javascript - 如何使用 javascript 适配器将图像发布到服务器并获取 xml 结果？

Question

适配器以前可以工作，现在适配器不工作。我的本地计算机上安装了 Mobile Foundation 8.0 beta，并迁移到 MobileFirst Foundation 8.0 GA 版本。

.java 服务器将图像发送到 alchemy，然后仅将 alchemy xml 结果返回给 MobileFirst 适配器。

Android 和 iOS 的 Debug 信息不同，所以我都列出来。

a) iOS MobileClient:

iOS 上的信息与 Android 上的信息不同。XML 适配器的 cordova mfp-pluging 实现中似乎可能存在 bug:

因为适配器似乎需要响应 json 结构中的 “responseJSON”，这就是我的想法，基于调试信息。xCode 调试器自动显示的响应不包含“responseJSON”，但它包含 alchemy 结果中的所有有效值。

看看这里的 xCode 调试 输出:

原因相同

016-07-14 11:37:54.021 Check[5996:5470887] >>> Image to get Tags formParams :  [object Object]
2016-07-14 11:37:54.021 Check[5996:5470887] >>> Image to get Tags formParams :  [object Object]
2016-07-14 11:37:54.810 Check[5996:5470887] >>> Failure, getTags is :  [object Object]
2016-07-14 11:37:54.810 Check[5996:5470887] >>> Failure, getTags is :  {"responseHeaders":{"Connection":"Keep-Alive","Content-Type":"application/json","X-Powered-By":"Servlet/3.1","X-Backside-Transport":"FAIL FAIL","X-Global-Transaction-ID":"610291743","Date":"Thu, 14 Jul 2016 09:37:54 GMT","Transfer-Encoding":"Identity"},"status":500,"responseText":"{\"statusReason\":\"Internal Server Error\",\"responseHeaders\":{\"Transfer-Encoding\":\"chunked\",\"X-Backside-Transport\":\"FAIL FAIL\",\"Connection\":\"Keep-Alive\",\"X-Global-Transaction-ID\":\"78953555\",\"Content-Language\":\"en-US\",\"Date\":\"Thu, 14 Jul 2016 09:37:54 GMT\",\"Content-Type\":\"text/html;charset=UTF-8\",\"X-Powered-By\":\"Servlet/3.1\"},\"isSuccessful\":false,\"responseTime\":164,\"totalTime\":174,\"warnings\":[],\"errors\":[\"org.xml.sax.SAXParseException: The element type \\\"meta\\\" must be terminated by the matching end-tag \\\"</meta>\\\".\",\"Failed to parse the payload from backend (procedure: getTagsForPicture)\"],\"info\":[],\"statusCode\":500}","responseJSON":{"statusReason":"Internal Server Error","responseHeaders":{"Transfer-Encoding":"chunked","X-Backside-Transport":"FAIL FAIL","Connection":"Keep-Alive","X-Global-Transaction-ID":"78953555","Content-Language":"en-US","Date":"Thu, 14 Jul 2016 09:37:54 GMT","Content-Type":"text/html;charset=UTF-8","X-Powered-By":"Servlet/3.1"},"isSuccessful":false,"responseTime":164,"totalTime":174,"warnings":[],"errors":["org.xml.sax.SAXParseException: The element type \"meta\" must be terminated by the matching end-tag \"</meta>\".","Failed to parse the payload from backend (procedure: getTagsForPicture)"],"info":[],"statusCode":500},"errorCode":500,"errorMsg":"Request failed: internal server error (500)","invocationContext":null}
2016-07-14 11:37:54.814 Check[5996:5470887] ERROR GET TAGS***** [object Object]
2016-07-14 11:38:09.341 Check[5996:5470887] Response Content : {"statusReason":"OK","responseHeaders":{"Transfer-Encoding":"chunked","X-Backside-Transport":"OK OK","Connection":"Keep-Alive","X-Global-Transaction-ID":"336117367","Content-Language":"en-US","Date":"Thu, 14 Jul 2016 09:38:09 GMT","Content-Type":"text/xml;charset=ISO-8859-1","X-Powered-By":"Servlet/3.1"},"isSuccessful":true,"responseTime":2055,"totalTime":2057,"warnings":[],"results":{"totalTransactions":"4","NOTICE":"THIS API FUNCTIONALITY IS DEPRECATED AND HAS BEEN MIGRATED TO WATSON VISUAL RECOGNITION. THIS API WILL BE DISABLED ON MAY 19, 2017.","usage":"By accessing AlchemyAPI or using information generated by AlchemyAPI, you are agreeing to be bound by the AlchemyAPI Terms of Use: http://www.alchemyapi.com/company/terms.html","imageKeywords":{"keyword":[{"score":"0.574443","text":"large"},{"score":"0.5","text":"building"}]},"url":"","status":"OK"},"errors":[],"info":[],"statusCode":200}

b) Android 移动客户端:

当我从 cordova 移动 android 客户端执行 javascript 适配器 XML 时，出现以下错误。

1.  Array[2]
1.  0:"org.xml.sax.SAXParseException: The element type "meta" must be terminated by the matching end-tag "</meta>"."
2.  1:"Failed to parse the payload from backend (procedure: getTagsForPicture)"

Chrome 控制台中 Android 应用的完整错误信息:

当我检查服务器日志或海报中的 XML 时，我没有看到任何信息。

a) 海报 xml 结果:

b) .java 服务器登录 bluemix:

Apdater 和 MobileClient 的实现:

a) 适配器代码:

function getTagsForPicture(urlimage) {
var value = "image=" + urlimage;

var requestStructure = {
     method : 'post',
     returnedContentType : 'xml',
     path : 'GetImageKeywords',
     parameters: {'image': urlimage },
     headers: {"Accept":"application\/plain"}
};
MFP.Logger.warn("Preparing request structure " + JSON.stringify(requestStructure));
return MFP.Server.invokeHttp(requestStructure);
}

b) cordova 客户端代码:

 var formParams = {"params":"['"+ image + "']"}; 
 var getTagsRequest = new WLResourceRequest(
          "/adapters/UploadPic/getTagsForPicture",
          WLResourceRequest.POST);
          console.log('>>> Image to get Tags formParams : ', formParams); 

          getTagsRequest.sendFormParameters(formParams);
          getTagsRequest.send().then(
              getTagsSuccess,
              getTagsFailure
          );

Answer 1

我认为问题与客户端中的代码有关:

var formParams = {"params":"['"+ image + "']"}; 
var getTagsRequest = new WLResourceRequest(
      "/adapters/UploadPic/getTagsForPicture",
      WLResourceRequest.POST);
      console.log('>>> Image to get Tags formParams : ', formParams); 

      getTagsRequest.sendFormParameters(formParams);
      getTagsRequest.send().then(
          getTagsSuccess,
          getTagsFailure
      );

因为 getTagsRequest.sendFormParameters(formParams); 与 getTagsRequest.send().then 的作用相同。我删除了 getTagsRequest.send() ，代码中的结果如下:

  getTagsRequest.sendFormParameters(formParams);
  getTagsRequest.send().then(

更改代码后

sendRequest.sendFormParameters(formParams).send().then(
//sendRequest.send().then(
         sendSuccess,
         sendFailure
);

成功了。

@谢谢:感谢所有提供反馈的人。特别献给@Idan Adar。