Struts2框架下JSP向Action传值失败

[绝对密位]

user_modified.jsp
//只贴出了form部分

<form action="/account/save">
    <a onclick="unlocked()">Unlock</a>
    <label for="userid">userid: </label>
    <input type="text" name="user.userid" id="userid" value="${user.userid}" disabled><br>
    <label for="username">username: </label>
    <input type="text" name="user.username" id="username" value="${user.username}" disabled><br>
    <label for="password">password: </label>
    <input type="password" name="user.password" id="password" value="${user.password}" disabled><br>
    <c:if test="${sessionScope.identified=='1'}">
        <c:if test="${user.identified=='0'}">
            <label for="user">user: </label>
            <input type="radio" name="user.identified" value="0" id="user" checked disabled>
            <label for="manager">manager:</label>
            <input type="radio" name="user.identified" value="1" id="manager" disabled>
        </c:if>
        <c:if test="${user.identified=='1'}">
            <label for="user">user: </label>
            <input type="radio" name="user.identified" value="0" id="user" disabled>
            <label for="manager">manager:</label>
            <input type="radio" name="user.identified" value="1" id="manager" checked disabled>
        </c:if>
    </c:if>
    <c:if test="${sessionScope.identified=='0'}">
        <input type="hidden" name="user.identified" value="${user.identified}">
    </c:if>
    <br>
    <input type="submit" value="提交">
    <input type="button" value="返回" onclick="window.location.href='/account/show';">
</form>

提交到的Action
AccountAction.save()

public String save() {
	if (user.getUserid() == null) {
		return register();
	} else {
		return updateById();
	}
}

AccountAction.UpdateById()

public String updateById() {
        //在这里设断点发现就没有user这个对象
	String querySql = "SELECT * FROM tb_user WHERE user_pk_userid=?";
	String[] row = JdbcUtil.executeSQL(querySql, user.getUserid()).get(0);
	if (row != null) {
		String sql = "UPDATE tb_user SET user_username=?, user_password=?, user_identified=? WHERE user_pk_userid=?";
		String username = this.user.getUsername() == null || "".equals(this.user.getUsername().trim()) ? row[1] : this.user.getUsername();
		String password = this.user.getPassword() == null || "".equals(this.user.getPassword().trim()) ? row[2] : this.user.getPassword();
		String identified = this.user.getIdentified() == null || "".equals(this.user.getIdentified().trim()) ? row[3] : this.user.getIdentified();
		if (JdbcUtil.updateSQL(sql, username, password, identified, row[0]) == 1) {
			return "success";
		}
	}
	return "failed";
}

不知道为什么，注册都没问题，就修改信息保存的时候出现空指针异常，然后断点就发现是user对象没传过来，有谁晓得这是为啥么

[绝对密位]

引用 1楼aa562256325 的回复:

先引入user所在的包，然后new出一个新的对象，然后用set get方法获得

struts框架的话user对象应该在值栈里，action类中设置了set和get方法他应该会自动获取这个user对象，不然登录和注册为啥能成功

[李时水]

先引入user所在的包，然后new出一个新的对象，然后用set get方法获得

[vswen5]

struts2 action跳action不是这样的写法