Java 在SpringMVC中创建自定义注释并获取httpservletrequest对象
我想创建自定义注释,并使用Java 在SpringMVC中创建自定义注释并获取httpservletrequest对象,java,spring,spring-mvc,annotations,spring-annotations,Java,Spring,Spring Mvc,Annotations,Spring Annotations,我想创建自定义注释,并使用HttpServletRequest对象将该注释放在方法级别。到目前为止,我做到了: 创建注释 @Target(value={ElementType.METHOD,ElementType.PARAMETER}) @Retention(value=RetentionPolicy.RUNTIME) @Documented @Inherited @Mapping public @interface CheckSession{ boolean isAuthenticat
HttpServletRequest
对象将该注释放在方法级别。到目前为止,我做到了:
创建注释
@Target(value={ElementType.METHOD,ElementType.PARAMETER})
@Retention(value=RetentionPolicy.RUNTIME)
@Documented
@Inherited
@Mapping
public @interface CheckSession{
boolean isAuthenticate() default false;
}
已创建处理程序类
@Component
public class CheckSessionClass implements HandlerMethodReturnValueHandler,HandlerMethodArgumentResolver {
@Override
public Object resolveArgument(MethodParameter arg0,
ModelAndViewContainer arg1, NativeWebRequest arg2,
WebDataBinderFactory arg3) throws Exception {
logger.info("......MY ANNOTATION CALLEDD.....resolveArgument");
return null;
}
@Override
public boolean supportsParameter(MethodParameter arg0) {
logger.info("......MY ANNOTATION CALLEDD.....supportsParameter");
return false;
}
@Override
public void handleReturnValue(Object retutnValue, MethodParameter returnType,
ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception {
CheckSession annotation;
annotation=returnType.getMethodAnnotation(CheckSession.class);
if(annotation.isAuthenticate()){
logger.info("......got request is aurhenticated..true");
}else{
logger.info("......got request is aurhenticated..false");
}
}
@Override
public boolean supportsReturnType(MethodParameter arg0) {
logger.info("......MY ANNOTAION CALLEDD.....supportsReturnType");
return false;
}
}
创建了一个控制器来调用这样的注释
@Controller
public class MyController
{
@RequestMapping(method={RequestMethod.GET, RequestMethod.POST})
@CheckSession(isAuthenticate=true)
public ResponseEntity<String> mymethod (HttpServletRequest request)
{
///my code here....
}
}
@控制器
公共类MyController
{
@RequestMapping(方法={RequestMethod.GET,RequestMethod.POST})
@CheckSession(isAuthenticate=true)
公共响应属性mymethod(HttpServletRequest)
{
///我的代码在这里。。。。
}
}
我的applicationContext.xml文件已配置为自动组件扫描,但仍未调用我的annotations类。有人能告诉我我的错误吗。您仍然必须在应用程序上下文中配置拦截器(尽管自动扫描):
我尝试了这个方法,但它给出了**java.lang.IllegalArgumentException:不支持拦截器类型**它不是拦截器。我遇到了相同的问题:java.lang.IllegalArgumentException:不支持拦截器类型。。。有什么提示吗?@LorenzoSciuto你能试着用defaultHandler代替拦截器吗?(我已经更新了答案)
<bean id="checkSession" class="CheckSessionClass"/>
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
<property name="defaultHandler">
<ref bean="checkSession"/>
</property>
</bean>