Struts2 自定义拦截器 二则

Struts2 自定义拦截器 二则
异常拦截器:

package org.roadway.lm.util;



import org.apache.log4j.Logger;



import com.opensymphony.xwork2.ActionInvocation;

import com.opensymphony.xwork2.interceptor.AbstractInterceptor;



/**

* @author Huyvanpull

*

*/

@SuppressWarnings("serial")

public class ExceptionInterceptor extends AbstractInterceptor

{

    private Logger logger = Logger.getLogger(ExceptionInterceptor.class);

   

    private String interceptorName;

   

    @Override

    public String intercept(ActionInvocation invocation) throws Exception

    {

        this.logger.debug("进入" + this.getInterceptorName());

        String result = null;

        try

        {

            result = invocation.invoke();

        }

        catch (Exception exception)

        {

            this.logger.error(this.getExceptionInfo(exception));

            throw exception;

        }

        return result;

    }

   

    private String getExceptionInfo(Exception exception)

    {

        StringBuffer bExceptionInfo = new StringBuffer();

        bExceptionInfo.append(exception.toString());

        bExceptionInfo.append("\n\t");

       

        StackTraceElement[] stackTraceElements = exception.getStackTrace();

        for (int i = 0; i < stackTraceElements.length; i++)

        {

            bExceptionInfo.append("[" + this.getInterceptorName() + "] "

                    + stackTraceElements[i].toString() + "\n\t");

        }

        return bExceptionInfo.toString();

    }

   

    public String getInterceptorName()

    {

        return interceptorName;

    }

   

    public void setInterceptorName(String interceptorName)

    {

        this.interceptorName = interceptorName;

    }

   

}




登陆检查拦截器:

package org.roadway.lm.util;



import java.util.Map;



import org.apache.log4j.Logger;

import org.roadway.lm.po.UserInfo;

import org.roadway.lm.user.action.UserInfoAction;



import com.opensymphony.xwork2.Action;

import com.opensymphony.xwork2.ActionInvocation;

import com.opensymphony.xwork2.interceptor.AbstractInterceptor;



/**

* @author tom_hui

*

*/

@SuppressWarnings("serial")

public class LoginCheckerInterceptor extends AbstractInterceptor

{

    private String userSessionKey = "userInfo";

   

    private String isCheckLogin   = "true";

   

    private Logger logger         = Logger

                                          .getLogger(LoginCheckerInterceptor.class);

   

    @SuppressWarnings("unchecked")

    public String intercept(ActionInvocation actionInvocation) throws Exception

    {

        Object action = actionInvocation.getAction();

       

        /** 如果设置拦截器不检查登陆 */

        if ("false".equalsIgnoreCase(isCheckLogin))

        {

            actionInvocation.invoke();

        }

        /** 如果是登陆Action,放其通行 */

        if (action instanceof UserInfoAction)

        {

            this.logger.info("登陆Action:" + UserInfoAction.class.getName());

            return actionInvocation.invoke();

        }

       

        /** 从session中得到UserInfo的信息 */

        Map session = actionInvocation.getInvocationContext().getSession();

        UserInfo userInfo = (UserInfo) session.get(userSessionKey);

       

        /** 如果Session中存在UserInfo对象 */

        if (userInfo != null)

        {

            this.logger.info("用户" + userInfo.getUserName() + "("

                    + userInfo.getUserId() + ")登陆了.");

            return actionInvocation.invoke();

           

        }

        /** 如果没有登陆 */

        else

        {

            return Action.LOGIN;

        }

    }

   

    public String getUserSessionKey()

    {

        return userSessionKey;

    }

   

    public void setUserSessionKey(String userSessionKey)

    {

        this.userSessionKey = userSessionKey;

    }

   

    public String getIsCheckLogin()

    {

        return isCheckLogin;

    }

   

    public void setIsCheckLogin(String isCheckLogin)

    {

        this.isCheckLogin = isCheckLogin;

    }

   

}