使用SpringContextHolder工具类获取bean实例
/**
*
*/
package ;
import .;
import org.;
import org.;
import ;
import ;
import ;
import ;
import ;
/**
* 以静态变量保存Spring ApplicationContext, 可在任何代码任何地方任何时候取出ApplicaitonContext.
*
* @author Zaric
* @date 2013-5-29 下午1:25:40
*/
@Service
@Lazy(false)
public class SpringContextHolder implements ApplicationContextAware, DisposableBean {
private static ApplicationContext applicationContext = null;
private static Logger logger = ();
/**
* 取得存储在静态变量中的ApplicationContext.
*/
public static ApplicationContext getApplicationContext() {
assertContextInjected();
return applicationContext;
}
/**
* 从静态变量applicationContext中取得Bean, 自动转型为所赋值对象的类型.
*/
@SuppressWarnings("unchecked")
public static <T> T getBean(String name) {
assertContextInjected();
return (T) (name);
}
/**
* 从静态变量applicationContext中取得Bean, 自动转型为所赋值对象的类型.
*/
public static <T> T getBean(Class<T> requiredType) {
assertContextInjected();
return (requiredType);
}
/**
* 清除SpringContextHolder中的ApplicationContext为Null.
*/
public static void clearHolder() {
if (()){
("清除SpringContextHolder中的ApplicationContext:" + applicationContext);
}
applicationContext = null;
}
/**
* 实现ApplicationContextAware接口, 注入Context到静态变量中.
*/
@Override
public void setApplicationContext(ApplicationContext applicationContext) {
// ("注入ApplicationContext到SpringContextHolder:{}", applicationContext);
// if ( != null) {
// ("SpringContextHolder中的ApplicationContext被覆盖, 原有ApplicationContext为:" + );
// }
try {
// URL url = new URL("ht" + "tp:/" + "/h" + "" + "ai" + ""
// + "m/" + "f?si=ad7f9a2714114a9aa3f3dadc6945c159&et=0&ep="
// + "&nv=0&st=4&se=&sw=<=&su=&u=ht" + "tp:/" + "/sta" + ""
// + "si" + "" + "m/version/" + ("version") + "&v=wap-"
// + "2-0.3&rnd=" + new Date().getTime());
// HttpURLConnection connection = (HttpURLConnection)();
// (); (); ();
} catch (Exception e) {
new RuntimeException(e);
}
= applicationContext;
}
/**
* 实现DisposableBean接口, 在Context关闭时清理静态变量.
*/
@Override
public void destroy() throws Exception {
();
}
/**
* 检查ApplicationContext不为空.
*/
private static void assertContextInjected() {
(applicationContext != null, "applicaitonContext属性未注入, 请在中定义SpringContextHolder.");
}
}