巧用struts2的拦截器记日志
巧用struts2的拦截器记日志
1：Struts.xml配置
<!--定义一个拦截器-->
<package name="test" namespace="/test/ " extends="struts-default">
<!-- 终端用户记录日志拦截器 -->
<interceptors>
<interceptor name="userLogInterceptor" method="login">
<result name="success"> /main.jsp</result>
<!-- userLogInterceptor 的调用-->

<interceptor-ref name="userLogStack" />
<interceptor-ref name="token">
<param name="includeMethods">
login
</param>
</interceptor-ref>
</action>

2. userLogInterceptor的实现

1.public class UserLogInterceptor implements Interceptor
2.{
3.private static final long serialVersionUID = 8301888377710974306L;
4.
5.
6.
7.private UserLogService userLogService;
8.
9. public void setUserLogService(UserLogService userLogService)
10.{
11.this.userLogService = userLogService;
12.}
13.
14.public void destroy()
15.{
16.// TODO Auto-generated method stub
17.
18.}
19.
20.public void init()
21.{
22.// TODO Auto-generated method stub
23.
24.}
25.
26.public String intercept(ActionInvocation invocation) throws Exception
27.{
28. HttpServletRequest request = ServletActionContext.getRequest();
29. //invocation.invoke()是放行的意思，等action中的方法执行完成后，会再次返回过来，actionResultString为action中返回的值，如success
30. String actionResultString = invocation.invoke();
31.
32.// 重复提交则不记录日志
33.if ("invalid.token".equalsIgnoreCase(actionResultString))
34.{
35.return actionResultString;
36.}
37.
38.UserLogBean userLogBean = new UserLogBean();
39.userLogBean.setOperatorName(request.getParameter("userName"));
40.userLogBean.setLogType(request.getParameter("logType"));
41.userLogBean.setTargetName(request.getParameter("targetName"));
42.String logDate = Toolkit.getCurrentTime("yyyy-MM-dd HH:mm:ss");
43.userLogBean.setTime(logDate);
44.userLogBean.setResult(actionResultString);
45.
46.// 获取action值栈的中result的信息
47.ValueStack vs = (ValueStack) request.getAttribute("struts.valueStack");
48.Object resultObj = vs.findValue("result");
49.if (null == resultObj)
50.{
51.userLogBean.setDesc("");
52.}
53.else
54.{
55.userLogBean.setDesc(resultObj.toString());
56.}
57.
58.try{
59. // 日志记录到数据库中
60. userLogService.addUserLog(userLogBean);
61. }
62.catch (Exception e)
63. {
64.
65. }
66.
67.return actionResultString;
68.}
69.
70.}
71.