{"id":36756,"date":"2023-11-25T13:10:20","date_gmt":"2023-11-27T11:13:31","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/apache-commons-beanutils-%e6%9c%89%e4%bb%80%e4%b9%88%e9%9a%be%e7%82%b9%e3%80%82\/"},"modified":"2024-05-04T10:43:35","modified_gmt":"2024-05-04T02:43:35","slug":"apache-commons-beanutils-%e6%9c%89%e4%bb%80%e4%b9%88%e9%9a%be%e7%82%b9%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/apache-commons-beanutils-%e6%9c%89%e4%bb%80%e4%b9%88%e9%9a%be%e7%82%b9%e3%80%82\/","title":{"rendered":"Apache Commons BeanUtils \u6709\u4ec0\u4e48\u96be\u70b9"},"content":{"rendered":"<p>\u5728\u4f7f\u7528Apache Commons BeanUtils\u65f6\u9047\u5230\u7684\u95ee\u9898\u8bb0\u5f55<\/p>\n<h5>\u786e\u8ba4\u7684\u7248\u672c<\/h5>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Java 8<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Apache Common BeanUtils 1.8.3\uff5e1.9.4<\/ul>\n<h5>\u9a8c\u8bc1\u4ee3\u7801<\/h5>\n<p>Bean.java -&gt; \u8c46\u7c7b.java<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Bean<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"nc\">Timestamp<\/span> <span class=\"n\">timestamp<\/span><span class=\"o\">;<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"nc\">Timestamp<\/span> <span class=\"nf\">getTimestamp<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"n\">timestamp<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"o\">}<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">setTimestamp<\/span><span class=\"o\">(<\/span><span class=\"nc\">Timestamp<\/span> <span class=\"n\">timestamp<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"k\">this<\/span><span class=\"o\">.<\/span><span class=\"na\">timestamp<\/span> <span class=\"o\">=<\/span> <span class=\"n\">timestamp<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4e3b\u8981\u7684.java\u6587\u4ef6<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Main<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">Exception<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">Bean<\/span> <span class=\"n\">bean<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Bean<\/span><span class=\"o\">();<\/span>\r\n\r\n        <span class=\"c1\">\/\/ 1.9.3\u4ee5\u524d\u3067\u306f\u3001Object.getClass()\u3092\u30a2\u30af\u30bb\u30b5\u3068\u89e3\u91c8\u3057\u3066\"class\"\u304c\u30d7\u30ed\u30d1\u30c6\u30a3\u4e00\u89a7\u306b\u542b\u307e\u308c\u308b\u3002<\/span>\r\n        <span class=\"nc\">BeanUtils<\/span><span class=\"o\">.<\/span><span class=\"na\">describe<\/span><span class=\"o\">(<\/span><span class=\"n\">bean<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"c1\">\/\/ =&gt; 1.9.3\u4ee5\u524d\uff1a{class=class test.Bean, timestamp=null}<\/span>\r\n        <span class=\"c1\">\/\/    1.9.4\uff1a{timestamp=null}<\/span>\r\n        <span class=\"c1\">\/\/ \u203b PropertyUtils.describe(bean) \u3082\u540c\u69d8\u306e\u7d50\u679c\u3068\u306a\u308b\u3002<\/span>\r\n\r\n        <span class=\"c1\">\/\/ 1.9.3\u4ee5\u524d\u3067\u306f\u3001setProperty\u3068copyProperty\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8a2d\u5b9a\u3057\u305f\u3068\u304d\u306e\u6319\u52d5\u304c\u7570\u306a\u308b\u3002<\/span>\r\n        <span class=\"nc\">BeanUtils<\/span><span class=\"o\">.<\/span><span class=\"na\">setProperty<\/span><span class=\"o\">(<\/span><span class=\"n\">bean<\/span><span class=\"o\">,<\/span> <span class=\"s\">\"class\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Bean<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"c1\">\/\/ =&gt; \u4f55\u3082\u5b9f\u884c\u3055\u308c\u306a\u3044\u3002<\/span>\r\n        <span class=\"nc\">BeanUtils<\/span><span class=\"o\">.<\/span><span class=\"na\">copyProperty<\/span><span class=\"o\">(<\/span><span class=\"n\">bean<\/span><span class=\"o\">,<\/span> <span class=\"s\">\"class\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Bean<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"c1\">\/\/ =&gt; 1.9.3\u4ee5\u524d\uff1ajava.lang.reflect.InvocationTargetException: Cannot set class \u304c\u767a\u751f\u3059\u308b\u3002<\/span>\r\n        <span class=\"c1\">\/\/    1.9.4\uff1a\u4f55\u3082\u5b9f\u884c\u3055\u308c\u306a\u3044\u3002(BEANUTILS-520\u306e\u5f71\u97ff\u3067\u632f\u308b\u821e\u3044\u304c\u5909\u308f\u3063\u305f\uff1f\uff09<\/span>\r\n\r\n        <span class=\"c1\">\/\/ setProperty\u3068copyProperty\u3067\u4e00\u90e8\u306e\u578b\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306bnull\u3092\u8a2d\u5b9a\u3057\u3088\u3046\u3068\u3057\u305f\u3068\u304d\u306e\u6319\u52d5\u304c\u7570\u306a\u308b\u3002<\/span>\r\n        <span class=\"nc\">BeanUtils<\/span><span class=\"o\">.<\/span><span class=\"na\">setProperty<\/span><span class=\"o\">(<\/span><span class=\"n\">bean<\/span><span class=\"o\">,<\/span> <span class=\"s\">\"timestamp\"<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"c1\">\/\/ =&gt; org.apache.commons.beanutils.ConversionException: No value specified for 'java.sql.Timestamp' \u304c\u767a\u751f\u3059\u308b\u3002<\/span>\r\n        <span class=\"nc\">BeanUtils<\/span><span class=\"o\">.<\/span><span class=\"na\">copyProperty<\/span><span class=\"o\">(<\/span><span class=\"n\">bean<\/span><span class=\"o\">,<\/span> <span class=\"s\">\"timestamp\"<\/span><span class=\"o\">,<\/span> <span class=\"kc\">null<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"c1\">\/\/ =&gt; 1.8.3\u4ee5\u524d\uff1acopyProperty\u540c\u69d8\u306bConversionException\u304c\u767a\u751f\u3057\u3066\u3044\u305f\u3002<\/span>\r\n        <span class=\"c1\">\/\/    1.9.0\u4ee5\u964d\uff1a\u4f55\u3082\u5b9f\u884c\u3055\u308c\u306a\u3044\u3002(BEANUTILS-454\u306b\u3066\u4fee\u6b63)<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h5>\u8bf7\u53c2\u8003<\/h5>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">https:\/\/issues.apache.org\/jira\/browse\/BEANUTILS-454<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">https:\/\/issues.apache.org\/jira\/browse\/BEANUTILS-520<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u4f7f\u7528Apache Commons BeanUtils\u65f6\u9047\u5230\u7684\u95ee\u9898\u8bb0\u5f55 \u786e\u8ba4\u7684\u7248\u672c Java 8 &nbsp; [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-36756","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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>Apache Commons BeanUtils \u6709\u4ec0\u4e48\u96be\u70b9 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/apache-commons-beanutils-\u6709\u4ec0\u4e48\u96be\u70b9\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Apache Commons BeanUtils \u6709\u4ec0\u4e48\u96be\u70b9\" \/>\n<meta property=\"og:description\" content=\"\u5728\u4f7f\u7528Apache Commons BeanUtils\u65f6\u9047\u5230\u7684\u95ee\u9898\u8bb0\u5f55 \u786e\u8ba4\u7684\u7248\u672c Java 8 &nbsp; 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