{"id":202781,"date":"2025-05-22T10:35:14","date_gmt":"2025-05-22T02:35:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202781\/"},"modified":"2025-05-22T10:35:14","modified_gmt":"2025-05-22T02:35:14","slug":"%e9%81%bf%e5%85%8d-java-%e5%87%bd%e6%95%b0%e5%9c%a8%e5%a4%9a%e7%ba%bf%e7%a8%8b%e7%8e%af%e5%a2%83%e4%b8%8b%e5%a4%b1%e6%95%88%e7%9a%84%e5%af%b9%e7%ad%96%e5%92%8c%e9%99%b7%e9%98%b1%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202781\/","title":{"rendered":"\u907f\u514d Java \u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5931\u6548\u7684\u5bf9\u7b56\u548c\u9677\u9631\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u907f\u514d Java \u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5931\u6548\u7684\u5bf9\u7b56\u548c\u9677\u9631\uff1f<\/h1>\n<p>\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u907f\u514d Java \u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5931\u6548\u7684\u5bf9\u7b56\u548c\u9677\u9631\uff1f\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p>\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\u7ef4\u62a4 Java \u51fd\u6570\u6709\u6548\u6027\u7684\u5bf9\u7b56\u5305\u62ec\uff1a\u4f7f\u7528\u7ebf\u7a0b\u5b89\u5168\u7c7b\u548c\u540c\u6b65\u673a\u5236\u9632\u6b62\u6570\u636e\u7ade\u6001\u6761\u4ef6\u3002\u4f7f\u7528 volatile \u5173\u952e\u5b57\u786e\u4fdd\u53d8\u91cf\u4fee\u6539\u5bf9\u6240\u6709\u7ebf\u7a0b\u53ef\u89c1\u3002\u907f\u514d\u5bf9\u8c61\u9038\u51fa\uff0c\u901a\u8fc7\u4f20\u9012\u4e0d\u53ef\u53d8\u5bf9\u8c61\u6216\u6b63\u786e\u5171\u4eab\u5bf9\u8c61\u6765\u89e3\u51b3\u3002\u907f\u514d\u4e0d\u53ef\u4e2d\u65ad\u64cd\u4f5c\uff0c\u6216\u5728\u6267\u884c\u524d\u68c0\u67e5\u7ebf\u7a0b\u4e2d\u65ad\u72b6\u6001\u3002\u91c7\u7528\u8fd9\u4e9b\u5bf9\u7b56\u6709\u52a9\u4e8e\u907f\u514d\u6570\u636e\u7ade\u6001\u6761\u4ef6\u3001\u672a\u53d1\u5e03\u5b57\u6bb5\u9519\u8bef\u3001\u5bf9\u8c61\u9038\u51fa\u548c\u4e0d\u53ef\u4e2d\u65ad\u64cd\u4f5c\u6b7b\u9501\uff0c\u4ece\u800c\u786e\u4fdd Java \u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729941213671ccedd83678.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u907f\u514d Java \u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5931\u6548\u7684\u5bf9\u7b56\u548c\u9677\u9631<\/strong><\/p>\n<p>\u591a\u7ebf\u7a0b\u7f16\u7a0b\u662f\u5e76\u884c\u6267\u884c\u4efb\u52a1\u7684\u5f3a\u5927\u6280\u672f\uff0c\u4f46\u5b83\u4e5f\u5e26\u6765\u4e86\u72ec\u7279\u7684\u6311\u6218\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u786e\u4fdd\u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u6b63\u786e\u5de5\u4f5c\u3002\u672c\u6587\u5c06\u8ba8\u8bba Java \u51fd\u6570\u5931\u6548\u7684\u5e38\u89c1\u539f\u56e0\u4ee5\u53ca\u907f\u514d\u8fd9\u4e9b\u9677\u9631\u6240\u9700\u7684\u5bf9\u7b56\u3002<\/p>\n<p><strong>1. \u6570\u636e\u7ade\u6001\u6761\u4ef6<\/strong><\/p>\n<p>\u6570\u636e\u7ade\u6001\u6761\u4ef6\u662f\u6307\u4e24\u4e2a\u6216\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u6570\u636e\u5e76\u5bfc\u81f4\u4e0d\u4e00\u81f4\u72b6\u6001\u7684\u60c5\u51b5\u3002\u5728 Java \u4e2d\uff0c\u8fd9\u901a\u5e38\u53d1\u751f\u5728\u975e\u7ebf\u7a0b\u5b89\u5168\u7684\u7c7b\u6216\u5bf9\u8c61\u4e0a\u3002<\/p>\n<p><strong>\u5bf9\u7b56\uff1a<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u7ebf\u7a0b\u5b89\u5168\u7684\u7c7b\u548c\u5bf9\u8c61\uff0c\u5982 <code>ConcurrentHashMap<\/code>\u3002<\/li>\n<li>\u901a\u8fc7\u540c\u6b65\u673a\u5236\uff0c\u5982\u4e92\u65a5\u9501\u6216 <code>synchronized<\/code> \u5757\uff0c\u4fdd\u62a4\u5bf9\u5171\u4eab\u6570\u636e\u7684\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<p><strong>2. \u672a\u53d1\u5e03\/\u5df2\u53d1\u5e03\u5b57\u6bb5<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5bf9\u975e volatile \u53d8\u91cf\u6240\u505a\u7684\u4fee\u6539\u53ef\u80fd\u4e0d\u4f1a\u7acb\u5373\u5bf9\u5176\u4ed6\u7ebf\u7a0b\u53ef\u89c1\u3002\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u672a\u53d1\u5e03\u5b57\u6bb5\u9519\u8bef\uff0c\u5176\u4e2d\u7ebf\u7a0b\u83b7\u53d6\u53d8\u91cf\u7684\u65e7\u503c\u3002<\/p>\n<p><strong>\u5bf9\u7b56\uff1a<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 volatile \u5173\u952e\u5b57\u58f0\u660e\u53d8\u91cf\uff0c\u8fd9\u6837\u4fee\u6539\u4f1a\u7acb\u5373\u5bf9\u6240\u6709\u7ebf\u7a0b\u53ef\u89c1\u3002<\/li>\n<\/ul>\n<p><strong>3. \u5bf9\u8c61\u9038\u51fa<\/strong><\/p>\n<p>\u5bf9\u8c61\u9038\u51fa\u662f\u6307\u67d0\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u4e86\u9003\u9038\u5f15\u7528\uff08\u5373\u5728\u5176\u4ed6\u7ebf\u7a0b\u521b\u5efa\u4e14\u81ea\u8eab\u7ebf\u7a0b\u65e0\u6cd5\u8bbf\u95ee\uff09\u7684\u5bf9\u8c61\u3002\u8fd9\u4f1a\u5bfc\u81f4\u7ebf\u7a0b\u4ee5\u4e0d\u53ef\u9884\u6d4b\u7684\u65b9\u5f0f\u5931\u8d25\u3002<\/p>\n<p><strong>\u5bf9\u7b56\uff1a<\/strong><\/p>\n<ul>\n<li>\u907f\u514d\u4ece\u4e00\u4e2a\u7ebf\u7a0b\u5411\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4f20\u9012\u5bf9\u5bf9\u8c61\u7684\u53ef\u53d8\u5f15\u7528\u3002<\/li>\n<li>\u4f7f\u7528\u4e0d\u53ef\u53d8\u5bf9\u8c61\u6216\u786e\u4fdd\u5bf9\u8c61\u5728\u591a\u4e2a\u7ebf\u7a0b\u4e4b\u95f4\u6b63\u786e\u5171\u4eab\u3002<\/li>\n<\/ul>\n<p><strong>4. \u4e0d\u53ef\u4e2d\u65ad\u64cd\u4f5c<\/strong><\/p>\n<p>\u4e00\u4e9b Java \u64cd\u4f5c\u53ef\u80fd\u662f\u4e0d\u53ef\u4e2d\u65ad\u7684\uff0c\u8fd9\u610f\u5473\u7740\u65e0\u6cd5\u4f7f\u7528 <code>Thread.interrupt()<\/code> \u4e2d\u65ad\u5b83\u4eec\u3002\u5982\u679c\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u4e0d\u53ef\u4e2d\u65ad\u64cd\u4f5c\uff0c\u5219\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u9700\u8981\u7b49\u5f85\u6b64\u64cd\u4f5c\u5b8c\u6210\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6b7b\u9501\u3002<\/p>\n<p><strong>\u5bf9\u7b56\uff1a<\/strong><\/p>\n<ul>\n<li>\u5c3d\u53ef\u80fd\u907f\u514d\u4f7f\u7528\u4e0d\u53ef\u4e2d\u65ad\u64cd\u4f5c\u3002<\/li>\n<li>\u5982\u679c\u5fc5\u987b\u4f7f\u7528\u4e0d\u53ef\u4e2d\u65ad\u64cd\u4f5c\uff0c\u8bf7\u5728\u6267\u884c\u524d\u68c0\u67e5\u7ebf\u7a0b\u7684\u4e2d\u65ad\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u7b80\u5355\u7684 Java \u7c7b <code>Counter<\/code>\uff0c\u7528\u4e8e\u7edf\u8ba1\u4e8b\u4ef6\u7684\u6570\u91cf\uff1a<\/p>\n<pre>public class Counter {\n\n    private int count;\n\n    public synchronized void increment() {\n        count++;\n    }\n\n}<\/pre>\n<p>\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\uff0c\u5982\u679c\u4e0d\u901a\u8fc7 <code>synchronized<\/code> \u5757\u540c\u6b65\u8bbf\u95ee <code>count<\/code>\uff0c\u5219\u53ef\u80fd\u4f1a\u51fa\u73b0\u6570\u636e\u7ade\u6001\u6761\u4ef6\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06 <code>increment()<\/code> \u65b9\u6cd5\u58f0\u660e\u4e3a <code>synchronized<\/code>\uff1a<\/p>\n<pre>public class Counter {\n\n    private volatile int count;\n\n    public synchronized void increment() {\n        count++;\n    }\n\n}<\/pre>\n<p>\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u539f\u5b50\u53d8\u91cf\u6765\u907f\u514d\u6570\u636e\u7ade\u6001\u6761\u4ef6\uff1a<\/p>\n<pre>import java.util.concurrent.atomic.AtomicInteger;\n\npublic class Counter {\n\n    private AtomicInteger count = new AtomicInteger();\n\n    public void increment() {\n        count.incrementAndGet();\n    }\n\n}<\/pre>\n<p>\u901a\u8fc7\u91c7\u53d6\u672c\u6587\u4e2d\u6982\u8ff0\u7684\u5bf9\u7b56\uff0c\u60a8\u53ef\u4ee5\u907f\u514d Java \u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5931\u6548\uff0c\u786e\u4fdd\u60a8\u7684\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u6b63\u786e\u4e14\u53ef\u9760\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u907f\u514d Java \u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883&#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-202781","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202781","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=202781"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202781\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}