WebApplicationContextUtils 可以获取
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WebApplicationContext
WebApplicationContext 可以获取bean,然后执行方法获取数据。
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package
cn.sccl.common.web;
import
java.util.List;
import
java.util.Map;
import
javax.servlet.ServletContext;
import
javax.servlet.ServletContextEvent;
import
javax.servlet.ServletContextListener;
import
org.apache.commons.logging.Log;
import
org.apache.commons.logging.LogFactory;
import
org.springframework.context.ApplicationContext;
import
org.springframework.web.context.ContextLoaderListener;
import
org.springframework.web.context.support.WebApplicationContextUtils;
import
cn.sccl.common.service.BizCodeManager;
import
cn.sccl.common.web.util.Log4jWebConfigurer;
import
cn.sccl.pms.model.Division;
import
cn.sccl.pms.model.DivisionQuery;
import
cn.sccl.pms.service.DivisionManager;
public
class
StartupListener
extends
ContextLoaderListener
implements
ServletContextListener {
@Override
public
void
contextInitialized(ServletContextEvent event) {
super
.contextInitialized(event);
ServletContext context = event.getServletContext();
//获取servletContext
//也可以在实现了HttpServlet接口中获取，ServletContext servletContext = this.getServletContext();
setupContext(context);
}
protected
void
setupContext(
final
ServletContext context) {
// WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);
//推荐使用这种，因为getRequiredWebApplicationContext要求servletContext中必须要有ApplicationContext
ApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext(context);
// 行政区划
DivisionManager divisionManager = (DivisionManager) ctx.getBean(
"divisionManager"
);
//得到manager
List<Division> divisions = divisionManager.query(
new
DivisionQuery());
//将数据放入ServletContext 页面中就在application中获取，因为application和servletContext对应
context.setAttribute(
"divisions"
, divisions);
}
}
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本文转自建波李 51CTO博客，原文链接：http://blog.51cto.com/jianboli/1890712，如需转载请自行联系原作者
