Encountering a 400 error while trying to implement file upload feature in Spring AngularJS -

Question

Encountering a 400 error while trying to implement file upload feature in Spring AngularJS -

Whenever I attempt to upload a file using Spring and AngularJS, I keep encountering the dreaded 400 Bad Request error:

> error: "Bad Request"
> exception: "org.springframework.web.multipart.support.MissingServletRequestPartException"
> message: "Required request part 'file' is not present."
> path:"/project/ffl/newDocument

Despite diligently studying various examples on how to implement this feature (#1, #2, #3, #4, #5, and more), and meticulously following each one, I am still stuck with the persisting 400 error.

Here's the details of my request:

Any assistance or guidance would be greatly appreciated.

javascript java angularjs spring spring-mvc

Answer 1

Answer №1

1. In order to update the Spring Controller, modify the method as shown below:

    RequestMapping(value = "/newDocument", method = RequestMethod.POST)
    public @ResponseBody Object uploadFiles(MultipartHttpServletRequest request, HttpServletResponse response) throws IOException {
        
        Iterator<String> iterator = request.getFileNames();
        MultipartFile multipartFile = null;
        while (iterator.hasNext()) {
            multipartFile = request.getFile(iterator.next());
            //do something with the file.....
        }
    }

2. Update your Angular controller with the following code:

    console.log(files[0]);
    $http.post( '/myEndpoint', formData, {
        headers: { 'Content-Type': undefined },
        transformRequest: angular.identity
    }).success(function (result) {
        console.log('Success');
    }).error(function () {
        console.log('Failure');
    });

3. Make sure you have installed the Dependency named:

commons-fileupload

4. Insert this bean into your servlet-configuration.xml file:

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

Answer 2

1. In order to update the Spring Controller, modify the method as shown below:

    RequestMapping(value = "/newDocument", method = RequestMethod.POST)
    public @ResponseBody Object uploadFiles(MultipartHttpServletRequest request, HttpServletResponse response) throws IOException {
        
        Iterator<String> iterator = request.getFileNames();
        MultipartFile multipartFile = null;
        while (iterator.hasNext()) {
            multipartFile = request.getFile(iterator.next());
            //do something with the file.....
        }
    }

2. Update your Angular controller with the following code:

    console.log(files[0]);
    $http.post( '/myEndpoint', formData, {
        headers: { 'Content-Type': undefined },
        transformRequest: angular.identity
    }).success(function (result) {
        console.log('Success');
    }).error(function () {
        console.log('Failure');
    });

3. Make sure you have installed the Dependency named:

commons-fileupload

4. Insert this bean into your servlet-configuration.xml file:

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

Encountering a 400 error while trying to implement file upload feature in Spring AngularJS -

Answer №1

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