java – Spring:文件上传RESTFUL Web Service
发布时间:2020-12-14 16:28:17 所属栏目:Java 来源:网络整理
导读:我正在使用 Spring 4.0为RESTFUL Web服务创建POC. 如果我们只传递String或任何其他基本数据,它可以正常工作. @RequestMapping(value="/getcontent/file",method=RequestMapping.post)public String getFileContents(@RequestParam("fileName",required=false
我正在使用
Spring 4.0为RESTFUL Web服务创建POC.
如果我们只传递String或任何其他基本数据,它可以正常工作. @RequestMapping(value="/getcontent/file",method=RequestMapping.post) public String getFileContents(@RequestParam("fileName",required=false) String fileName){ logger.info("initialization of object"); //---------------------------------------- System.out.Println("name of File : " + fileName); //---------------------------------------- } 这工作正常 @RequestMapping(value="/getcontent/file",method=RequestMapping.post) public String getFileContents(@RequestParam("file",required=false) byte [] fileName){ //--------------------- // } 我试过这个代码,但是得到415错误. @RequestMapping(value = "/getcontent/file",method = RequestMethod.POST,consumes="multipart/form-data") public @ResponseBody String getContentFromBytes(@RequestBody MultipartFormDataInput input,Model model) { logger.info("Get Content. "); //------------ } 客户端代码 – 使用apache HttpClient private static void executeClient() { HttpClient client = new DefaultHttpClient(); HttpPost postReqeust = new HttpPost(SERVER_URI + "/file"); try{ // Set Various Attributes MultipartEntity multipartEntity = new MultipartEntity(); multipartEntity.addPart("fileType",new StringBody("DOCX")); FileBody fileBody = new FileBody(new File("D:demo.docx"),"application/octect-stream"); // prepare payload multipartEntity.addPart("attachment",fileBody); //Set to request body postReqeust.setEntity(multipartEntity); HttpResponse response = client.execute(postReqeust) ; //Verify response if any if (response != null) { System.out.println(response.getStatusLine().getStatusCode()); } } catch(Exception ex){ ex.printStackTrace(); } 解决方法
您可以创建如下所示的休息服务.
@RequestMapping(value="/upload",method=RequestMethod.POST) public @ResponseBody String handleFileUpload( @RequestParam("file") MultipartFile file){ String name = "test11"; if (!file.isEmpty()) { try { byte[] bytes = file.getBytes(); BufferedOutputStream stream = new BufferedOutputStream(new FileOutputStream(new File(name + "-uploaded"))); stream.write(bytes); stream.close(); return "You successfully uploaded " + name + " into " + name + "-uploaded !"; } catch (Exception e) { return "You failed to upload " + name + " => " + e.getMessage(); } } else { return "You failed to upload " + name + " because the file was empty."; } } 而客户端做如下. import java.io.File; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.HttpVersion; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.mime.MultipartEntity; import org.apache.http.entity.mime.content.ContentBody; import org.apache.http.entity.mime.content.FileBody; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.CoreProtocolPNames; import org.apache.http.util.EntityUtils; public class Test { public static void main(String[] args) throws Exception { HttpClient httpclient = new DefaultHttpClient(); httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION,HttpVersion.HTTP_1_1); HttpPost httppost = new HttpPost("http://localhost:8080/upload"); File file = new File("C:UsersKamalDesktopPDFServlet1.pdf"); MultipartEntity mpEntity = new MultipartEntity(); ContentBody cbFile = new FileBody(file,"multipart/form-data"); mpEntity.addPart("file",cbFile); httppost.setEntity(mpEntity); System.out.println("executing request " + httppost.getRequestLine()); HttpResponse response = httpclient.execute(httppost); HttpEntity resEntity = response.getEntity(); System.out.println(response.getStatusLine()); if (resEntity != null) { System.out.println(EntityUtils.toString(resEntity)); } if (resEntity != null) { resEntity.consumeContent(); } httpclient.getConnectionManager().shutdown(); } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |