无法使用 Jersey 实现简单的文件上传。应用程序引导时引发的缺少依赖项错误：
The following errors and warnings have been detected with resource and/or provider classes:
SEVERE: Missing dependency for method public javax.ws.rs.core.Response com.foo.MyResource.uploadFile(java.io.InputStream,com.sun.jersey.core.header.FormDataContentDisposition) at parameter at index 0
SEVERE: Missing dependency for method public javax.ws.rs.core.Response com.foo.MyResource.uploadFile(java.io.InputStream,com.sun.jersey.core.header.FormDataContentDisposition) at parameter at index 1
SEVERE: Method, public javax.ws.rs.core.Response com.foo.uploadFile(java.io.InputStream,com.sun.jersey.core.header.FormDataContentDisposition), annotated with POST of resource, class com.foo.FS2Resource, is not recognized as valid resource method.
unavailable
com.sun.jersey.spi.inject.Errors$ErrorMessagesException
at com.sun.jersey.spi.inject.Errors.processErrorMessages(Errors.java:170)
将输入参数映射到 REST 服务似乎存在问题？我已经阅读了文档并遵循了几个示例，并且我并没有偏离这些示例。
这是代码：
@Path("v1/")
public class FileUploadResource {
@POST
@Path("upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces({MediaType.APPLICATION_JSON})
public Response uploadFile(
@FormDataParam("file") InputStream is,
@FormDataParam("file") FormDataContentDisposition detail) {
String name = detail.getFileName();
// do upload stuff
String output = ....
return Response.status(200).entity(output).build();
}
}
我为 FormDataParams 引入了“compile 'com.sun.jersey.contribs:jersey-multipart:1.17.1'”。
编辑：我能够让它在泽西岛工作，但只能以这种更原始的方式：
@POST
@Path("upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.TEXT_PLAIN)
public Response uploadFile(final MimeMultipart file) {
if (file == null) {
return Response.status(Response.Status.BAD_REQUEST).entity("Must supply a valid file").build();
try {
for (int i = 0; i < file.getCount(); i++) {
// ... do something with file.getBodyPart(i));
}
return Response.ok("done").build();
} catch (final Exception e) {
return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(e).build();
}
}
这可能是一个足够的解决方法，但仍想深入了解问题的根源。