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51 lines (42 loc) · 1.13 KB
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package com.caozj.taglib;
import javax.servlet.jsp.PageContext;
import javax.servlet.jsp.tagext.BodyTagSupport;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
/**
* 父标签 主要是取到Spring的ApplicationContext容器，方便获取Bean引用
*
* @author caozj
*
*/
public class SuperTag extends BodyTagSupport {
private static final long serialVersionUID = -4948632853691953405L;
private ApplicationContext context;
public ApplicationContext getContext() {
return context;
}
@Override
public void setPageContext(PageContext pageContext) {
super.setPageContext(pageContext);
context = WebApplicationContextUtils.getRequiredWebApplicationContext(pageContext.getServletContext());
}
/**
* 取Bean实例
*
* @param <T>
* @param clazz
* @return
*/
public <T> T getBean(Class<T> clazz) {
return getContext().getBean(clazz);
}
/**
* 取Bean实例
*
* @param beanId
* @return
*/
public Object getBean(String beanId) {
return getContext().getBean(beanId);
}
}