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手動獲取spring的ApplicationContext和bean對象

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WEB項目:

方法1:

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1ApplicationContext ac1 = WebApplicationContextUtils.getRequiredWebApplicationContext(ServletContext sc)

方法2:

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1ApplicationContext ac2 = WebApplicationContextUtils.getWebApplicationContext(ServletContext sc)

方法3:

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1寫一個工具類類繼承ApplicationObjectSupport,並將這個加入到spring的容器

方法4:

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1寫一個工具類類繼承WebApplicationObjectSupport,並將這個加入到spring的容器

方法5:(推薦)

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1寫一個工具類實現ApplicationContextAware接口,並將這個加入到spring的容器

示例:

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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354import java.util.Map;import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;
/** * 獲取ApplicationContext和Object的工具類 * @author yzl * */@SuppressWarnings({ "rawtypes", "unchecked" })public class SpringContextUtils implements ApplicationContextAware { private static ApplicationContext applicationContext; public void setApplicationContext(ApplicationContext arg0)
throws BeansException { applicationContext = arg0; } /** * 獲取applicationContext對象 * @return */ public static ApplicationContext getApplicationContext(){ return applicationContext; } /** * 根據bean的id來查找對象 * @param id * @return */ public static Object getBeanById(String id){ return applicationContext.getBean(id); } /** * 根據bean的class來查找對象 * @param c * @return */ public static Object getBeanByClass(Class c){ return applicationContext.getBean(c); } /** * 根據bean的class來查找所有的對象(包括子類) * @param c * @return */ public static Map getBeansByClass(Class c){ return applicationContext.getBeansOfType(c); }}

非WEB項目

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1ApplicationContext ac = new FileSystemXmlApplicationContext("applicationContext.xml")

可選的操作方法有:

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1234567891011一: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");沒有classpath的話就是從當前的工作目錄

手動獲取spring的ApplicationContext和bean對象