方法一

package com.hsh.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
@Component
public class SpringContexts implements ApplicationContextAware {

private static ApplicationContext context;

public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
SpringContexts.context = applicationContext;
}

public static ApplicationContext getContext() {
return context;
}

/**
* 获取spring 管理的bean
* @param name
* @param requiredType
* @return
*/
public static <T> T getBean(String name, Class<T> requiredType) {
return context.getBean(name, requiredType);
}

public static Object getBean(String beanName) {
return context.getBean(beanName);
}

}

方法二

//解决service为null无法注入问题
BeanFactory factory = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getServletContext());
userOpenidService = (UserOpenidService) factory.getBean("userOpenidService");

获取session和request

/**
* 取request
* @return
*/
public static HttpServletRequest getRequest () {
HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();
return request;
}
/**
* 取Session
* @return
*/
public static HttpSession getSession () {
HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();
return request.getSession();
}