{"id":31217,"date":"2022-07-07T14:17:55","date_gmt":"2023-01-06T14:06:28","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8mybatis%e5%a4%84%e7%90%86java-8%e7%9a%84java-time-localdatetime%e3%80%82\/"},"modified":"2025-08-12T22:53:37","modified_gmt":"2025-08-12T14:53:37","slug":"%e4%bd%bf%e7%94%a8mybatis%e5%a4%84%e7%90%86java-8%e7%9a%84java-time-localdatetime%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8mybatis%e5%a4%84%e7%90%86java-8%e7%9a%84java-time-localdatetime%e3%80%82\/","title":{"rendered":"\u4f7f\u7528MyBatis\u5904\u7406Java 8\u7684java.time.LocalDateTime"},"content":{"rendered":"<h1>\u8fd9\u4e2a\u6982\u8ff0\u63d0\u4f9b\u4e86\u7b80\u8981\u7684\u4fe1\u606f\u3002\u5728\u6211\u7684\u4e1a\u52a1\u4e2d\u4f7f\u7528MyBatis\uff0c\u4f46\u5728\u5347\u7ea7\u5230Java 8\u65f6\uff0c\u7531\u4e8e\u4eba\u4eec\u8bf4\u4f7f\u7528\u4e86Date and Time API (JSR 310)\u540e\u65e5\u671f\u76f8\u5173\u7684\u64cd\u4f5c\u66f4\u65b9\u4fbf\uff0c\u6240\u4ee5\u6211\u51b3\u5b9a\u5c06DTO\u7684\u5b57\u6bb5\u4fee\u6539\u4e3aLocalDateTime\uff0c\u5e76\u5728\u8c03\u67e5\u540e\u5f97\u51fa\u4e86\u8fd9\u4e2a\u7ed3\u8bba\u3002<\/p>\n<p>\u56e0\u4e3a\u5728MyBatis\u7684\u5b98\u65b9\u6587\u6863\u4e2d\u6709\u5199\u660e\uff0c\u6240\u4ee5\u6211\u80fd\u8f7b\u677e\u5730\u5b8c\u6210\u4e86\u3002<\/p>\n<h2>\u8868\u683c (MySQL)<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span> <span class=\"nv\">`sample`<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"nv\">`id`<\/span> <span class=\"nb\">int<\/span><span class=\"p\">(<\/span><span class=\"mi\">10<\/span><span class=\"p\">)<\/span> <span class=\"k\">NOT<\/span> <span class=\"k\">NULL<\/span> <span class=\"n\">AUTO_INCREMENT<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"nv\">`created`<\/span> <span class=\"nb\">datetime<\/span> <span class=\"k\">DEFAULT<\/span> <span class=\"k\">NULL<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"k\">PRIMARY<\/span> <span class=\"k\">KEY<\/span> <span class=\"p\">(<\/span><span class=\"nv\">`id`<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">)<\/span> <span class=\"n\">ENGINE<\/span><span class=\"o\">=<\/span><span class=\"n\">InnoDB<\/span> <span class=\"k\">DEFAULT<\/span> <span class=\"n\">CHARSET<\/span><span class=\"o\">=<\/span><span class=\"n\">utf8<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h2>\u7528\u4e8e\u5b58\u50a8\u7ed3\u679c\u7684DTO<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">java.time.LocalDateTime<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">lombok.Data<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"nd\">@Data<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">SampleDto<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kt\">int<\/span> <span class=\"n\">id<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"nc\">LocalDateTime<\/span> <span class=\"n\">created<\/span><span class=\"o\">;<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u60f3\u5c06\u8fd9\u4e2acreated\u4e0eSQL\u7684\u7ed3\u679c\u8fdb\u884c\u6620\u5c04\u3002<\/p>\n<h2>\u7c7b\u578b\u5904\u7406\u5668<br \/>\n\u542c\u8d77\u6765\u597d\u50cf\u662f\u5efa\u8bae\u5b9e\u73b0org.apache.ibatis.type.TypeHandler\u6216\u8005org.apache.ibatis.type.BaseTypeHandler\u6765\u6620\u5c04JDBC\u7c7b\u3002<br \/>\n\u8fd9\u6b21\u6211\u5c1d\u8bd5\u5b9e\u73b0\u4e86BaseTypeHandler\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nd\">@MappedTypes<\/span><span class=\"o\">(<\/span><span class=\"nc\">LocalDateTime<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">)<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">LocalDateTimeTypeHandler<\/span>\r\n        <span class=\"kd\">extends<\/span> <span class=\"nc\">BaseTypeHandler<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">LocalDateTime<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">{<\/span>\r\n\r\n    <span class=\"nd\">@Override<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">setNonNullParameter<\/span><span class=\"o\">(<\/span><span class=\"nc\">PreparedStatement<\/span> <span class=\"n\">ps<\/span><span class=\"o\">,<\/span> <span class=\"kt\">int<\/span> <span class=\"n\">i<\/span><span class=\"o\">,<\/span> <span class=\"nc\">LocalDateTime<\/span> <span class=\"n\">parameter<\/span><span class=\"o\">,<\/span> <span class=\"nc\">JdbcType<\/span> <span class=\"n\">jdbcType<\/span><span class=\"o\">)<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">SQLException<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"n\">ps<\/span><span class=\"o\">.<\/span><span class=\"na\">setTimestamp<\/span><span class=\"o\">(<\/span><span class=\"n\">i<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Timestamp<\/span><span class=\"o\">.<\/span><span class=\"na\">valueOf<\/span><span class=\"o\">(<\/span><span class=\"n\">parameter<\/span><span class=\"o\">));<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"nd\">@Override<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"nc\">LocalDateTime<\/span> <span class=\"nf\">getNullableResult<\/span><span class=\"o\">(<\/span><span class=\"nc\">ResultSet<\/span> <span class=\"n\">rs<\/span><span class=\"o\">,<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">columnName<\/span><span class=\"o\">)<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">SQLException<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">Timestamp<\/span> <span class=\"n\">timestamp<\/span> <span class=\"o\">=<\/span> <span class=\"n\">rs<\/span><span class=\"o\">.<\/span><span class=\"na\">getTimestamp<\/span><span class=\"o\">(<\/span><span class=\"n\">columnName<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">timestamp<\/span> <span class=\"o\">==<\/span> <span class=\"kc\">null<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"kc\">null<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">timestamp<\/span><span class=\"o\">.<\/span><span class=\"na\">toLocalDateTime<\/span><span class=\"o\">();<\/span>\r\n        <span class=\"o\">}<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"nd\">@Override<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"nc\">LocalDateTime<\/span> <span class=\"nf\">getNullableResult<\/span><span class=\"o\">(<\/span><span class=\"nc\">ResultSet<\/span> <span class=\"n\">rs<\/span><span class=\"o\">,<\/span> <span class=\"kt\">int<\/span> <span class=\"n\">columnIndex<\/span><span class=\"o\">)<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">SQLException<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">Timestamp<\/span> <span class=\"n\">timestamp<\/span> <span class=\"o\">=<\/span> <span class=\"n\">rs<\/span><span class=\"o\">.<\/span><span class=\"na\">getTimestamp<\/span><span class=\"o\">(<\/span><span class=\"n\">columnIndex<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">timestamp<\/span> <span class=\"o\">==<\/span> <span class=\"kc\">null<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"kc\">null<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">timestamp<\/span><span class=\"o\">.<\/span><span class=\"na\">toLocalDateTime<\/span><span class=\"o\">();<\/span>\r\n        <span class=\"o\">}<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"nd\">@Override<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"nc\">LocalDateTime<\/span> <span class=\"nf\">getNullableResult<\/span><span class=\"o\">(<\/span><span class=\"nc\">CallableStatement<\/span> <span class=\"n\">cs<\/span><span class=\"o\">,<\/span> <span class=\"kt\">int<\/span> <span class=\"n\">columnIndex<\/span><span class=\"o\">)<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">SQLException<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">Timestamp<\/span> <span class=\"n\">timestamp<\/span> <span class=\"o\">=<\/span> <span class=\"n\">cs<\/span><span class=\"o\">.<\/span><span class=\"na\">getTimestamp<\/span><span class=\"o\">(<\/span><span class=\"n\">columnIndex<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">timestamp<\/span> <span class=\"o\">==<\/span> <span class=\"kc\">null<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"kc\">null<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">timestamp<\/span><span class=\"o\">.<\/span><span class=\"na\">toLocalDateTime<\/span><span class=\"o\">();<\/span>\r\n        <span class=\"o\">}<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u6211\u7684Batis\u914d\u7f6e\u6587\u4ef6\u662fmybatis-config.xml\u3002<br \/>\n\u5728mybatis-config.xml\u4e2d\u6dfb\u52a0\u8bbe\u7f6e\u4ee5\u67e5\u627e\u521b\u5efa\u7684TypeHandler\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;configuration&gt;<\/span>\r\n  <span class=\"nt\">&lt;typeHandlers&gt;<\/span>\r\n    <span class=\"nt\">&lt;typeHandler<\/span> <span class=\"na\">handler=<\/span><span class=\"s\">\"sample.mybatis.handlers.LocalDateTimeTypeHandler\"<\/span><span class=\"nt\">\/&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/typeHandlers&gt;<\/span>\r\n<span class=\"nt\">&lt;\/configuration&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u6216\u8005.<\/p>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;configuration&gt;<\/span>\r\n  <span class=\"nt\">&lt;typeHandlers&gt;<\/span>\r\n    <span class=\"nt\">&lt;package<\/span> <span class=\"na\">name=<\/span><span class=\"s\">\"sample.mybatis.handlers\"<\/span><span class=\"nt\">\/&gt;<\/span>\r\n  <span class=\"nt\">&lt;\/typeHandlers&gt;<\/span>\r\n<span class=\"nt\">&lt;\/configuration&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u5c06\u5b9e\u73b0\u65b9\u6cd5\u7ec4\u5408\u5230\u540c\u4e00\u4e2a\u5305\u4e2d\u5e76\u8fdb\u884c\u5305\u6307\u5b9a\u4f1a\u66f4\u65b9\u4fbf\u5427\u3002<\/p>\n<h2>\u5236\u56fe\u5458<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">interface<\/span> <span class=\"nc\">SampleMapper<\/span> <span class=\"o\">{<\/span>\r\n\r\n    <span class=\"nd\">@Select<\/span><span class=\"o\">(<\/span><span class=\"s\">\"SELECT * FROM sample)\r\n    List&lt;SampleDto&gt; selectAll();\r\n\r\n    @Insert(\"<\/span><span class=\"n\">insert<\/span> <span class=\"n\">into<\/span> <span class=\"nf\">sample<\/span> <span class=\"o\">(<\/span><span class=\"n\">created<\/span><span class=\"o\">)<\/span> <span class=\"n\">values<\/span> <span class=\"o\">(<\/span> <span class=\"err\">#<\/span><span class=\"o\">{<\/span><span class=\"n\">created<\/span><span class=\"o\">}<\/span> <span class=\"o\">)<\/span><span class=\"s\">\")\r\n    @SelectKey(before = false, keyProperty = \"<\/span><span class=\"n\">id<\/span><span class=\"s\">\", resultType = int.class, statement = { \"<\/span><span class=\"n\">select<\/span> <span class=\"nf\">last_insert_id<\/span><span class=\"o\">()<\/span><span class=\"err\">\"<\/span> <span class=\"o\">})<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"nf\">insert<\/span><span class=\"o\">(<\/span><span class=\"nc\">SampleDto<\/span> <span class=\"n\">sampleDto<\/span><span class=\"o\">);<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u53ea\u9700\u50cf\u666e\u901a\u4e00\u6837\u4f7f\u7528Mapper\u5373\u53ef\u5c06\u641c\u7d22\u548c\u6ce8\u518c\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u6620\u5c04\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u4e2a\u6982\u8ff0\u63d0\u4f9b\u4e86\u7b80\u8981\u7684\u4fe1\u606f\u3002\u5728\u6211\u7684\u4e1a\u52a1\u4e2d\u4f7f\u7528MyBatis\uff0c\u4f46\u5728\u5347\u7ea7\u5230Java 8\u65f6\uff0c\u7531\u4e8e\u4eba\u4eec\u8bf4\u4f7f\u7528\u4e86Date  [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31217","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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