Spring 在非controller獲取HttpServletRequest對象、獲取注解類和URI

@Service
@AllArgsConstructor
public class TestServiceImpl implements TestService {

    private final ApplicationContext applicationContext;

    @Override
    public String test(String str) {
        ServletRequestAttributes attributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
        HttpServletRequest httpServletRequest = attributes.getRequest();
        String requestURI = httpServletRequest.getRequestURI();

        Map<RequestMappingInfo, HandlerMethod> handlerMethodMap = applicationContext.getBean(RequestMappingHandlerMapping.class).getHandlerMethods();
        Set<String> anonymousUrls = new HashSet<>();
        for (Map.Entry<RequestMappingInfo, HandlerMethod> infoEntry : handlerMethodMap.entrySet()) {
            HandlerMethod handlerMethod = infoEntry.getValue();
            AnonymousAccess anonymousAccess = handlerMethod.getMethodAnnotation(AnonymousAccess.class); //注解類
            if (null != anonymousAccess) {
                anonymousUrls.addAll(infoEntry.getKey().getPatternsCondition().getPatterns());
            }
        }
        System.err.println(anonymousUrls);
        return "成功====》"+str+"<>"+requestURI;
    }
}

 獲取spring上下文

package com.xxx;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.stereotype.Component;

@SuppressWarnings("unchecked")
@Component
public class SpringUtils implements BeanFactoryPostProcessor {

    private static ConfigurableListableBeanFactory beanFactory; // Spring應用上下文環境

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
        SpringUtils.beanFactory = beanFactory;
    }

    /**
     * 獲取對象
     *
     * @param name
     * @return Object 一個以所給名字注冊的bean的實例
     * @throws BeansException
     *
     */
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) throws BeansException {
        //首字母默認小寫
        name=lowerCaseInit(name);
        if (containsBean(name)) {
            return (T) beanFactory.getBean(name);
        }else{
            return null;
        }
    }

    /**
     * 獲取類型為requiredType的對象
     *
     * @param clz
     * @return
     * @throws BeansException
     *
     */
    public static <T> T getBean(Class<T> clz) throws BeansException {
        @SuppressWarnings("unchecked")
        T result = (T) beanFactory.getBean(clz);
        return result;
    }

    /**
     * 如果BeanFactory包含一個與所給名稱匹配的bean定義，則返回true
     *
     * @param name
     * @return boolean
     */
    public static boolean containsBean(String name) {
        return beanFactory.containsBean(name);
    }

    /**
     * 判斷以給定名字注冊的bean定義是一個singleton還是一個prototype。
     * 如果與給定名字相應的bean定義沒有被找到，將會拋出一個異常（NoSuchBeanDefinitionException）
     *
     * @param name
     * @return boolean
     * @throws NoSuchBeanDefinitionException
     *
     */
    public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
        return beanFactory.isSingleton(name);
    }

    /**
     * @param name
     * @return Class 注冊對象的類型
     * @throws NoSuchBeanDefinitionException
     *
     */
    public static Class<?> getType(String name) throws NoSuchBeanDefinitionException {
        return beanFactory.getType(name);
    }

    /**
     * 如果給定的bean名字在bean定義中有別名，則返回這些別名
     *
     * @param name
     * @return
     * @throws NoSuchBeanDefinitionException
     *
     */
    public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
        return beanFactory.getAliases(name);
    }

    /**
     *首字母小寫
     * @return:  小寫的首字母
     */

    private static String lowerCaseInit(String str) {
        if (str.length()>0) {
            char c = str.charAt(0);
            if (c >= 65 && c <= 90) {
                int i = c + 32;
                return ((char)i)+str.substring(1);
            }else{
                return str;
            }
        }else{
            return  null;
        }
    }
}

 

package xxx.utils;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;


@Slf4j
@Component
public class SpringContextHolder implements ApplicationContextAware, DisposableBean {

    private static ApplicationContext applicationContext = null;

    /**
     * 從靜態變量applicationContext中取得Bean, 自動轉型為所賦值對象的類型.
     */
    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) {
        assertContextInjected();
        return (T) applicationContext.getBean(name);
    }

    /**
     * 從靜態變量applicationContext中取得Bean, 自動轉型為所賦值對象的類型.
     */
    public static <T> T getBean(Class<T> requiredType) {
        assertContextInjected();
        return applicationContext.getBean(requiredType);
    }

    /**
     * 檢查ApplicationContext不為空.
     */
    private static void assertContextInjected() {
        if (applicationContext == null) {
            throw new IllegalStateException("applicaitonContext屬性未注入, 請在applicationContext" +
                    ".xml中定義SpringContextHolder或在SpringBoot啟動類中注冊SpringContextHolder.");
        }
    }

    /**
     * 清除SpringContextHolder中的ApplicationContext為Null.
     */
    private static void clearHolder() {
        log.debug("清除SpringContextHolder中的ApplicationContext:"
                + applicationContext);
        applicationContext = null;
    }

    @Override
    public void destroy(){
        SpringContextHolder.clearHolder();
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringContextHolder.applicationContext != null) {
            log.warn("SpringContextHolder中的ApplicationContext被覆蓋, 原有ApplicationContext為:" + SpringContextHolder.applicationContext);
        }
        SpringContextHolder.applicationContext = applicationContext;
    }
}