WEB项目:
方法1:
1 | ApplicationContext ac1 = WebApplicationContextUtils.getRequiredWebApplicationContext(ServletContext sc) |
方法2:
1 | ApplicationContext ac2 = WebApplicationContextUtils.getWebApplicationContext(ServletContext sc) |
方法3:
1 | 写一个工具类类继承ApplicationObjectSupport,并将这个加入到spring的容器 |
方法4:
1 | 写一个工具类类继承WebApplicationObjectSupport,并将这个加入到spring的容器 |
方法5:(推荐)
1 | 写一个工具类实现ApplicationContextAware接口,并将这个加入到spring的容器 |
示例:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | import java.util.Map; import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; /** * 获取ApplicationContext和Object的工具类 * @author yzl * */ @SuppressWarnings ({ "rawtypes" , "unchecked" }) public class SpringContextUtils implements ApplicationContextAware { private static ApplicationContext applicationContext; public void setApplicationContext(ApplicationContext arg0) throws BeansException { applicationContext = arg0; } /** * 获取applicationContext对象 * @return */ public static ApplicationContext getApplicationContext(){ return applicationContext; } /** * 根据bean的id来查找对象 * @param id * @return */ public static Object getBeanById(String id){ return applicationContext.getBean(id); } /** * 根据bean的class来查找对象 * @param c * @return */ public static Object getBeanByClass(Class c){ return applicationContext.getBean(c); } /** * 根据bean的class来查找所有的对象(包括子类) * @param c * @return */ public static Map getBeansByClass(Class c){ return applicationContext.getBeansOfType(c); } } |
非WEB项目
1 | ApplicationContext ac = new FileSystemXmlApplicationContext( "applicationContext.xml" ) |
可选的操作方法有:
1 2 3 4 5 6 7 8 9 10 11 | 一: String[] path={ "WebRoot/WEB-INF/applicationContext.xml" , "WebRoot/WEB-INF/applicationContext_task.xml" }; ApplicationContext context = new FileSystemXmlApplicationContext(path); 二: String path= "WebRoot/WEB-INF/applicationContext*.xml" ; ApplicationContext context = new FileSystemXmlApplicationContext(path); 三: ApplicationContext ctx = new FileSystemXmlApplicationContext( "classpath:地址" ); 没有classpath的话就是从当前的工作目录 |