{"id":1339,"date":"2018-03-23T16:21:01","date_gmt":"2018-03-23T08:21:01","guid":{"rendered":"https:\/\/www.yeetrack.com\/?p=1339"},"modified":"2018-03-23T16:21:01","modified_gmt":"2018-03-23T08:21:01","slug":"java-int%e6%ba%a2%e5%87%ba%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/www.yeetrack.com\/?p=1339","title":{"rendered":"Java int\u6ea2\u51fa\u95ee\u9898"},"content":{"rendered":"<p>\u6700\u8fd1\u5728\u6d4b\u8bd5\u4ee3\u7801\u65f6\uff0c\u53d1\u73b0\u4e00\u4e2abug\uff0c\u5230\u6d4b\u8bd5\u7684\u6700\u540e\u9636\u6bb5\u624d\u53d1\u73b0\uff0c\u6bd4\u8f83\u5bb9\u6613\u5ffd\u7565\u3002\u8bb0\u5f55\u4e0b\u6765\uff0c\u4ee5\u81ea\u7701\u3002<br \/>\n\u7b80\u5355\u8bf4\u4e00\u4e0b\u4ee3\u7801\u8981\u5b9e\u73b0\u7684\u529f\u80fd\uff0c\u4e00\u4e2a\u51fd\u6570\uff0c\u5165\u53c2\u662f\u4e00\u4e2a\u6574\u578b\u6570\u5b57lastTime\uff0c\u4ee3\u8868\u6301\u7eed\u65f6\u95f4\uff08\u5355\u4f4d\u662f\u5206\u949f\uff09\uff1b\u51fd\u6570\u529f\u80fd\u662f\u8981\u8ba1\u7b97\u4ee5\u5f53\u524d\u65f6\u95f4\u4e3a\u8d77\u70b9\uff0clastTime\u5206\u949f\u4e4b\u540e\u7684\u65f6\u95f4\u70b9\uff0c\u5c01\u88c5\u6210\u4e00\u5b9a\u7684\u6570\u636e\u7ed3\u6784\u8fd4\u56de\u51fa\u6765\u3002<br \/>\n<!--more--><\/p>\n<pre><code>\/**\n * \u6839\u636e\u65f6\u95f4\u8bbe\u7f6e\u4e8b\u4ef6\u7684\u65f6\u95f4\u5b57\u6bb5\n * @param lastTime \u6301\u7eed\u65f6\u95f4\n * @return\n *\/\nprivate TimePeriod.Builder setTimePeriods(int lastTime) {\n    Date startDate = new Date();\n    Date endDate = new Date(startDate.getTime() + lastTime * 1000 * 60);\n   ...\n\n    return timePeriodBuilder;\n} \n<\/code><\/pre>\n<p>\u7b2c\u4e00\u904d\u529f\u80fd\u6d4b\u8bd5\u65f6\uff0clastTime\u8fd9\u4e2a\u53c2\u6570\u4ece\u914d\u7f6e\u6587\u4ef6\u4e2d\u968f\u673a\u8bfb\u53d6\u4e00\u4e2a\uff0c\u6821\u9a8c\u7ed3\u679c\u6ca1\u6709\u95ee\u9898\uff0c\u4e5f\u5c31\u6ca1\u6709\u5173\u6ce8\uff1b\u4f46\u662f\u81ea\u52a8\u5316\u6267\u884c\u540e\uff0c\u53d1\u73b0\u5f88\u5c0f\u7684\u51e0\u7387\u6709case\u5931\u8d25\u7684\u60c5\u51b5\uff0c\u5931\u8d25\u7684\u539f\u56e0\u5c31\u662f\u8fd9\u4e2a\u51fd\u6570\u8ba1\u7b97\u51fa\u6765\u7684\u7ed3\u679c\u548c\u6d4b\u8bd5\u4ee3\u7801\u81ea\u5df1\u8ba1\u7b97\u51fa\u6765\u7684\u7ed3\u679c\u4e0d\u5339\u914d\uff0c\u5f53\u65f6lastTime\u8fd9\u4e2a\u53c2\u6570\u4f20\u5165\u7684\u503c\u4e3a150000.<\/p>\n<p>\u6709\u95ee\u9898\uff0c\u90a3\u5c31\u4e00\u6b65\u6b65\u6267\u884c\u6765\u770b\uff0c\u5199\u4e86\u4e2amain\u51fd\u6570\uff0c\u76f4\u63a5\u8c03\u7528\u5f00\u53d1\u7684\u51fd\u6570\uff0c\u6267\u884c\u5230<code>Date endDate = new Date(startDate.getTime() + lastTime * 1000 * 60);<\/code>\u8fd9\u4e00\u6b65\u65f6\uff0c\u53d1\u73b0<code>endDate<\/code>\u7684\u7ed3\u679c\u600e\u4e48\u4e5f\u5bf9\u4e0d\u4e0a\uff0c\u521d\u59cb\u4e00\u770b\u5f53\u524d\u7684\u65f6\u95f4\u6233 + \u6301\u7eed\u65f6\u95f4(\u5206\u949f) * 60 * 1000\uff0c\u4e5f\u5c31\u662f\u7ed3\u675f\u65f6\u523b\u7684\u65f6\u95f4\u6233\uff0c\u6ca1\u95ee\u9898\uff1b\u540e\u6765\u81ea\u5df1\u624b\u52a8\u8ba1\u7b97<code>lastTime * 1000 * 60<\/code>\u7684\u503c\u624d\u53d1\u73b0\u4e0d\u5bf9\uff0c\u624d\u610f\u8bc6\u5230lastTime\u8fd9\u4e2a\u53c2\u6570\u662f\u6574\u578b\u7c7b\u578b\uff0c\u8fd9\u6837\u8ba1\u7b97\u6ea2\u51fa\u4e86\uff0c\u5bfc\u81f4\u7ed3\u679c\u6709\u95ee\u9898\u3002<\/p>\n<p>Java\u8bed\u8a00\u91cc\u6574\u578b\u6570\u5b57\u5360\u75284\u4e2a\u5b57\u8282\uff0c\u8868\u793a\u7684\u8303\u56f4\u4e3a-2^31=-2147483648\u52302^31=2147483647\uff0c\u800c150000 * 60 * 1000 = 9000000000\uff0c\u660e\u663e\u6ea2\u51fa\u4e86\u3002\u4e0a\u62a5\u95ee\u9898\uff0c\u5f00\u53d1\u628alastTime\u4eceint\u6362\u6210long\uff0clong\u7c7b\u578b\u7684\u6570\u5b57\u5360\u752864\u4e2a\u5b57\u8282\uff0c\u53ef\u8868\u793a\u7684\u6570\u5b57\u7684\u8303\u56f4\u5c31\u5f88\u5927\u4e86\uff0c\u81f3\u5c11\u76ee\u524d\u4eba\u7c7b\u80fd\u7528\u5230\u7684\u65f6\u95f4\u5e94\u8be5\u4e0d\u4f1a\u6ea2\u51fa\u4e86\u3002<\/p>\n<p>\u8fc7\u7a0b\u5c31\u8fd9\u6837\u3002\u518d\u5570\u55e6\u4e24\u53e5\uff0c\u5176\u5b9e\u5728\u5f00\u59cb\u6d4b\u8bd5\u524d\uff0c\u6211\u5df2\u7ecf\u628a\u5f00\u53d1\u5199\u7684\u4ee3\u7801\u901a\u8bfb\u4e86\u4e00\u904d\uff0c\u8fd9\u6837\u660e\u663e\u7684\u95ee\u9898\u5e94\u8be5\u5728\u4ee3\u7801review\u7684\u65f6\u5019\u5c31\u53d1\u73b0\u3002\u4e00\u4e2abug\u8d8a\u65e9\u53d1\u73b0\uff0c\u4fee\u590d\u5b83\u7684\u4ee3\u4ef7\u5c31\u8d8a\u5c0f\uff0c\u5411\u8fd9\u6837\u7684bug\u5982\u679c\u9057\u6f0f\u4e0a\u7ebf\u4e86\uff0c\u901a\u8fc7\u4e1a\u52a1\u573a\u666f\u6d4b\u8bd5\u4e00\u822c\u5f88\u96be\u53d1\u73b0\uff0c\u5373\u4f7f\u53d1\u73b0\u4e86\u67d0\u4e9b\u573a\u666f\u4e0b\u6301\u7eed\u65f6\u95f4\u6709\u95ee\u9898\uff0c\u7ebf\u4e0a\u7684\u4e1a\u52a1\u94fe\u8def\u90fd\u6bd4\u8f83\u957f\uff0c\u5b9a\u4f4d\u8d77\u6765\u4e5f\u6bd4\u8f83\u8d39\u52b2\uff0c\u6545review\u4ee3\u7801\u5f88\u91cd\u8981\u3001\u5355\u6d4b\u5f88\u91cd\u8981\u3002\u505a\u4e3a\u4e00\u4e2aQA\uff0c\u4fdd\u6301\u7834\u574f\u6027\u601d\u7ef4\u3001\u53d1\u6563\u6027\u601d\u7ef4\u5f88\u91cd\u8981\uff0c\u6d4b\u5f97\u9879\u76ee\u6bd4\u8f83\u591a\uff0c\u6709\u4e9b\u75b2\u61d2\u4e86\uff0c\u81ea\u7701\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u5728\u6d4b\u8bd5\u4ee3\u7801\u65f6\uff0c\u53d1\u73b0\u4e00\u4e2abug\uff0c\u5230\u6d4b\u8bd5\u7684\u6700\u540e\u9636\u6bb5\u624d\u53d1\u73b0\uff0c\u6bd4\u8f83\u5bb9\u6613\u5ffd\u7565\u3002\u8bb0\u5f55\u4e0b\u6765\uff0c\u4ee5\u81ea\u7701\u3002 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