struts2拦截器的例子

Question

小弟刚学 希望能给个登录拦截的详细例子

Answer 1

1. <interceptors>
<interceptor name="SessionInterceptor" class="bank.action.interceptor.SessionInterceptor"/>
</interceptors>
2.package bank.action.interceptor;import java.util.Map;import bank.domain.UserInfo;import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;@SuppressWarnings("serial")
public class SessionInterceptor extends AbstractInterceptor { private static final Object LOGIN_KEY = "user"; public static final String LOGIN_PAGE = "loginPage"; @Override
public String intercept(ActionInvocation actionInvocation) throws Exception {
Map session = actionInvocation.getInvocationContext().getSession();
UserInfo userInfo = (UserInfo) session.get(LOGIN_KEY);
// 如果session中有userInfo对象说明是已登录用户
if (userInfo != null) {
return actionInvocation.invoke();
} else {
return LOGIN_PAGE;
}
}
}
拦截到方法

Answer 2

http://developer.51cto.com/art/200906/126894.htm