How to Fix the 'MULTIPART_FORM_DATA: No Injection Source Found' Error in RESTful APIs?

MULTIPART_FORM_DATA: Resolving "No Injection Source Found for Parameter" Error

When attempting to upload files using a RESTful API, you may encounter the error "MULTIPART_FORM_DATA: No injection source found for a parameter of type public javax.ws.rs.core.Response." This error arises due to an issue with the JAR files used for file handling.

To resolve this:

Remove:

• jersey-multipart-1.18.jar (for Jersey 1.x)

Add:

• jersey-media-multipart-2.17
• mimepull-1.9.3 through the dependency:

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-multipart</artifactId>
    <version>2.17</version>
</dependency>

Register:

• MultiPartFeature:

  • For ResourceConfig: register(MultiPartFeature.class);
  • For web.xml:

<init-param>
    <param-name>jersey.config.server.provider.classnames</param-name>
    <param-value>org.glassfish.jersey.media.multipart.MultiPartFeature</param-value>
</init-param>

Additional Considerations:

• Update imports to use the new package names for FormDataParam and FormDataContentDisposition.
• If using Dropwizard, include dropwizard-forms and MultiPartBundle.

Other Possible Causes:

• Check for similar ModelValidationExceptions due to:

  • Invalid resource method signatures
  • Namespace issues
  • Resource class annotations
  • Dependency issues (example provided in links below)

Links for Further Reading:

• [Troubleshooting ModelValidationException](https://github.com/javaee/jersey/issues/166)
• [Resource Method Signatures](https://javabydeveloper.com/calling-rest-service-using-postman-empty-response/)
• [Namespace Issues](https://stackoverflow.com/questions/35342200/glassfish-jersey-modelvalidationexception-no-resource-annotation-found-for-the-ap)

The above is the detailed content of How to Fix the 'MULTIPART_FORM_DATA: No Injection Source Found' Error in RESTful APIs?. For more information, please follow other related articles on the PHP Chinese website!