Spring MVC file upload - Unable to process parts a

问题:

So I'm a newbie to Spring and I'm trying to get file upload working for my project (I'm using Spring Tool Suite btw.) and when submitting a form all I'm getting is:

HTTP Status 500 - Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: Unable to process parts as no multi-part configuration has been provided

Stack trace from browser:

type Exception report

message Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: Unable to process parts as no multi-part configuration has been provided

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: Unable to process parts as no multi-part configuration has been provided
    org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:100)
    org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.(StandardMultipartHttpServletRequest.java:78)
    org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:75)
    org.springframework.web.multipart.support.MultipartFilter.doFilterInternal(MultipartFilter.java:108)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)
root cause

java.lang.IllegalStateException: Unable to process parts as no multi-part configuration has been provided
    org.apache.catalina.connector.Request.parseParts(Request.java:2676)
    org.apache.catalina.connector.Request.getParts(Request.java:2643)
    org.apache.catalina.connector.RequestFacade.getParts(RequestFacade.java:1083)
    org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:85)
    org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.(StandardMultipartHttpServletRequest.java:78)
    org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:75)
    org.springframework.web.multipart.support.MultipartFilter.doFilterInternal(MultipartFilter.java:108)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)

note The full stack trace of the root cause is available in the Apache Tomcat/8.0.27 logs.

This is the form tag in jsp:

<form:form class="form-horizontal" role="form" method="post"
            action="newArtist.html" modelAttribute="artist" enctype="multipart/form-data">

Input part:

<div class="form-group">
    <div class="col-lg-3">
        <label for="photo">Artist photo:</label>
        <form:input type="file" id="photo" path="photo"></form:input>
    </div>
</div>

Photo is stored in this field in Artist object:

@Lob
private byte[] photo;

Controller mapping methods:

@RequestMapping(value = "/newArtist", method = RequestMethod.GET)
public String showAddArtistForm(Model model)
{
    model.addAttribute("artist", new Artist());
    return "newArtist";
}

@RequestMapping(value = "/newArtist", method = RequestMethod.POST)
public String addArtist(@ModelAttribute("artist") @Valid Artist artist, BindingResult result,
        @RequestParam("photo") MultipartFile photo) throws IOException
{   
    if (result.hasErrors())
        return "newArtist";

    if(photo.getBytes() != null)
        artist.setPhoto(photo.getBytes());

    artistService.addArtist(artist);

    return "redirect:artists.html";
}

Multipart resolver configuration in servlet-context.xml:

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="10000000"/>
</bean>

Filters in web.xml:

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

Dependencies:

<!-- Apache Commons FileUpload -->
    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.1</version>
    </dependency>

    <!-- Apache Commons IO -->
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
    </dependency>

I also imported Tomcat's config file context.xml to META-INF/context.xml and edited Context tag like so:

<Context allowCasualMultipartParsing="true">

Nothing seems to be working, any help will be greatly appreciated.

回答1:

Actually you don't need any filter on the web.xml in order to upload your multipart file with Spring MVC. I've the same configuration in my project and it worked (${spring.version} = 4.3.4.RELEASE):

POM

     <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <!-- Apache Commons FileUpload -->
    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.2</version>
    </dependency>

    <!-- Apache Commons IO -->
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.5</version>
    </dependency>

HTML

    <form method="POST" enctype="multipart/form-data" action="uploadAction">
        <table>
            <tr><td>File to upload:</td><td><input type="file" name="file" /></td></tr>
            <tr><td></td><td><input type="submit" value="Upload" /></td></tr>
        </table>
    </form>

Spring context

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="10000000"/>
</bean>

Spring controller

@PostMapping("/uploadAction")
    public String handleFileUpload(@RequestParam("file") MultipartFile file,
            RedirectAttributes redirectAttributes) {

        File out = new File("outputfile.pdf");
        FileOutputStream fos = null;

        try {
            fos = new FileOutputStream(out);

            // Writes bytes from the specified byte array to this file output stream 
            fos.write(file.getBytes());
            System.out.println("Upload and writing output file ok");
        } catch (FileNotFoundException e) {
            System.out.println("File not found" + e);
        } catch (IOException ioe) {
            System.out.println("Exception while writing file " + ioe);
        } finally {
            // close the streams using close method
            try {
                if (fos != null) {
                    fos.close();
                }
            } catch (IOException ioe) {
                System.out.println("Error while closing stream: " + ioe);
            }

            //storageService.store(file);
            redirectAttributes.addFlashAttribute("message",
                    "You successfully uploaded " + file.getOriginalFilename() + "!");

            return "redirect:/";
        }
    }

回答2:

It is straight forward from the exception that no multi-part configuration is found. Though you have provided multipartResolver bean.

The problem is that while specifying the MultipartFilter before the Spring Security filter, It tries to get the multipartResolver bean but can't find it. Because it expect the bean name/id as filterMultipartResolver instead of multipartResolver.

Do yourself a favor. Please change the bean configuration like following -

<bean id="filterMultipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="10000000"/>
</bean>

回答3:

I have something similar, but what i did is just send a file without mapping it with any attribute in my model, in your case i would modify this:

<div class="form-group">
    <div class="col-lg-3">
        <label for="photo">Artist photo:</label>
        <input type="file" id="photo" name="file"/>
    </div>
</div>

In your controller

@RequestMapping(value = "/newArtist", method = RequestMethod.POST)
public String addArtist(@ModelAttribute("artist") @Valid Artist artist, BindingResult result,
    @RequestParam("file") MultipartFile file) throws IOException
//Here read the file and store the bytes into your photo attribute
...

回答4:

None of the answers address the issue properly. As per Tomcat documentation, on the configuration of allowCasualMultipartParsing:

Set to true if Tomcat should automatically parse multipart/form-data request bodies when HttpServletRequest.getPart* or HttpServletRequest.getParameter* is called, even when the target servlet isn't marked with the @MultipartConfig annotation (See Servlet Specification 3.0, Section 3.2 for details). Note that any setting other than false causes Tomcat to behave in a way that is not technically spec-compliant. The default is false.

So, what's the compliant way? Reading the official JEE 6 tutorial gives a hint. If you want to use a spec-compliant way with Servlet 3 or newer, your servlet must have a MultipartConfig. You have three choices, depending on how you configure your servlet:

• With programmatic configuration: context.addServlet(name, servlet).setMultipartConfig(new MultipartConfigElement("your_path").
• With annotations, annotate the servlet's class with @javax.servlet.annotation.MultipartConfig.

• With XML configuration, add this to the WEB-INF/web.xml descriptor, in the section of your servlet:

  <multipart-config>
       <location>/tmp</location>
       <max-file-size>20848820</max-file-size>
       <max-request-size>418018841</max-request-size>
       <file-size-threshold>1048576</file-size-threshold>
  </multipart-config>
  

回答5:

Add In your config file as:

@Bean(name = "multipartResolver")
public CommonsMultipartResolver CanBeAnyName() { 
//configuration

}

回答6:

Had the same issue in a Spring Boot application, this exceptions occur several times:

• org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is
• java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field multipartFile exceeds its maximum permitted size of 1048576 bytes

org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field multipartFile exceeds its maximum permitted size of 1048576 bytes.

Get rid of the tomcat exception with this, with copy catting from http://www.mkyong.com/spring-boot/spring-boot-file-upload-example/

Tomcat large file upload connection reset. Need to let {@link #containerCustomizer()} work properly, other wise exception will occur several times, RequestMapping for uploadError will fail.

@Bean
public TomcatEmbeddedServletContainerFactory tomcatEmbedded() {

    TomcatEmbeddedServletContainerFactory tomcat = new TomcatEmbeddedServletContainerFactory();

    tomcat.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> {
        if ((connector.getProtocolHandler() instanceof AbstractHttp11Protocol<?>)) {
            //-1 means unlimited
            ((AbstractHttp11Protocol<?>) connector.getProtocolHandler()).setMaxSwallowSize(-1);
        }
    });

    return tomcat;

}

回答7:

If you are using Tomcat 8.
Configure the following in Tomcat's conf/context.xml

• Add allowCasualMultipartParsing="true" attribute to context node
• Add <Resources cachingAllowed="true" cacheMaxSize="100000" /> inside context node