WEB項目:
方法1:
ApplicationContext ac1 = WebApplicationContextUtils.getRequiredWebApplicationContext(ServletContext sc)
方法2:
ApplicationContext ac2 = WebApplicationContextUtils.getWebApplicationContext(ServletContext sc)
方法3:
寫一個工具類類繼承ApplicationObjectSupport,並將這個加入到spring的容器
方法4:
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)
寫一個工具類實現ApplicationContextAware接口,並將這個加入到spring的容器
示例:
import 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
ApplicationContext ac = new FileSystemXmlApplicationContext("applicationContext.xml")
可選的操作方法有:
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
