使用 Jersey 2 上传文件

Question

我需要使用 Jersey 2 通过 rest 调用上传二进制文件

我写了以下内容class:

@Path("/entry-point")
public class EntryPoint {

    @POST
    @Path("/upload")
    @Consumes(MediaType.APPLICATION_OCTET_STREAM)
    public String uploadStream( InputStream payload ) throws IOException
    {
        while(true) {
            try {
                DataInputStream dis = new DataInputStream(payload);
                System.out.println(dis.readByte());
            } catch (Exception e) {
                break;
            }
        }
        //Or you can save the inputsream to a file directly, use the code, but must remove the while() above.
        /**
         OutputStream os =new FileOutputStream("C:\recieved.jpg");
         IOUtils.copy(payload,os);
         **/
        System.out.println("Payload size="+payload.available());
        return "Payload size="+payload.available();
    }

}

当我尝试执行以下操作时：

curl --request POST --data-binary "@file.txt" http://localhost:8080/entry-point/upload

我收到以下回复：

<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"/>
<title>Error 415 </title>
</head>
<body>
<h2>HTTP ERROR: 415</h2>
<p>Problem accessing /entry-point/up. Reason:
<pre>    Unsupported Media Type</pre></p>
<hr /><a href="http://eclipse.org/jetty">Powered by Jetty:// 9.3.6.v20151106</a><hr/>
</body>
</html>

我哪里错了？

Answer 1

您应该使用 MediaType.MULTIPART_FORM_DATA 向 Jersey 表明您将要接收的是一个文件。另外，你还得 'hint' jersey 哪个领域应该是你想看的。更正后的版本为：

 @Consumes(MediaType.MULTIPART_FORM_DATA)
 public String uploadStream( @FormDataParam("file") InputStream payload ) throws IOException {

请注意，MediaType.APPLICATION_OCTET_STREAM 是通用 MediaType。如需更详细的解释检查：Do I need Content-Type: application/octet-stream for file download?

Answer 2

我已决定删除 @Consumes 注释。

像这样

public String uploadStream(InputStream payload) throws IOException {}

Answer 3

服务器端看起来不错。添加错误中所述的内容 mime 类型为我解决了问题：

-H 'Content-Type: application/octet-stream'

使用 Jersey 2 上传文件

Upload File with Jersey 2

java

rest

file-upload

jersey-2.0