{"id":203071,"date":"2025-05-22T10:01:25","date_gmt":"2025-05-22T02:01:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203071\/"},"modified":"2025-05-22T10:01:25","modified_gmt":"2025-05-22T02:01:25","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%8f%8d%e5%ba%94%e5%bc%8f%e7%bc%96%e7%a8%8b%e6%9d%a5%e5%a4%84%e7%90%86-java-%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e4%b8%ad%e7%9a%84%e5%bc%82%e5%b8%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203071\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u6765\u5904\u7406 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u5f02\u5e38\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u6765\u5904\u7406 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u5f02\u5e38\uff1f<\/h1>\n

\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u6765\u5904\u7406 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u5f02\u5e38\uff1f\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01<\/p>\n

\u901a\u8fc7\u4f7f\u7528 Single \u7c7b\u578b\u8868\u793a\u7ed3\u679c\uff0c\u5e76\u4f7f\u7528 onErrorResumeNext\u3001switchIfError\u3001retry \u548c subscribe \u7b49\u8fd0\u7b97\u7b26\uff0c\u53ef\u4ee5\u5728 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u5904\u7406\u5f02\u5e38\u3002\u8fd9\u4e9b\u8fd0\u7b97\u7b26\u5206\u522b\u53ef\u5904\u7406\u9519\u8bef\uff0c\u8f6c\u6362\u503c\uff0c\u91cd\u8bd5\u6267\u884c\u548c\u8ba2\u9605\u5904\u7406\u7ed3\u679c\u3002\u901a\u8fc7\u4e00\u4e2a\u5b9e\u6218\u6848\u4f8b\uff0c\u8bf4\u660e\u4e86\u5982\u4f55\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u6765\u5904\u7406\u53ef\u80fd\u629b\u51fa\u5f02\u5e38\u7684\u51fd\u6570\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u5728 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u5904\u7406\u5f02\u5e38\uff1f<\/strong><\/p>\n

\u53cd\u5e94\u5f0f\u7f16\u7a0b\u662f\u4e00\u79cd\u5904\u7406\u5f02\u6b65\u6570\u636e\u6d41\u7684\u7f16\u7a0b\u8303\u4f8b\uff0c\u4f7f\u5f00\u53d1\u8005\u80fd\u591f\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u8f7b\u677e\u5730\u5904\u7406\u5f02\u5e38\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u5904\u7406 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u5f02\u5e38\u7684\u5206\u6b65\u6307\u5357\uff1a<\/p>\n

    \n
  1. \u4f7f\u7528 Single \u7c7b\u578b\u8868\u793a\u53ef\u80fd\u7684\u7ed3\u679c\uff1a<\/strong>
    \u4f7f\u7528 Single<\/code> \u7c7b\u578b\u6765\u8868\u793a\u53ef\u80fd\u4f1a\u53d1\u51fa\u6210\u529f\u503c\u6216\u9519\u8bef\u7684\u5f02\u6b65\u8fd0\u7b97\u3002<\/li>\n<\/ol>\n
    Single<Integer> single = Single.just(10);<\/pre>\n
      \n
    1. \u4f7f\u7528 onErrorResumeNext<\/code> \u5904\u7406\u9519\u8bef\uff1a<\/strong>
      onErrorResumeNext<\/code> \u8fd0\u7b97\u7b26\u5141\u8bb8\u4f60\u6307\u5b9a\u4e00\u4e2a\u5907\u7528 Single<\/code>\uff0c\u5f53\u539f\u59cb Single<\/code> \u9047\u5230\u9519\u8bef\u65f6\uff0c\u4f1a\u53d1\u51fa\u8be5\u5907\u7528 Single<\/code> \u7684\u503c\u3002<\/li>\n<\/ol>\n
      Single<Integer> singleWithBackup = single.onErrorResumeNext(throwable -> Single.just(0));<\/pre>\n
        \n
      1. \u4f7f\u7528 switchIfError<\/code> \u5904\u7406\u9519\u8bef\u5e76\u8f6c\u6362\u503c\uff1a<\/strong>
        switchIfError<\/code> \u8fd0\u7b97\u7b26\u4e0e onErrorResumeNext<\/code> \u7c7b\u4f3c\uff0c\u4f46\u5b83\u5141\u8bb8\u4f60\u8f6c\u6362\u9519\u8bef\u503c\u5e76\u53d1\u51fa\u65b0\u7684\u503c\u3002<\/li>\n<\/ol>\n
        Single<String> singleWithSwitch = single.switchIfError(throwable -> Single.just(\"Error occurred\"));<\/pre>\n
          \n
        1. \u7528 retry<\/code> \u5c1d\u8bd5\u91cd\u65b0\u6267\u884c\uff1a<\/strong>
          retry<\/code> \u8fd0\u7b97\u7b26\u5141\u8bb8\u4f60\u91cd\u65b0\u5c1d\u8bd5\u5931\u8d25\u7684 Single<\/code>\u3002\u4f60\u53ef\u4ee5\u6307\u5b9a\u91cd\u8bd5\u6b21\u6570\u6216\u91cd\u8bd5\u65f6\u95f4\u95f4\u9694\u3002<\/li>\n<\/ol>\n
          Single<Integer> singleWithRetry = single.retry(3);<\/pre>\n
            \n
          1. \u4f7f\u7528 subscribe<\/code> \u8ba2\u9605\u5904\u7406\u7ed3\u679c\uff1a<\/strong>
            \u901a\u8fc7\u8c03\u7528 subscribe<\/code> \u65b9\u6cd5\u5728 Single<\/code> \u4e0a\u6ce8\u518c\u89c2\u5bdf\u8005\uff0c\u4ee5\u5904\u7406\u6210\u529f\u503c\u6216\u9519\u8bef\u3002<\/li>\n<\/ol>\n
            singleWithRetry.subscribe(\n    value -> System.out.println(\"Received value: \" + value),\n    error -> System.out.println(\"Error occurred: \" + error.getMessage())\n);<\/pre>\n
            \u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n
            \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u53ef\u80fd\u629b\u51fa ArithmeticException<\/code> \u7684\u51fd\u6570 divideByZero<\/code>\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u6765\u5904\u7406\u6b64\u5f02\u5e38\uff1a<\/p>\n
            Single<Integer> singleWithDivide = Single.fromCallable(() -> divideByZero(10, 0));\n\nsingleWithDivide\n    .onErrorResumeNext(throwable -> Single.just(0))\n    .subscribe(\n        value -> System.out.println(\"Received value: \" + value),\n        error -> System.out.println(\"Error occurred: \" + error.getMessage())\n    );<\/pre>\n
            \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f53 divideByZero<\/code> \u629b\u51fa ArithmeticException<\/code> \u65f6\uff0conErrorResumeNext<\/code> \u8fd0\u7b97\u7b26\u4f1a\u8fd4\u56de 0\uff0c\u4ece\u800c\u907f\u514d\u7a0b\u5e8f\u5d29\u6e83\u3002<\/p>\n
            \u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u6765\u5904\u7406 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u5f02\u5e38\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u5f02\u5e38\u5904\u7406,\u54cd\u5e94\u5f0f\u7f16\u7a0b\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u5982\u4f55\u4f7f\u7528\u53cd\u5e94\u5f0f\u7f16\u7a0b\u6765\u5904\u7406 Jav...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203071","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203071"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203071\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}