我如何在同一请求中上传图像和数据,并具有一定的角度和还原性?

从技术上讲,您可以从 MultipartFormDataInput 例如

<form action="api/upload" method="post" enctype="multipart/form-data">
    Choose a file : <input type="file" name="file" />
    First name: <input type="text" name="firstname" />
    List name: <input type="text" name="lastname" />
    <input type="submit" value="Upload" />
</form>

@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response upload(MultipartFormDataInput multipart) throws IOException {

    try (InputStream in = multipart.getFormDataPart("file", InputStream.class, null);
         FileOutputStream fos = new FileOutputStream("file.png")) {
        byte[] buff = new byte[1024];
        int count;
        while ((count = in.read(buff)) != -1) {
            fos.write(buff, 0, count);
        }
    }

    String firstname = multipart.getFormDataPart("firstname", String.class, null);
    String lastname = multipart.getFormDataPart("lastname", String.class, null);
    return Response.ok(firstname + ":" + lastname).build();
}

如果你想把所有的东西都放到POJO中,你可以这样做

public class MyEntity {

    @FormParam("firstname")
    private String firstname;

    @FormParam("lastname")
    private String lastname;

    @FormParam("file")
    private byte[] file;

    // Getter and Setters
}

然后在资源方法中

@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response upload(@MultipartForm MyEntity entity) throws IOException {

    try (FileOutputStream fos = new FileOutputStream("file.png")) {
        byte[] filebytes = entity.getFile();
        fos.write(filebytes);
    }

    String firstname = entity.getFirstname();
    String lastname = entity.getLastname();
    return Response.ok(firstname + ":" + lastname).build();
}

查看更多:

• Multipart Providers