一、今日完成

1.完成并提交任务5；

2.把MD5加密作为工具类，在controller层组件里响应处理“regist”请求，调用加密算法；

public class MD5Util {

    public static String stringToMD5(String string){
        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        //计算md5函数
        md.update(string.getBytes());
        //digest()最后确定返回md5 hash值，返回值为8位zifuc，
        // 因为md5 hash值是16位的hex值，实际上就是8位的字符
        //BigInteger函数则将8位的字符串转换成16位的hex值，用字符串来表示：得到字符串形式的hash值
        return new BigInteger(1,md.digest()).toString(16);
    }
}

  //注册页面
    @RequestMapping(value = "regist",method = RequestMethod.GET)
    public String regist(){
        return "regist";
    }

    @RequestMapping(value = "registto",method = RequestMethod.POST)
    public String register(@ModelAttribute("user")User  user){
        String md5= MD5Util.stringToMD5(user.getUsername()+user.getPasswd());
        userService.insert(user.getUsername(),md5);
        log.info("----->"+user.getUsername()+md5);
        return "ok";
    }
}

3，客户端提交注册请求（post方法），在数据库创建该用户并生成存储相应加密后的passwd；

user表里id字段为primary key，需要设置为自增长，否则点击“注册”后，向数据库插入数据操作失败，产生500错误。

4.把拦截器作为工具类，在controller层组件里响应处理客户端“登录”请求，调用相关方法把客户端提交的name与passwd和数据库中进行对比，满足条件后提示登录成功，并跳转到相应页面；

public class LoginInterceptor  implements HandlerInterceptor {

   Logger log = Logger.getLogger(LoginInterceptor.class);

    @Resource
    private UserService userService;

    //preHandle此方法是进行处理器拦截用的,顾名思义,该方法将在controller处理之前调用
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {

        Cookie[] cookie = httpServletRequest.getCookies();
        if (cookie != null) {
            for (int i = 0; i < cookie.length; i++) {
                if (cookie[i].getName().equals("token")) {
                    String token = cookie[i].getValue();
                    byte[ ] tk = TypeUtil.hexStringToByte(token);

                    byte[ ] tk1 = DES.decrypt(tk,"12345678");
                    System.out.println("sfsdfsdfsdfsdf----------:"+tk1.toString());
                    String tk2 = new String(tk1);
                    log.info("======"+tk1);

                    String id = "";
                    String time = "";
                    for (int j = 0; j < tk2.length(); j++) {
                        char c = tk2.charAt(j);
                        if (c == '=') {
                            for (int k = j + 1; k < tk2.length(); k++)
                                time = time + tk2.charAt(k);
                            break;
                        }
                        id = id + c;
                    }
                    if (userService.select(Long.parseLong(id)) != null) {

                        return true;
                    }
                }
            }
        }
        httpServletRequest.getSession();
        String contextpath = httpServletRequest.getScheme() + "://" + httpServletRequest.getServerName() + ":" + httpServletRequest.getServerPort() + httpServletRequest.getContextPath();
        String uri = contextpath + "/login";
        httpServletResponse.sendRedirect(uri);
        return true;
    }
    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

    }
}

//登录页面
@RequestMapping(value = "login",method = RequestMethod.GET)
public String login(){
    return "login";
}
//登录失败页面
@RequestMapping(value = "no",method = RequestMethod.GET)
public String no(){
    return "no";
}
//登录处理
@RequestMapping(value = "login",method = RequestMethod.POST)
public void loginaction(@RequestParam("username") String username, @RequestParam("passwd") String passwd,  HttpServletResponse httpServletResponse) {
    String md5= MD5Util.stringToMD5(username+passwd);
    if(userService.verification(username,md5)){
        //待加密内容
        long id=userService.selectByName(username).getId();
        long creatDate=new Date().getTime();
        String str = id+"="+creatDate;
        //加密操作
        byte[ ] result =  DES.encrype(str.getBytes() ,"12345678");
        //把加密的字节转换为16进制
        String resules= TypeUtil.bytesToHexString(result);
        Cookie cookie = new Cookie("token",resules);
        cookie.setMaxAge(60*60*24*7);//保留7天
        httpServletResponse.addCookie(cookie);
        try {
            httpServletResponse.sendRedirect("home");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }else {
        try {
            httpServletResponse.sendRedirect("no");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

二、明日计划

1.了解JMeter和memcache的使用方法和处理机制；

2.学习redis相关基础知识；

三、遇到问题

目前对spring框架的一些功能不熟悉，盲目去学习高大上的代码实例，结果遇到问题自己没法解决束手无策，导致任务进度一致卡壳，无谓的浪费了时间和精力。目前，还是应该以完成任务为主，一步步实现基本的功能后再去拓展和丰富代码。教训比较深刻。

四、收获

以上。

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