUser) {
return null;
}
final User user = mergeUsers(databaseUser, ldapUser);
return user;
}
public List<User> getAllUsers() {
return userRepository.findAll();
}
@Transactional
public void storeUser(final User user) {
userRepository.save(user);
}
private User mergeUsers(final User database, final User ldap) {
final User mergedUser = new User();
mergedUser.setId(database.getId());
mergedUser.setUsername(database.getUsername());
mergedUser.setEnabled(database.isEnabled());
mergedUser.setRoles(database.getRoles());
mergedUser.setEmail(ldap.getEmail());
mergedUser.setFirstName(ldap.getFirstName());
mergedUser.setLastName(ldap.getLastName());
mergedUser.setLocale(ldap.getLocale());
return mergedUser;
}
}
这是过滤器：
public class WaffleAuthenticationWrapperFilter extends GenericFilterBean {
@Autowired
private UserService userService;
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException {
final SecurityContext securityContext = SecurityContextHolder.getContext();
final Authentication authentication = securityContext.getAuthentication();
if (null == authentication || !(authentication instanceof WindowsAuthenticationToken)) {
chain.doFilter(request, response);
return;
}
final WindowsAuthenticationToken waffleAuthentication = (WindowsAuthenticationToken) authentication;
final String username = waffleAuthentication.getName().replaceAll("^.*\\\\", "");
final User user = userService.getUserByUsername(username);
if (null == user) {
securityContext.setAuthentication(null);
return;
}
final WaffleAuthenticationWrapper authenticationWrapper = new WaffleAuthenticationWrapper(waffleAuthentication,
user);
securityContext.setAuthentication(authenticationWrapper);
chain.doFilter(request, response);
}
}
一旦删除@Transactional，项目就会再次编译。为什么不能将方法注释为@Transactional？
这是stacktrace：
Exception in thread "main" org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:474)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at my.project.App.main(App.java:13)
Caused by: org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:98)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.<init>(TomcatEmbeddedServletContainer.java:75)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:378)
at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getEmbeddedServletContainer(TomcatEmbeddedServletContainerFactory.java:155)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:157)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130)
... 7 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.setFilterChainProxySecurityConfigurer(org.springframework.security.config.annotation.ObjectPostProcessor,java.util.List) throws java.lang.Exception; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'webSecurityConfig': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.auth.WaffleAuthenticationWrapperFilter my.project.config.WebSecurityConfig.waffleAuthenticationWrapperFilter; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'waffleAuthenticationWrapperFilter': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.services.UserService my.project.auth.WaffleAuthenticationWrapperFilter.userService; nested exception is java.lang.IllegalArgumentException: Can not set my.project.services.UserService field my.project.auth.WaffleAuthenticationWrapperFilter.userService to com.sun.proxy.$Proxy84
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:368)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.boot.context.embedded.ServletContextInitializerBeans.getOrderedBeansOfType(ServletContextInitializerBeans.java:209)
at org.springframework.boot.context.embedded.ServletContextInitializerBeans.addAsRegistrationBean(ServletContextInitializerBeans.java:165)
at org.springframework.boot.context.embedded.ServletContextInitializerBeans.addAsRegistrationBean(ServletContextInitializerBeans.java:160)
at org.springframework.boot.context.embedded.ServletContextInitializerBeans.addAdaptableBeans(ServletContextInitializerBeans.java:143)
at org.springframework.boot.context.embedded.ServletContextInitializerBeans.<init>(ServletContextInitializerBeans.java:74)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.getServletContextInitializerBeans(EmbeddedWebApplicationContext.java:234)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.selfInitialize(EmbeddedWebApplicationContext.java:221)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.access$000(EmbeddedWebApplicationContext.java:84)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext$1.onStartup(EmbeddedWebApplicationContext.java:206)
at org.springframework.boot.context.embedded.tomcat.TomcatStarter.onStartup(TomcatStarter.java:54)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5151)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration.setFilterChainProxySecurityConfigurer(org.springframework.security.config.annotation.ObjectPostProcessor,java.util.List) throws java.lang.Exception; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'webSecurityConfig': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.auth.WaffleAuthenticationWrapperFilter my.project.config.WebSecurityConfig.waffleAuthenticationWrapperFilter; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'waffleAuthenticationWrapperFilter': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.services.UserService my.project.auth.WaffleAuthenticationWrapperFilter.userService; nested exception is java.lang.IllegalArgumentException: Can not set my.project.services.UserService field my.project.auth.WaffleAuthenticationWrapperFilter.userService to com.sun.proxy.$Proxy84
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:649)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 35 more
Caused by: org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'webSecurityConfig': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.auth.WaffleAuthenticationWrapperFilter my.project.config.WebSecurityConfig.waffleAuthenticationWrapperFilter; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'waffleAuthenticationWrapperFilter': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.services.UserService my.project.auth.WaffleAuthenticationWrapperFilter.userService; nested exception is java.lang.IllegalArgumentException: Can not set my.project.services.UserService field my.project.auth.WaffleAuthenticationWrapperFilter.userService to com.sun.proxy.$Proxy84
at org.springframework.context.expression.StandardBeanExpressionResolver.evaluate(StandardBeanExpressionResolver.java:164)
at org.springframework.beans.factory.support.AbstractBeanFactory.evaluateBeanDefinitionString(AbstractBeanFactory.java:1365)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:957)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:606)
... 37 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'webSecurityConfig': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.auth.WaffleAuthenticationWrapperFilter my.project.config.WebSecurityConfig.waffleAuthenticationWrapperFilter; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'waffleAuthenticationWrapperFilter': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.services.UserService my.project.auth.WaffleAuthenticationWrapperFilter.userService; nested exception is java.lang.IllegalArgumentException: Can not set my.project.services.UserService field my.project.auth.WaffleAuthenticationWrapperFilter.userService to com.sun.proxy.$Proxy84
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:523)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:512)
at org.springframework.security.config.annotation.web.configuration.AutowiredWebSecurityConfigurersIgnoreParents.getWebSecurityConfigurers(AutowiredWebSecurityConfigurersIgnoreParents.java:52)
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.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:112)
at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:129)
at org.springframework.expression.spel.ast.MethodReference.access$000(MethodReference.java:49)
at org.springframework.expression.spel.ast.MethodReference$MethodValueRef.getValue(MethodReference.java:342)
at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:88)
at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:120)
at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:242)
at org.springframework.context.expression.StandardBeanExpressionResolver.evaluate(StandardBeanExpressionResolver.java:161)
... 41 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.auth.WaffleAuthenticationWrapperFilter my.project.config.WebSecurityConfig.waffleAuthenticationWrapperFilter; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'waffleAuthenticationWrapperFilter': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.services.UserService my.project.auth.WaffleAuthenticationWrapperFilter.userService; nested exception is java.lang.IllegalArgumentException: Can not set my.project.services.UserService field my.project.auth.WaffleAuthenticationWrapperFilter.userService to com.sun.proxy.$Proxy84
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 63 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'waffleAuthenticationWrapperFilter': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.services.UserService my.project.auth.WaffleAuthenticationWrapperFilter.userService; nested exception is java.lang.IllegalArgumentException: Can not set my.project.services.UserService field my.project.auth.WaffleAuthenticationWrapperFilter.userService to com.sun.proxy.$Proxy84
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1127)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1044)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
... 65 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private my.project.services.UserService my.project.auth.WaffleAuthenticationWrapperFilter.userService; nested exception is java.lang.IllegalArgumentException: Can not set my.project.services.UserService field my.project.auth.WaffleAuthenticationWrapperFilter.userService to com.sun.proxy.$Proxy84
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 76 more
Caused by: java.lang.IllegalArgumentException: Can not set my.project.services.UserService field my.project.auth.WaffleAuthenticationWrapperFilter.userService to com.sun.proxy.$Proxy84
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source)
at java.lang.reflect.Field.set(Unknown Source)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:557)
... 78 more
答案 0 :(得分：10)
要应用AOP spring使用代理，它们有两种风格JDK Dynamic Proxies（基于接口）和基于CgLIB的代理（基于类）。默认情况下，Spring将JDK Dynamic Proxies用于实现1个或更多接口的类。
在运行时，您将获得一个动态创建的对象（代理），该对象实现它所包装的类的所有接口（UserDetailsService）（UserService）。因此动态创建的对象是UserDetailsService而不是UserService。
因此，代理无法转换为UserService的错误。
你有（至少）两种方法来解决这个问题
当您调用getUserByUsername时，您需要创建一个新界面并实现此功能以及UserDetailsService。
public interface UserService {
User getUserByUsername(String username);
void storeUser(User user);
List<User> findAllUsers();
}
@Service("userService")
public class UserServiceImpl implements UserDetailsService, UserService { ... }
如果你这样做，你可以保持你的过滤器不受影响，因为UserService现在只是一个界面。如果为接口指定其他名称，则还必须将过滤器中的UserService字段更改为该类型。
当您使用Spring启动时，启用基于类的代理就像在application.properties文件中添加属性一样简单。
spring.aop.proxy-target-class=true
这将创建一个基于类的代理，这样您就可以保持过滤器的代码不变。
答案 1 :(得分：2)
@Autowired
private UserService userService;
应该成为
@Autowired
private UserDetailsService userService;
因为您的@Transactional代理不是UserService的实例，而是UserDetailService（您的界面）的实例
答案 2 :(得分：1)
正如@mdeinum指出的那样，java中的本机代理只能代理接口，而不能代理类。这也是最佳做法。所以你必须这样做：
@Autowired
private IUserService userService;
然后
public class UserService implements IUserService
然而，有些情况（特别是AOP）无法实现。如果是这种情况，您可以使用cglib代理而不是本机Java代理。你必须将它添加到你的（maven？）依赖项：
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>${cglib.version}</version>
</dependency>
告诉spring-aop代理类：
<aop:aspectj-autoproxy proxy-target-class="true"/>