WEB項目:
方法1:
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ApplicationContext ac1 = WebApplicationContextUtils.getRequiredWebApplicationContext(ServletContext sc)
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方法2:
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ApplicationContext ac2 = WebApplicationContextUtils.getWebApplicationContext(ServletContext sc)
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方法3:
1
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寫一個工具類類繼承ApplicationObjectSupport,並將這個加入到spring的容器
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方法4:
1
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寫一個工具類類繼承WebApplicationObjectSupport,並將這個加入到spring的容器
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方法5:(推薦)
1
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寫一個工具類實現ApplicationContextAware接口,並將這個加入到spring的容器
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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;
/**
* 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);
}
}
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非WEB項目
1
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ApplicationContext ac =
new
FileSystemXmlApplicationContext(
"applicationContext.xml"
)
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可選的操作方法有:
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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"
);
沒有classpath的話就是從當前的工作目錄
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