Java spring MVC—客户端发送的请求在语法上不正确

我正在制作一个java spring mvc web应用程序

我的get请求：

@RequestMapping(value = "/newAssignment", method = RequestMethod.GET)
public ModelAndView newAssignment(ModelAndView model) throws IOException {
    Assignment newAssignment = new Assignment();
    model.addObject("assignment", newAssignment);
    model.setViewName("upload");
    return model;
}

我的表格：

<form:hidden path="assignmentId"/>
        <tr>
            <td>Title:</td>
            <td><form:input path="title" /></td>
        </tr>
        <tr>
            <td>Description:</td>
            <td><form:input path="description" /></td>
        </tr>
        <tr>
            <td>Author:</td>
            <td><form:input path="author" /></td>
        </tr>
        <tr>
            <td>Level</td>
            <td><form:input path="level" /></td>
        </tr>
                    <tr>
            <td>Region</td>
            <td><form:input path="region" /></td>
        </tr>
            <tr>
                <td>
                    <input type="file" path="path"/>
                </td>
            </tr>
        <tr>
            <td colspan="2" align="center"><input type="submit" value="Save"></td>
        </tr>

我的实施：

@Override
public void saveOrUpdate(Assignment assignment, HttpSession session) {
    System.out.println("insert");

    //insert
        String sql = "INSERT INTO `Library`.`Assignments` "
                + "(`title`, `description`, `path`, `level`, `Author`, `region`) "
                + "VALUES (?, ?, ?, ?, ?, ?);";
        System.out.println(assignment.getTitle());
        jdbcTemplate.update(sql,
                assignment.getTitle(),
                assignment.getDescription(), 
                assignment.getPath(), 
                assignment.getLevel(), 
                assignment.getAuthor(), 
                assignment.getRegion());

}

我有一种强烈的感觉，那是因为我的作者应该是一个用户对象，我的区域应该是一个区域对象，我的级别应该是一个级别对象

如何在html中执行此操作？我能在别的地方做吗？这些古老的技术带给我的是：

type Status report

messageBad Request

descriptionThe request sent by the client was syntactically incorrect.

---

您是否从

get

端点或

POST

端点获取错误？POST，我可以获取页面，填写信息，然后尝试POST，然后我获取错误。您应该查看浏览器开发工具（例如Firebug），找到正在发送的确切

POST

请求。那么应该很清楚为什么它与您的端点不匹配。

type Status report

messageBad Request

descriptionThe request sent by the client was syntactically incorrect.