{"id":35224,"date":"2024-11-26T17:13:54","date_gmt":"2024-11-26T09:13:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/35224\/"},"modified":"2024-11-26T17:13:54","modified_gmt":"2024-11-26T09:13:54","slug":"java-jdbc-%e5%a6%82%e4%bd%95%e5%b0%86%e6%9f%a5%e8%af%a2%e7%bb%93%e6%9e%9c%e9%9b%86%e8%bf%94%e5%9b%9e%e4%b8%ba-hashmap%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/35224\/","title":{"rendered":"Java JDBC \u5982\u4f55\u5c06\u67e5\u8be2\u7ed3\u679c\u96c6\u8fd4\u56de\u4e3a HashMap\uff1f"},"content":{"rendered":"

\"Java<\/p>\n

Java JDBC \u5982\u4f55\u8fd4\u56de HashMap\uff1f<\/strong><\/p>\n

\u5982\u9898\u6240\u8ff0\uff0cPython \u4e2d\u4f7f\u7528 cursorclass=py.cursors.DictCursor \u5373\u53ef\u83b7\u5f97\u4ee5 Dict \u7c7b\u578b\u8fd4\u56de\u7684\u67e5\u8be2\u7ed3\u679c\u96c6\u3002\u90a3\u4e48\uff0cJava JDBC \u662f\u5426\u6709\u7c7b\u4f3c\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u67d0\u4e2a\u53c2\u6570\u6765\u8fd4\u56de HashMap\uff1f<\/p>\n

\u7b54\u6848\uff1a<\/strong><\/p>\n

\u9057\u61be\u7684\u662f\uff0cJDBC \u8fd4\u56de\u7684\u6570\u636e\u7ed3\u6784\u662f ResultSetRow\uff0c\u65e0\u6cd5\u901a\u8fc7\u76f4\u63a5\u8bbe\u7f6e\u53c2\u6570\u6765\u8fd4\u56de HashMap\u3002\u7136\u800c\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u91c7\u53d6\u5982\u4e0b\u53d8\u901a\u65b9\u6cd5\uff1a<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

    \n
  1. \n

    \u901a\u8fc7\u4ee3\u7406\u8f6c\u6362\u7ed3\u679c\u96c6\uff1a<\/strong><\/p>\n

    \u53ef\u4ee5\u901a\u8fc7\u4ee3\u7406\u6a21\u5f0f\u5c06 ResultSetRow \u5c01\u88c5\u6210\u81ea\u5b9a\u4e49\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5982 HashMap\u3002\u5177\u4f53\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n

      \n
    • \u5b9a\u4e49\u4e00\u4e2a\u4ee3\u7406\u63a5\u53e3\uff0c\u58f0\u660e HashMap \u8fd4\u56de\u65b9\u6cd5\u3002<\/li>\n
    • \u521b\u5efa\u4e00\u4e2a\u5b9e\u73b0\u4ee3\u7406\u63a5\u53e3\u7684\u7c7b\uff0c\u5c06 ResultSetRow \u6620\u5c04\u5230 HashMap\u3002<\/li>\n
    • \u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u4ee3\u7406\u7c7b\u4ee3\u66ff\u539f\u59cb\u7684 JDBC \u7ed3\u679c\u96c6\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \n

      \u4f7f\u7528 JDBC RowSet\uff1a<\/strong><\/p>\n

      JDBC RowSet \u63d0\u4f9b\u4e86\u4e00\u4e2a\u66f4\u7075\u6d3b\u7684\u65b9\u5f0f\u6765\u64cd\u7eb5\u7ed3\u679c\u96c6\u3002\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u5c06\u7ed3\u679c\u96c6\u8f6c\u6362\u4e3a\u591a\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5305\u62ec HashMap\u3002\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n

        \n
      • \u521b\u5efa\u4e00\u4e2a JdbcRowSetImpl \u5b9e\u4f8b\u3002<\/li>\n
      • \u4f7f\u7528 executeQuery \u65b9\u6cd5\u6267\u884c\u67e5\u8be2\uff0c\u83b7\u53d6 ResultSet\u3002<\/li>\n
      • \u4f7f\u7528 ResultSet \u5c06\u6570\u636e\u52a0\u8f7d\u5230 JdbcRowSetImpl \u4e2d\u3002<\/li>\n
      • \u4f7f\u7528 JdbcRowSetImpl \u7684 toHashMap \u65b9\u6cd5\u5c06\u7ed3\u679c\u96c6\u8f6c\u6362\u4e3a HashMap\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

        \u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06 JDBC \u7ed3\u679c\u96c6\u8f6c\u6362\u4e3a HashMap\u3002<\/p>\n

        \u4ee5\u4e0a\u5c31\u662fJava JDBC \u5982\u4f55\u5c06\u67e5\u8be2\u7ed3\u679c\u96c6\u8fd4\u56de\u4e3a HashMap\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

        Java JDBC \u5982\u4f55\u8fd4\u56de HashMap\uff1f \u5982\u9898\u6240\u8ff0\uff0cPython \u4e2d\u4f7f\u7528 cursorclass=py.cursors.DictCursor \u5373\u53ef\u83b7\u5f97\u4ee5 Dict \u7c7b\u578b\u8fd4\u56de\u7684\u67e5\u8be2\u7ed3\u679c\u96c6\u3002\u90a3\u4e48\uff0cJava JDBC \u662f\u5426\u6709\u7c7b\u4f3c\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u67d0\u4e2a\u53c2\u6570\u6765\u8fd4\u56de HashMap\uff1f \u7b54\u6848\uff1a \u9057\u61be\u7684\u662f\uff0cJDBC \u8fd4\u56de\u7684\u6570\u636e\u7ed3\u6784\u662f ResultSetRow\uff0c\u65e0\u6cd5\u901a\u8fc7\u76f4\u63a5\u8bbe\u7f6e\u53c2\u6570\u6765\u8fd4\u56de HashMap\u3002\u7136\u800c\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u91c7\u53d6\u5982\u4e0b\u53d8\u901a\u65b9\u6cd5\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u901a\u8fc7\u4ee3\u7406\u8f6c\u6362\u7ed3\u679c\u96c6\uff1a \u53ef\u4ee5\u901a\u8fc7\u4ee3\u7406\u6a21\u5f0f\u5c06 ResultSetRow \u5c01\u88c5\u6210\u81ea\u5b9a\u4e49\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5982 HashMap\u3002\u5177\u4f53\u6d41\u7a0b\u5982\u4e0b\uff1a \u5b9a\u4e49\u4e00\u4e2a\u4ee3\u7406\u63a5\u53e3\uff0c\u58f0\u660e HashMap \u8fd4\u56de\u65b9\u6cd5\u3002 \u521b\u5efa\u4e00\u4e2a\u5b9e\u73b0\u4ee3\u7406\u63a5\u53e3\u7684\u7c7b\uff0c\u5c06 ResultSetRow \u6620\u5c04\u5230 HashMap\u3002 \u5728\u4ee3\u7801\u4e2d\u4f7f\u7528\u4ee3\u7406\u7c7b\u4ee3\u66ff\u539f\u59cb\u7684 JDBC \u7ed3\u679c\u96c6\u3002 \u4f7f\u7528 JDBC RowSet\uff1a JDBC RowSet \u63d0\u4f9b\u4e86\u4e00\u4e2a\u66f4\u7075\u6d3b\u7684\u65b9\u5f0f\u6765\u64cd\u7eb5\u7ed3\u679c\u96c6\u3002\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u5c06\u7ed3\u679c\u96c6\u8f6c\u6362\u4e3a\u591a\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5305\u62ec HashMap\u3002\u5177\u4f53\u6b65\u9aa4\u5982\u4e0b\uff1a \u521b\u5efa\u4e00\u4e2a JdbcRowSetImpl \u5b9e\u4f8b\u3002 \u4f7f\u7528 executeQuery \u65b9\u6cd5\u6267\u884c\u67e5\u8be2\uff0c\u83b7\u53d6 ResultSet\u3002 \u4f7f\u7528 ResultSet \u5c06\u6570\u636e\u52a0\u8f7d\u5230 JdbcRowSetImpl \u4e2d\u3002 \u4f7f\u7528 JdbcRowSetImpl […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-35224","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35224","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=35224"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35224\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=35224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=35224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=35224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}