{"id":200383,"date":"2025-05-06T12:56:28","date_gmt":"2025-05-06T04:56:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200383\/"},"modified":"2025-05-06T12:56:28","modified_gmt":"2025-05-06T04:56:28","slug":"jpa-%e6%8f%92%e5%85%a5%e6%93%8d%e4%bd%9c%e4%b8%ad%e5%87%ba%e7%8e%b0-column-cannot-be-null-%e9%94%99%e8%af%af%ef%bc%9a%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200383\/","title":{"rendered":"JPA \u63d2\u5165\u64cd\u4f5c\u4e2d\u51fa\u73b0 Column cannot be null \u9519\u8bef\uff1a\u5982\u4f55\u89e3\u51b3\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

JPA \u63d2\u5165\u64cd\u4f5c\u4e2d\u51fa\u73b0 Column cannot be null \u9519\u8bef\uff1a\u5982\u4f55\u89e3\u51b3\uff1f<\/h1>\n

\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762\u4e3b\u673a\u5b9d\u8d1d\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300aJPA \u63d2\u5165\u64cd\u4f5c\u4e2d\u51fa\u73b0 Column cannot be null \u9519\u8bef\uff1a\u5982\u4f55\u89e3\u51b3\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n

<\/p>\n

jpa \u63d2\u5165\u64cd\u4f5c\u4e2d\u51fa\u73b0 column cannot be null \u9519\u8bef\u7684\u89e3\u6790<\/strong><\/p>\n

\u5728 jpa \u4e2d\uff0c\u5982\u679c\u6570\u636e\u5e93\u8868\u4e2d\u67d0\u4e2a\u5b57\u6bb5\u8bbe\u7f6e\u4e86\u9ed8\u8ba4\u503c\uff0c\u6211\u4eec\u901a\u5e38\u8ba4\u4e3a\u4fdd\u5b58\u5b9e\u4f53\u65f6\u5373\u4f7f\u4e0d\u663e\u5f0f\u6307\u5b9a\u8be5\u5b57\u6bb5\u503c\uff0c\u4e5f\u4f1a\u81ea\u52a8\u586b\u5145\u9ed8\u8ba4\u503c\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u51fa\u73b0 column cannot be null \u9519\u8bef\u3002<\/p>\n

\u539f\u56e0\u5728\u4e8e\uff0cjpa \u9ed8\u8ba4\u4f7f\u7528\u5168\u91cf\u64cd\u4f5c\u6a21\u5f0f\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5373\u4f7f\u5b57\u6bb5\u5177\u6709\u9ed8\u8ba4\u503c\uff0c\u5728\u4fdd\u5b58\u5b9e\u4f53\u65f6\u4e5f\u4f1a\u5411\u6570\u636e\u5e93\u63d2\u5165 null \u503c\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c<\/p>\n

    \n
  1. \n

    \u4f7f\u7528 dynamicinsert \u6ce8\u89e3\uff1a<\/strong><\/p>\n

    \u53ef\u4ee5\u901a\u8fc7\u5728\u5b9e\u4f53\u7c7b\u4e0a\u6dfb\u52a0 @dynamicinsert \u6ce8\u89e3\uff0c\u5c06 jpa \u7684\u63d2\u5165\u6a21\u5f0f\u8bbe\u7f6e\u4e3a\u52a8\u6001\u63d2\u5165\u3002\u8be5\u6a21\u5f0f\u4e0b\uff0c\u4ec5\u63d2\u5165\u6307\u5b9a\u503c\u6216\u975e null \u7684\u5b57\u6bb5\uff0c\u5176\u4ed6\u5b57\u6bb5\u5c06\u4f7f\u7528\u6570\u636e\u5e93\u9ed8\u8ba4\u503c\u3002<\/p>\n<\/li>\n

  2. \n

    \u663e\u5f0f\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff1a<\/strong><\/p>\n

    \u4e5f\u53ef\u4ee5\u5728\u5b9e\u4f53\u7c7b\u7684\u5b57\u6bb5\u4e0a\u4f7f\u7528 @defaultvalue \u6ce8\u89e3\uff0c\u663e\u5f0f\u6307\u5b9a\u9ed8\u8ba4\u503c\u3002\u8fd9\u6837\uff0cjpa \u4f1a\u5728\u4fdd\u5b58\u5b9e\u4f53\u65f6\u5411\u6570\u636e\u5e93\u63d2\u5165\u6307\u5b9a\u7684\u9ed8\u8ba4\u503c\uff0c\u800c\u4e0d\u662f null\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u4f8b\u5982\uff1a<\/p>\n

    @Entity\npublic class XXX {\n\n    @Column(name = \"`aaa`\")\n    @DefaultValue(\"\")\n    private String aaa;\n}<\/pre>\n
    \u901a\u8fc7\u4e0a\u8ff0\u65b9\u5f0f\uff0c\u5f53\u4fdd\u5b58 xxx \u5b9e\u4f53\u65f6\uff0c\u5982\u679c aaa \u5b57\u6bb5\u672a\u6307\u5b9a\u503c\uff0c\u6570\u636e\u5e93\u5c06\u81ea\u52a8\u586b\u5145\u9ed8\u8ba4\u7a7a\u5b57\u7b26\u4e32\uff0c\u4ece\u800c\u907f\u514d column cannot be null \u9519\u8bef\u3002<\/p>\n
    \u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aJPA \u63d2\u5165\u64cd\u4f5c\u4e2d\u51fa\u73b0 Column cannot be null \u9519\u8bef\uff1a\u5982\u4f55\u89e3\u51b3\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u5427\uff01<\/p>\n
    \n
    \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    JPA \u63d2\u5165\u64cd\u4f5c\u4e2d\u51fa\u73b0 Colu...<\/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-200383","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200383","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=200383"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200383\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}