{"id":124,"date":"2022-02-22T17:48:04","date_gmt":"2022-02-22T09:48:04","guid":{"rendered":"https:\/\/blog.zjia.me\/?p=124"},"modified":"2026-06-19T21:57:27","modified_gmt":"2026-06-19T13:57:27","slug":"%e6%ad%a3%e5%88%99-%e5%8c%b9%e9%85%8d%e6%95%b0%e5%ad%97%e5%92%8c%e6%97%a5%e6%9c%9f","status":"publish","type":"post","link":"https:\/\/blog.ttwow.top\/?p=124","title":{"rendered":"\u6b63\u5219 \u5339\u914d\u6570\u5b57\u548c\u65e5\u671f"},"content":{"rendered":"<pre><code class=\"language-java\">public class Test {\n     \/**\n     * \u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u662f\u6570\u5b57\u3002\n     *\n     * @param string\n     * @return\n     *\/\n    public static boolean isNumber(String string) {\n        if (string == null)\n            return false;\n        Pattern pattern = Pattern.compile(&quot;^-?\\\\d+(\\\\.\\\\d+)?$&quot;);\n        return pattern.matcher(string).matches();\n    }\n\n    private static void isNumberTest() {\n        System.out.println(isNumber(&quot;580&quot;));\n        System.out.println(isNumber(&quot;5234254125424584&quot;));\n        System.out.println(isNumber(&quot;dfg15s4df5sd1fds&quot;));\n    }\n\n    public static void main(String[] args) {\n        isNumberTest();\n    }\n\n}<\/code><\/pre>\n<pre><code class=\"language-java\">Pattern p = Pattern.compile(&quot;(\\\\d{4}\\\\-\\\\d{1,2}\\\\-\\\\d{1,2})+&quot;);\nMatcher m = p.matcher(testStr);\nif(!m.find())\n{\n    testStr = &quot;2000-01-01&quot;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>public class Test { \/** * \u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u662f\u6570\u5b57\u3002 * * @param stri [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[135],"tags":[99],"class_list":["post-124","post","type-post","status-publish","format-standard","hentry","category-code-snippets","tag-99"],"_links":{"self":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=124"}],"version-history":[{"count":1,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/124\/revisions"}],"predecessor-version":[{"id":2197,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/124\/revisions\/2197"}],"wp:attachment":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}