{"id":11556,"date":"2023-11-28T22:24:27","date_gmt":"2023-11-28T14:24:27","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11556"},"modified":"2023-12-11T11:16:49","modified_gmt":"2023-12-11T03:16:49","slug":"spring-zhong-ru-he-shi-yongjpa-zai-shu-ju-ku-zhong","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/spring-zhong-ru-he-shi-yongjpa-zai-shu-ju-ku-zhong\/","title":{"rendered":"Spring\u4e2d\u5982\u4f55\u4f7f\u7528JPA\u5728\u6570\u636e\u5e93\u4e2d\u975e\u6301\u4e45\u5316\u4e00\u4e2a\u5b57\u6bb5?"},"content":{"rendered":"<p>\u5728Spring\u4e2d\u4f7f\u7528JPA\uff08Java Persistence API\uff09\u65f6\uff0c\u5982\u679c\u4f60\u5e0c\u671b\u5728\u6570\u636e\u5e93\u4e2d\u4e0d\u6301\u4e45\u5316\uff08\u4e0d\u4fdd\u5b58\uff09\u67d0\u4e2a\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528<code>@Transient<\/code>\u6ce8\u89e3\u3002<code>@Transient<\/code>\u6ce8\u89e3\u7528\u4e8e\u6807\u8bb0\u4e00\u4e2a\u5b57\u6bb5\uff0c\u544a\u8bc9JPA\u4e0d\u5e94\u8be5\u5c06\u5176\u6301\u4e45\u5316\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-java\">import javax.persistence.Entity;\nimport javax.persistence.Id;\nimport javax.persistence.Transient;\n\n@Entity\npublic class MyEntity {\n\n    @Id\n    private Long id;\n\n    private String persistentField;\n\n    @Transient\n    private String transientField;\n\n    \/\/ Constructors, getters, setters, etc.\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c<code>transientField<\/code>\u5b57\u6bb5\u88ab\u6807\u8bb0\u4e3a<code>@Transient<\/code>\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4e0d\u4f1a\u88abJPA\u6301\u4e45\u5316\u5230\u6570\u636e\u5e93\u4e2d\u3002\u53ea\u6709<code>persistentField<\/code>\u5b57\u6bb5\u4f1a\u88ab\u4fdd\u5b58\u5230\u6570\u636e\u5e93\uff0c\u800c<code>transientField<\/code>\u5b57\u6bb5\u5728\u6301\u4e45\u5316\u8fc7\u7a0b\u4e2d\u4f1a\u88ab\u5ffd\u7565\u3002<\/p>\n<p>\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528<code>@Transient<\/code>\u6ce8\u89e3\u7684\u5b57\u6bb5\u4e0d\u4f1a\u88ab\u5b58\u50a8\u5728\u6570\u636e\u5e93\u8868\u4e2d\uff0c\u4f46\u5728Java\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u5185\u4ecd\u7136\u53ef\u7528\u3002<\/li>\n<li><code>@Transient<\/code>\u6ce8\u89e3\u53ef\u4ee5\u7528\u4e8e\u5b57\u6bb5\u3001\u65b9\u6cd5\u548c\u5c5e\u6027\u7684 getter \u6216 setter \u65b9\u6cd5\u4e0a\u3002<\/li>\n<li>\u5982\u679c\u4f60\u5728\u7ee7\u627f\u5173\u7cfb\u4e2d\u4f7f\u7528<code>@Transient<\/code>\uff0c\u9700\u8981\u5c0f\u5fc3\uff0c\u56e0\u4e3a\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5b50\u7c7b\u4e2d\u7684<code>@Transient<\/code>\u5b57\u6bb5\u53ef\u80fd\u4f1a\u88ab\u6301\u4e45\u5316\u5230\u6570\u636e\u5e93\u4e2d\u3002\u8fd9\u65f6\u53ef\u4ee5\u8003\u8651\u4f7f\u7528<code>@MappedSuperclass<\/code>\u6ce8\u89e3\u6765\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Spring\u4e2d\u4f7f\u7528JPA\uff08Java Persistence API\uff09\u65f6\uff0c\u5982\u679c\u4f60\u5e0c\u671b\u5728\u6570\u636e\u5e93\u4e2d\u4e0d\u6301\u4e45\u5316\uff08\u4e0d\u4fdd\u5b58 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[],"class_list":["post-11556","post","type-post","status-publish","format-standard","hentry","category-spring"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11556","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=11556"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11556\/revisions"}],"predecessor-version":[{"id":17073,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11556\/revisions\/17073"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11556"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}