【可以为null的字段但是在jsp上必须要填入所有参数 _JSP 】

可以为null的字段但是在jsp上必须要填入所有参数
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回答(0)
JSP
详细描述
错误截图
源码
<form action="${pageContext.request.contextPath}/regist" class="form-horizontal" role="form" method="post">
    <div class="form-group">
        <label for="username" class="col-sm-2 control-label">*username</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="username" name="username"
                    placeholder="用户名：8-16位英文数字">
        </div>
    </div>
    <div class="form-group">
        <label for="password" class="col-sm-2 control-label">*password</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="password" name="password"
                    placeholder="输入密码">
        </div>
    </div>
    <div class="form-group">
        <label for="email" class="col-sm-2 control-label">*email</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="email" name="email"
                     placeholder="输入邮箱">
        </div>
    </div>
    <div class="form-group">
        <label for="name" class="col-sm-2 control-label">*name</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="name" name="name"
                    placeholder="输入姓名">
        </div>
    </div>
    <%--<div class="form-group">--%>
        <%--<label for="sex" class="col-sm-2 control-label">sex</label>--%>
        <%--<div class="col-sm-2">--%>
            <%--<input type="text" class="form-control" id="sex" name="sex"--%>
                   <%--VALUE="" placeholder="输入性别">--%>
        <%--</div>--%>
    <%--</div>--%>
    <div class="form-group">
        <label for="introduce" class="col-sm-2 control-label">*introduce</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="introduce" name="introduce"
                    placeholder="输入个人介绍">
        </div>
    </div>
    <div class="form-group">
        <label for="status" class="col-sm-2 control-label">*status</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="status" name="status"
                    placeholder="输入在学状态">
        </div>
    </div>
    <div class="form-group">
        <label for="major" class="col-sm-2 control-label">major</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="major" name="major"
                   placeholder="输入主修">
        </div>
    </div>
    <div class="form-group">
        <label for="classes" class="col-sm-2 control-label">classes</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="classes" name="classes"
                    placeholder="输入课程">
    </div>
    </div>
    <div class="form-group">
        <label for="QQ" class="col-sm-2 control-label">QQ</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="QQ" name="QQ"
                    placeholder="输入QQ">
        </div>
    </div>
    <div>
    <input type="submit" name="提交">
    </div>
</form>



@RequestMapping(value = "/regist", method = RequestMethod.POST)
    public ModelAndView regist(User user) {
        System.out.println("注册");
        ModelAndView mav = new ModelAndView();
        String prompt;
        String str = user.getUsername();
        String pas = user.getPassword();
        User user1 = new User();
        //正则匹配
        boolean confirmU = Verification.regexUsername(str);
        boolean confirmP = Verification.regexPassword(pas);
        if (confirmU) {
            try {
                user1 = userService.findByUsername(str);
            } catch (Exception e) {
                e.printStackTrace();
            }
            if (user1 == null) {
        //表示通用唯一标识符(UUID)的类。UUID表示一个128位的值
        UUID uuid = UUID.randomUUID();
        String salt = uuid.toString().substring(10);
                System.out.println("salt"+salt);
        //进行SHA加密
        pas = SHA.getResult(pas);

        user.setSalt(salt);
        //进行salt加密
        pas = SHA.getSHAwithSalt(pas,salt);
        //存入加密后的密码
        user.setPassword(pas);
                System.out.println("密码"+pas);
                userService.regist(user);
                //注册成功后跳转index.jsp页面
                prompt = "注册成功";
            } else {
                prompt = "注册失败,用户名已存在";
                logger.info("注册失败,用户名已存在");
            }
        } else {
            prompt = "注册失败,账号格式不对";
            logger.info("账号格式不对");
        }
        mav.addObject("prompt", prompt);
        mav.setViewName("prompt");
        return mav;
    }
编辑于2024-05-14