如何编写一个接受二进制文件的 Restful Web 服务 (pdf)

问题描述

我正在尝试用 Java 编写一个安静的 Web 服务，它需要一些字符串参数和一个二进制文件 (pdf) 参数.

I'm trying to write a restful web service in java that will take a few string params and a binary file (pdf) param.

我了解如何处理字符串，但我对二进制文件很着迷.有什么想法/例子吗?

I understand how to do the strings but I'm getting hung up on the binary file. Any ideas / examples?

这是我目前所拥有的

@GET
@ConsumeMime("multipart/form-data")
@ProduceMime("text/plain")
@Path("submit/{client_id}/{doc_id}/{html}/{password}")
public Response submit(@PathParam("client_id") String clientID,
                   @PathParam("doc_id") String docID,
                   @PathParam("html") String html,
                   @PathParam("password") String password,
                   @PathParam("pdf") File pdf) {
  return Response.ok("true").build();
}

自从我发布了这个，包含答案的链接已被删除，所以这是我的实现.

Since I've posted this the link that had the answer has been removed, so here is my implementation.

@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.TEXT_PLAIN)
@Path("submit")
public Response submit(@FormDataParam("clientID") String clientID,
                   @FormDataParam("html") String html,
                   @FormDataParam("pdf") InputStream pdfStream) {

    try {
        byte[] pdfByteArray = DocUtils.convertInputStreamToByteArrary(pdfStream);
    } catch (Exception ex) {
        return Response.status(600).entity(ex.getMessage()).build();
    }
}


...

public static byte[] convertInputStreamToByteArrary(InputStream in) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    final int BUF_SIZE = 1024;
    byte[] buffer = new byte[BUF_SIZE];
    int bytesRead = -1;
    while ((bytesRead = in.read(buffer)) > -1) {
        out.write(buffer, 0, bytesRead);
    }
    in.close();
    byte[] byteArray = out.toByteArray();
    return byteArray;
}

推荐答案

@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.TEXT_PLAIN)
@Path("submit")
public Response submit(@FormDataParam("clientID") String clientID,
                   @FormDataParam("html") String html,
                   @FormDataParam("pdf") InputStream pdfStream) {

    try {
        byte[] pdfByteArray = DocUtils.convertInputStreamToByteArrary(pdfStream);
    } catch (Exception ex) {
        return Response.status(600).entity(ex.getMessage()).build();
    }
}


...

public static byte[] convertInputStreamToByteArrary(InputStream in) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    final int BUF_SIZE = 1024;
    byte[] buffer = new byte[BUF_SIZE];
    int bytesRead = -1;
    while ((bytesRead = in.read(buffer)) > -1) {
        out.write(buffer, 0, bytesRead);
    }
    in.close();
    byte[] byteArray = out.toByteArray();
    return byteArray;
}

这篇关于如何编写一个接受二进制文件的 Restful Web 服务 (pdf)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！