403 forbidden每当我尝试GET从数据库中获取用户信息时，都会收到-error 消息。关于下面的代码，每当我尝试通过按Ajax测试按钮尝试请求时，它都无法运行并给我发出警报，但是在控制台中也给我一个403 Forbidden-error。我不确定是否与Spring安全性有关？

用户JSP页面：

<table>
    <tr>
        <td>User Id</td>
        <td>Full Name</td>
        <td>Username</td>
        <td>Email</td>
        <td>Date of Birth</td>
        <td>User Authority</td>
        <td>Update </td>
        <td>Delete</td>
    </tr>
    <c:forEach var="user" items="${users}">
        <tr>
            <td><c:out value="${user.id}" /></td>
            <td><c:out value="${user.name}"/></td>
            <td><c:out value="${user.username}"/></td>
            <td><c:out value="${user.email}"/></td>
            <td><c:out value="${user.dob}"/></td>
            <td><c:out value="${user.authority}"/></td>
            <td>
                <a id="update" href="<c:url value="/viewUser"><c:param name="id" value="${user.id}"/></c:url>"><button>Update</button></a>
            </td>
            <td>
                <a id="delete" href="<c:url value="/deleteUser"><c:param name="id" value="${user.id}"/></c:url>"><button>Delete</button></a>
            </td>
            <td>
                <button class="loadUser" name="id" value="${user.id}">Ajax test</button>
            </td>
        </tr>
    </c:forEach>
</table>
 <div id="personIdResponse"> </div>
<script type="text/javascript">
    $(document).ready(function(){
        $(".loadUser").click(function(e) {
            e.preventDefault();
            var personId = +$(this).val();
            $.get('${pageContext.request.contextPath}/SDP/ajaxTest/' + personId, function(user) {
                  $('#personIdResponse').text(user.name + ', = username ' + user.username);
                })
            .fail(function(user){
                alert('Could not load user');
            });
        });
    });
</script>

用户控制器类：

    @RequestMapping("/viewUser")
public String updateUser(Model model, @RequestParam(value = "id", required = false) Integer id) {

    User user = usersService.getUser(id);

    model.addAttribute("user", user);

    return "settings";
}

@RequestMapping("/ajaxTest")
@ResponseBody
public User ajaxTest(@RequestParam(value = "id", required = false) Integer id) {

    User user = usersService.getUser(id); 
    return user;
}