{"id":948,"date":"2018-09-17T18:43:54","date_gmt":"2018-09-17T09:43:54","guid":{"rendered":"https:\/\/chat-messenger.com\/?p=948"},"modified":"2019-07-01T00:27:48","modified_gmt":"2019-06-30T15:27:48","slug":"%e6%97%a5%e6%9c%9f%e5%b7%ae%e5%bc%82","status":"publish","type":"post","link":"https:\/\/chat-messenger.com\/zh\/blog\/java\/date-difference","title":{"rendered":"Java\uff1a\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5dee\u503c"},"content":{"rendered":"<h2 class=\"common_title\"><a name=\"0\">Java\uff1a\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5dee\u503c<\/a><\/h2>\n<p>\n\u5728Java\u4e2d\uff0c\u4e24\u4e2a<strong>\u65e5\u671f\u5dee<\/strong>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u67e5\u627e\u7b54\u6848\u7684\u793a\u4f8b\u7a0b\u5e8f\u3002<br \/>\n\u8be5\u793a\u4f8b\u7a0b\u5e8f\u53ef\u4ee5\u5904\u7406\u88ab\u6bd4\u8f83\u7684\u65e5\u671f\u4e3a\u5b57\u7b26\u4e32\u683c\u5f0f\uff08yyyy\/MM\/dd\uff09\u4ee5\u53ca java.util.Date \u683c\u5f0f\u7684\u60c5\u51b5\u3002\n<\/p>\n<p><strong>\u65e5\u671f\u5dee<\/strong>\u8ba1\u7b97\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u9996\u5148\uff0c\u6211\u4eec\u5c06\u8fd9\u4e24\u4e2a\u65e5\u671f\u8f6c\u6362\u4e3a\u957f\u6574\u578b\u503c\u3002<br \/>\n    *\u6b64\u957f\u6574\u578b\u503c\u8868\u793a\u81ea 1970 \u5e74 1 \u6708 1 \u65e5 00:00:00 GMT \u4ee5\u6765\u7ecf\u8fc7\u7684\u6beb\u79d2\u6570\u3002<\/li>\n<li>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u6765\u627e\u51fa\u5dee\u5f02\u3002<\/li>\n<li>\u60a8\u53ef\u4ee5\u901a\u8fc7\u5c06\u4e0a\u8ff0\u8ba1\u7b97\u7ed3\u679c\u9664\u4ee5\u4e00\u5929\u4e2d\u7684\u5c0f\u65f6\u6570\u6765\u627e\u51fa\u65e5\u671f\u4e4b\u95f4\u7684\u5dee\u503c\u3002<br \/>\n    *1 \u5929\uff0824 \u5c0f\u65f6\uff09\u7b49\u4e8e 86,400,000 \u6beb\u79d2\u3002<\/li>\n<\/ol>\n<h2 class=\"common_title\"><a name=\"1\">\u6837\u672c\u6765\u6e90<\/a><\/h2>\n<p><textarea readonly=\"readonly\" style=\"font-size: 13px;height: 600px;\" class=\"src\" onclick=\"this.focus();this.select()\">\/**<br \/>\n * 2\u3064\u306e\u65e5\u4ed8\u306e\u5dee\u3092\u6c42\u3081\u307e\u3059\u3002<br \/>\n * \u65e5\u4ed8\u6587\u5b57\u5217 strDate1 &#8211; strDate2 \u304c\u4f55\u65e5\u304b\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n *<br \/>\n * @param strDate1    \u65e5\u4ed8\u6587\u5b57\u5217 yyyy\/MM\/dd<br \/>\n * @param strDate2    \u65e5\u4ed8\u6587\u5b57\u5217 yyyy\/MM\/dd<br \/>\n * @return    2\u3064\u306e\u65e5\u4ed8\u306e\u5dee<br \/>\n * @throws ParseException \u65e5\u4ed8\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u4e0d\u6b63\u306a\u5834\u5408<br \/>\n *\/<br \/>\npublic static int differenceDays(String strDate1,String strDate2)<br \/>\n    throws ParseException {<br \/>\n    Date date1 = DateFormat.getDateInstance().parse(strDate1);<br \/>\n    Date date2 = DateFormat.getDateInstance().parse(strDate2);<br \/>\n    return differenceDays(date1,date2);<br \/>\n}<br \/>\n\/**<br \/>\n * 2\u3064\u306e\u65e5\u4ed8\u306e\u5dee\u3092\u6c42\u3081\u307e\u3059\u3002<br \/>\n * java.util.Date \u578b\u306e\u65e5\u4ed8 date1 &#8211; date2 \u304c\u4f55\u65e5\u304b\u3092\u8fd4\u3057\u307e\u3059\u3002<br \/>\n *<br \/>\n * \u8a08\u7b97\u65b9\u6cd5\u306f\u4ee5\u4e0b\u3068\u306a\u308a\u307e\u3059\u3002<br \/>\n * 1.\u6700\u521d\u306b2\u3064\u306e\u65e5\u4ed8\u3092 long \u5024\u306b\u5909\u63db\u3057\u307e\u3059\u3002<br \/>\n * \u3000\u203b\u3053\u306e long \u5024\u306f 1970 \u5e74 1 \u6708 1 \u65e5 00:00:00 GMT \u304b\u3089\u306e<br \/>\n * \u3000\u7d4c\u904e\u30df\u30ea\u79d2\u6570\u3068\u306a\u308a\u307e\u3059\u3002<br \/>\n * 2.\u6b21\u306b\u305d\u306e\u5dee\u3092\u6c42\u3081\u307e\u3059\u3002<br \/>\n * 3.\u4e0a\u8a18\u306e\u8a08\u7b97\u3067\u51fa\u305f\u6570\u91cf\u3092 1 \u65e5\u306e\u6642\u9593\u3067\u5272\u308b\u3053\u3068\u3067<br \/>\n * \u3000\u65e5\u4ed8\u306e\u5dee\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n * \u3000\u203b1 \u65e5 ( 24 \u6642\u9593) \u306f\u300186,400,000 \u30df\u30ea\u79d2\u3067\u3059\u3002<br \/>\n *<br \/>\n * @param date1    \u65e5\u4ed8 java.util.Date<br \/>\n * @param date2    \u65e5\u4ed8 java.util.Date<br \/>\n * @return    2\u3064\u306e\u65e5\u4ed8\u306e\u5dee<br \/>\n *\/<br \/>\npublic static int differenceDays(Date date1,Date date2) {<br \/>\n    long datetime1 = date1.getTime();<br \/>\n    long datetime2 = date2.getTime();<br \/>\n    long one_date_time = 1000 * 60 * 60 * 24;<br \/>\n    long diffDays = (datetime1 &#8211; datetime2) \/ one_date_time;<br \/>\n    return (int)diffDays;<br \/>\n}<br \/>\n<\/textarea><\/p>\n<p><script type=\"text\/javascript\" src=\"https:\/\/chat-messenger.com\/js\/common.js?dd12sssas2223\" charset=\"UTF-8\"><\/script><br \/>\n<script type=\"text\/javascript\"> writePR(); <\/script><\/p>\n<h2 class=\"common_title\"><a name=\"2\">\u6267\u884c<\/a><\/h2>\n<p>\u25c6\u793a\u4f8b<\/p>\n<pre class=\"sample_src\">public static void main(String[] args) { int ret = differenceDays(&quot;2008\/6\/2&quot;,&quot;2008\/6\/1&quot;); System.out.println(&quot;\u7ed3\u679c 1 = &quot;+ret&quot;); ret = differenceDays(&quot;2008\/6\/1&quot;,&quot;2008\/6\/3&quot;); System.out.println(&quot;\u7ed3\u679c 2 = &quot;+ret&quot;); \/\/ \u4e94\u6708\u6709 31 \u5929 ret = differenceDays(&quot;2008\/6\/1&quot;,&quot;2008\/5\/1&quot;); System.out.println(&quot;\u7ed3\u679c 3 = &quot;+ret&quot;); \/\/ \u516d\u6708\u6709 30 \u5929 ret = differenceDays(&quot;2008\/7\/1&quot;,&quot;2008\/6\/1&quot;); System.out.println(&quot;\u7ed3\u679c 4 = &quot;+ret&quot;); \/\/ 2008 \u5e74\u662f\u95f0\u5e74\uff0c\u6240\u4ee5\u4e8c\u6708\u7684\u6700\u540e\u4e00\u5929\u662f 29 \u53f7 ret = differenceDays(&quot;2008\/3\/1&quot;,&quot;2008\/2\/28&quot;); System.out.println(&quot;\u7ed3\u679c 5 = &quot;+ret); }\r\n<\/pre>\n<p>\u25c6\u6267\u884c\u7ed3\u679c<\/p>\n<pre class=\"console\">\u7ed3\u679c 1 = 1 \u7ed3\u679c 2 = -2 \u7ed3\u679c 3 = 31 \u7ed3\u679c 4 = 30 \u7ed3\u679c 5 = 2\r\n<\/pre>\n<p>\n\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5dee\u503c\u76f8\u5bf9\u5bb9\u6613\uff0c\u4f46\u8ba1\u7b97\u6708\u4efd\u4e4b\u95f4\u7684\u5dee\u503c\u5219\u7a0d\u5fae\u590d\u6742\u4e00\u4e9b\u3002\u8bf7\u53c2\u8003\u4ee5\u4e0b\u5185\u5bb9\u3002<br \/>\n\u300c<a href=\"https:\/\/chat-messenger.com\/zh\/%e5%8d%9a%e5%ae%a2\/java\/%e5%b7%ae%e6%9c%88\/\" title=\"Java\uff1a\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u6708\u4efd\u6570\u7684\u5dee\u503c\u3002\">Java\uff1a\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u6708\u4efd\u6570\u7684\u5dee\u503c\u3002<\/a>\u300d<\/p>\n<p>\u6b64\u793a\u4f8b\u7a0b\u5e8f\u9002\u7528\u4e8e Chat&amp;Messenger\u3002<a href=\"\/zh\/%e6%89%8b%e5%86%8c\/%e6%97%a5%e7%a8%8b%e5%ae%89%e6%8e%92\/%e8%a1%8c%e4%ba%8b%e5%8e%86\/\" title=\"\u65e5\u5386\u548c\u65e5\u7a0b\u7ba1\u7406\u529f\u80fd\">\u65e5\u5386\u548c\u65e5\u7a0b\u7ba1\u7406\u529f\u80fd<\/a>\u6211\u786e\u5b9e\u5728[\u8fd9\u4e2a\u8bed\u5883\u4e2d]\u4f7f\u7528\u5b83\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>Java 2\u3064\u306e\u65e5\u4ed8\u306e\u5dee\u3092\u6c42\u3081\u308b Java \u3067\u30012 \u3064\u306e\u65e5\u4ed8\u306e\u5dee\u3092\u6c42\u3081\u308b\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002 \u30b5\u30f3 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[19],"tags":[],"class_list":["post-948","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/posts\/948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/comments?post=948"}],"version-history":[{"count":8,"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/posts\/948\/revisions"}],"predecessor-version":[{"id":3655,"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/posts\/948\/revisions\/3655"}],"wp:attachment":[{"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/media?parent=948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/categories?post=948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chat-messenger.com\/zh\/wp-json\/wp\/v2\/tags?post=948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}