WEB项目:
方法1:
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ApplicationContext ac1 = WebApplicationContextUtils.getRequiredWebApplicationContext(ServletContext sc) |
方法2:
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ApplicationContext ac2 = WebApplicationContextUtils.getWebApplicationContext(ServletContext sc) |
方法3:
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写一个工具类类继承ApplicationObjectSupport,并将这个加入到spring的容器 |
方法4:
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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)
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写一个工具类实现ApplicationContextAware接口,并将这个加入到spring的容器 |
示例:
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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
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ApplicationContext ac = new FileSystemXmlApplicationContext( "applicationContext.xml" )
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可选的操作方法有:
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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 |