问题
Walking through the RESTEasy Guide 4.4.0-final from jboss. Having the examples to guide be as well.
Wanting to create a small service where you post a binary-file with some metadata. In this particular case I would like to post a file + 'the owner of that file'.
In my first effort I am using the following construct (1st-attempt-server).
@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(@FormDataParam("file") InputStream is,
@FormDataParam("file") FormDataContentDisposition fileDetail) {
Map<String, String> map = fileDetail.getParameters();
}
I am able to save the file, but the only information I can get from 'fileDetail' is the filename. The client ('1st-attempt-client') calling '1st-attempt-server' looks like this:
public void uploadFile() throws IOException, URISyntaxException {
String endpoint = "http://localhost:8080/Uploadv03/rest/upload";
String filePath = "/tmp/testimage.jpg";
File file = new File(filePath);
FileBody fileBody = new FileBody(file,ContentType.DEFAULT_BINARY);
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
builder.addPart("file", fileBody);
String owner="me-myself";
builder.addTextBody("owner", owner, ContentType.TEXT_PLAIN);
HttpEntity entity = builder.build();
HttpPost request = new HttpPost(endpoint);
request.setEntity(entity);
HttpClient client = HttpClientBuilder.create().build();
try {
HttpResponse response = client.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
System.out.println("statuscode "+statusCode);
} catch (IOException e) {
e.printStackTrace();
}
}
Looking into the map in the server, that map only gives me 2-key-pairs and those are (name=file and filename=testimage.jpg) -it seems that I cannot fetch the 'owner'-attribute.
In my second effort I am using the following construct (2nd-attempt-server). I am sure that I have used this construct before, couple of years ago.
@POST
@Path("/load")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response external(@MultipartForm FileUploadForm form) throws IOException {
logger.info("the 'load'-endpoint ");
}
the supporting file:FileuploadForm looks like this (with getters/setters)
public class FileUploadForm implements Serializable {
private static final long serialVersionUID = 1L;
public FileUploadForm() {
}
@FormParam("selectedFile")
@PartType("application/octet-stream")
private byte[] file;
@FormParam("owner")
private String owner;
getters/setters
}
The client ('2nd-attempt-client') calling '2nd-attempt-server' looks like this:
private void post() throws FileNotFoundException, IOException {
System.out.println("PostClient2\n");
String endpoint = "http://localhost:8080/Uploadv03/rest/upload";
String owner = "me-myself";
String filename = "naming-the-file";
String filePath = "/tmp/testimage.jpg"
File file = new File(filePath);
FileInputStream inputStream = new FileInputStream(file);
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost uploadFile = new HttpPost(URL);
MultipartEntityBuilder builder= MultipartEntityBuilder.create();
builder.addTextBody("owner", owner, ContentType.TEXT_PLAIN);
builder.addBinaryBody("file", inputStream);
HttpEntity multipart = builder.build();
uploadFile.setEntity(multipart);
HttpResponse response = null;
try {
response = httpClient.execute(uploadFile);
} catch (IOException ex) {
System.err.println("Unable to make connection");
}
int statusCode = response.getStatusLine().getStatusCode();
System.out.println("Statuscode "+statusCode);
}
Now I am getting HTTPS status 415 as a response.
The second server, what is lacking in the client-side code? It does not seem to matter if I change to this
builder.addBinaryBody("selectedFile", inputStream);
I do like the second approach here using a POJO, I am deploying the code in Tomcat 8. Surely the jersey-code would be sufficient here, I have seen some other dependencies as well, but I would like this 'clean' example to work if that is feasible ( I do not find a simple example in the guide)
For the server-side code I am using these jersey-dependencies (part of my pom.xml) and I am deplying the code in Tomcat 8.
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<jersey.version>1.19.4</jersey.version>
<log4j.version>1.2.17</log4j.version>
</properties>
<!-- Works for Tomcat 8-->
<dependencies>
<!-- https://mvnrepository.com/artifact/com.sun.jersey/jersey-server -->
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>${jersey.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.sun.jersey/jersey-servlet -->
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-servlet</artifactId>
<version>${jersey.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.sun.jersey/jersey-json -->
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>${jersey.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.sun.jersey.contribs/jersey-multipart -->
<dependency>
<groupId>com.sun.jersey.contribs</groupId>
<artifactId>jersey-multipart</artifactId>
<version>${jersey.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.jboss.resteasy/resteasy-multipart-provider -->
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-multipart-provider</artifactId>
<version>4.3.1.Final</version>
</dependency>
来源：https://stackoverflow.com/questions/58809689/resteasy-and-the-multipartform-server-and-client