{"id":203064,"date":"2025-05-22T12:10:12","date_gmt":"2025-05-22T04:10:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203064\/"},"modified":"2025-05-22T12:10:12","modified_gmt":"2025-05-22T04:10:12","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e4%b8%ad%e5%bc%82%e5%b8%b8%e7%9a%84%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203064\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u5f02\u5e38\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u5f02\u5e38\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f<\/h1>\n<p><span style=\"font-size: 15px\">\u6709\u5fd7\u8005\uff0c\u4e8b\u7adf\u6210\uff01\u5982\u679c\u4f60\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u90a3\u4e48\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u5f02\u5e38\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\uff1f\u300b<\/span>\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff01\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/span><\/p>\n<p>\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u6700\u4f73\u5f02\u5e38\u5b9e\u8df5\u662f\u4f7f\u7528\u6570\u636e\u7c7b\u578b\u8868\u793a\u5f02\u5e38\uff0c\u800c\u4e0d\u662f\u4f20\u7edf\u7684\u5f02\u5e38\u673a\u5236\uff0c\u4ee5\u63d0\u9ad8\u7c7b\u578b\u5b89\u5168\u6027\u3001\u53ef\u7ec4\u5408\u6027\u548c\u53ef\u9884\u6d4b\u6027\u3002\u5177\u4f53\u5b9e\u8df5\u5305\u62ec\uff1a\u521b\u5efa\u660e\u786e\u4e14\u7c7b\u578b\u5b89\u5168\u7684\u5f02\u5e38\u7c7b\u578b\u3002\u4f7f\u5176\u53ef\u9884\u6d4b\uff0c\u6e05\u695a\u5730\u544a\u77e5\u8c03\u7528\u8005\u53ef\u80fd\u53d1\u751f\u7684\u9519\u8bef\u3002\u4f7f\u7528\u6570\u636e\u7c7b\u578b\uff08\u5982 Either\u3001Result\uff09\u8868\u793a\u5f02\u5e38\u3002\u9075\u5faa DRY \u539f\u5219\uff0c\u5bf9\u4e8e\u5e38\u89c1\u5f02\u5e38\u60c5\u51b5\u4f7f\u7528\u901a\u7528\u51fd\u6570\u6216\u7c7b\u578b\u5904\u7406\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1730034410671e3aea5bc53.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u5f02\u5e38\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p>Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u9f13\u52b1\u4f7f\u7528\u6570\u636e\u7c7b\u578b\u6765\u8868\u793a\u5f02\u5e38\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u4f20\u7edf\u7684\u5f02\u5e38\u673a\u5236\u3002\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u597d\u5904\uff1a<\/p>\n<ul>\n<li><strong>\u7c7b\u578b\u5b89\u5168\uff1a<\/strong>\u5b83\u5f3a\u5236\u7a0b\u5e8f\u5458\u660e\u786e\u5904\u7406\u6f5c\u5728\u7684\u5f02\u5e38\uff0c\u4ece\u800c\u589e\u5f3a\u7c7b\u578b\u5b89\u5168\u6027\u3002<\/li>\n<li><strong>\u53ef\u7ec4\u5408\u6027\uff1a<\/strong>\u5f02\u5e38\u7c7b\u578b\u53ef\u4ee5\u4e0e\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u4e00\u8d77\u4f7f\u7528\uff0c\u4ece\u800c\u7b80\u5316\u51fd\u6570\u7684\u7ec4\u5408\u3002<\/li>\n<li><strong>\u53ef\u9884\u6d4b\u6027\uff1a<\/strong>\u5f02\u5e38\u7c7b\u578b\u5411\u8c03\u7528\u8005\u660e\u786e\u8868\u793a\u51fd\u6570\u53ef\u80fd\u53d1\u751f\u7684\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b Java \u51fd\u6570\uff0c\u5b83\u5c06\u6574\u6570\u9664\u4ee5\u53e6\u4e00\u4e2a\u6574\u6570\uff1a<\/p>\n<pre>public static int divide(int numerator, int denominator) {\n    if (denominator == 0) {\n        throw new IllegalArgumentException(\"Cannot divide by zero\");\n    }\n    return numerator \/ denominator;\n}<\/pre>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Either \u7c7b\u578b\u7684\u5f02\u5e38\u6570\u636e\u8868\u793a\u91cd\u5199\u6b64\u51fd\u6570\uff1a<\/p>\n<pre>import java.util.Optional;\n\npublic static Either&lt;String, Integer&gt; safeDivide(int numerator, int denominator) {\n    if (denominator == 0) {\n        return Either.left(\"Cannot divide by zero\");\n    }\n    return Either.right(numerator \/ denominator);\n}<\/pre>\n<p><strong>\u6700\u4f73\u5b9e\u8df5\uff1a<\/strong><\/p>\n<p>\u5728\u4f7f\u7528\u51fd\u6570\u5f0f\u5f02\u5e38\u5b9e\u8df5\u65f6\uff0c\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\u5f88\u91cd\u8981\uff1a<\/p>\n<ul>\n<li><strong>\u521b\u5efa\u660e\u786e\u7684\u5f02\u5e38\u7c7b\u578b\uff1a<\/strong>\u6bcf\u4e2a\u5f02\u5e38\u60c5\u51b5\u5e94\u7531\u4e00\u4e2a\u660e\u786e\u7684\u5f02\u5e38\u7c7b\u578b\u8868\u793a\u3002<\/li>\n<li><strong>\u4f7f\u5176\u7c7b\u578b\u5b89\u5168\uff1a<\/strong>\u5f02\u5e38\u7c7b\u578b\u5e94\u5305\u542b\u6240\u6709\u5fc5\u9700\u7684\u4fe1\u606f\uff0c\u4ee5\u4fbf\u6b63\u786e\u5904\u7406\u5f02\u5e38\u3002<\/li>\n<li><strong>\u4f7f\u5176\u53ef\u9884\u6d4b\uff1a<\/strong>\u51fd\u6570\u7684\u5f02\u5e38\u7c7b\u578b\u5e94\u6e05\u695a\u5730\u5411\u8c03\u7528\u8005\u8bf4\u660e\u53ef\u80fd\u53d1\u751f\u7684\u9519\u8bef\u3002<\/li>\n<li><strong>\u4f7f\u7528\u6570\u636e\u7c7b\u578b\u8868\u793a\u5f02\u5e38\uff1a<\/strong>\u4f7f\u7528 Either\u3001Result \u7b49\u7c7b\u578b\u6cdb\u578b\u6765\u8868\u793a\u5f02\u5e38\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u5f02\u5e38\u5bf9\u8c61\u3002<\/li>\n<li><strong>\u9075\u5faa DRY \u539f\u5219\uff1a<\/strong>\u5bf9\u4e8e\u5e38\u89c1\u5f02\u5e38\u60c5\u51b5\uff0c\u521b\u5efa\u901a\u7528\u51fd\u6570\u6216\u7c7b\u578b\u6765\u5904\u7406\u5b83\u4eec\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u5f02\u5e38\u7684\u6700\u4f73\u5b9e\u8df5\u662f\u4ec0\u4e48\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\u4e8ejava,\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u5f02\u5e38\u7684\u6700\u4f73\u5b9e&#46;&#46;&#46;<\/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-203064","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203064","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=203064"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203064\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}