abstractinterceptorABSTRACT POLYGONAL BACKGROUNDS什么意思

求大神指导写一个struts2拦截器判断登陆，登录后返回登录前操作

.epower.fw.interceptor; import java.util.Map; .epower.util.Constants; .opensymphony.xwork2.ActionContext; .opensymphony.xwork2.ActionInvocation; .opensymphony.xwork2.interceptor.AbstractInterceptor; public class LoginCheck extends AbstractInterceptor { private static final long serialVersionUID = 1L; private String escapeActions; public String intercept(ActionInvocation invocation) throws Exception { //取得与请求相关的ActionContext ActionContext ctx = invocation.getInvocationContext(); //取得session Map session = ctx.getSession(); String[] temp = invocation.getAction().toString().split("\."); String action = temp[temp.length-1].split("@")[0]; boolean escape=false; if(escapeActions!=null){ for(String name:escapeActions.split(",")){ if(name.equals(action)){ escape=true; break; } } } String userCode = (String)session.get(Constants.SYS_USERCODE); // System.out.println("INTERCEPTOR LOGINCHECK:"+(userCode!=null)+" USERCODE="+userCode); //没有登录返回login页面 if(escape || userCode != null ){ return invocation.invoke(); }else{ return "login"; } } public String getEscapeActions() { return escapeActions; } public void setEscapeActions(String escapeActions) { this.escapeActions = escapeActions; } }

ABSTRACT POLYGONAL BACKGROUNDS什么意思

Abstract 抽象的 polygonal 多边形的 background背景。

合起来是【抽象的多边形背景图片】 可用于PPT模板，图像和视频制作。