{"id":297186,"date":"2024-05-20T16:20:56","date_gmt":"2024-05-20T08:20:56","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/297186.html"},"modified":"2024-05-20T16:21:10","modified_gmt":"2024-05-20T08:21:10","slug":"java-%e6%97%b6%e9%97%b4%e6%a0%bc%e5%bc%8f%e7%9a%84%e8%bd%ac%e6%8d%a2%e5%a6%82%e4%bd%95%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/297186.html","title":{"rendered":"java \u65f6\u95f4\u683c\u5f0f\u7684\u8f6c\u6362\u5982\u4f55\u64cd\u4f5c"},"content":{"rendered":"

\"java<\/p>\n

\u65f6\u95f4\u683c\u5f0f\u7684\u8f6c\u6362\u5728Java\u5f00\u53d1\u4e2d\u662f\u4e00\u4e2a\u5e38\u89c1\u4e14\u91cd\u8981\u7684\u4efb\u52a1\uff0c\u4e3b\u8981\u6d89\u53ca\u5230\u4e86DateFormat<\/code>\u7c7b\u3001SimpleDateFormat<\/code>\u7c7b\u3001DateTimeFormatter<\/code>\u7c7b\u7b49\u3002\u6838\u5fc3\u89c2\u70b9\u5305\u62ec\uff1a\u4f7f\u7528SimpleDateFormat<\/code>\u7c7b\u8fdb\u884c\u6a21\u5f0f\u5316\u7684\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u3001\u4f7f\u7528DateTimeFormatter<\/code>\u7c7b\u5bf9Java 8\u4e2d\u7684\u65e5\u671f\u65f6\u95f4\u7c7b\u578b\u8fdb\u884c\u683c\u5f0f\u5316\u548c\u89e3\u6790<\/strong>\u3002\u5176\u4e2d\uff0c\u4f7f\u7528SimpleDateFormat<\/code>\u7c7b\u8fdb\u884c\u8f6c\u6362<\/strong>\u662f\u6700\u4e3a\u5e38\u89c1\u7684\u4e00\u79cd\u65b9\u5f0f\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u65b9\u5f0f\u6765\u5b9a\u4e49\u65e5\u671f\u65f6\u95f4\u7684\u683c\u5f0f\u6a21\u677f\uff0c\u5982\uff1a"yyyy-MM-dd HH:mm:ss"\u4ee3\u8868\u4e86\u5b8c\u6574\u7684\u65e5\u671f\u548c\u65f6\u95f4\u3002<\/p>\n<\/p>\n

\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u901a\u8fc7\u8be6\u5b9e\u7684\u5185\u5bb9\u6765\u6df1\u5165\u63a2\u8ba8Java\u4e2d\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u7684\u5404\u4e2a\u65b9\u9762\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528SIMPLEDATEFORMAT<\/code>\u7c7b<\/h3>\n<\/p>\n

SimpleDateFormat<\/code>\u662fDateFormat<\/code>\u7684\u4e00\u4e2a\u5177\u4f53\u5b50\u7c7b\uff0c\u7528\u4e8e\u4ee5\u533a\u57df\u8bbe\u7f6e\u654f\u611f\u7684\u65b9\u5f0f\u683c\u5f0f\u5316\u548c\u89e3\u6790\u65e5\u671f\u3002\u901a\u8fc7\u7ed9\u5b9a\u7684\u6a21\u5f0f\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u5b9e\u73b0\u65e5\u671f\u65f6\u95f4\u7684\u8f6c\u6362\u3002<\/p>\n<\/p>\n

    \n
  • \u9996\u5148\uff0c\u8981\u5b9e\u73b0\u65f6\u95f4\u683c\u5f0f\u7684\u8f6c\u6362\uff0c\u9700\u5b9e\u4f8b\u5316SimpleDateFormat<\/code>\u5bf9\u8c61\uff0c\u5e76\u6307\u5b9a\u9700\u8981\u7684\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u60f3\u8981\u7684\u65e5\u671f\u683c\u5f0f\u662f"yyyy-MM-dd"\uff0c\u5219\u53ef\u4ee5\u8fd9\u6837\u521b\u5efaSimpleDateFormat<\/code>\u5bf9\u8c61\uff1aSimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");<\/code><\/li>\n
  • \u5176\u6b21\uff0c\u4f7f\u7528SimpleDateFormat<\/code>\u5bf9\u8c61\u7684format<\/code>\u65b9\u6cd5\u6765\u683c\u5f0f\u5316\u65e5\u671f\u65f6\u95f4\u5bf9\u8c61\uff08\u5982Date<\/code>\uff09\uff0c\u6216\u4f7f\u7528parse<\/code>\u65b9\u6cd5\u5c06\u7b26\u5408\u6a21\u5f0f\u7684\u5b57\u7b26\u4e32\u89e3\u6790\u4e3aDate<\/code>\u5bf9\u8c61\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cparse<\/code>\u65b9\u6cd5\u53ef\u80fd\u4f1a\u629b\u51faParseException<\/code>\uff0c\u56e0\u6b64\u9700\u8981\u8fdb\u884c\u5f02\u5e38\u5904\u7406\u3002<\/li>\n<\/ul>\n

    \u4e8c\u3001JAVA 8\u4e2d\u7684DATETIMEFORMATTER<\/code><\/h3>\n<\/p>\n

    Java 8\u5f15\u5165\u4e86\u5168\u65b0\u7684\u65f6\u95f4\u65e5\u671fAPI\uff0c\u5176\u4e2dDateTimeFormatter<\/code>\u7c7b\u7528\u4e8e\u66ff\u4ee3\u65e7\u7248\u7684SimpleDateFormat<\/code>\uff0c\u63d0\u4f9b\u4e86\u66f4\u52a0\u5f3a\u5927\u4e14\u7ebf\u7a0b\u5b89\u5168\u7684\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u5316\u548c\u89e3\u6790\u529f\u80fd\u3002<\/p>\n<\/p>\n

      \n
    • \u4f7f\u7528DateTimeFormatter<\/code>\u7684\u4e00\u4e2a\u4e3b\u8981\u4f18\u70b9\u662f\u5b83\u7684\u4e0d\u53ef\u53d8\u6027\u548c\u7ebf\u7a0b\u5b89\u5168\u6027\uff0c\u8fd9\u610f\u5473\u7740\u53ef\u4ee5\u5b89\u5168\u5730\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\u4f7f\u7528\u540c\u4e00\u4e2aDateTimeFormatter<\/code>\u5b9e\u4f8b\u800c\u65e0\u9700\u62c5\u5fe7\u6570\u636e\u7ade\u4e89\u6216\u4e0d\u4e00\u81f4\u95ee\u9898\u3002<\/li>\n
    • DateTimeFormatter<\/code>\u4e0d\u4ec5\u53ef\u4ee5\u7528\u4e8e\u57fa\u672c\u7684\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\uff0c\u8fd8\u63d0\u4f9b\u4e86\u590d\u6742\u7684\u683c\u5f0f\u5316\u9009\u9879\uff0c\u5982\u533a\u57df\u8bbe\u7f6e\u654f\u611f\u7684\u683c\u5f0f\u5316\u3002\u6bd4\u5982\uff0c\u53ef\u4ee5\u901a\u8fc7DateTimeFormatter.ofPattern(String pattern)<\/code>\u521b\u5efa\u5177\u6709\u7279\u5b9a\u6a21\u5f0f\u7684\u683c\u5f0f\u5668\u3002\u6b64\u5916\uff0cDateTimeFormatter<\/code>\u8fd8\u5185\u7f6e\u4e86\u591a\u79cd\u6807\u51c6\u683c\u5f0f\uff0c\u5982ISO_LOCAL_DATE<\/code>\uff0c\u76f4\u63a5\u7528\u4e8e\u683c\u5f0f\u5316\u548c\u89e3\u6790\u3002<\/li>\n<\/ul>\n

      \u4e09\u3001\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u7684\u5e94\u7528\u573a\u666f<\/h3>\n<\/p>\n

      \u5728Java\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u65f6\u95f4\u683c\u5f0f\u7684\u8f6c\u6362\u6d89\u53ca\u5230\u4f17\u591a\u5e94\u7528\u573a\u666f\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u65e5\u5fd7\u8bb0\u5f55\u3001\u7528\u6237\u754c\u9762\u65f6\u95f4\u5c55\u793a\u3001\u6570\u636e\u5e93\u65f6\u95f4\u6233\u5b58\u50a8\u7b49\u3002<\/p>\n<\/p>\n

        \n
      • \u5728\u65e5\u5fd7\u8bb0\u5f55\u4e2d\uff0c\u7edf\u4e00\u7684\u65f6\u95f4\u683c\u5f0f\u6709\u52a9\u4e8e\u65e5\u5fd7\u4fe1\u606f\u7684\u5feb\u901f\u9605\u8bfb\u548c\u95ee\u9898\u5b9a\u4f4d\u3002<\/li>\n
      • \u5728\u7528\u6237\u754c\u9762\u4e0a\uff0c\u6839\u636e\u7528\u6237\u7684\u5730\u7406\u4f4d\u7f6e\u548c\u504f\u597d\u5c55\u793a\u76f8\u5e94\u683c\u5f0f\u7684\u65e5\u671f\u65f6\u95f4\u53ef\u4ee5\u6781\u5927\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002<\/li>\n
      • \u5f53\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u65f6\uff0c\u901a\u5e38\u9700\u8981\u5c06\u5e94\u7528\u4e2d\u7684\u65e5\u671f\u65f6\u95f4\u5bf9\u8c61\u8f6c\u6362\u4e3a\u6570\u636e\u5e93\u53ef\u4ee5\u8bc6\u522b\u7684\u65f6\u95f4\u6233\u683c\u5f0f\uff0c\u6216\u8005\u5c06\u6570\u636e\u5e93\u65f6\u95f4\u6233\u8f6c\u6362\u4e3a\u7528\u6237\u53cb\u597d\u7684\u663e\u793a\u683c\u5f0f\u3002<\/li>\n<\/ul>\n

        \u56db\u3001\u6ce8\u610f\u4e8b\u9879\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h3>\n<\/p>\n

        \u5c3d\u7ba1Java\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u5de5\u5177\uff0c\u4f46\u5728\u5b9e\u9645\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u4ecd\u9700\u6ce8\u610f\u4e00\u4e9b\u5173\u952e\u70b9\u4ee5\u907f\u514d\u5e38\u89c1\u9519\u8bef\u3002<\/p>\n<\/p>\n

          \n
        • \u6ce8\u610f\u7ebf\u7a0b\u5b89\u5168<\/strong>\uff1a\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u4f7f\u7528SimpleDateFormat<\/code>\u65f6\uff0c\u5fc5\u987b\u786e\u4fdd\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u5b9e\u4f8b\uff0c\u6216\u8005\u4f7f\u7528\u7ebf\u7a0b\u5b89\u5168\u7684DateTimeFormatter<\/code>\u3002<\/li>\n
        • \u8003\u8651\u65f6\u533a\u5f71\u54cd<\/strong>\uff1a\u5728\u8fdb\u884c\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u65f6\uff0c\u8003\u8651\u5230\u65f6\u533a\u7684\u5f71\u54cd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u9700\u8981\u660e\u786e\u683c\u5f0f\u5316\u548c\u89e3\u6790\u7684\u65e5\u671f\u65f6\u95f4\u662f\u57fa\u4e8e\u54ea\u4e2a\u65f6\u533a\u7684\u3002<\/li>\n
        • \u6709\u6548\u5730\u5904\u7406\u5f02\u5e38<\/strong>\uff1a\u5728\u4f7f\u7528parse<\/code>\u65b9\u6cd5\u8fdb\u884c\u65f6\u95f4\u89e3\u6790\u65f6\uff0c\u5e94\u59a5\u5584\u5904\u7406\u53ef\u80fd\u629b\u51fa\u7684ParseException<\/code>\uff0c\u786e\u4fdd\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u3002<\/li>\n<\/ul>\n

          \u901a\u8fc7\u9075\u5faa\u4e0a\u8ff0\u6307\u5357\u548c\u6700\u4f73\u5b9e\u8df5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5728Java\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5904\u7406\u65f6\u95f4\u683c\u5f0f\u7684\u8f6c\u6362\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n

          \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

          \u5982\u4f55\u5c06Date\u5bf9\u8c61\u8f6c\u6362\u4e3a\u6307\u5b9a\u683c\u5f0f\u7684\u65f6\u95f4\u5b57\u7b26\u4e32\uff1f<\/strong><\/p>\n

          \u60a8\u53ef\u4ee5\u4f7f\u7528SimpleDateFormat\u7c7b\u6765\u5c06Date\u5bf9\u8c61\u8f6c\u6362\u4e3a\u6307\u5b9a\u683c\u5f0f\u7684\u65f6\u95f4\u5b57\u7b26\u4e32\u3002\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2aSimpleDateFormat\u5bf9\u8c61\uff0c\u5e76\u6307\u5b9a\u60a8\u60f3\u8981\u7684\u65f6\u95f4\u683c\u5f0f\u3002\u7136\u540e\uff0c\u4f7f\u7528\u8be5\u5bf9\u8c61\u7684format\u65b9\u6cd5\u5c06Date\u5bf9\u8c61\u8f6c\u6362\u4e3a\u65f6\u95f4\u5b57\u7b26\u4e32\u3002<\/p>\n

          \u5982\u4f55\u5c06\u65f6\u95f4\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3aDate\u5bf9\u8c61\uff1f<\/strong><\/p>\n

          \u8981\u5c06\u65f6\u95f4\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3aDate\u5bf9\u8c61\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528SimpleDateFormat\u7c7b\u3002\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2aSimpleDateFormat\u5bf9\u8c61\uff0c\u5e76\u6307\u5b9a\u60a8\u8981\u89e3\u6790\u7684\u65f6\u95f4\u683c\u5f0f\u3002\u7136\u540e\uff0c\u4f7f\u7528\u8be5\u5bf9\u8c61\u7684parse\u65b9\u6cd5\u5c06\u65f6\u95f4\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3aDate\u5bf9\u8c61\u3002<\/p>\n

          \u5728Java\u4e2d\u5982\u4f55\u8fdb\u884c\u4e0d\u540c\u65f6\u533a\u4e4b\u95f4\u7684\u65f6\u95f4\u8f6c\u6362\uff1f<\/strong><\/p>\n

          \u82e5\u8981\u5728\u4e0d\u540c\u65f6\u533a\u4e4b\u95f4\u8fdb\u884c\u65f6\u95f4\u8f6c\u6362\uff0c\u53ef\u4ee5\u4f7f\u7528Java 8\u4e2d\u5f15\u5165\u7684java.time\u5305\u4e2d\u7684\u7c7b\u3002\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2aZonedDateTime\u5bf9\u8c61\uff0c\u6307\u5b9a\u539f\u59cb\u65f6\u533a\u548c\u65f6\u95f4\u3002\u7136\u540e\uff0c\u4f7f\u7528withZoneSameInstant\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u76ee\u6807\u65f6\u533a\u7684ZonedDateTime\u5bf9\u8c61\u3002\u6700\u540e\uff0c\u4f7f\u7528DateTimeFormatter\u7c7b\u5c06\u5176\u683c\u5f0f\u5316\u4e3a\u5b57\u7b26\u4e32\uff0c\u6216\u8005\u5c06\u5176\u8f6c\u6362\u4e3aDate\u5bf9\u8c61\u3002\u8bf7\u6ce8\u610f\uff0c\u5fc5\u987b\u5b89\u88c5Java 8\u6216\u66f4\u9ad8\u7248\u672c\u624d\u80fd\u4f7f\u7528java.time\u5305\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u65f6\u95f4\u683c\u5f0f\u7684\u8f6c\u6362\u5728Java\u5f00\u53d1\u4e2d\u662f\u4e00\u4e2a\u5e38\u89c1\u4e14\u91cd\u8981\u7684\u4efb\u52a1\uff0c\u4e3b\u8981\u6d89\u53ca\u5230\u4e86DateFormat\u7c7b\u3001SimpleDate […]","protected":false},"author":3,"featured_media":297198,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/297186"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=297186"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/297186\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/297198"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=297186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=297186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=297186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}