{"rsdb":{"rid":"376844","subhead":"","postdate":"0","aid":"263777","fid":"90","uid":"1","topic":"1","content":"
\n

  \u56fd\u5e86\u524d\uff0c\u53c2\u4e0e\u4e86\u4e00\u4e2ac# .net \u9879\u76ee\uff0c\u771f\u6b63\u91cd\u65b0\u4f53\u9a8c\u4e86\u4e00\u628a\u642c\u7816\u611f\u89c9\uff1a\u5728\u4e00\u4e2a\u591a\u6708\u65f6\u95f4\u597d\u50cf\u4e0d\u52a0\u4efb\u4f55\u601d\u8003\uff0c\u4e0d\u65ad\u6572\u952e\u76d8\u52a0\u4ee3\u7801\u3002\u6211\u60f3\uff0c\u8fd9\u4e5f\u8bb8\u662f\u884c\u4e1a\u5185\u5927\u90e8\u5206\u4e2d\u5c0f\u578b\u516c\u53f8\u7a0b\u5e8f\u733f\u7684\u771f\u5b9e\u5199\u7167\uff1a\u90fd\u662f\u5750\u5728\u7535\u8111\u524d\u7684\u642c\u7816\u5de5\u4eba\u3002\u4e0d\u8fc7\u4e5f\u4e0d\u662f\u6ca1\u6709\u4efb\u4f55\u6536\u83b7\uff0c\u5728\u642c\u7816\u7684\u8fc7\u7a0b\u4e2d\u6211\u4f3c\u4e4e\u53d1\u73b0\u4e86\u4e00\u4e9b\u73b0\u8c61\u548c\u9020\u6210\u8fd9\u4e9b\u73b0\u8c61\u80cc\u540e\u7684\u539f\u56e0\u53caOOP\u601d\u7ef4\u3001\u4e60\u60ef\u6a21\u5f0f\u3002\u548c\u5927\u90e8\u5206IT\u516c\u53f8\u4e00\u6837\uff0c\u8fd9\u95f4\u516c\u53f8\u5728\u884c\u4e1a\u91cc\u5b58\u5728\u4e86\u4e00\u5b9a\u65f6\u95f4\uff08\u4e0d\u662f\u521d\u521b\uff09\u6240\u4ee5\u5728\u4ea7\u54c1\u548c\u6280\u672f\u65b9\u9762\u6709\u4e00\u5b9a\u7684\u79ef\u7d2f\uff0c\u901a\u4fd7\u70b9\u5c31\u662f\u4e00\u5806\u73b0\u6210\u7684c# .net \u4ee3\u7801\u3002\u7136\u540e\u5c31\u662f\u9879\u76ee\u622a\u6b62\u65e5\u671f\u538b\u529b\u3002\u4e3a\u4e86\u6309\u65f6\u5b8c\u6210\u4efb\u52a1\u7684\u6211\u53ea\u80fd\u5728\u539f\u6709\u4ee3\u7801\u57fa\u7840\u4e0a\u4e0d\u65ad\u52a0\u529f\u80fd\uff0c\u6839\u672c\u6ca1\u6709\u673a\u4f1a\u53bb\u8003\u8651\u7528\u4ec0\u4e48\u6837\u7684\u4ee3\u7801\u6a21\u5f0f\u3001\u7ed3\u6784\u53bb\u8fbe\u5230\u66f4\u597d\u7684\u6548\u679c\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u6709\u4e2a\u6709\u8da3\u7684\u73b0\u8c61\u5f15\u8d77\u4e86\u6211\u7684\u6ce8\u610f\uff1a\u57fa\u672c\u4e0a\u6211\u53ea\u9700\u6309\u7167\u67d0\u79cd\u6d41\u7a0b\uff08\u591a\u6570\u662f\u4e1a\u52a1\u9700\u6c42\uff09\u4e00\u4e2a\u4e2a\u589e\u52a0\u73af\u8282\u5c31\u53ef\u4ee5\u5b9e\u73b0\u4e00\u9879\u5b8c\u6574\u529f\u80fd\uff0c\u5f53\u7136\u6211\u662f\u4e0d\u4f1a\u8ba1\u8f83\u8fd9\u4e9b\u73af\u8282\u5bf9\u8f6f\u4ef6\u5176\u5b83\u90e8\u5206\u662f\u5426\u4ea7\u751f\u5f71\u54cd\uff0c\u53c8\u6216\u8005\u4ee5\u540e\u4ee3\u7801\u7ef4\u62a4\u4f1a\u4e0d\u4f1a\u5f88\u9ebb\u70e6\uff0c\u53ea\u8981\u80fd\u53ca\u65f6\u4ea4\u8d27\u5c31\u884c\u3002\u60f3\u60f3\u8fd9\u79cd\u505a\u6cd5\u6070\u6070\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u6216\u6240\u8c13\u884c\u4ee4\u5f0f\u7f16\u7a0b\u7684\u7279\u70b9\uff0c\u5373\uff1a\u901a\u8fc7\u9010\u884c\u6267\u884c\u547d\u4ee4\u5f15\u5bfc\u7a0b\u5e8f\u7684\u72b6\u6001\u6539\u53d8\uff0c\u6700\u7ec8\u72b6\u6001\u5c31\u662f\u8fd0\u884c\u7a0b\u5e8f\u7684\u7ed3\u679c\u4e86\uff0c\u6216\u8005\u5c31\u662f\u529f\u80fd\u7684\u5b9e\u73b0\u4e86\u3002\u901a\u8fc7\u4e00\u884c\u884c\u589e\u52a0\u4ee3\u7801\u6700\u7ec8\u603b\u4f1a\u5230\u8fbe\u9884\u671f\u7684\u72b6\u6001\uff0c\u4e0d\u662f\u5417\u3002\u8fd9\u6b63\u662fOO\u7f16\u7a0b\u7684\u601d\u7ef4\u6a21\u5f0f\uff1a\u56e0\u4e3a\u7a0b\u5e8f\u72b6\u6001\u4f53\u73b0\u5728\u6bcf\u884c\u4ee3\u7801\u4e0a\uff0c\u968f\u65f6\u53ef\u4ee5\u68c0\u67e5\uff0c\u9a8c\u8bc1\u601d\u8def\uff0c\u6240\u4ee5OOP\u6bd4\u8f83\u5bb9\u6613\u4e0a\u624b\uff08\u76f8\u5bf9\u51fd\u6570\u5f0f\u7f16\u7a0b\u800c\u8a00\uff09\u3002<\/span><\/p> \n

        \u56de\u987e\u4e00\u4e0b\u51fd\u6570\u5f0f\u7f16\u7a0b\uff1a\u597d\u50cf\u5f88\u96be\u6309\u7167\u81ea\u7136\u903b\u8f91\u601d\u7ef4\u987a\u5e8f\u6765\u5b9e\u73b0\u4e00\u4e2a\u529f\u80fd\uff0c\u8fd9\u662f\u56e0\u4e3a\u51fd\u6570\u5f0f\u7f16\u7a0b\u662f\u4e00\u79cd\u5d4c\u5957\u5f0f\u95f4\u63a5\u6027\u7684\u7f16\u7a0b\u6a21\u5f0f\uff0c\u5373\u7a0b\u5e8f\u662f\u5728\u67d0\u79cd\u5d4c\u5957\u91cc\u8fd0\u884c\u7684\u3002\u51fd\u6570\u5f0f\u7f16\u7a0b\u53c8\u88ab\u79f0\u4e3amonatic-programming\uff0c\u5373\u5728monad\u91cc\u7f16\u7a0b\u3002monad\u5c31\u662f\u6211\u6240\u8bf4\u7684\u5d4c\u5957\uff0c\u662f\u4e00\u79cd\u7c7b\u578b\u7ed3\u6784\uff0c\u6700\u5e38\u7528\u7684\u662fFuture\u7c7b\u578b\u3002\u5728\u73b0\u4ee3\u7f16\u7a0b\u91cc\u591a\u7ebf\u7a0b\u7f16\u7a0b\u975e\u5e38\u666e\u904d\uff0c\u5b9e\u9645\u4e0a\u5f80\u5f80\u6211\u4eec\u79bb\u4e0d\u5f00\u5404\u79cd\u5404\u6837\u7684Future\u3002\u4e3e\u4e2a\u5f62\u8c61\u7684\u4f8b\u5b50\uff1a\u5982\u679c\u5b9e\u73b0\u628a\u810f\u6c34\u4eceA\u70b9\u5f15\u5230B\u70b9\u8f93\u51fa\u7eaf\u51c0\u6c34\u4f5c\u4e3a\u67d0\u79cd\u51fd\u6570\u5f0f\u7a0b\u5e8f\uff0c\u7f16\u7a0b\u5982\u540c\u642d\u5efa\u7ba1\u9053\u7f51\u3002\u5fc5\u987b\u9996\u5148\u51c6\u5907\u597d\u5404\u5f0f\u5404\u6837\u529f\u80fd\u7684\u5589\u7ba1\uff0c\u5b9e\u73b0\u6bcf\u79cd\u5589\u7ba1\u7684\u7279\u6b8a\u529f\u80fd\u5982\u8fc7\u6ee4\u3001\u6d88\u6bd2\u7b49\uff0c\u7136\u540e\u518d\u8fde\u63a5\u7ec4\u5408\u5f62\u6210\u9001\u6c34\u7ba1\u9053\u3002<\/span><\/p> \n

      \u6211\u5728\u8fdb\u884c\u51fd\u6570\u5f0f\u7f16\u7a0b\u65f6\u603b\u662f\u8981\u628a\u6240\u4ee5\u95ee\u9898\u524d\u524d\u540e\u540e\u90fd\u8003\u8651\u6e05\u695a\u4e86\u624d\u80fd\u5f00\u59cb\u52a8\u624b\u3002\u9996\u5148\u4f1a\u628a\u4e00\u9879\u529f\u80fd\u7684\u6240\u6709\u73af\u8282\u5148\u603b\u7ed3\u51fa\u6765\uff0c\u8fd9\u4e9b\u90fd\u662f\u4e00\u4e9b\u51fd\u6570\u3002\u7136\u540e\u5c1d\u8bd5\u628a\u8fd9\u4e9b\u51fd\u6570\u7684\u7c7b\u578b\u7edf\u4e00\u4e86\uff0c\u5c31\u50cf\u4e0a\u9762\u63d0\u5230\u7684\u5589\u7ba1\u4e00\u6837\uff0c\u56e0\u4e3a\u4e0d\u540c\u89c4\u683c\u7684\u5589\u7ba1\u662f\u65e0\u6cd5\u8fde\u63a5\u7684\u3002\u540c\u6837\uff0c\u4e0d\u540c\u7c7b\u578b\u7684\u5d4c\u5957monad\u662f\u65e0\u6cd5\u5b9e\u73b0\u51fd\u6570\u7ec4\u5408\u7684\u3002\u7136\u540e\u5148\u6839\u636e\u9700\u6c42\u5b9e\u73b0\u8fd9\u4e9b\u51fd\u6570\u7684\u8f93\u5165\u8f93\u51fa\uff0c\u6700\u540e\u628a\u8fd9\u4e9b\u51fd\u6570\u7ec4\u5408\u8d77\u6765\u5f62\u6210\u5b8c\u6574\u529f\u80fd\u3002\u4f60\u770b\uff0c\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u91cc\u662f\u65e0\u6cd5\u505a\u5230\u968f\u610f\u60f3\u5230\u90a3\u5c31\u5199\u5230\u90a3\u7684\uff0c\u5fc5\u987b\u5148\u8fdb\u884c\u6574\u4f53\u7684\u601d\u91cf\u3002\u6240\u4ee5\uff0c\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u4ee3\u7801\u91cd\u7528\u548c\u7ef4\u62a4\u4e0a\u6709\u5148\u5929\u7684\u4f18\u52bf\u3002\u8fd9\u4e2a\u4f8b\u5b50\u4e5f\u4f53\u73b0\u4e86\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u601d\u7ef4\u6a21\u5f0f\u3002<\/span><\/p> \n

   \u4e0b\u9762\u6211\u60f3\u7528\u4e00\u4e2a\u5b9e\u9645\u7684\u4f8b\u5b50\u6765\u793a\u8303\u51fd\u6570\u5f0f\u7f16\u7a0b\u6a21\u5f0f\uff1a\u524d\u9762\u51e0\u7bc7\u8ba8\u8bba\u7684\u4f8b\u5b50\u91cc\u6709\u4e00\u4e2a\u662f\u628a\u524d\u7aefhttpclient\u4e0a\u4f20httpserver\u7684\u56fe\u7247\u5b58\u653e\u5165\u670d\u52a1\u5668\u7aefmongodb\u6570\u636e\u5e93\u7684\u3002\u73b0\u5728\u53d1\u73b0\u5ba2\u6237\u7aef\u4e0a\u4f20\u56fe\u7247\u6570\u636e\u6d41\u6709\u56f0\u96be\uff0c\u5e0c\u671b\u4e0a\u4f20\u4e00\u4e2a\u56fe\u7247\u4e0b\u8f7d\u7f51\u5740\uff0c\u7531httpserver\u81ea\u884c\u4e0b\u8f7d\u56fe\u7247\u5e76\u5199\u5165mongodb\u3002\u5355\u4ece\u8fd9\u4e2a\u529f\u80fd\u6765\u8bb2\uff0c\u5e94\u8be5\u7531\u51e0\u4e2a\u73af\u8282\u7ec4\u6210\uff1a<\/span><\/p> \n

1\u3001\u4ece\u4e0a\u4f20\u7684\u6570\u636e\u4e2d\u62bd\u51fa\u56fe\u7247\u4e0b\u8f7d\u7f51\u5740<\/span><\/p> \n

2\u3001\u4e0b\u8f7d\u56fe\u7247\uff0c\u901a\u8fc7http\u7684request\u8bf7\u6c42\uff0c\u4eceresponse\u91cc\u83b7\u53d6\u56fe\u7247\u6570\u636e\u6d41<\/span><\/p> \n

3\u3001\u901a\u8fc7mongodb\u7684count\u529f\u80fd\u83b7\u53d6\u56fe\u7247\u7cfb\u5217\u5e8f\u53f7<\/span><\/p> \n

4\u3001\u5c06\u56fe\u7247\u5199\u5165mongodb<\/span><\/p> \n

\u9996\u5148\uff0c\u6211\u9700\u8981\u628a\u8fd9\u51e0\u4e2a\u73af\u8282\u5f62\u6210\u51fd\u6570\uff0c\u7136\u540e\u7edf\u4e00\u51fd\u6570\u7c7b\u578b\u3002\u65e0\u53ef\u4e89\u8bae\uff0c\u6700\u597d\u9009\u62e9Future[A]\u8fd9\u6837\u7684\u51fd\u6570\u8fd4\u56de\u7c7b\u578b\uff1a<\/span><\/p> \n

\u5047\u8bbe\u6570\u636e\u662f\u7528json\u683c\u5f0f\u4f20\u4e0a\u6765\u7684\uff0c\u90a3\u5f97\u6709\u4e2a\u7c7b\u578b\u4f5c\u4e3a\u6570\u636e\u7ed3\u6784\uff1a<\/span><\/p> \n

 <\/p> \n

\n 
  case<\/span> class<\/span> UpData (pid: String, url: String)<\/span><\/pre> \n <\/div> \n 
 <\/p> \n 
\u53ef\u4ee5\u5982\u4e0b\u83b7\u53d6\u4e0a\u4f20\u7684\u6570\u636e\uff1a<\/span><\/p> \n 
 \n  
 entity(as<\/span>[String]) { json => val upData: UpData <\/span>= fromJson[UpData](json) ... }<\/span><\/span><\/pre> \n <\/div> \n 
\u83b7\u53d6\u56fe\u7247\u7cfb\u5217\u5e8f\u53f7\uff1a\u8fd4\u56deFuture[Long]<\/span><\/p> \n 
 <\/p> \n 
 <\/p> \n 
 \n  
repository.count(upData.pid).toFuture[Long]<\/span><\/pre> \n <\/div> \n 
 <\/p> \n 
\u4e0b\u8f7d\u56fe\u7247\uff1a\u8fd9\u4e2a\u8fd4\u56deFuture[ByteString]<\/span><\/p> \n 
 <\/p> \n 
 \n  
 import akka.actor.ActorSystem import akka.http.scaladsl.model._ import akka.http.scaladsl.Http def downloadPicture(url: String)(<\/span>implicit<\/span> sys: ActorSystem): Future[ByteString] = { val dlRequest <\/span>= HttpRequest(HttpMethods.GET, uri = url) Http(sys).singleRequest(dlRequest).flatMap { <\/span>case<\/span> HttpResponse(StatusCodes.OK, _, entity, _) => entity.dataBytes.runFold(ByteString()) { <\/span>case<\/span> (hd, bs) => hd <\/span>++ bs } <\/span>case<\/span> _ => Future.failed(new<\/span> RuntimeException("<\/span>failed getting picture!<\/span>"<\/span>)) } }<\/span><\/span><\/pre> \n <\/div> \n 
\u5199\u5165mongodb\uff1a\u8fd9\u4e2a\u51fd\u6570\u4e5f\u8fd4\u56deFuture[?]<\/span><\/p> \n 
 \n  
 def addPicuture(pid: String,seqno: Int, optDesc: Option[String] ,optWid:Option[Int],optHgh:Option[Int], bytes: Array[Byte]):Future[Completed] <\/span>={ <\/span>var<\/span> doc = Document( <\/span>"<\/span>pid<\/span>"<\/span> -> pid, <\/span>"<\/span>seqno<\/span>"<\/span> -> seqno, <\/span>"<\/span>pic<\/span>"<\/span> -> bytes ) <\/span>if<\/span> (optDesc != None) doc <\/span>= doc + ("<\/span>desc<\/span>"<\/span> -> optDesc.get<\/span>) <\/span>if<\/span> (optWid != None) doc <\/span>= doc + ("<\/span>width<\/span>"<\/span> -> optWid.get<\/span>) <\/span>if<\/span> (optHgh != None) doc <\/span>= doc + ("<\/span>height<\/span>"<\/span> -> optHgh.get<\/span>) repository.insert(doc).toFuture[Completed] }<\/span><\/span><\/pre> \n <\/div> \n 
\u597d\u4e86\uff0c\u73b0\u5728\u8fd9\u51e0\u4e2a\u51fd\u6570\u90fd\u662fFuture\u7c7b\u578b\u7684\uff0c\u53ef\u4ee5\u8fdb\u884c\u7ec4\u5408\u4e86\uff1a<\/span><\/p> \n 
 \n  
            val futSeqno: Future[Long] = for<\/span> { cnt <\/span><- repository.count(upData.pid).toFuture[Long] barr <\/span><- downloadPicture(upData.url) _ <\/span><- addPicuture(upData.pid, cnt.toInt, None, None, None, barr.toArray) } <\/span>yield<\/span> cnt<\/span><\/pre> \n <\/div> \n 
futSeqNo\u662f\u4e2a\u7ec4\u5408\u7684\u8fd0\u7b97\u6d41\u7a0b\u3002\u6ce8\u610f\u5b83\u7684\u7c7b\u578b\u8fd8\u662ffuture\uff1a\u610f\u5473\u8fd9\u6211\u4eec\u65e0\u6cd5\u9884\u6d4b\u8fd9\u4e2a\u8fd0\u7b97\u4ec0\u4e48\u65f6\u5019\u4f1a\u5b8c\u6210\uff0c\u7279\u522b\u5982\u679c\u4e0b\u8f7d\u4e00\u5f20\u8d85\u5927\u56fe\u7247\u53c8\u6216\u8005","orderid":"0","title":"restapi\uff087\uff09- \u8c08\u8c08\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u601d\u7ef4\u6a21\u5f0f\u548c\u4e60\u60ef(\u4e00)","smalltitle":"","mid":"0","fname":"Scala","special_id":"0","bak_id":"0","info":"0","hits":"276","pages":"2","comments":"0","posttime":"2019-10-09 20:01:12","list":"1570622472","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"restapi<\/A> \u8c08\u8c08<\/A> \u51fd\u6570<\/A> \u7f16\u7a0b<\/A> \u601d\u7ef4<\/A> \u6a21\u5f0f<\/A> \u4e60\u60ef<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"14.17.22.32","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"restapi\uff087\uff09- \u8c08\u8c08\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u601d\u7ef4\u6a21\u5f0f\u548c\u4e60\u60ef","lastview":"1714070039","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}