一、今日完成

1.把MD5加密、cookie、session、登录验证等写成工具类，以便controller调用相应方法；

（1）

package com.pudica.task05.utils;

import sun.misc.BASE64Encoder;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * Created by gl1687 on 2017/10/8.
 */

@SuppressWarnings("restriction")
public class MD5Encryption {
    public static String EncoderByMd5(String str) throws NoSuchAlgorithmException, UnsupportedEncodingException{
        //确定计算方法
        MessageDigest md5=MessageDigest.getInstance("MD5");
        BASE64Encoder base64en = new BASE64Encoder();
        //加密后的字符串
        String newstr=base64en.encode(md5.digest(str.getBytes("utf-8")));
        return newstr;
    }

    public static boolean checkpassword(String newpasswd,String oldpasswd) throws NoSuchAlgorithmException, UnsupportedEncodingException{
        if(EncoderByMd5(newpasswd).equals(oldpasswd))
            return true;
        else
            return false;
    }
}

（2）

package com.pudica.task05.utils;

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

/**
 * Created by gl1687 on 2017/10/8.
 */
public class CookieUtils {

    public static void addCookie(HttpServletResponse response, Cookie cookie){
        response.addCookie(cookie);
        return ;
    }

    public static void addCookie(HttpServletResponse response, String cookieName,
                                 String cookieValue, String cookieDomain, String cookiePath,
                                 int maxAge, boolean secure){
        if (cookieName != null && !cookieName.equals("")){
            if (cookieValue == null){
                cookieValue = "";
            }

            Cookie newCookie = new Cookie(cookieName, cookieValue);
            if (cookieDomain != null)
                newCookie.setDomain(cookieDomain);

            if (maxAge > 0)
                newCookie.setMaxAge(maxAge);

            newCookie.setSecure(secure);

            if (cookiePath != null)
                newCookie.setPath(cookiePath);
            else
                newCookie.setPath("/");

            addCookie(response, newCookie);
        }
    }


    public static void addCookie(HttpServletResponse response, String cookieName,
                                 String cookieValue, String cookieDomain){
        addCookie(response, cookieName, cookieValue, cookieDomain, "/", 60, false);
    }


    public static Cookie getCookie(HttpServletRequest request, String cookieName){
        Cookie[] cookies = request.getCookies();

        if (cookieName == null || cookieName.equals("") || cookies == null)
            return null;

        for (Cookie cookie : cookies) {
            if (cookieName.equals(cookie.getName()))
                return (Cookie)cookie;
        }

        return null;
    }


    public static String getCookieValue(HttpServletRequest request, String cookieName){
        Cookie cookie = getCookie(request, cookieName);

        if (cookie == null)
            return null;
        else{
            return cookie.getValue();
        }

    }

    public static void deleteCookie(HttpServletResponse response, Cookie cookie){
        if (cookie != null){
            cookie.setPath("/");
            cookie.setMaxAge(0);
            cookie.setValue(null);
        }

        response.addCookie(cookie);
    }


    public static void deleteCookieByName(HttpServletRequest request,
                                          HttpServletResponse response, String cookieName){
        Cookie cookie = getCookie(request, cookieName);
        if (cookie != null && cookie.getName().equals(cookieName))
            deleteCookie(response, cookie);
    }


    public static void editCookie(HttpServletRequest request, HttpServletResponse response,
                                  String cookieName, String cookieValue, String cookieDomain){
        Cookie cookie = getCookie(request, cookieName);

        if (cookie != null && cookieName != null && !cookieName.equals("") &&
                cookie.getName().equals(cookieName)){
            addCookie(response, cookieName, cookieValue, cookieDomain);
        }
    }
}

（3）

package com.pudica.task05.utils;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Created by gl1687 on 2017/10/8.
 */
public class SessionInterceptor  implements HandlerInterceptor{

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        //基于cookie的session认证
        String isLogin = (String) request.getSession().getAttribute("isLogin");

        if (isLogin != null && isLogin.equals("true")){
            return true;
        }
        request.getRequestDispatcher("/WEB-INF/login.jsp").forward(request, response);
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }

    }

（4）

package com.pudica.task05.utils;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Created by gl1687 on 2017/10/8.
 */
public class SimpleInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        Log.loggerCreate(LogLevel.ERROR, "-------------------------preHandle----------------------");

        //获取cookie中的值
        String username = CookieUtils.getCookieValue(request, "username");
        String loginTime = CookieUtils.getCookieValue(request, "loginTime");
        String encry = CookieUtils.getCookieValue(request, "encry");

        if (username != null && loginTime != null) {
            if (encry.equals(MD5Encryption.EncoderByMd5("["+ username+"$"+"]" + loginTime)))
                return true;
        }

        request.getRequestDispatcher("/WEB-INF/login.jsp").forward(request, response);
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
                           ModelAndView modelAndView) throws Exception {
        Log.loggerCreate(LogLevel.ERROR, "-------------------------postHandle----------------------");

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
        Log.loggerCreate(LogLevel.ERROR, "-------------------------afterCompletion----------------------");
    }

}

（5）

package com.pudica.task05.utils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.UnsupportedEncodingException;
import java.security.NoSuchAlgorithmException;

/**
 * Created by gl1687 on 2017/10/8.
 */
public class AutoAuthenticate {

    public static void cookieAuthenticate(HttpServletResponse response, String username,
                                          String loginTime) throws NoSuchAlgorithmException, UnsupportedEncodingException {
        String encryCookieValue1 = MD5Encryption.EncoderByMd5(username);
        String encryCookieValue2 = MD5Encryption.EncoderByMd5("" + loginTime);

        String encryCookieValue3 = MD5Encryption.EncoderByMd5("[" + encryCookieValue1 + "$" + "]" + encryCookieValue2);

        // 生成cookie
        CookieUtils.addCookie(response, "username", encryCookieValue1, null);
        CookieUtils.addCookie(response, "loginTime", encryCookieValue2, null);
        CookieUtils.addCookie(response, "encry", encryCookieValue3, null);
    }

    public static void sessionAuthenticate(HttpServletRequest request){
        HttpSession session = request.getSession();
        session.setAttribute("isLogin", "true");
        session.setMaxInactiveInterval(60);
    }
}

2.在spring-config.xml中对拦截器进行配置

<!-- 拦截器相关配置 -->
<mvc:interceptors>
    <mvc:interceptor>
        <mvc:mapping path="/u/profession"/>
        <bean class="com.pudica.task05.utils.SimpleInterceptor"/>
    </mvc:interceptor>
    <mvc:interceptor>
        <mvc:mapping path="/u/test"/>
        <bean class="com.pudica.task05.utils.SessionInterceptor"/>
    </mvc:interceptor>
</mvc:interceptors>

二、明日计划

继续编写controller层和view组件，完成任务5。

三、遇到问题

在前段时间把任务涉及的基础知识梳理和学习了一遍，但是具体结合task4的代码进行应用时候，对于如何调用何种方法，以及如何在不同组件间进行协作不是很明白，所以借鉴了师兄的代码进行复现。虽然加快了任务进度，但是有些知识点并未弄懂为何要这样使用，因此还得仔细琢磨。

四、收获

以上。

禅道进度：http://task.ptteng.com/zentao/task-view-10377.html

任务5延期一天至10月9日完成。