package com.common.core.utils;
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import javax.servlet.http.HttpServletRequest;
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import org.springframework.beans.BeansException;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.ApplicationContextAware;
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import org.springframework.core.env.Environment;
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import org.springframework.stereotype.Component;
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import org.springframework.web.context.request.RequestContextHolder;
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import org.springframework.web.context.request.ServletRequestAttributes;
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@Component
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public class SpringContextUtils implements ApplicationContextAware {
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/**
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* 上下文对象实例
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*/
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private static ApplicationContext applicationContext;
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public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
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SpringContextUtils.applicationContext = applicationContext;
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}
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/**
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* 获取applicationContext
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*
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* @return
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*/
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public static ApplicationContext getApplicationContext() {
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return applicationContext;
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}
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/**
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* 获取HttpServletRequest
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*/
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public static HttpServletRequest getHttpServletRequest() {
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return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
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}
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public static String getOrigin(){
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HttpServletRequest request = getHttpServletRequest();
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return request.getHeader("Origin");
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}
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/**
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* 通过name获取 Bean.
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*
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* @param name
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* @return
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*/
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public static Object getBean(String name) {
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return getApplicationContext().getBean(name);
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}
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/**
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* 通过class获取Bean.
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*
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* @param clazz
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* @param <T>
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* @return
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*/
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public static <T> T getBean(Class<T> clazz) {
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return getApplicationContext().getBean(clazz);
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}
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/**
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* 通过name,以及Clazz返回指定的Bean
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*
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* @param name
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* @param clazz
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* @param <T>
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* @return
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*/
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public static <T> T getBean(String name, Class<T> clazz) {
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return getApplicationContext().getBean(name, clazz);
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}
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public static String getEnvParam(String key){
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Environment env = getBean(Environment.class);
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return env.getProperty(key);
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}
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}
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