{"id":61561,"date":"2024-10-13T12:01:15","date_gmt":"2024-10-13T04:01:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61561\/"},"modified":"2024-10-13T12:01:15","modified_gmt":"2024-10-13T04:01:15","slug":"hibernate%e4%b8%admysql%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e6%98%a0%e5%b0%84%e6%8f%8f%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61561\/","title":{"rendered":"hibernate\u4e2dMySQL\u81ea\u589e\u5b57\u6bb5\u7684\u6620\u5c04\u63cf\u8ff0"},"content":{"rendered":"<h1 id=\"hibernate%e4%b8%admysql%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e6%98%a0%e5%b0%84%e6%8f%8f%e8%bf%b0-QpvAtcKtoc\">Hibernate\u4e2dMySQL\u81ea\u589e\u5b57\u6bb5\u7684\u6620\u5c04\u63cf\u8ff0<\/h1>\n<p>\u5728\u4f7f\u7528Hibernate\u9032\u884cJava\u61c9\u7528\u958b\u767c\u6642\uff0c\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u6620\u5c04\u662f\u4e00\u500b\u91cd\u8981\u7684\u74b0\u7bc0\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528MySQL\u4f5c\u70ba\u6578\u64da\u5eab\u6642\uff0c\u81ea\u589e\u5b57\u6bb5\u7684\u6620\u5c04\u66f4\u662f\u958b\u767c\u8005\u9700\u8981\u95dc\u6ce8\u7684\u91cd\u9ede\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eHibernate\u4e2dMySQL\u81ea\u589e\u5b57\u6bb5\u7684\u6620\u5c04\u63cf\u8ff0\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u61c9\u7528\u9019\u4e00\u7279\u6027\u3002<\/p>\n<h2 id=\"%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e6%a6%82%e5%bf%b5-QpvAtcKtoc\">\u81ea\u589e\u5b57\u6bb5\u7684\u6982\u5ff5<\/h2>\n<p>\u81ea\u589e\u5b57\u6bb5\u662f\u6307\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u7576\u63d2\u5165\u65b0\u8a18\u9304\u6642\uff0c\u8a72\u5b57\u6bb5\u7684\u503c\u6703\u81ea\u52d5\u589e\u52a0\u3002\u9019\u901a\u5e38\u7528\u65bc\u4e3b\u9375\uff0c\u4ee5\u78ba\u4fdd\u6bcf\u689d\u8a18\u9304\u7684\u552f\u4e00\u6027\u3002\u5728MySQL\u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u5728\u5275\u5efa\u8868\u6642\u4f7f\u7528AUTO_INCREMENT\u5c6c\u6027\u4f86\u8a2d\u7f6e\u81ea\u589e\u5b57\u6bb5\u3002<\/p>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    username VARCHAR(50) NOT NULL\n);\n<\/code><\/pre>\n<h2 id=\"hibernate%e4%b8%ad%e7%9a%84%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e6%98%a0%e5%b0%84-QpvAtcKtoc\">Hibernate\u4e2d\u7684\u81ea\u589e\u5b57\u6bb5\u6620\u5c04<\/h2>\n<p>\u5728Hibernate\u4e2d\uff0c\u6620\u5c04\u81ea\u589e\u5b57\u6bb5\u9700\u8981\u4f7f\u7528\u7279\u5b9a\u7684\u8a3b\u89e3\u4f86\u544a\u8a34Hibernate\u5982\u4f55\u8655\u7406\u9019\u4e9b\u5b57\u6bb5\u3002\u901a\u5e38\uff0c\u958b\u767c\u8005\u6703\u4f7f\u7528\u4ee5\u4e0b\u8a3b\u89e3\u4f86\u9032\u884c\u6620\u5c04\uff1a<\/p>\n<ul>\n<li><code>@Id<\/code>\uff1a\u6a19\u8a18\u8a72\u5b57\u6bb5\u70ba\u4e3b\u9375\u3002<\/li>\n<li><code>@GeneratedValue<\/code>\uff1a\u6307\u5b9a\u4e3b\u9375\u7684\u751f\u6210\u7b56\u7565\u3002<\/li>\n<\/ul>\n<h3 id=\"%e6%98%a0%e5%b0%84%e7%a4%ba%e4%be%8b-QpvAtcKtoc\">\u6620\u5c04\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Java\u985e\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728Hibernate\u4e2d\u6620\u5c04MySQL\u7684\u81ea\u589e\u5b57\u6bb5\uff1a<\/p>\n<pre><code>import javax.persistence.Entity;\nimport javax.persistence.GeneratedValue;\nimport javax.persistence.GenerationType;\nimport javax.persistence.Id;\n\n@Entity\npublic class User {\n    \n    @Id\n    @GeneratedValue(strategy = GenerationType.IDENTITY)\n    private Long id;\n    \n    private String username;\n\n    \/\/ getters and setters\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c<code>@GeneratedValue(strategy = GenerationType.IDENTITY)<\/code>\u8868\u793a\u4f7f\u7528MySQL\u7684\u81ea\u589e\u7b56\u7565\u3002\u9019\u610f\u5473\u8457\u7576\u63d2\u5165\u65b0\u7528\u6236\u6642\uff0c<code>id<\/code>\u5b57\u6bb5\u7684\u503c\u5c07\u81ea\u52d5\u751f\u6210\uff0c\u7121\u9700\u624b\u52d5\u8a2d\u7f6e\u3002<\/p>\n<h2 id=\"%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e7%94%9f%e6%88%90%e7%ad%96%e7%95%a5-QpvAtcKtoc\">\u81ea\u589e\u5b57\u6bb5\u7684\u751f\u6210\u7b56\u7565<\/h2>\n<p>Hibernate\u652f\u6301\u591a\u7a2e\u4e3b\u9375\u751f\u6210\u7b56\u7565\uff0c\u5c0d\u65bcMySQL\u7684\u81ea\u589e\u5b57\u6bb5\uff0c\u6700\u5e38\u7528\u7684\u7b56\u7565\u662f<code>GenerationType.IDENTITY<\/code>\u3002\u9019\u7a2e\u7b56\u7565\u544a\u8a34Hibernate\u4f7f\u7528\u6578\u64da\u5eab\u81ea\u589e\u529f\u80fd\u4f86\u751f\u6210\u4e3b\u9375\u503c\u3002<\/p>\n<ul>\n<li><code>GenerationType.AUTO<\/code>\uff1a\u6839\u64da\u6578\u64da\u5eab\u81ea\u52d5\u9078\u64c7\u751f\u6210\u7b56\u7565\u3002<\/li>\n<li><code>GenerationType.SEQUENCE<\/code>\uff1a\u4f7f\u7528\u5e8f\u5217\u751f\u6210\u4e3b\u9375\uff0c\u901a\u5e38\u7528\u65bcOracle\u7b49\u6578\u64da\u5eab\u3002<\/li>\n<li><code>GenerationType.TABLE<\/code>\uff1a\u4f7f\u7528\u4e00\u500b\u8868\u4f86\u751f\u6210\u4e3b\u9375\uff0c\u9019\u7a2e\u65b9\u5f0f\u8f03\u5c11\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-QpvAtcKtoc\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u81ea\u589e\u5b57\u6bb5\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u5eab\u8868\u4e2d\u7684\u81ea\u589e\u5b57\u6bb5\u8a2d\u7f6e\u6b63\u78ba\uff0c\u5426\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u63d2\u5165\u5931\u6557\u3002<\/li>\n<li>\u5728\u4f7f\u7528<code>GenerationType.IDENTITY<\/code>\u6642\uff0cHibernate\u7121\u6cd5\u5728\u63d2\u5165\u64cd\u4f5c\u4e4b\u524d\u7372\u53d6\u4e3b\u9375\u503c\uff0c\u56e0\u6b64\u7121\u6cd5\u5728\u540c\u4e00\u4e8b\u52d9\u4e2d\u9032\u884c\u591a\u6b21\u63d2\u5165\u3002<\/li>\n<li>\u5728\u9032\u884c\u6578\u64da\u5eab\u9077\u79fb\u6216\u5347\u7d1a\u6642\uff0c\u9700\u7279\u5225\u6ce8\u610f\u81ea\u589e\u5b57\u6bb5\u7684\u8a2d\u7f6e\uff0c\u4ee5\u907f\u514d\u6578\u64da\u4e1f\u5931\u6216\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-QpvAtcKtoc\">\u7e3d\u7d50<\/h2>\n<p>\u5728Hibernate\u4e2d\u6b63\u78ba\u6620\u5c04MySQL\u7684\u81ea\u589e\u5b57\u6bb5\u662f\u958b\u767c\u8005\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002\u901a\u904e\u4f7f\u7528<code>@Id<\/code>\u548c<code>@GeneratedValue<\/code>\u8a3b\u89e3\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u81ea\u589e\u5b57\u6bb5\u6620\u5c04\u5230Java\u5c0d\u8c61\u4e2d\u3002\u4e86\u89e3\u4e0d\u540c\u7684\u751f\u6210\u7b56\u7565\u53ca\u5176\u9069\u7528\u5834\u666f\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u5be6\u969b\u958b\u767c\u4e2d\u505a\u51fa\u66f4\u597d\u7684\u9078\u64c7\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Hibernate\u4e2dMySQL\u81ea\u589e\u5b57\u6bb5\u7684\u6620\u5c04\uff0c\u638c\u63e1\u5982\u4f55\u5728\u5b9e\u4f53\u7c7b\u4e2d\u6b63\u786e\u914d\u7f6e\u81ea\u589e\u4e3b\u952e\u4ee5\u5b9e\u73b0\u6570\u636e\u81ea\u52a8\u589e\u957f\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61561","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61561","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61561"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61561\/revisions"}],"predecessor-version":[{"id":61562,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61561\/revisions\/61562"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}