{"id":5818,"date":"2024-04-16T00:12:15","date_gmt":"2024-04-15T16:12:15","guid":{"rendered":"http:\/\/zyg.luchers.cn\/?p=5818"},"modified":"2024-04-16T00:12:15","modified_gmt":"2024-04-15T16:12:15","slug":"%e4%b8%89%e3%80%81mybatisplus%e9%ab%98%e7%ba%a7%e6%89%a9%e5%b1%95%ef%bc%88%e9%80%bb%e8%be%91%e5%88%a0%e9%99%a4%e3%80%81%e4%b9%90%e8%a7%82%e9%94%81%e3%80%81%e9%98%b2%e6%ad%a2%e5%85%a8%e8%a1%a8%e6%9b%b4","status":"publish","type":"post","link":"http:\/\/zyg.luchers.cn\/index.php\/2024\/04\/16\/%e4%b8%89%e3%80%81mybatisplus%e9%ab%98%e7%ba%a7%e6%89%a9%e5%b1%95%ef%bc%88%e9%80%bb%e8%be%91%e5%88%a0%e9%99%a4%e3%80%81%e4%b9%90%e8%a7%82%e9%94%81%e3%80%81%e9%98%b2%e6%ad%a2%e5%85%a8%e8%a1%a8%e6%9b%b4\/","title":{"rendered":"\u4e09\u3001MybatisPlus\u9ad8\u7ea7\u6269\u5c55\uff08\u903b\u8f91\u5220\u9664\u3001\u4e50\u89c2\u9501\u3001\u9632\u6b62\u5168\u8868\u66f4\u65b0\u548c\u5220\u9664\uff09"},"content":{"rendered":"<h1>\u4e09\u3001MybatisPlus\u9ad8\u7ea7\u6269\u5c55<\/h1>\n<h2>1\u3001\u903b\u8f91\u5220\u9664<\/h2>\n<h3>1\u3001\u6982\u5ff5<\/h3>\n<p>1\u3001\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u5bf9\u6570\u636e\u5e93\u8bb0\u5f55\u7684\u903b\u8f91\u5220\u9664\u800c\u4e0d\u662f\u7269\u7406\u5220\u9664\u3002<\/p>\n<p>2\u3001\u903b\u8f91\u5220\u9664\u662f\u6307\u901a\u8fc7\u66f4\u6539\u8bb0\u5f55\u7684\u72b6\u6001\u6216\u6dfb\u52a0\u6807\u8bb0\u5b57\u6bb5\u6765\u6a21\u62df\u5220\u9664\u64cd\u4f5c\uff0c\u4ece\u800c\u4fdd\u7559\u4e86\u5220\u9664\u524d\u7684\u6570\u636e\uff0c\u4fbf\u4e8e\u540e\u7eed\u7684\u6570\u636e\u5206\u6790\u548c\u6062\u590d\u3002<\/p>\n<h4>1\u3001\u6bd4\u8f83\u903b\u8f91\u5220\u9664\u548c\u7269\u7406\u5220\u9664<\/h4>\n<p>1\u3001\u7269\u7406\u5220\u9664<\/p>\n<ul>\n<li>\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u5bf9\u6570\u636e\u5e93\u8bb0\u5f55\u7684\u903b\u8f91\u5220\u9664\u800c\u4e0d\u662f\u7269\u7406\u5220\u9664\u3002\u903b\u8f91\u5220\u9664\u662f\u6307<\/li>\n<\/ul>\n<p>2\u3001\u903b\u8f91\u5220\u9664<\/p>\n<ul>\n<li>\u903b\u8f91\u5220\u9664\uff1a\u5047\u5220\u9664\uff0c\u5c06\u5bf9\u5e94\u6570\u636e\u4e2d\u4ee3\u8868\u662f\u5426\u88ab\u5220\u9664\u5b57\u6bb5\u7684\u72b6\u6001\u4fee\u6539\u4e3a\u201c\u88ab\u5220\u9664\u72b6\u6001\u201d\uff0c\u4e4b\u540e\u5728\u6570\u636e\u5e93\u4e2d\u4ecd\u65e7\u80fd\u770b\u5230\u6b64\u6761\u6570\u636e\u8bb0\u5f55<\/li>\n<\/ul>\n<h3>2\u3001\u5b9e\u73b0<\/h3>\n<h4>1\u3001\u6b65\u9aa4<\/h4>\n<p>1\u3001\u5728\u6570\u636e\u5e93\u548c\u5b9e\u4f53\u7c7b\u90fd\u6dfb\u52a0\u4ee3\u8868\u88ab\u5220\u9664\u7684\u5b57\u6bb5\u3002\u5230\u65f6\u5019\u67e5\u8be2\u5c31\u65b9\u4fbf\u4e86<\/p>\n<p>2\u3001\u7528@TableLogic\u6ce8\u89e3\u6307\u5b9a\u4e00\u4e2a\u903b\u8f91\u5220\u9664\u7684\u5b57\u6bb5\u3010MybatisPlus\u4f1a\u505a\u597d\u5176\u4ed6\u5de5\u4f5c\u3011<\/p>\n<p>3\u3001\u6b63\u5e38\u7f16\u5199\u4ee3\u7801<\/p>\n<h4>2\u3001\u4f8b\u5b50<\/h4>\n<p>1\u3001\u6570\u636e\u5e93\u51c6\u5907deleter\u5b57\u6bb5<\/p>\n<pre><code class=\"language-sql\">ALTER TABLE USER ADD deleted INT DEFAULT 0 ;  # int \u7c7b\u578b 1 \u903b\u8f91\u5220\u9664 0 \u672a\u903b\u8f91\u5220\u9664<\/code><\/pre>\n<p>2\u3001java\u5b9e\u4f53\u7c7b\u51c6\u5907deleter\u5b57\u6bb5<\/p>\n<pre><code class=\"language-java\">package com.atguigu.pojo;\n\nimport com.baomidou.mybatisplus.annotation.*;\nimport lombok.Data;\n\n\/**\n * @TableName(&quot;user&quot;)\u8fd9\u4e2a\u6ce8\u89e3\u53ef\u4ee5\u4e0d\u52a0\n *  \u76f4\u63a5\u4f7f\u7528\u5b9e\u4f53\u7c7b\u7684\u540d\u5b57\u4f5c\u4e3a\u6570\u636e\u5e93\u7684\u8868\u540d\n *  \u5ffd\u7565\u5927\u5c0f\u5199\n *  \u5f53\u6570\u636e\u5e93\u7684\u8868\u540d\u4e0e\u5b9e\u4f53\u7c7b\u547d\u540d\u4e0d\u540c\uff08\u5ffd\u7565\u5927\u5c0f\u5199\uff09\u4f7f\u7528@TableName()\u6765\u6307\u5b9a\u8868\u540d\n *  \u8fd9\u4e2a\u662f\u5355\u4e2a\u4fee\u6539\uff0c\u4e07\u4e00\u6709\u5f88\u591a\u4e2a\u5b9e\u4f53\u7c7b\u9700\u8981\u4fee\u6539\u6210t_\u5f00\u5934\u5462\u3002\n *\/\n\n@TableName(&quot;user&quot;)\n@Data\npublic class User {\n\n\/\/    \u4ece\u5355\u4e00\u8868\u8bbe\u7f6e\uff0c\u6570\u636e\u4e3b\u952e\u81ea\u589e\u957f\n    @TableId(type = IdType.AUTO )\n    private Integer id;\n\/\/    \u5982\u679c\u6570\u636e\u5e93\u6ca1\u6709\u8fd9\u4e2a\u5b57\u6bb5\u3001\u6216\u8005\u5b57\u6bb5\u540d\u79f0\u548c\u5b9e\u4f53\u7c7b\u540d\u79f0\u4e0d\u540c\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u6dfb\u52a0\u8fd9\u4e2a\u6ce8\u89e3\n    @TableField(value = &quot;name&quot;)\n    private String name;\n    private  Integer age;\n    private String email;\n\n    \/*\n        \u5f53\u524d\u5c5e\u6027\u5bf9\u5e94\u7684\u5217\u5c31\u662f\u903b\u8f91\u5220\u9664\u7684\u5b57\u6bb5\uff08\u5c5e\u6027\uff09\n        \u5f53\u5220\u9664\u7684\u65f6\u5019\u5c5e\u6027\u503c\u5c31\u9ed8\u8ba4\u4e3a0\uff0c\u4e0d\u5220\u9664\u5c31\u662f1\n        \u903b\u8f91\u5220\u9664\uff1a\u672c\u8d28\u5c31\u662f\u4fee\u6539\u64cd\u4f5c\n     *\/\n    @TableLogic\n    private Integer deleter;\n\n    @Version\n    private Integer version;\n}\n<\/code><\/pre>\n<p>3\u3001\u5728\u5b9e\u4f53\u7c7b\u5236\u5b9a\u5355\u4e00\u5b57\u6bb5<\/p>\n<pre><code class=\"language-java\">\/*\n        \u5f53\u524d\u5c5e\u6027\u5bf9\u5e94\u7684\u5217\u5c31\u662f\u903b\u8f91\u5220\u9664\u7684\u5b57\u6bb5\uff08\u5c5e\u6027\uff09\n        \u5f53\u5220\u9664\u7684\u65f6\u5019\u5c5e\u6027\u503c\u5c31\u9ed8\u8ba4\u4e3a0\uff0c\u4e0d\u5220\u9664\u5c31\u662f1\n        \u903b\u8f91\u5220\u9664\uff1a\u672c\u8d28\u5c31\u662f\u4fee\u6539\u64cd\u4f5c\n     *\/\n    @TableLogic\n    private Integer deleter;<\/code><\/pre>\n<p>4\u3001\u4e5f\u53ef\u4ee5\u5728application.yaml\u4e2d\u6307\u5b9a\u914d\u7f6e\u7c7b\u7684deleter\u5b57\u6bb5<\/p>\n<pre><code class=\"language-yaml\"># \u8fde\u63a5\u6c60\u914d\u7f6e\nspring:\n  datasource:\n    type: com.alibaba.druid.pool.DruidDataSource\n\n    url: jdbc:mysql:\/\/\/manager\n    username: root\n    password: root\n    driver-class-name: com.mysql.cj.jdbc.Driver\nmybatis-plus:\n  configuration:\n    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl\n  type-aliases-package: com.atguigu.pojo\n  global-config:\n    db-config:\n      table-prefix: t_  #\u6570\u636e\u5e93\u8868\u540d\u7684\u524d\u7f00 \u4e0d\u7528\u5728\u6bcf\u4e2a\u5b9e\u4f53\u7c7b\u914d\u7f6e\n      id-type: assign_id #\u8fd9\u4e2a\u662f\u8bbe\u7f6e\u6bcf\u4e2a\u8868\u90fd\u8fd9\u6837\uff0c\u5168\u5c40\u8bbe\u7f6e\n\n      #\u8bbe\u7f6e\u903b\u8f91\u5220\u9664\u5b57\u6bb5\n      logic-delete-field: deleter #\u903b\u8f91\u5220\u9664\u7684\u5c5e\u6027\n      logic-delete-value: 0 #\u8868\u793a\u5df2\u7ecf\u903b\u8f91\u5220\u9664\u4e86\n      logic-not-delete-value: 1 #\u8868\u793a\u6ca1\u6709\u903b\u8f91\u5220\u9664<\/code><\/pre>\n<p>5\u3001\u6d4b\u8bd5\u4ee3\u7801<\/p>\n<pre><code class=\"language-java\">package com.atguigu;\n\nimport com.atguigu.mapper.UserMapper;\nimport com.atguigu.pojo.User;\nimport org.junit.jupiter.api.Test;\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.boot.test.context.SpringBootTest;\n\n@SpringBootTest\npublic class MyBatisPlusTableLogicTest {\n\n    @Autowired\n    private UserMapper userMapper;\n\n    @Test\n    public void testLogicDelete() {\n        userMapper.deleteById(1);\n\n        userMapper.selectList(null);\n    }\n}\n<\/code><\/pre>\n<h3>3\u3001\u603b\u7ed3<\/h3>\n<p>1\u3001\u91cc\u9762\u6d89\u53ca\u5230\u4e86@TableLogic<\/p>\n<p>2\u3001@TableLogic<\/p>\n<ul>\n<li>\u5f53\u524d\u5c5e\u6027\u5bf9\u5e94\u7684\u5217\u5c31\u662f\u903b\u8f91\u5220\u9664\u7684\u5b57\u6bb5\uff08\u5c5e\u6027\uff09<\/li>\n<li>\u5f53\u5220\u9664\u7684\u65f6\u5019\u5c5e\u6027\u503c\u5c31\u9ed8\u8ba4\u4e3a0\uff0c\u4e0d\u5220\u9664\u5c31\u662f1<\/li>\n<li>\u903b\u8f91\u5220\u9664\uff1a\u672c\u8d28\u5c31\u662f\u4fee\u6539\u64cd\u4f5c<\/li>\n<\/ul>\n<p>3\u3001\u662f\u4e00\u79cd\u601d\u8def<\/p>\n<h2>2\u3001\u4e50\u89c2\u9501<\/h2>\n<h3>1\u3001\u4ecb\u7ecd<\/h3>\n<h4>1\u3001\u9700\u6c42<\/h4>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/zyg.luchers.cn\/wp-content\/uploads\/2024\/04\/image-20240124114421910.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" data-original=\"http:\/\/zyg.luchers.cn\/wp-content\/uploads\/2024\/04\/image-20240124114421910.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"image-20240124114421910\" \/><\/div><\/p>\n<p>1\u3001\u5e76\u53d1\u53ef\u80fd\u4f1a\u4ea7\u751f\u810f\u8bfb\u3002<\/p>\n<p>2\u3001\u672c\u8d28\u662f\u6570\u636e\u4e0d\u540c\u6b65<\/p>\n<h4>2\u3001\u601d\u8def<\/h4>\n<p>\u4e50\u89c2\u9501\u548c\u60b2\u89c2\u9501\u662f\u5728\u5e76\u53d1\u7f16\u7a0b\u4e2d\u7528\u4e8e\u5904\u7406\u5e76\u53d1\u8bbf\u95ee\u548c\u8d44\u6e90\u7ade\u4e89\u7684\u4e24\u79cd\u4e0d\u540c\u7684\u9501\u673a\u5236!!<\/p>\n<h4>3\u3001\u4e50\u89c2\u9501<\/h4>\n<p>1\u3001\u4e50\u89c2\u9501\u7684\u57fa\u672c\u601d\u60f3\u662f\uff0c\u8ba4\u4e3a\u5e76\u53d1\u51b2\u7a81\u7684\u6982\u7387\u8f83\u4f4e\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u63d0\u524d\u52a0\u9501\uff0c\u800c\u662f\u5728\u6570\u636e\u66f4\u65b0\u9636\u6bb5\u8fdb\u884c\u51b2\u7a81\u68c0\u6d4b\u548c\u5904\u7406\u3002<\/p>\n<p>2\u3001\u4e50\u89c2\u9501\u7684\u6838\u5fc3\u601d\u60f3\u662f&quot;\u5148\u4fee\u6539\uff0c\u540e\u6821\u9a8c&quot;\u3002\u5728\u4e50\u89c2\u9501\u7684\u5e94\u7528\u4e2d\uff0c\u7ebf\u7a0b\u5728\u8bfb\u53d6\u5171\u4eab\u8d44\u6e90\u65f6\u4e0d\u4f1a\u52a0\u9501\uff0c\u800c\u662f\u8bb0\u5f55\u7279\u5b9a\u7684\u7248\u672c\u4fe1\u606f\u3002<\/p>\n<p>3\u3001\u5f53\u7ebf\u7a0b\u51c6\u5907\u66f4\u65b0\u8d44\u6e90\u65f6\uff0c\u4f1a\u5148\u68c0\u67e5\u8be5\u8d44\u6e90\u7684\u7248\u672c\u4fe1\u606f\u662f\u5426\u4e0e\u4e4b\u524d\u8bfb\u53d6\u7684\u7248\u672c\u4fe1\u606f\u4e00\u81f4\uff0c\u5982\u679c\u4e00\u81f4\u5219\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\uff0c\u5426\u5219\u8bf4\u660e\u6709\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\u4e86\u8be5\u8d44\u6e90\uff0c\u9700\u8981\u8fdb\u884c\u76f8\u5e94\u7684\u51b2\u7a81\u5904\u7406\u3002\u4e50\u89c2\u9501\u901a\u8fc7\u907f\u514d\u52a0\u9501\u64cd\u4f5c\uff0c\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u80fd\u548c\u541e\u5410\u91cf\uff0c\u4f46\u662f\u5728\u5e76\u53d1\u51b2\u7a81\u8f83\u4e3a\u9891\u7e41\u7684\u60c5\u51b5\u4e0b\uff0c\u4e50\u89c2\u9501\u4f1a\u5bfc\u81f4\u8f83\u591a\u7684\u51b2\u7a81\u5904\u7406\u548c\u91cd\u8bd5\u64cd\u4f5c\u3002<\/p>\n<p>4\u3001\u7c7b\u4f3c\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u540c\u6b65<\/p>\n<h4>4\u3001\u60b2\u89c2\u9501<\/h4>\n<p>1\u3001\u60b2\u89c2\u9501\u7684\u57fa\u672c\u601d\u60f3\u662f\uff0c\u5728\u6574\u4e2a\u6570\u636e\u8bbf\u95ee\u8fc7\u7a0b\u4e2d\uff0c\u5c06\u5171\u4eab\u8d44\u6e90\u9501\u5b9a\uff0c\u4ee5\u786e\u4fdd\u5176\u4ed6\u7ebf\u7a0b\u6216\u8fdb\u7a0b\u4e0d\u80fd\u540c\u65f6\u8bbf\u95ee\u548c\u4fee\u6539\u8be5\u8d44\u6e90\u3002<\/p>\n<p>2\u3001\u60b2\u89c2\u9501\u7684\u6838\u5fc3\u601d\u60f3\u662f&quot;\u5148\u4fdd\u62a4\uff0c\u518d\u4fee\u6539&quot;\u3002\u5728\u60b2\u89c2\u9501\u7684\u5e94\u7528\u4e2d\uff0c\u7ebf\u7a0b\u5728\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u4e4b\u524d\u4f1a\u83b7\u53d6\u5230\u9501\uff0c\u5e76\u5728\u6574\u4e2a\u64cd\u4f5c\u8fc7\u7a0b\u4e2d\u4fdd\u6301\u9501\u7684\u72b6\u6001\uff0c\u963b\u585e\u5176\u4ed6\u7ebf\u7a0b\u7684\u8bbf\u95ee\u3002<\/p>\n<p>3\u3001\u53ea\u6709\u5f53\u524d\u7ebf\u7a0b\u5b8c\u6210\u64cd\u4f5c\u540e\uff0c\u624d\u4f1a\u91ca\u653e\u9501\uff0c\u8ba9\u5176\u4ed6\u7ebf\u7a0b\u7ee7\u7eed\u64cd\u4f5c\u8d44\u6e90\u3002\u8fd9\u79cd\u9501\u673a\u5236\u53ef\u4ee5\u786e\u4fdd\u8d44\u6e90\u72ec\u5360\u6027\u548c\u6570\u636e\u7684\u4e00\u81f4\u6027\uff0c\u4f46\u662f\u5728\u9ad8\u5e76\u53d1\u73af\u5883\u4e0b\uff0c\u60b2\u89c2\u9501\u7684\u6548\u7387\u76f8\u5bf9\u8f83\u4f4e\u3002<\/p>\n<p>4\u3001\u7c7b\u4f3c\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u4e92\u65a5<\/p>\n<h4>5\u3001\u603b\u7ed3<\/h4>\n<p>1\u3001\u5b83\u4eec\u4e24\u4e2a\u662f\u601d\u60f3\u3002\u4e0d\u662f\u6280\u672f<\/p>\n<h3>2\u3001\u5177\u4f53\u6280\u672f\u5b9e\u73b0<\/h3>\n<h4>1\u3001\u4e50\u89c2\u9501\u5b9e\u73b0\u65b9\u6848\u548c\u6280\u672f\uff1a<\/h4>\n<ul>\n<li>\n<p>\u7248\u672c\u53f7\/\u65f6\u95f4\u6233\uff1a\u4e3a\u6570\u636e\u6dfb\u52a0\u4e00\u4e2a\u7248\u672c\u53f7\u6216\u65f6\u95f4\u6233\u5b57\u6bb5\uff0c\u6bcf\u6b21\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u6bd4\u8f83\u5f53\u524d\u7248\u672c\u53f7\u6216\u65f6\u95f4\u6233\u4e0e\u671f\u671b\u503c\u662f\u5426\u4e00\u81f4\uff0c\u82e5\u4e00\u81f4\u5219\u66f4\u65b0\u6210\u529f\uff0c\u5426\u5219\u8868\u793a\u6570\u636e\u5df2\u88ab\u4fee\u6539\uff0c\u9700\u8981\u8fdb\u884c\u51b2\u7a81\u5904\u7406\u3002<\/p>\n<\/li>\n<li>\n<p>CAS\uff08Compare-and-Swap\uff09\uff1a\u4f7f\u7528\u539f\u5b50\u64cd\u4f5c\u6bd4\u8f83\u5f53\u524d\u503c\u4e0e\u65e7\u503c\u662f\u5426\u4e00\u81f4\uff0c\u82e5\u4e00\u81f4\u5219\u8fdb\u884c\u66f4\u65b0\u64cd\u4f5c\uff0c\u5426\u5219\u91cd\u65b0\u5c1d\u8bd5\u3002<\/p>\n<\/li>\n<li>\n<p>\u65e0\u9501\u6570\u636e\u7ed3\u6784\uff1a\u91c7\u7528\u65e0\u9501\u6570\u636e\u7ed3\u6784\uff0c\u5982\u65e0\u9501\u961f\u5217\u3001\u65e0\u9501\u54c8\u5e0c\u8868\u7b49\uff0c\u901a\u8fc7\u4f7f\u7528\u539f\u5b50\u64cd\u4f5c\u5b9e\u73b0\u5e76\u53d1\u5b89\u5168\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>2\u3001\u60b2\u89c2\u9501\u5b9e\u73b0\u65b9\u6848\u548c\u6280\u672f\uff1a<\/h4>\n<ul>\n<li>\u9501\u673a\u5236\uff1a\u4f7f\u7528\u4f20\u7edf\u7684\u9501\u673a\u5236\uff0c\u5982\u4e92\u65a5\u9501\uff08Mutex Lock\uff09\u6216\u8bfb\u5199\u9501\uff08Read-Write Lock\uff09\u6765\u4fdd\u8bc1\u5bf9\u5171\u4eab\u8d44\u6e90\u7684\u72ec\u5360\u8bbf\u95ee\u3002<\/li>\n<li>\u6570\u636e\u5e93\u9501\uff1a\u5728\u6570\u636e\u5e93\u5c42\u9762\u4f7f\u7528\u884c\u7ea7\u9501\u6216\u8868\u7ea7\u9501\u6765\u63a7\u5236\u5e76\u53d1\u8bbf\u95ee\u3002<\/li>\n<li>\u4fe1\u53f7\u91cf\uff08Semaphore\uff09\uff1a\u4f7f\u7528\u4fe1\u53f7\u91cf\u6765\u9650\u5236\u5bf9\u8d44\u6e90\u7684\u5e76\u53d1\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<h3>3\u3001\u5b9e\u4f8b<\/h3>\n<h4>1\u3001\u5b9e\u73b0\u6d41\u7a0b<\/h4>\n<ul>\n<li>\u6bcf\u6761\u6570\u636e\u6dfb\u52a0\u4e00\u4e2a\u7248\u672c\u53f7\u5b57\u6bb5version<\/li>\n<li>\u53d6\u51fa\u8bb0\u5f55\u65f6\uff0c\u83b7\u53d6\u5f53\u524d version<\/li>\n<li>\u66f4\u65b0\u65f6\uff0c\u68c0\u67e5\u83b7\u53d6\u7248\u672c\u53f7\u662f\u4e0d\u662f\u6570\u636e\u5e93\u5f53\u524d\u6700\u65b0\u7248\u672c\u53f7<\/li>\n<li>\u5982\u679c\u662f[\u8bc1\u660e\u6ca1\u6709\u4eba\u4fee\u6539\u6570\u636e], \u6267\u884c\u66f4\u65b0, set \u6570\u636e\u66f4\u65b0 , version = version+ 1 <\/li>\n<li>\u5982\u679c version \u4e0d\u5bf9[\u8bc1\u660e\u6709\u4eba\u5df2\u7ecf\u4fee\u6539\u4e86]\uff0c\u6211\u4eec\u73b0\u5728\u7684\u5176\u4ed6\u8bb0\u5f55\u5c31\u662f\u5931\u6548\u6570\u636e!\u5c31\u66f4\u65b0\u5931\u8d25<\/li>\n<\/ul>\n<h4>2\u3001\u4ee3\u7801<\/h4>\n<p>1\u3001\u6dfb\u52a0\u7248\u672c\u53f7\u66f4\u65b0\u63d2\u4ef6<\/p>\n<ul>\n<li>\u5c31\u662f\u5728\u542f\u52a8\u7c7b\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u62e6\u622a\u5668<\/li>\n<\/ul>\n<pre><code class=\"language-java\">@Bean\n    public MybatisPlusInterceptor mybatisPlusInterceptor() {\n\/\/        \u628amybatis-plus\u7684\u63d2\u4ef6\u96c6\u5408\u3010\u653e\u5230\u96c6\u5408\u4e2d\u5c31\u884c\uff0c\u6709\u4e50\u89c2\u9501\uff0c\u60b2\u89c2\u9501\u3011\n        MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();\n\/\/        \u5206\u9875\u63d2\u4ef6\n        mybatisPlusInterceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));\n\n\/\/        \u6dfb\u52a0\u4e00\u4e2a\u4e50\u89c2\u9501\u3010\u7248\u672c\u53f7\u3011\u7684\u62e6\u622a\u63d2\u4ef6\n        mybatisPlusInterceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());\n\n\/\/        \u6dfb\u52a0\u548c\u9632\u6b62\u5168\u8868\u66f4\u65b0\u548c\u5220\u9664\u7684\u62e6\u622a\u5668\u3010\u9632\u6b62\u5220\u5e93\u8dd1\u8def\u3011\n        mybatisPlusInterceptor.addInnerInterceptor(new BlockAttackInnerInterceptor());\n\n        return mybatisPlusInterceptor;\n    }<\/code><\/pre>\n<p>2\u3001\u4e50\u89c2\u6240\u5b57\u6bb5\u6dfb\u52a0@Version\u6ce8\u89e3<\/p>\n<ul>\n<li>\u8fd9\u91cc\u5b9e\u4f53\u7c7b\u8981\u52a0\u6ce8\u89e3<\/li>\n<li>\u6570\u636e\u5e93\u7684\u8868\u4e5f\u8981\u6709version\u5b57\u6bb5<\/li>\n<li>\u652f\u6301\u7684\u6570\u636e\u7c7b\u578b\u53ea\u6709:int,Integer,long,Long,Date,Timestamp,LocalDateTime<\/li>\n<li>\u4ec5\u652f\u6301 <code>updateById(id)<\/code> \u4e0e <code>update(entity, wrapper)<\/code> \u65b9\u6cd5<\/li>\n<\/ul>\n<pre><code class=\"language-sql\">ALTER TABLE USER ADD VERSION INT DEFAULT 1 ;  # int \u7c7b\u578b \u4e50\u89c2\u9501\u5b57\u6bb5<\/code><\/pre>\n<pre><code class=\"language-java\">@Version\nprivate Integer version;<\/code><\/pre>\n<p>3\u3001\u6d4b\u8bd5\u4ee3\u7801<\/p>\n<pre><code class=\"language-java\">\/\/\u6f14\u793a\u4e50\u89c2\u9501\u751f\u6548\u573a\u666f\n@Test\npublic void testQuick7(){\n    \/\/\u6b65\u9aa41: \u5148\u67e5\u8be2,\u5728\u66f4\u65b0 \u83b7\u53d6version\u6570\u636e\n    \/\/\u540c\u65f6\u67e5\u8be2\u4e24\u6761,\u4f46\u662fversion\u552f\u4e00,\u6700\u540e\u66f4\u65b0\u7684\u5931\u8d25\n    User user  = userMapper.selectById(5);\n    User user1  = userMapper.selectById(5);\n\n    user.setAge(20);\n    user1.setAge(30);\n\n    userMapper.updateById(user);\n    \/\/\u4e50\u89c2\u9501\u751f\u6548,\u5931\u8d25!\n    userMapper.updateById(user1);\n}<\/code><\/pre>\n<h2>3\u3001\u9632\u6b62\u5168\u8868\u66f4\u65b0\u548c\u5220\u9664<\/h2>\n<h3>1\u3001\u9700\u6c42<\/h3>\n<p>1\u3001\u4e3b\u8981\u662f\u9488\u5bf9\u5b89\u6b47\u8981\u5220\u5e93\u8dd1\u8def\u7684\u4eba<\/p>\n<p>2\u3001\u9488\u5bf9 update \u548c delete \u8bed\u53e5 <\/p>\n<p>3\u3001\u4f5c\u7528: \u963b\u6b62\u6076\u610f\u7684\u5168\u8868\u66f4\u65b0\u5220\u9664<\/p>\n<h3>2\u3001\u5b9e\u73b0<\/h3>\n<h4>1\u3001\u6b65\u9aa4<\/h4>\n<p>1\u3001\u4e5f\u662f\u5728\u542f\u52a8\u7c7b\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u62e6\u622a\u5668<\/p>\n<p>2\u3001\u7136\u540e\u6b63\u5e38\u7f16\u5199\u4ee3\u7801\uff0c\u5982\u679c\u5220\u9664\u6216\u4fee\u6539\u5168\u8868\u5c31\u4f1a\u62a5\u9519<\/p>\n<h4>2\u3001\u5b9e\u4f8b<\/h4>\n<p>1\u3001\u5728\u542f\u52a8\u5668\u6dfb\u52a0\u5168\u8868\u66f4\u65b0\u548c\u5220\u9664\u62e6\u622a\u5668<\/p>\n<pre><code class=\"language-java\">@Bean\npublic MybatisPlusInterceptor mybatisPlusInterceptor() {\n  MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();\n  interceptor.addInnerInterceptor(new BlockAttackInnerInterceptor());\n  return interceptor;\n}\n}<\/code><\/pre>\n<p>2\u3001\u6d4b\u8bd5\u5168\u90e8\u66f4\u65b0\u6216\u8005\u5220\u9664<\/p>\n<pre><code class=\"language-java\">@Test\npublic void testQuick8(){\n    User user = new User();\n    user.setName(&quot;custom_name&quot;);\n    user.setEmail(&quot;xxx@mail.com&quot;);\n    \/\/Caused by: com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: Prohibition of table update operation\n    \/\/\u5168\u5c40\u66f4\u65b0,\u62a5\u9519\n    userService.saveOrUpdate(user,null);\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4e09\u3001MybatisPlus\u9ad8\u7ea7\u6269\u5c55 1\u3001\u903b\u8f91\u5220\u9664 1\u3001\u6982\u5ff5 1\u3001\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9e\u73b0\u5bf9\u6570\u636e\u5e93\u8bb0\u5f55\u7684\u903b\u8f91\u5220\u9664\u800c\u4e0d\u662f\u7269\u7406 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-5818","post","type-post","status-publish","format-standard","hentry","category-mybatisplus"],"_links":{"self":[{"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/posts\/5818","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/comments?post=5818"}],"version-history":[{"count":1,"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/posts\/5818\/revisions"}],"predecessor-version":[{"id":5819,"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/posts\/5818\/revisions\/5819"}],"wp:attachment":[{"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/media?parent=5818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/categories?post=5818"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zyg.luchers.cn\/index.php\/wp-json\/wp\/v2\/tags?post=5818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}