问题描述
我有一个带弹簧的Web应用程序,我在其中进行一些文件上传。在eclipse下,使用Jetty(maven插件),它完美无缺。但是当我在Tomcat下部署应用程序时,它没有,我得到以下异常:
I have a web application with spring in which I do some file upload. Under eclipse, using Jetty (the maven plugin) it works perfectly. But when I deploy the application under Tomcat it does not and I get the following Exception :
org.springframework.web.bind.MissingServletRequestParameterException: Required org.springframework.web.multipart.MultipartFile parameter 'file' is not present
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodInvoker.raiseMissingParameterException(AnnotationMethodHandlerAdapter.java:545)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveRequestParam(HandlerMethodInvoker.java:336)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:207)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:132)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:326)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:313)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
这是我的表格:
<form method="post" action="../admin/import.html" id="import"
enctype="multipart/form-data">
<div id="importInmates" align="center">
<input type="file" name="file" id="file"
data-dojo-type="dijit.form.Button"
label="<fmt:message key='import.file' />" />
<button data-dojo-type="dijit.form.Button" id="importInmates"
type="submit">
<fmt:message key="import.import" />
</button>
</div>
<input type="hidden" name="importType" value="inmates" />
</form>
以下是截取方法:
@RequestMapping(value = IMPORT_PAGE, method = RequestMethod.POST)
public String recieveFile(@RequestParam("importType") String importType,
@RequestParam("file") MultipartFile multipartFile, final HttpSession session)
{
if (multipartFile.getSize() < 0)
{
LOGGER.debug("No file has been uploaded");
return "redirect:.." + IMPORT_PAGE;
}
File file = new File("tmp");
try
{
multipartFile.transferTo(file);
BufferedReader lec = new BufferedReader(new FileReader(file));
LOGGER.debug(lec.readLine());
lec.close();
}
catch (Exception e)
{
LOGGER.error("An exception occured while reading " + importType + " file", e);
}
return "redirect:.." + IMPORT_PAGE;
}
我添加了以下bean:
I have added the following bean :
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="100000000"></property>
</bean>
在applicationContext.xml和mvc-servlet.xml中,即使我认为只有后者很重要。
both in applicationContext.xml and mvc-servlet.xml even if I think that only the latter is important.
任何帮助都将不胜感激。
Any help would be appreciated.
谢谢。
推荐答案
感谢@Bart我找到了以下简单的解决方案:
Thanks to @Bart I was able to find the following simple solution :
在截取方法中,使用@ ModelAttribute而不是@RequestParam:
In the intercepting method, use @ModelAttribute instead of @RequestParam :
@RequestMapping(value = IMPORT_PAGE, method = RequestMethod.POST)
public String recieveFile(@RequestParam("importType") String importType,
@ModelAttribute("file") UploadedFile uploadedFile, final HttpSession session)
{
MultipartFile multipartFile = uploadedFile.getFile();
其中UploadedFile是以下类:
Where UploadedFile is the following class :
public class UploadedFile
{
private String type;
private MultipartFile file;
public String getType()
{
return type;
}
public void setType(String type)
{
this.type = type;
}
public void setFile(MultipartFile file)
{
this.file = file;
}
public MultipartFile getFile()
{
return file;
}
}
它正在工作!!
感谢大家的帮助。
这篇关于文件上传在Jetty下工作,但不在Tomcat下工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!