3

我有一个用户用于将文件上传到本地驱动器并将一些数据保存到数据库的表单。但是出现了这个错误消息，我想知道如何处理它。

   HTTP Status 400 - The request sent by the client was syntactically incorrect.

控制器

@RequestMapping(value = "/main/user/setter/addpage", method = 

RequestMethod.POST, params = "save")
public String saveProcess(@ModelAttribute("module") Module module, 

@RequestParam("userId") Integer userId, 
@RequestParam("name") String name,
@RequestParam("file") MultipartFile file, 
BindingResult result, HttpSession session) {
    if (result.hasErrors()) {
        return "redirect:/main/user/setter/settingpage";
    }
    else
    if(module != null){

         try {

             MultipartFile filea = module.getFileData();

             InputStream inputStream = null;
             OutputStream outputStream = null;
             if (filea.getSize() > 0) {
             inputStream = filea.getInputStream();
             outputStream = new FileOutputStream("C:\\Test\\"
             + filea.getOriginalFilename());
             System.out.println("Uploaded File Name");
             System.out.println(filea.getOriginalFilename());
                             int readBytes = 0;
             byte[] buffer = new byte[8192];
             while ((readBytes = inputStream.read(buffer, 0, 8192)) != 

                             -1) {
             outputStream.write(buffer, 0, readBytes);
             }
             outputStream.close();
             inputStream.close();
             session.setAttribute("success", "File Uploaded");
             session.setAttribute("uploadFile", "C:\\Test\\"
             + filea.getOriginalFilename());
             }
             } catch (Exception e) {
             e.printStackTrace();
             }

}
// Delegate to service
moduleService.add(userId, module);

return "redirect:/main/user/setter/settingpage";
    }

表格本身

 <c:url var="processUrl" value="/main/user/setter/addpage?userId=2" />
 <form:form modelAttribute="module" method="POST" action="${processUrl}" name="module" 

 enctype="multipart/form-data">

 <form:label path="fileName">Document Title:</form:label>
 <form:input path="fileName" name="name"/><br/>

 <form:label path="documentPath">Coursework Sample:</form:label>
 <form:input path="documentPath" type="file" name="file" id="file" size="43.9"/><br/>

 <form:label path="liveDate">Live Date:</form:label>
 <form:input path="liveDate"/><br/>

  <input type="submit" name="save" value="Save" id="save"/>
  <input type="submit" name="send" value="Send" id="send"/>

 </form:form>

我正在尝试先保存表单，我将使用单独的方法发送它。

4

2 回答 2

9

您的方法声明如下：

public String saveProcess(@ModelAttribute("module") Module module, 
@RequestParam("userId") Integer userId, 
@RequestParam("name") String name,
@RequestParam("file") MultipartFile file, 
BindingResult result, HttpSession session) ...

假设您正在尝试将 应用于BindingResult实例Module，您需要更改方法定义，以便BindingResult紧跟在Module实例之后。

public String saveProcess(@ModelAttribute("module") Module module,  
BindingResult result,
@RequestParam("userId") Integer userId, 
@RequestParam("name") String name,
@RequestParam("file") MultipartFile file, 
HttpSession session) ...

有关详细信息，请参阅参考

Errors 或 BindingResult 参数必须紧随正在绑定的模型对象，因为方法签名可能有多个模型对象，Spring 将为它们中的每一个创建一个单独的 BindingResult 实例 [...]

见这里。

于 2013-05-06T15:06:33.210 回答
0

错误HTTP Status 400 - The request sent by the client was syntactically incorrect.可能来自multipartResolver上下文中的缺失 ( servlet-context.xml)

`<beans:bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />`

有关更多信息，请参阅SpringMVC-FileUpload的回复- 客户端发送的请求在语法上不正确

于 2014-04-11T16:15:56.027 回答