{"id":32,"date":"2014-06-30T15:39:18","date_gmt":"2014-06-30T07:39:18","guid":{"rendered":"http:\/\/www.espandy.com\/?p=32"},"modified":"2014-07-01T09:43:07","modified_gmt":"2014-07-01T01:43:07","slug":"32","status":"publish","type":"post","link":"https:\/\/www.espandy.com\/?p=32","title":{"rendered":"execute\u76f8\u5173\u7684\u4e00\u4e9b\u5e38\u8bc6"},"content":{"rendered":"

execute\u3001executeUpdate\u3001executeQuery\u4e09\u8005\u7684\u533a\u522b\uff08\u53ca\u8fd4\u56de\u503c\uff09<\/h4>\n
\n
    \n
  1. ResultSet executeQuery(String sql); \u6267\u884cSQL\u67e5\u8be2\uff0c\u5e76\u8fd4\u56deResultSet \u5bf9\u8c61\u3002<\/li>\n
  2. int executeUpdate(String sql); \u53ef\u6267\u884c\u589e\uff0c\u5220\uff0c\u6539\uff0c\u8fd4\u56de\u6267\u884c\u53d7\u5230\u5f71\u54cd\u7684\u884c\u6570\u3002<\/li>\n
  3. boolean execute(String sql); \u53ef\u6267\u884c\u4efb\u4f55SQL\u8bed\u53e5\uff0c\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u8868\u793a\u662f\u5426\u8fd4\u56deResultSet \u3002<\/li>\n
  4. execute\u662fexecuteQuery\u548cexecuteUpdate\u7684\u7efc\u5408.<\/li>\n<\/ol>\n
    \n
    \u5177\u4f53\u4f7f\u7528\u65b9\u6cd5\uff0c\u5927\u6982\u5982\u4e0b\u6240\u8ff0<\/h5>\n
    \n

    executeUpdate() \u8fd9\u662f PreparedStatement \u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5<\/p>\n

    executeUpdate(String sql) \u8fd9\u662f PreparedStatement \u4ece\u7236\u63a5\u53e3 Statement \u4e2d\u7ee7\u627f\u8fc7\u6765\u7684\u65b9\u6cd5<\/p>\n

    executeUpdate() \u4e2d\u6267\u884c SQL \u8bed\u53e5\u9700\u8981\u5728\u521b\u5efa PerparedStatement \u65f6\u901a\u8fc7 Connection \u7684 prepareStatement(String sql) \u65b9\u6cd5\u4e2d\u5199\u51fa\uff0c\u56e0\u4e3a PerparedStatement \u4e2d\u7684 SQL \u8bed\u53e5\u6570\u636e\u5e93\u9700\u8981\u8fdb\u884c\u9884\u7f16\u8bd1\u548c\u7f13\u5b58\uff0c\u56e0\u6b64\u8981\u5728\u521b\u5efa PerparedStatement \u5bf9\u8c61\u65f6\u7ed9\u51fa SQL \u8bed\u53e5\u3002<\/p>\n

    \u800c executeUpdate(String sql) \u662f Statement \u4e2d\u7684\u65b9\u6cd5\uff0c\u53c2\u6570\u4e2d\u7684 SQL \u8bed\u53e5\u53ea\u662f\u63d0\u4ea4\u7ed9\u6570\u636e\u5e93\u53bb\u6267\u884c\uff0c\u5e76\u4e0d\u9700\u8981\u9884\u7f16\u8bd1\u3002<\/p>\n

    \u5982\u679c SQL \u8bed\u53e5\u4e2d\u6709 ? \u5360\u4f4d\u7b26\uff0c\u90a3\u4e48\u5728\u8bbe\u7f6e\u597d\u5360\u4f4d\u7b26\u4e2d\u7684\u503c\u540e\uff0c\u5fc5\u987b\u4f7f\u7528 executeUpdate() \u6267\u884c\u3002\u800c executeUpdate(String sql) \u53ea\u662f\u63d0\u4ea4\u4e00\u4e2a SQL \u8bed\u53e5\uff0c\u4e14\u8fd9\u4e2a\u8bed\u53e5\u4e2d\u4e0d\u80fd\u5e26\u6709 ? \u5360\u4f4d\u7b26<\/p>\n

    executeUpdate(sql)\u7684\u8fd4\u56de\u503c\u662f\u66f4\u65b0\u7684\u6761\u6570<\/p>\n

    \n","protected":false},"excerpt":{"rendered":"

    execute\u3001executeUpdate\u3001executeQuery\u4e09\u8005\u7684\u533a\u522b\uff08\u53ca\u8fd4\u56de\u503c\uff09 ResultSet […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3],"tags":[],"class_list":["post-32","post","type-post","status-publish","format-aside","hentry","category-tech","post_format-post-format-aside"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.espandy.com\/index.php?rest_route=\/wp\/v2\/posts\/32","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.espandy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.espandy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.espandy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.espandy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=32"}],"version-history":[{"count":8,"href":"https:\/\/www.espandy.com\/index.php?rest_route=\/wp\/v2\/posts\/32\/revisions"}],"predecessor-version":[{"id":41,"href":"https:\/\/www.espandy.com\/index.php?rest_route=\/wp\/v2\/posts\/32\/revisions\/41"}],"wp:attachment":[{"href":"https:\/\/www.espandy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=32"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.espandy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=32"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.espandy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}