Question

我需要创建一个JAX-RS 2.0客户端，它使用MULTIPART_FORM_DATA内容类型发布文件和一些参数。（不需要服务，只需要客户端）我已经看到一些依赖于特定实现的示例，比如Jersey或RESTEasy，但我不想将我的代码绑定到任何...特别是Apache CXF（我正在使用WAS Liberty Profile）。关于如何做的任何想法？我是否必须坚持某些特定的课程？如果是这样，我怎么能使用Apache CXF 3.0（Liberty使用CXF for JAX-RS 2.0）

由于

Answer 1

[我目前无法根据已经写好的答案发表评论]

如果有人从Anatoly的答案中搜索IMultipartBody的Maven依赖项：

<dependency>
    <groupId>com.ibm.websphere.appserver.api</groupId>
    <artifactId>com.ibm.websphere.appserver.api.jaxrs20</artifactId>
    <version>1.0.39</version>
    <scope>provided</scope>
</dependency>

感谢https://github.com/OpenLiberty/open-liberty/issues/11942#issuecomment-619996093中的andymc12

Answer 2

您可以使用此示例如何使用 jax-rs 2.0功能来实现它：https://www.ibm.com/support/knowledgecenter/SSD28V_8.5.5/com.ibm.websphere.wlp.nd.doc/ae/twlp_jaxrs_multipart_formdata_from_html.html这几乎是工作示例（某些语句应该包含在try-catch块中，但你会看到什么时候将它发布到IDE。

package com.example.jaxrs;
@POST
@Consumes("multipart/form-data")
@Produces("multipart/form-data")

public Response postFormData(IMultipartBody multipartBody) {
  List <IAttachment> attachments = multipartBody.getAllAttachments();
         String formElementValue = null; 
         InputStream stream = null;
         for (Iterator<IAttachment> it = attachments.iterator(); it.hasNext();) {
              IAttachment attachment = it.next();
              if (attachment == null) {
                  continue;
              }
              DataHandler dataHandler = attachment.getDataHandler();
              stream = dataHandler.getInputStream();
              MultivaluedMap<String, String> map = attachment.getHeaders();
              String fileName = null;
              String formElementName = null;
              String[] contentDisposition = map.getFirst("Content-Disposition").split(";");
              for (String tempName : contentDisposition) {
                  String[] names = tempName.split("=");
                  formElementName = names[1].trim().replaceAll("\"", "");
                  if ((tempName.trim().startsWith("filename"))) {
                      fileName = formElementName;
                  }
              }
              if (fileName == null) {
                  StringBuffer sb = new StringBuffer();
                  BufferedReader br = new BufferedReader(new InputStreamReader(stream));
                  String line = null;
                  try {
                      while ((line = br.readLine()) != null) {
                          sb.append(line);
                      }
                  } catch (IOException e) {
                      e.printStackTrace();
                  } finally {
                      if (br != null) {
                          try {
                              br.close();
                          } catch (IOException e) {
                              e.printStackTrace();
                          }
                      }
                  }
                  formElementValue = sb.toString();
                  System.out.println(formElementName + ":" + formElementValue);
              } else {
               //handle the file as you want
               File tempFile = new File(fileName);
               ...
              }
         }
         if (stream != null) {
             stream.close();
         }
         return Response.ok("test").build();
}

JAX-RS 2.0 MULTIPART_FORM_DATA文件上载不是特定于库的

2 个答案: