Question

Struts2拦截器实现记录用户所有操作到DB的功能？

对所有action写一个拦截器，当用户在前台操作时，拦截器能监控用户所有操作的action，操作时间，IP地址 ；并且调用一个监听的action方法，将获取的内容存入数据库中。。。求解高手指导，拦截器如何写？
SSH框架，action采用的注解方式

Answer 1

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<!-- START SNIPPET: xworkSample -->
<struts>
<package name="account" extends="struts-default">
<interceptors>
<interceptor name="checkLoginStatusInterceptor"
class="com.gntchina.account.interceptor.CheckLoginStatusInterceptor">
</interceptor>
<interceptor-stack name="loginDefaultStack">
<interceptor-ref name="checkLoginStatusInterceptor"></interceptor-ref>
<interceptor-ref name="defaultStack"></interceptor-ref>
</interceptor-stack>
</interceptors>
<default-interceptor-ref name="loginDefaultStack"></default-interceptor-ref>

<action name="account"
class="com.gntchina.account.action.LoginAction" method="login">
<interceptor-ref name="defaultStack"></interceptor-ref>
<result name="success">/welcome.jsp</result>
<result name="input">/login.jsp</result>
</action>
</package>
<package name="">
</package>
<package name="default" extends="tiles-default">
<action name="home">
<result name="success" type="tiles">AccountDefault</result>
</action>
</package>
</struts>

--------java代码------

package com.gntchina.account.interceptor;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.*;
import org.apache.struts2.StrutsStatics;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

import com.gntchina.util.Validation;
import com.gntchina.account.key.*;
import com.gntchina.account.service.*;
import com.gntchina.account.action.LoginAction;

public class CheckLoginStatusInterceptor extends AbstractInterceptor {

private static final long serialVersionUID = 741301329154812993L;

public static final String LOGIN = "login";
public static final String LOGIN_PAGE = "account";

public String intercept(ActionInvocation actionInvocation) throws Exception {
// 对LoginAction不做该项拦截
Object action = actionInvocation.getAction();
if (action instanceof LoginAction) {
return actionInvocation.invoke();
}
// 检查Cookies中是否存在LOGIN_HASH_KEY
// 确认它是否有效
HttpServletRequest request= (HttpServletRequest) actionInvocation.getInvocationContext().get(StrutsStatics.HTTP_REQUEST);
if (checkCookieLoginFlag(request)){
return actionInvocation.invoke();
}
return LOGIN_PAGE;
}

/*
* 获取LOGIN_HASH_KEY
* 并检查数据库中是否有此HashCode
*/
private boolean checkCookieLoginFlag(HttpServletRequest req) {
String s = getCookieLoginFlag(req);
AccountsService accountsService = new AccountsService();
return !Validation.isEmpty(s) && accountsService.checkLoginStatus(s);
}

private String getCookieLoginFlag(HttpServletRequest req){
String r = null;
Cookie[] cookies = req.getCookies();
if (cookies!=null) {
for (Cookie s: cookies){
if (CookieKey.LOGIN_HASH_KEY.equals(s.getName()))
r = s.getValue();
}
}
return r;
}

}

-------这个是以前做得一个登录拦截器。。。

Answer 2

如果你会写拦截器的话
你这样做
拦截你有所对数据库操作的ACTION 或者是ACTION的方法 这个拦截器都可以实现 你在拦截器里面写 写入数据库的信息

Answer 3

为什么用监听 感觉AOP更适合

追问

需要获取IP

追答

那你调用另一个action方法也获取不到呀 没有request对象

追问

Struts应该能获取到吧？高手能想到方法解决不？