在文件上传期间获取 MissingServletRequestParameterException

Question

我的控制器看起来像这样

@RequestMapping (value = { "/link_multiple" } , method = 
RequestMethod.POST)
public ModelAndView linkMultipleVideo(
    @RequestParam ("csv_file") final MultipartFile file) {

这是我的 freemarker 模板

<input type="file" class="csv_file" name="csv_file"  id="csv_file" accept=".csv"/>
    <a class="file-link" href="javascript:void(0);">Choose File</a>
    <span class='input-file-select'></span>
  </div>

我还向

添加了 Multipart Resolver 配置

<bean id="multipartResolver"  class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="2097152"/>
 </bean>

还在 web.xml

中添加了以下过滤器

<filter>
    <filter-name>multipartFilter</filter-name>
    <filter-class>org.springframework.web.multipart.support.MultipartFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>multipartFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

下面是我得到的异常。

org.springframework.web.bind.MissingServletRequestParameterException: Required MultipartFile parameter 'csv_file' is not present
[tomcat:launch]     at org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValue(RequestParamMethodArgumentResolver.java:255)
[tomcat:launch]     at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:95)
[tomcat:launch]     at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:79)
[tomcat:launch]     at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:157)
[tomcat:launch]     at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:124)
[tomcat:launch]     at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)

Answer 1

我通过从 web.xml 中删除过滤器来让它工作。

<filter>
    <filter-name>multipartFilter</filter-name>
    <filter-class>org.springframework.web.multipart.support.MultipartFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>multipartFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

在文件上传期间获取 MissingServletRequestParameterException

Getting MissingServletRequestParameterException during File upload

spring

file

multipart