如何编写接受二进制文件的restful Web服务（pdf）

我正在尝试在java中编写一个宁静的Web服务，它将采用一些字符串参数和一个二进制文件（pdf）参数。

我理解如何做字符串，但我已经挂断了二进制文件。 任何想法/例子？

这是我到目前为止所拥有的

@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(); } 

自从我发布了这个已删除答案的链接，所以这是我的实现。

 @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; } 

Answer 1

 @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; } 

Answer 2

您可以将二进制附件存储在请求正文中。 或者，请在此处查看此邮件列表存档：

http://markmail.org/message/dvl6qrzdqstrdtfk

它建议使用Commons FileUpload来获取文件并适当地上传它。

这里使用MIME multipart API的另一种选择：

http://n2.nabble.com/File-upload-with-Jersey-td2377844.html

Answer 3

示例程序使用jersey restful web服务上传文件

需要Jar文件（从Apache站点下载）：commons-fileupload.jar，commons-io.jar

 package com.sms.web; import java.io.File; import java.util.Iterator; import java.util.List; import javax.ws.rs.POST; import javax.ws.rs.Path; import javax.ws.rs.core.Context; import javax.servlet.http.HttpServletRequest; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; @Path("/UploadTest") public class UploadData { @POST // public String upload(@Context HttpServletRequest request, @PathParam("myfile") String fileName) throws Exception { public String upload(@Context HttpServletRequest request) throws Exception { String response = "none"; if (ServletFileUpload.isMultipartContent(request)) { response="got file in request"; // Create a factory for disk-based file items DiskFileItemFactory fileItemFactory = new DiskFileItemFactory(); String path = request.getRealPath("") + File.separatorChar + "publishFiles" + File.separatorChar; // File f = new File(path + "myfile.txt"); // File tmpDir = new File("c:\\tmp"); File destinationDir = new File(path); // Set the size threshold, above which content will be stored on disk. // fileItemFactory.setSizeThreshold(1*1024*1024); //1 MB // Set the temporary directory to store the uploaded files of size above threshold. // fileItemFactory.setRepository(tmpDir); // Create a new file upload handler ServletFileUpload uploadHandler = new ServletFileUpload(fileItemFactory); try { /* * Parse the request */ List items = uploadHandler.parseRequest(request); Iterator itr = items.iterator(); while(itr.hasNext()) { FileItem item = (FileItem) itr.next(); /* * Handle Form Fields. */ if(item.isFormField()) { response += "
" + "Field Name = "+item.getFieldName()+", Value = "+item.getString(); } else { //Handle Uploaded files. response += "
" + "File Field Name = "+item.getFieldName()+ ", File Name = "+item.getName()+ ", Content type = "+item.getContentType()+ ", File Size = "+item.getSize(); /* * Write file to the ultimate location. */ File file = new File(destinationDir,item.getName()); item.write(file); } } }catch(FileUploadException ex) { response += "Error encountered while parsing the request " + ex; } catch(Exception ex) { response += "Error encountered while uploading file " + ex; } } return response; } }