[英]Spring mvc: HTTP Status 400 - Required MultipartFile parameter 'file' is not present
This is my controller: 这是我的控制器:
@RequestMapping(value = "/admin/users/photo", method = RequestMethod.POST)
public ModelAndView editUser(@RequestParam("file") MultipartFile file,
Principal principal) {
// code never gets here
}
my mvc-dispatcher-servlet.xml 我的mvc-dispatcher-servlet.xml
<bean id="multipartResolver"
class="org.springframework.web.multipart.support.StandardServletMultipartResolver">
</bean>
pom.xml: pom.xml:
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
form itself: 形式本身:
<form action="${pageContext.request.contextPath}"
method="POST"
enctype="multipart/form-data">
<input type="file"
name="file"
/>
<input type="submit" value="Добавить">
</form>
This is what browser says: 这是浏览器说的:
How to fix that? 如何解决?
You can try to use this 您可以尝试使用此
<bean id="multipartResolver" class="**org.springframework.web.multipart.commons.CommonsMultipartResolver**" />
instead of 代替
<bean id="multipartResolver"
class="org.springframework.web.multipart.support.StandardServletMultipartResolver">
Servlet 3.0 specification. Servlet 3.0规范。
StandardServletMultipartResolver is Standard implementation of the {@link MultipartResolver} interface StandardServletMultipartResolver是{@link MultipartResolver}接口的标准实现
http://grepcode.com/file/repo1.maven.org/maven2/org.springframework/spring-web/4.1.1.RELEASE/org/springframework/web/multipart/support/StandardServletMultipartResolver.java#StandardServletMultipartResolver http://grepcode.com/file/repo1.maven.org/maven2/org.springframework/spring-web/4.1.1.RELEASE/org/springframework/web/multipart/support/StandardServletMultipartResolver.java#StandardServletMultipartResolver
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