java - 使用 Jax-Rs 上的注释 Post 发送和不发送文件

Question

我正在开发 Jax-Rs 服务，我必须创建带有或不带有文件的内容。

 @POST
    @Path("makesomething")
    @Consumes(MediaType.MULTIPART_FORM_DATA)
    @Produces(MediaType.TEXT_PLAIN)
       public String makesomething(@FormDataParam("file") InputStream uploadedInputStream, @FormDataParam("file") FormDataContentDisposition fileDetail, @FormDataParam("variable") String variable, @Context HttpServletRequest request) throws IOException {
        //make something
        }

如果我不发送文件，我会收到一条错误消息，指出有必要发送文件。如何在不发送文件的情况下完成此操作？

Answer 1

安德烈是对的，这样的东西应该可以正常工作(假设当您不上传文件时，您只是发布表单数据):

@POST
@Path("makesomething")
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.TEXT_PLAIN)
public String makesomething(@FormDataParam("file") InputStream uploadedInputStream, @FormDataParam("file") FormDataContentDisposition fileDetail, @FormDataParam("variable") String variable, @Context HttpServletRequest request) throws IOException {
    makeSomethingImpl(uploadedInputStream, fileDetail, variable, request);
}

@POST
@Path("makesomething")
@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
@Produces(MediaType.TEXT_PLAIN)
public String makesomething(@FormDataParam("variable") String variable, @Context HttpServletRequest request) throws IOException {
    makeSomethingImpl(null, null, variable, request);
}

private String makeSomethingImpl(final InputStream uploadedInputStream, final FormDataContentDisposition fileDetail, final String variable, final HttpServletRequest request) {
    // make something
}