上传文件：使用 Java Comsuming WCF Web 服务

Question

我有一个 WCF Web 服务 (.NET C#)。我想通过 java 客户端应用程序使用该服务。

我使用以下代码成功连接到 Web 服务。但是现在我遇到了 uploadFile 方法的问题。

当我将字符串传递给请求实体时，它会调用 Web 服务方法，但是当我 passed/set FileInputStream RequestEntity 时，它会抛出异常...

Connection reset by peer: socket write error

我的Java客户端代码如下....

请忽略：此处未添加日志...

    public void consumeService(){
        String sXML = null;
        String sURI = URI + "/upload";
        sXML = item;
        HashMap<String, String> header = new HashMap();
        header.put("Content-type", "application/x-www-form-urlencoded");

        File file = new File("C:\Users\admin\Desktop\P1130503.JPG");
        try {

           RequestEntity requestEntity= new InputStreamRequestEntity(
                    new FileInputStream(sFile), InputStreamRequestEntity.CONTENT_LENGTH_AUTO);
            for (Map.Entry<String, String> entry : headers.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            headers.addHeader(key, value);
            }
        } catch (Exception ex) {
            Logger.getLogger(C3Service.class.getName()).log(Level.SEVERE, null, ex);
        }


        HttpMethodBase httpPostRequest = new PostMethod(url + buildParams());
        HttpClient client = new HttpClient();
        try {
            // add headers
            Iterator it = headers.entrySet().iterator();
            while (it.hasNext()) {
            Entry header = (Entry) it.next();
            httpPostRequest.addRequestHeader((String) header.getKey(), (String) header.getValue());

            }
           ((PostMethod) httpPostRequest).setRequestEntity(requestEntity);
            try {
            respCode = client.executeMethod(httpPostRequest);
            System.out.println("Response Code  "+respCode);
            response = httpPostRequest.getResponseBodyAsString();
            this.responsePhrase = httpPostRequest.getStatusText();
            System.out.println("Response  "+response);
            System.out.println("Response Phase  "+responsePhrase);

          }catch(Exception ex){
                System.out.println("ErrorS "+ex.toString());
            } finally {
              //  resp.close();
            httpPostRequest.releaseConnection();
            }
        }catch(Exception ex){
          System.out.println("ErrorD "+ex.toString());
        }
        finally {
            //client.c
        }
  }

注意：当我传递字符串并设置 StringRequestEntity 然后它工作文件。

 new StringRequestEntity(statusAsXml, "text/plain", Constants.DEFAULT_ENCODING)

C#代码

我服务

        [OperationContract]
        [WebInvoke(Method = "POST", ResponseFormat = WebMessageFormat.Xml, BodyStyle = WebMessageBodyStyle.Wrapped, UriTemplate = "upload")]
        bool upload(Stream relativePath);

Answer 1

我得到了答案。这是分配有效内容类型的问题。我正在设置内容类型

 header.put("Content-type", "application/x-www-form-urlencoded");

使用以下内容类型后，我能够成功上传文件

httpConn.setRequestProperty("Content-Type","multipart/form-data");

上传文件：使用 Java Comsuming WCF Web 服务

Upload File: Comsuming WCF Web Service Using Java

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