{"id":159415,"date":"2020-09-24T00:17:39","date_gmt":"2020-09-23T16:17:39","guid":{"rendered":"http:\/\/4563.org\/?p=159415"},"modified":"2020-09-24T00:17:39","modified_gmt":"2020-09-23T16:17:39","slug":"java-completablefuture-%e6%b5%81%e5%bc%8f%e7%bc%96%e7%a8%8b%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=159415","title":{"rendered":"Java CompletableFuture \u6d41\u5f0f\u7f16\u7a0b\u6700\u4f73\u5b9e\u8df5\uff1f"},"content":{"rendered":"
\n
\n
\n

Java CompletableFuture \u6d41\u5f0f\u7f16\u7a0b\u6700\u4f73\u5b9e\u8df5\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : nthin0 <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n
    \n
  • \u867d\u7136\u5728\u5f88\u591a\u5730\u65b9\u770b\u5230\u6709\u4eba\u8bf4 java8 \u91cc\u7684 CompletableFuture \u662f\u4e2a\u6b8b\u54c1\uff0c\u5fcd\u4e0d\u4f4f\u8fd8\u662f\u60f3\u5728\u9879\u76ee\u4e2d\u7528\u7528\uff0c\u7136\u540e\u5c31\u78b0\u5230\u51e0\u4e2a\u5f88\u86cb\u75bc\u7684\u95ee\u9898<\/li>\n<\/ul>\n

    \u91cd\u8bd5<\/h2>\n
      \n
    • \u5728 CompletableFuture \u91cc\u8c03 rest \u63a5\u53e3\uff0c\u53d1\u73b0\u6ca1\u6709\u81ea\u5e26\u7684\u91cd\u8bd5\u673a\u5236\uff0c\u6bd4\u5982\u6839\u636e\u54cd\u5e94\u7801\u91cd\u8bd5\uff0c\u6839\u636e exception \u7c7b\u578b\u91cd\u8bd5\uff0c\u6839\u636e\u7279\u5b9a\u7684\u54cd\u5e94\u5185\u5bb9\u91cd\u8bd5\u3002\u3002\u3002<\/li>\n
    • \u89e3\u51b3\uff1a\u5f15\u5165\u7b2c\u4e09\u65b9\u6846\u67b6Failsafe\uff0c\u76ee\u524d\u8ddf CompletableFuture \u642d\u914d\u4f7f\u7528\u611f\u89c9\u8fd8\u4e0d\u9519\uff0c\u9700\u8981\u7684\u529f\u80fd\u90fd\u6709\u4e86<\/li>\n<\/ul>\n

      \u4efb\u52a1\u987a\u5e8f<\/h2>\n
        \n
      • \u6709\u65f6\u5019\u60f3\u5728\u4e00\u4e2a\u4efb\u52a1\u5904\u963b\u585e\u4f4f\uff0c\u7b49\u5176\u4ed6\u4efb\u52a1\u5b8c\u6210\uff1b\u6709\u65f6\u5019\u9700\u8981\u591a\u4e2a\u4efb\u52a1\u5e76\u53d1\u5b8c\u6210\u3002\u76ee\u524d\u6ca1\u529e\u6cd5\u5728\u4e00\u6761\u6d41\u5f0f\u8bed\u53e5\u4e2d\u5b8c\u6210\u6240\u6709\u4efb\u52a1\uff0c\u9700\u8981\u62c6\u6210\u591a\u4e2a CompletableFuture\uff0c\u518d\u8fdb\u884c\u7ec4\u5408\n
          \n
        • \u201c\u4e00\u6761\u6d41\u5f0f\u4efb\u52a1\u201d\u6307\u7c7b\u4f3c\u8fd9\u79cd<\/li>\n<\/ul>\n
          CompletableFuture.supplyAsync(...)  .thenCompose(...)   .thenApply(...)   .thenRun(...)   .thenxxx(...)   .whenComplete((v, ex) -> ...); <\/code><\/pre>\n<\/li>\n
        • \u7528.thenCompose(v -> CompletableFuture.supplyAsync(() -> doWork(v), executor))\u65f6\u4efb\u52a1\u4f1a\u505c\u4e0b\u7b49 doWork \u5b8c\u6210\uff0c\u7528.thenRun(() -> doWork2())\u7684\u65f6\u5019\u4e0d\u4f1a\u3002\u3002\u3002\n
            \n
          • \u8fd9\u4e2a\u5730\u65b9\u5e94\u8be5\u662f\u6211\u7406\u89e3\u8fd8\u4e0d\u591f\uff0c\u6ca1\u6709\u7406\u6e05\u695a thenCompose \u3001thenCombine \u3001thenAccept \u3001thenRun \u3001thenApply \u4e2d\u54ea\u4e9b\u662f\u80fd\u591f\u201c\u963b\u585e\u201d\u7684\uff0c\u54ea\u4e9b\u662f\u4e0d\u80fd\u7684<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
            \u4e00\u6761\u6d41\u5f0f\u8bed\u53e5\u4e2d\u76ee\u524d\u6ca1\u89e3\u51b3\u7684\u95ee\u9898<\/h2>\n
            whenComplete<\/h3>\n
              \n
            • \u5728\u4e00\u6761\u6d41\u5f0f\u8bed\u53e5\u4e2d\u5b8c\u6210\u6240\u6709\u4efb\u52a1\u5c31\u4e0d\u7528\u5199\u591a\u4e2a whenComplete\uff0c\u628a\u6240\u6709\u4efb\u52a1\u4e2d\u51fa\u73b0\u7684\u5f02\u5e38\u90fd\u80fd\u653e\u5230\u4e00\u4e2a whenComplete \u7edf\u4e00\u5904\u7406\u3002<\/li>\n<\/ul>\n
              \u9700\u8981\u591a\u4e2a\u53c2\u6570\u53c2\u4e0e\u4efb\u52a1\u6d41\u8f6c\u7684\u95ee\u9898<\/h3>\n
              String doWork1(){}  Integer doWork2(String work1Result){}  String finalWork(String work1Result, Integer work2Result){}  CompletableFuture.supplyAsync(doWork1)    .thenCompose(doWork2)     .thenRun(someWork) \/\/someWork \u4e2d\u5e76\u4e0d\u9700\u8981 work1 \u548c work2 \u7684\u7ed3\u679c     .thenCompose(finalWork) <\/code><\/pre>\n
                \n
              • \n
                \u4f46\u662f\u4e3a\u4e86\u80fd\u591f\u5c06 work1 \u548c work2 \u7684\u7ed3\u679c\u4f20\u9012\u5230 finalWork\uff0c\u5c31\u5fc5\u987b\u8981\u5728 someWork \u4e2d\u5f3a\u884c\u52a0\u4e0a\u5165\u53c2\uff0c\u518d\u539f\u6837\u653e\u5230\u8fd4\u56de\u4e2d<\/p>\n<\/li>\n
              • \n
                \u89e3\u51b3\uff1a\u6240\u6709\u65b9\u6cd5\u4e00\u5f8b\u5165\u53c2 tuple\uff0c\u8fd4\u56de tuple\uff0c\u65b9\u6cd5\u4e2d\u53ea\u53d6\u9700\u8981\u7684\u503c\uff0c\u5176\u4ed6\u503c\u653e\u5728 tuple \u4e2d\u5f80\u540e\u6d41\u8f6c\u3002\u4f46\u662f\u65b9\u6cd5\u663e\u5f97\u4e0d\u591f\u6a21\u5757\uff0c\u5f88\u5197\u4f59\uff0c\u800c\u4e14\u5bf9\u540e\u9762\u7ef4\u62a4\u4ee3\u7801\u7684\u4eba\u5f88\u4e0d\u53cb\u597d<\/p>\n
                  \n
                • vavr\u6846\u67b6\u4e2d\u7684 tuple2 tuple3…\uff08\u901a\u8fc7 map1 \u3001update1 \uff09\u6216\u8005 either \u8fd8\u662f\u6bd4\u8f83\u597d\u7528\u7684\uff0c\u5f25\u8865\u4e86\u4e00\u90e8\u5206\u539f\u751f java \u7684\u7f3a\u9677<\/li>\n<\/ul>\n<\/li>\n
                • \n
                  \u611f\u89c9\u6700\u8fd1\u5bf9\u51fd\u6570\u5f0f\u7f16\u7a0b\u3001\u51fd\u5b50\u8fd9\u4e9b\u6bd4\u8f83\u5165\u8ff7\uff0c\u6709\u5927\u4f6c\u80fd\u63a8\u8350\u4e00\u4e0b java8 \u4e2d\u4f7f\u7528 CompletableFuture \u7684\u6b63\u786e\u59ff\u52bf\u5417<\/strong>\uff0c\u6216\u8005\u5173\u4e8e\u51fd\u6570\u5f0f\u7f16\u7a0b\u6bd4\u8f83\u597d\u7684\u6559\u7a0b<\/p>\n<\/li>\n<\/ul><\/div>\n
                   \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (16<\/span>)        <\/div>\n
                   <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
                    \n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : yamasa <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 1.\u60f3\u5b66 FP\uff0cjava \u662f\u5f88\u4e0d\u9002\u5408\u7684\u8bed\u8a00\u3002\u8981\u771f\u6b63\u7406\u89e3\u601d\u60f3\u5e94\u8be5\u8003\u8651\u5b66\u4e0b Lisp \u7684\u4e00\u4e9b\u65b9\u8a00\u3002\u53cd\u6b63\u56fd\u5185\u8fd9\u73af\u5883\u4f60\u4e5f\u6307\u671b\u4e0d\u4e86\u8fd9\u4e9b\u8bed\u8a00\u5403\u996d\uff0c\u5c31\u5f53\u662f\u4fee\u70bc\u5185\u529f\u4e86\u3002
                    2.\u5b9e\u5728\u8981\u5728 java \u91cc\u9762\u641e\uff0c\u4e0a reactor \u554a\uff0c\u6bd4 cf \u90a3\u4e00\u5957\u6b8b\u6b21\u54c1\u771f\u7684\u5b8c\u6210\u5ea6\u9ad8\u592a\u591a\u4e86\uff0c\u53ea\u8981\u4e1a\u52a1\u662f\u771f\u7684 async \u7684\uff0c\u53ef\u4ee5\u505a\u5230\u4e00\u628a\u68ad\u54c8\u5b8c\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : hdfg159 <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 emmm,\u7528 RxJava \u53bb\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : zoharSoul <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 CompletableFuture \u5c31\u662f\u4e2a\u6b8b\u5e9f.
                    \u5efa\u8bae\u4e00\u6b65\u5230\u4f4d\u76f4\u63a5 rxjava \u6216\u8005 kotlin \u534f\u7a0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : nthin0 <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 @yamasa \u611f\u8c22                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : nthin0 <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 @zoharSoul \u6df1\u6709\u540c\u611f\uff0c\u73b0\u6709\u7684 cf \u5b9e\u73b0\u5c40\u9650\u6027\u592a\u592a\u592a\u591a\u4e86\uff0c\u51c6\u5907\u770b\u770b rxjava\uff0c\u591a\u8c22                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : Skhizein <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 \u542c\u4e0a\u53bb\u597d\u50cf\u5b58\u5728\u94f6\u5f39\u4f3c\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : jelipo <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 \u5199\u4e1a\u52a1\u5c31\u7b97\u4e86\uff0c\u5fc3\u667a\u8d1f\u62c5\u6bd4\u8f83\u9ad8\uff0c\u4f60\u80fd\u5199\u51fa\u6765\u540c\u4e8b\u4e5f\u770b\u4e0d\u61c2
                    \u4e0a kotlin \u534f\u7a0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : wysnylc <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 \u6ca1\u6709\u94f6\u5f39                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : rulework <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 \u5efa\u8bae\u5b66\u4e0b scala                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : AllanAG <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 RxJava \u5728\u5b89\u5353\u4e0a\u4f7f\u7528\u8f83\u591a\uff0c\u540e\u7aef\u7684\u8bdd\u7684\u6709 Spring \u7684 Reactor\uff0c\u7f51\u7edc\u76f8\u5173\u7684 reactor-netty                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : ychost <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 \u64b8\u7684\u6700\u591a\u7684\u8fd8\u662f Stream\uff0cRxJava \u64b8\u591a\u4e86\u53d1\u73b0 Java \u4e0d\u9002\u5408                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : rim99 <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 CompletableFuture\/CompletableStage \u611f\u89c9\u9002\u5408\u4f5c\u4e3a\u6700\u7ec8\u8f93\u51fa\u7684\u7c7b\u578b\u4f7f\u7528\uff0c\u4e2d\u95f4\u8fc7\u7a0b\u7528 RxJava \u4e4b\u7c7b\u7684 Reactive Stream \u7c7b\u5e93\u66f4\u5408\u9002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u8cc7\u6df1\u5927\u4f6c : qiyuey <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 \u6362 Kotlin \u534f\u7a0b\u5427\uff0c\u8fd9\u4e2a\u5199\u8d77\u6765\u592a\u9ebb\u70e6\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : nthin0 <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 @jelipo \u8003\u8651\u5176\u4ed6\u540c\u4e8b\u7684\u5b66\u4e60\u6210\u672c\uff0c\u516c\u53f8\u9879\u76ee\u4e0a kotlin \u53ef\u80fd\u6027\u4e0d\u5927\uff0c\u53ea\u80fd\u5148\u719f\u6089\u51fd\u6570\u5f0f\u7f16\u7a0b\u7ec3\u4e00\u4e0b\u5185\u529f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : nthin0 <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 @AllanAG                                                             <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n
                    \n
                    \n
                     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : nthin0 <\/span>  <\/div>\n
                     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                                 @qiyuey \u516c\u53f8\u9879\u76ee\u4e0a kotlin \u53ef\u80fd\u6027\u4e0d\u5927\uff0c\u51c6\u5907\u62ff\u4e2a\u4eba\u9879\u76ee\u7ec3\u7ec3\u624b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
                  • \n","protected":false},"excerpt":{"rendered":"
                    Java CompletableF…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/159415"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=159415"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/159415\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=159415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=159415"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=159415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}