{"id":924,"date":"2018-09-17T18:27:12","date_gmt":"2018-09-17T09:27:12","guid":{"rendered":"https:\/\/chat-messenger.com\/?p=924"},"modified":"2018-12-23T02:00:53","modified_gmt":"2018-12-22T17:00:53","slug":"%e6%96%87%e4%bb%b6%e5%8f%96%e5%be%97%e5%89%8d%e7%b6%b4","status":"publish","type":"post","link":"https:\/\/chat-messenger.com\/zh_tw\/blog\/java\/file-getpreffix","title":{"rendered":"\u5f9e Java \u6a94\u6848\u540d\u7a31\u4e2d\u79fb\u9664\u6a94\u6848\u526f\u6a94\u540d\u3002"},"content":{"rendered":"<h2 class=\"common_title\"><a name=\"0\">\u5f9e Java \u6a94\u6848\u540d\u7a31\u4e2d\u79fb\u9664\u6a94\u6848\u526f\u6a94\u540d\u3002<\/a><\/h2>\n<p>\n\u5728 Java \u4e2d<strong>\u6a94\u6848\u540d\u7a31<\/strong>\u5f9e<strong>\u6a94\u6848\u526f\u6a94\u540d<\/strong>\u9019\u662f\u4e00\u500b\u7bc4\u4f8b\u539f\u59cb\u7a0b\u5f0f\u78bc\uff0c\u50b3\u56de\u7684\u540d\u7a31\u5df2\u79fb\u9664\u591a\u9918\u90e8\u5206\u3002\n<\/p>\n<h2 class=\"common_title\"><a name=\"1\">\u7bc4\u4f8b\u7a0b\u5f0f<\/a><\/h2>\n<pre class=\"sample_src\">\/**\r\n * \u30d5\u30a1\u30a4\u30eb\u540d\u304b\u3089\u62e1\u5f35\u5b50\u3092\u53d6\u308a\u9664\u3044\u305f\u540d\u524d\u3092\u8fd4\u3057\u307e\u3059\u3002\r\n * @param fileName \u30d5\u30a1\u30a4\u30eb\u540d\r\n * @return \u30d5\u30a1\u30a4\u30eb\u540d\r\n *\/\r\npublic static String getPreffix(String fileName) {\r\n    if (fileName == null)\r\n        return null;\r\n    int point = fileName.lastIndexOf(\".\");\r\n    if (point != -1) {\r\n        return fileName.substring(0, point);\r\n    } \r\n    return fileName;\r\n}\r\n<\/pre>\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\">\u57f7\u884c\u7d50\u679c<\/a><\/h2>\n<p>\u25c6\u7bc4\u4f8b<\/p>\n<pre class=\"sample_src\">\/** * \u57f7\u884c\u7bc4\u4f8b * @param args *\/ public static void main(String[] args) { String ret1 = getPreffix(&quot;test.html&quot;); System.out.println(ret1); String ret2 = getPreffix(&quot;C:\\\\test.htmlln(ret1); String ret2 = getPreffix(&quot;C:\\\\test.html&quot;);\r\n<\/pre>\n<p>\u25c6\u8f38\u51fa\u7d50\u679c<\/p>\n<pre class=\"console\">\u6e2c\u8a66 C:\\test\r\n<\/pre>","protected":false},"excerpt":{"rendered":"<p>Java \u30d5\u30a1\u30a4\u30eb\u540d\u304b\u3089\u62e1\u5f35\u5b50\u3092\u53d6\u308a\u9664\u304f Java\u3067\u30d5\u30a1\u30a4\u30eb\u540d\u304b\u3089\u62e1\u5f35\u5b50\u3092\u53d6\u308a\u9664\u3044\u305f\u540d\u524d\u3092\u8fd4\u3059\u30b5\u30f3\u30d7\u30eb\u30bd\u30fc\u30b9\u3067 [&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-924","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/posts\/924","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/comments?post=924"}],"version-history":[{"count":4,"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/posts\/924\/revisions"}],"predecessor-version":[{"id":1891,"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/posts\/924\/revisions\/1891"}],"wp:attachment":[{"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/media?parent=924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/categories?post=924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chat-messenger.com\/zh_tw\/wp-json\/wp\/v2\/tags?post=924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}