{"id":299,"date":"2023-07-13T08:54:05","date_gmt":"2024-02-15T07:12:11","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/java-simpledateformat-java%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e3%80%82\/"},"modified":"2025-08-01T19:57:05","modified_gmt":"2025-08-01T11:57:05","slug":"java-simpledateformat-java%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-simpledateformat-java%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e3%80%82\/","title":{"rendered":"Java SimpleDateFormat \u6559\u7a0b\uff1a\u65e5\u671f\u683c\u5f0f\u5316\u4e0e\u89e3\u6790\u8be6\u89e3"},"content":{"rendered":"<h3>Java SimpleDateFormat \u548c DateFormat \u7c7b\u7b80\u4ecb\uff1a\u65e5\u671f\u683c\u5f0f\u5316\u4e0e\u672c\u5730\u5316<\/h3>\n<p>\u672c\u6587\u5c06\u4ecb\u7ecd Java \u4e2d\u7684 <code>SimpleDateFormat<\/code> \u548c <code>DateFormat<\/code> \u7c7b\uff0c\u5b83\u4eec\u4e3b\u8981\u7528\u4e8e\u65e5\u671f\u548c\u65f6\u95f4\u7684\u683c\u5f0f\u5316\u4e0e\u89e3\u6790\u3002\u8fd9\u4e24\u4e2a\u7c7b\u5728\u9700\u8981\u663e\u793a\u6216\u5904\u7406 Java \u65e5\u671f\u65f6\u95f4\u529f\u80fd\u65f6\u975e\u5e38\u6709\u7528\uff0c\u5b83\u4eec\u90fd\u4f4d\u4e8e <code>java.text<\/code> \u5305\u4e2d\u3002<\/p>\n<h2>Java \u65e5\u671f\u683c\u5f0f\u5316<\/h2>\n<ul class=\"post-ul\">\n<li><code>DateFormat<\/code> \u7c7b\u7528\u4e8e\u6839\u636e\u63d0\u4f9b\u7684\u7279\u5b9a\u533a\u57df\u8bbe\u7f6e\uff08Locale\uff09\u5c06\u65e5\u671f\u683c\u5f0f\u5316\u4e3a\u5b57\u7b26\u4e32\u3002<\/li>\n<li>\u533a\u57df\u8bbe\u7f6e\uff08Locale\uff09\u7528\u4e8e\u6307\u5b9a\u5730\u533a\u548c\u8bed\u8a00\uff0c\u4f7f\u4ee3\u7801\u66f4\u7b26\u5408\u7528\u6237\u672c\u5730\u4e60\u60ef\u3002<\/li>\n<li>\u4e16\u754c\u4e0a\u4e0d\u540c\u5730\u533a\u4e66\u5199\u65e5\u671f\u7684\u65b9\u5f0f\u5404\u4e0d\u76f8\u540c\u3002\u4f8b\u5982\uff0c2017\u5e7412\u670831\u65e5 \u5728\u5370\u5ea6\u53ef\u80fd\u5199\u6210 31-12-2017\uff0c\u4f46\u5728\u7f8e\u56fd\u5219\u5199\u6210 12-31-2017\u3002<\/li>\n<li><code>DateFormat<\/code> \u7c7b\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u5efa\u8bae\u4e3a\u6bcf\u4e2a\u7ebf\u7a0b\u521b\u5efa\u72ec\u7acb\u7684\u5b9e\u4f8b\u3002<\/li>\n<\/ul>\n<p>\u53ef\u4ee5\u4f7f\u7528 <code>DateFormat<\/code> \u7c7b\u7684 <code>getDateInstance()<\/code> \u548c <code>getTimeInstance()<\/code> \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a <code>DateFormat<\/code> \u5bf9\u8c61\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">Locale<\/span> loc <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"en\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"US\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">DateFormat<\/span> dateFormat <span class=\"token operator\">=<\/span> <mark><span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getDateInstance<\/span><span class=\"token punctuation\">(<\/span><\/mark><span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">DEFAULT<\/span><span class=\"token punctuation\">,<\/span> loc<mark><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\"><strong>\u6ce8\u610f\uff1a<\/strong>\u81ea Java 19 \u7248\u672c\u8d77\uff0c\u6784\u9020\u51fd\u6570 <code>Locale(String, String)<\/code> \u5df2\u88ab\u5f03\u7528\u3002<\/p>\n<p>\u63a8\u8350\u4f7f\u7528 <code>Locale.Builder<\/code> \u6784\u5efa <code>Locale<\/code> \u5bf9\u8c61\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">Locale<\/span> loc <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">.<\/span><span class=\"token class-name\">Builder<\/span><span class=\"token punctuation\">().<\/span><span class=\"token function\">setLanguage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"en\"<\/span><span class=\"token punctuation\">).<\/span><span class=\"token function\">setRegion<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"US\"<\/span><span class=\"token punctuation\">).<\/span><span class=\"token function\">build<\/span><span class=\"token punctuation\">();<\/span><\/code><\/pre>\n<p><code>DateFormat<\/code> \u7684 <code>getDateInstance<\/code> \u65b9\u6cd5\u9700\u8981\u4e24\u4e2a\u8f93\u5165\u53c2\u6570\uff1a\u7b2c\u4e00\u4e2a\u53c2\u6570\u6307\u5b9a\u8981\u4f7f\u7528\u7684\u65e5\u671f\u683c\u5f0f\u6837\u5f0f\uff08\u5982 <code>DateFormat.DEFAULT<\/code>\uff09\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u533a\u57df\u8bbe\u7f6e\uff08Locale\uff09\u3002<\/p>\n<\/div>\n<h3>\u4f7f\u7528 <code>format()<\/code> \u65b9\u6cd5\u8fdb\u884c\u65e5\u671f\u683c\u5f0f\u5316<\/h3>\n<p><code>DateFormat<\/code> \u7c7b\u6709\u4e00\u4e2a <code>format()<\/code> \u65b9\u6cd5\uff0c\u8d1f\u8d23\u5c06 <code>Date<\/code> \u5bf9\u8c61\u683c\u5f0f\u5316\u4e3a\u5b57\u7b26\u4e32\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">Locale<\/span> locale <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"fr\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"FR\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">DateFormat<\/span> dateFormat <span class=\"token operator\">=<\/span> <span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getDateInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">DEFAULT<\/span><span class=\"token punctuation\">,<\/span> locale<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">String<\/span> date <span class=\"token operator\">=<\/span> dateFormat<span class=\"token punctuation\">.<\/span><mark><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><\/mark><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><mark><span class=\"token punctuation\">)<\/span><\/mark><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5c06\u4ee5\u6cd5\u8bed\uff08<code>fr<\/code>\uff09\u548c\u6cd5\u56fd\uff08<code>FR<\/code>\uff09\u5730\u533a\u7684\u683c\u5f0f\u663e\u793a\u5f53\u524d\u65e5\u671f\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa\u793a\u4f8b<\/div>\n<pre class=\"post-pre\"><code>3 janv. 2018<\/code><\/pre>\n<h3>\u4f7f\u7528 <code>getTimeInstance()<\/code> \u65b9\u6cd5<\/h3>\n<p>\u8fd9\u662f\u6587\u7ae0\u300aJava SimpleDateFormat &#8211; Java\u65e5\u671f\u683c\u5f0f\u300b\u7684\u7b2c2\u90e8\u5206\uff08\u51715\u90e8\u5206\uff09\u3002<\/p>\n<p>\u4e3a\u4e86\u521b\u5efa\u4e00\u4e2a<code>DateFormat<\/code>\u5b9e\u4f8b\uff0c\u6211\u4eec\u4f7f\u7528<code>getDateInstance()<\/code>\u65b9\u6cd5\u3002<\/p>\n<p>\u4e3a\u4e86\u6267\u884c\u65f6\u95f4\u683c\u5f0f\u5316\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u65f6\u95f4\u5b9e\u4f8b\u3002\u6211\u4eec\u5c06\u4f7f\u7528<code>getTimeInstance()<\/code>\u65b9\u6cd5\u6765\u83b7\u53d6\u65f6\u95f4\u5b9e\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">Locale<\/span> locale <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"fr\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"FR\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">DateFormat<\/span> dateFormat <span class=\"token operator\">=<\/span> <span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getTimeInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DateFormat<\/span><span class=\"token punctuation\">.<\/span><span class=\"token constant\">DEFAULT<\/span><span class=\"token punctuation\">,<\/span> locale<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">String<\/span> date <span class=\"token operator\">=<\/span> dateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5c06\u4ee5\u6cd5\u8bed\uff08fr\uff09\u548c\u6cd5\u56fd\uff08FR\uff09\u5730\u533a\u7684\u683c\u5f0f\u5316\u65f6\u95f4\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code>11:03:01<\/code><\/pre>\n<\/div>\n<h2>Java SimpleDateFormat: Java\u7684\u65e5\u671f\u683c\u5f0f\u5316\u7c7b<\/h2>\n<p><code>SimpleDateFormat<\/code>\u4e0e<code>DateFormat<\/code>\u7c7b\u4f3c\u3002\u5b83\u4eec\u4e4b\u95f4\u552f\u4e00\u7684\u4e3b\u8981\u533a\u522b\u662f<code>SimpleDateFormat<\/code>\u53ef\u4ee5\u901a\u8fc7\u672c\u5730\u5316\u652f\u6301\u7528\u4e8e\u683c\u5f0f\u5316\uff08\u5c06\u65e5\u671f\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff09\u548c\u89e3\u6790\uff08\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u65e5\u671f\uff09\uff0c\u800c<code>DateFormat<\/code>\u6ca1\u6709\u672c\u5730\u5316\u652f\u6301\u3002<code>DateFormat<\/code>\u662f\u4e00\u4e2a\u62bd\u8c61\u7c7b\uff0c\u63d0\u4f9b\u4e86\u65e5\u671f\u683c\u5f0f\u5316\u548c\u89e3\u6790\u7684\u57fa\u672c\u652f\u6301\u3002<code>SimpleDateFormat<\/code>\u662f\u6269\u5c55\u4e86<code>DateFormat<\/code>\u7c7b\u7684\u5177\u4f53\u7c7b\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>SimpleDateFormat<\/code>\u6784\u9020\u51fd\u6570\u6765\u521b\u5efa<code>SimpleDateFormat<\/code>\u5b9e\u4f8b\u3002\u6784\u9020\u51fd\u6570\u662f\u4e00\u4e2a\u5e26\u53c2\u6570\u7684\u6784\u9020\u51fd\u6570\uff0c\u5e76\u4e14\u9700\u8981\u4e00\u4e2a<code>String<\/code>\u6a21\u5f0f\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"MM-dd-yyyy\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u5b57\u7b26\u4e32\u6a21\u5f0f\u662f\u7528\u4e8e\u683c\u5f0f\u5316\u65e5\u671f\u7684\u6a21\u5f0f\uff0c\u8f93\u51fa\u5c06\u6309\u7167\u201cMM-dd-yyyy\u201d\u683c\u5f0f\u751f\u6210\u3002<\/p>\n<h3>\u6a21\u5f0f<\/h3>\n<p>\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u5e94\u8be5\u7528\u4e8e\u683c\u5f0f\u5316\u6a21\u5f0f\u7684\u6a21\u5f0f\u8bed\u6cd5\u3002<\/p>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>\u6a21\u5f0f\u5b57\u6bcd<\/th>\n<th>\u65e5\u671f\u6216\u65f6\u95f4\u7ec4\u4ef6<\/th>\n<th>\u793a\u4f8b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>G<\/td>\n<td>\u7eaa\u5143\u6807\u8bb0<\/td>\n<td>AD<\/td>\n<\/tr>\n<tr>\n<td>y<\/td>\n<td>\u5e74\u4efd<\/td>\n<td>2018 (yyyy), 18 (yy)<\/td>\n<\/tr>\n<tr>\n<td>M<\/td>\n<td>\u5e74\u4efd\u4e2d\u7684\u6708\u4efd<\/td>\n<td>July (MMMM), Jul (MMM), 07 (MM)<\/td>\n<\/tr>\n<tr>\n<td>w<\/td>\n<td>\u5e74\u4efd\u4e2d\u7684\u5468\u6570<\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td>W<\/td>\n<td>\u6708\u4efd\u4e2d\u7684\u5468\u6570<\/td>\n<td>3<\/td>\n<\/tr>\n<tr>\n<td>D<\/td>\n<td>\u5e74\u4efd\u4e2d\u7684\u5929\u6570<\/td>\n<td>266<\/td>\n<\/tr>\n<tr>\n<td>d<\/td>\n<td>\u6708\u4efd\u4e2d\u7684\u5929\u6570<\/td>\n<td>09 (dd), 9(d)<\/td>\n<\/tr>\n<tr>\n<td>F<\/td>\n<td>\u6708\u4efd\u4e2d\u7684\u661f\u671f\u51e0<\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td>E<\/td>\n<td>\u661f\u671f\u540d\u79f0<\/td>\n<td>Tuesday, Tue<\/td>\n<\/tr>\n<tr>\n<td>u<\/td>\n<td>\u661f\u671f\u51e0\u7684\u6570\u5b57\u8868\u793a\uff0c1\u4ee3\u8868\u661f\u671f\u4e00\uff0c2\u4ee3\u8868\u661f\u671f\u4e8c\uff0c\u4ee5\u6b64\u7c7b\u63a8<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>a<\/td>\n<td>\u4e0a\u5348\u6216\u4e0b\u5348\u6807\u8bb0<\/td>\n<td>AM<\/td>\n<\/tr>\n<tr>\n<td>H<\/td>\n<td>\u4e00\u5929\u4e2d\u7684\u5c0f\u65f6 (0-23)<\/td>\n<td>12<\/td>\n<\/tr>\n<tr>\n<td>k<\/td>\n<td>\u4e00\u5929\u4e2d\u7684\u5c0f\u65f6 (1-24)<\/td>\n<td>23<\/td>\n<\/tr>\n<tr>\n<td>K<\/td>\n<td>12\u5c0f\u65f6\u5236\u4e0a\u5348\/\u4e0b\u5348\u7684\u5c0f\u65f6 (0-11)<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>h<\/td>\n<td>12\u5c0f\u65f6\u5236\u4e0a\u5348\/\u4e0b\u5348\u7684\u5c0f\u65f6 (1-12)<\/td>\n<td>12<\/td>\n<\/tr>\n<tr>\n<td>m<\/td>\n<td>\u5206\u949f<\/td>\n<td>59<\/td>\n<\/tr>\n<tr>\n<td>s<\/td>\n<td>\u79d2\u949f<\/td>\n<td>35<\/td>\n<\/tr>\n<tr>\n<td>S<\/td>\n<td>\u6beb\u79d2<\/td>\n<td>978<\/td>\n<\/tr>\n<tr>\n<td>z<\/td>\n<td>\u65f6\u533a<\/td>\n<td>Pacific Standard Time; PST; GMT-08:00<\/td>\n<\/tr>\n<tr>\n<td>Z<\/td>\n<td>\u65f6\u533a\u504f\u79fb\u91cf\uff08\u5c0f\u65f6\uff0cRFC\u6a21\u5f0f\uff09<\/td>\n<td>-0800<\/td>\n<\/tr>\n<tr>\n<td>X<\/td>\n<td>ISO\u683c\u5f0f\u7684\u65f6\u533a\u504f\u79fb\u91cf<\/td>\n<td>-08; -0800; -08:00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u8fd9\u662f\u6587\u7ae0\u300aJava SimpleDateFormat &#8211; Java\u65e5\u671f\u683c\u5f0f\u300b\u7684\u7b2c3\u90e8\u5206\uff08\u51715\u90e8\u5206\uff09\u3002<\/p>\n<p>\u5bf9\u4e8e\u6708\u4efd\uff0c\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u9700\u6c42\u4f7f\u7528\u4e0d\u540c\u6570\u91cf\u7684\u5b57\u6bcd\u6765\u8fbe\u5230\u4e0d\u540c\u7684\u6548\u679c\u3002<\/p>\n<div>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>\u7c7b\u578b<\/th>\n<th>\u6a21\u5f0f<\/th>\n<th>\u793a\u4f8b\u8f93\u51fa<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5b8c\u6574\u6708\u4efd<\/td>\n<td><code>MMMM<\/code><\/td>\n<td>July<\/td>\n<\/tr>\n<tr>\n<td>\u7f29\u5199\u6708\u4efd<\/td>\n<td><code>MMM<\/code><\/td>\n<td>Jul<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u5b57\u6708\u4efd<\/td>\n<td><code>MM<\/code><\/td>\n<td>07<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f8b\u5b50\uff1a\u73b0\u5728\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e9b\u5173\u4e8e\u65e5\u671f\u548c\u65f6\u95f4\u4e0d\u540c\u683c\u5f0f\u7684\u4f8b\u5b50\u3002<\/h4>\n<div>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>\u6a21\u5f0f<\/th>\n<th>\u7ed3\u679c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code>MM\/dd\/yyyy<\/code><\/td>\n<td>01\/02\/2018<\/td>\n<\/tr>\n<tr>\n<td><code>dd-M-yyyy hh:mm:ss<\/code><\/td>\n<td>02-1-2018 06:07:59<\/td>\n<\/tr>\n<tr>\n<td><code>dd MMMM yyyy<\/code><\/td>\n<td>02 January 2018<\/td>\n<\/tr>\n<tr>\n<td><code>dd MMMM yyyy zzzz<\/code><\/td>\n<td>02 January 2018 India Standard Time<\/td>\n<\/tr>\n<tr>\n<td><code>E, dd MMM yyyy HH:mm:ss z<\/code><\/td>\n<td>Tue, 02 Jan 2018 18:07:59 IST<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u4f7f\u7528 SimpleDateFormat() \u8fdb\u884c\u683c\u5f0f\u5316<\/h3>\n<p>\u4e3a\u4e86\u683c\u5f0f\u5316\u65e5\u671f\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u6784\u9020\u51fd\u6570\u521b\u5efa <code>SimpleDateFormat<\/code> \u7684\u5b9e\u4f8b\uff0c\u7136\u540e\u4f7f\u7528 <code>format()<\/code> \u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"MM-dd-yyyy\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">String<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5c06\u8f93\u51fa\u201cMM-dd-yyyy\u201d\u683c\u5f0f\u7684\u65e5\u671f\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code>01-02-2018\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u6a21\u5f0f\u751f\u6210\u201c\u5e74\u5185\u7684\u6708\u4efd\u201d\u3001\u201c\u6708\u5185\u7684\u65e5\u671f\u201d\u548c\u201c\u5e74\u4efd\u201d\u3002\u5b57\u7b26\u7684\u7c7b\u578b\uff08\u548c\u5927\u5c0f\u5199\uff09\u4ee5\u53ca\u5b57\u7b26\u7684\u6570\u91cf\u90fd\u5bf9\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u8d77\u5230\u4f5c\u7528\u3002\u6708\u4efd\u7528\u4e24\u4f4d\u6570\u5b57\u8868\u793a\uff0c\u65e5\u671f\u7528\u4e24\u4f4d\u6570\u5b57\u8868\u793a\uff0c\u800c\u5e74\u4efd\u7528\u56db\u4f4d\u6570\u5b57\u8868\u793a\u3002<\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5c06\u65e5\u671f\u201c2018\u5e741\u67082\u65e5\u201d\u663e\u793a\u4e3a\u201c01-02-2018\u201d\u3002<\/p>\n<p>\u4e3a\u4e86\u683c\u5f0f\u5316\u65f6\u95f4\uff0c\u6211\u4eec\u5728\u521b\u5efa <code>SimpleDateFormat<\/code> \u5b9e\u4f8b\u65f6\u5fc5\u987b\u66f4\u6539\u6a21\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"HH:mm:ss.SSSZ\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">String<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u4f1a\u8f93\u51fa\u201cHH:mm:ss.SSSZ\u201d\u683c\u5f0f\u7684\u65f6\u95f4\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code>13:03:15.454+0530\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u6a21\u5f0f\u4ea7\u751f\u4e86\u201c\u5c0f\u65f6\u201d\u3001\u201c\u5206\u949f\u201d\u3001\u201c\u79d2\u949f\u201d\u3001\u201c\u6beb\u79d2\u201d\u4ee5\u53ca\u201c\u65f6\u533a\u504f\u79fb\uff08\u6309\u7167RFC\u6a21\u5f0f\uff09\u201d\u3002<\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5c06\u65f6\u95f4\u663e\u793a\u4e3a\u201c13:03:15.454+0530\u201d\u3002<\/p>\n<h3>\u4f7f\u7528 parse() \u51fd\u6570<\/h3>\n<p>\u8fd9\u662f\u6587\u7ae0\u300aJava SimpleDateFormat &#8211; Java\u65e5\u671f\u683c\u5f0f\u300b\u7684\u7b2c4\u90e8\u5206\uff08\u51715\u90e8\u5206\uff09\u3002<\/p>\n<h2>Java SimpleDateFormat\uff1a\u5b57\u7b26\u4e32\u89e3\u6790\u4e3a\u65e5\u671f\uff08Parse\uff09<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a<code>java.util.Date<\/code>\u5b9e\u4f8b\u7684\u8fc7\u7a0b\u79f0\u4e3a\u201c\u89e3\u6790\u201d\uff08Parse\uff09\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>SimpleDateFormat<\/code>\u7c7b\u7684<code>parse()<\/code>\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u3002\u8981\u5c06\u5b57\u7b26\u4e32\u6210\u529f\u89e3\u6790\u4e3a\u65e5\u671f\u5bf9\u8c61\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a<code>SimpleDateFormat<\/code>\u5b9e\u4f8b\uff0c\u5e76\u5728\u5176\u6784\u9020\u51fd\u6570\u4e2d\u4f20\u5165\u4e00\u4e2a\u7b26\u5408\u5b57\u7b26\u4e32\u683c\u5f0f\u7684\u6a21\u5f0f\u3002<\/p>\n<h3>\u89e3\u6790\u65e5\u671f\u5b57\u7b26\u4e32\u793a\u4f8b<\/h3>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"MM-dd-yyyy\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">Date<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">parse<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"12-01-2018\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u5c06\u8f93\u51fa\u4e00\u4e2a\u65e5\u671f\uff082018\u5e7412\u67081\u65e5\uff09\uff0c\u4f46\u6ca1\u6709\u6307\u5b9a\u65f6\u95f4\u90e8\u5206\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa\u7ed3\u679c<\/div>\n<pre class=\"post-pre\"><code>Sat Dec 01 00:00:00 IST 2018<\/code><\/pre>\n<h3>\u89e3\u6790\u65f6\u95f4\u5b57\u7b26\u4e32\u793a\u4f8b<\/h3>\n<p>\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u4f7f\u7528<code>SimpleDateFormat<\/code>\u89e3\u6790\u65f6\u95f4\u5b57\u7b26\u4e32\u7684\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"HH:mm:ss\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">Date<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">parse<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"22:00:03\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5c06\u8f93\u51fa\u4e00\u4e2a\u53ea\u5305\u542b\u65f6\u95f4\uff0822:00:03\uff09\u7684\u65e5\u671f\u5bf9\u8c61\uff0c\u4f46\u6ca1\u6709\u6307\u5b9a\u65e5\u671f\u90e8\u5206\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa\u7ed3\u679c<\/div>\n<pre class=\"post-pre\"><code>Thu Jan 01 22:00:03 IST 1970<\/code><\/pre>\n<p>\u7531\u4e8e\u6211\u4eec\u6ca1\u6709\u5728\u6a21\u5f0f\u4e2d\u6307\u5b9a\u65e5\u671f\u4fe1\u606f\uff0c\u7a0b\u5e8f\u4f1a\u5c06\u65f6\u95f4\u89c6\u4e3a\u201c\u7eaa\u5143\u65f6\u95f4\u201d\uff08\u5373\uff0c\u4ece1970\u5e741\u67081\u65e5\u5f00\u59cb\u8ba1\u7b97\uff09\u3002<\/p>\n<h3>\u4f7f\u7528Locale\u8fdb\u884c\u65e5\u671f\u683c\u5f0f\u5316<\/h3>\n<p>\u5728\u4e4b\u524d\u7684\u65e5\u671f\u683c\u5f0f\u5316\u90e8\u5206\uff0c\u6211\u4eec\u5df2\u7ecf\u63a2\u8ba8\u4e86\u5982\u4f55\u4f7f\u7528<code>Locale<\/code>\uff08\u5730\u533a\u8bbe\u7f6e\uff09\u6765\u5f71\u54cd\u65e5\u671f\u548c\u65f6\u95f4\u7684\u663e\u793a\u683c\u5f0f\u3002<code>Locale<\/code>\u662f\u57fa\u4e8e\u7279\u5b9a\u5730\u533a\u6216\u8bed\u8a00\u73af\u5883\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token class-name\">String<\/span> pattern <span class=\"token operator\">=<\/span> <span class=\"token string\">\"EEEEE MMMMM yyyy HH:mm:ss.SSSZ\"<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">SimpleDateFormat<\/span> simpleDateFormat <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SimpleDateFormat<\/span><span class=\"token punctuation\">(<\/span>pattern<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Locale<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"fr\"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">\"FR\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">Date<\/span> date <span class=\"token operator\">=<\/span> simpleDateFormat<span class=\"token punctuation\">.<\/span><span class=\"token function\">format<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>date<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5c06\u4ee5\u6cd5\u8bed\uff08<code>fr<\/code>\uff09\u548c\u6cd5\u56fd\uff08<code>FR<\/code>\uff09\u5730\u533a\u7684\u683c\u5f0f\u663e\u793a\u5f53\u524d\u7684\u65e5\u671f\u548c\u65f6\u95f4\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa\u7ed3\u679c<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>2018\u5e741\u67082\u65e5 14:51:02.354+0530<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6839\u636e\u63d0\u4f9b\u7684\u533a\u57df\u8bbe\u7f6e\uff0c\u6cd5\u8bed\u4e2d\u7684\u65e5\u671f\u548c\u6708\u4efd\u547d\u540d\u65b9\u5f0f\u5982\u4e0b\uff1amardi\u662f\u201c\u661f\u671f\u4e8c\u201d\uff0cjanvier\u662f\u201c\u4e00\u6708\u201d\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u4f60\u5b66\u4e60\u4e86\u5173\u4e8eJava\u7684SimpleDateFormat\u548cDateFormat\u7684\u77e5\u8bc6\u3002<\/p>\n<h3>\u53c2\u8003\u8d44\u6599:<\/h3>\n<ul class=\"post-ul\">\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/text\/SimpleDateFormat.html\" target=\"_blank\" rel=\"noopener\">SimpleDateFormat API \u6587\u6863<\/a><\/li>\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/text\/DateFormat.html\" target=\"_blank\" rel=\"noopener\">DateFormat API \u6587\u6863<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Java SimpleDateFormat \u548c DateFormat \u7c7b\u7b80\u4ecb\uff1a\u65e5\u671f\u683c\u5f0f\u5316\u4e0e\u672c\u5730\u5316 \u672c\u6587\u5c06\u4ecb\u7ecd  [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[189,977,1053,979,1054],"class_list":{"0":"post-299","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-java","9":"tag-simpledateformat","10":"tag-979","11":"tag-1054"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java SimpleDateFormat \u6559\u7a0b\uff1a\u65e5\u671f\u683c\u5f0f\u5316\u4e0e\u89e3\u6790\u8be6\u89e3 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u6df1\u5165\u5b66\u4e60Java 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