DriverManager \u7c7b\u662f JDBC \u7684\u7ba1\u7406\u5c42\uff0c\u4f5c\u7528\u4e8e\u7528\u6237\u548c\u9a71\u52a8\u7a0b\u5e8f\u4e4b\u95f4\u3002\u5b83\u8ddf\u8e2a\u53ef\u7528\u7684\u9a71\u52a8\u7a0b\u5e8f\uff0c\u5e76\u5728\u6570\u636e\u5e93\u548c\u76f8\u5e94\u9a71\u52a8\u7a0b\u5e8f\u4e4b\u95f4\u5efa\u7acb\u8fde\u63a5\u3002\u53e6\u5916\uff0cDriverManager \u7c7b\u4e5f\u5904\u7406\u8bf8\u5982\u9a71\u52a8\u7a0b\u5e8f\u767b\u5f55\u65f6\u95f4\u9650\u5236\u53ca\u767b\u5f55\u548c\u8ddf\u8e2a\u6d88\u606f\u7684\u663e\u793a\u7b49\u4e8b\u52a1\u3002 <\/p>\n
\u5bf9\u4e8e\u7b80\u5355\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e00\u822c\u7a0b\u5e8f\u5458\u9700\u8981\u5728\u6b64\u7c7b\u4e2d\u76f4\u63a5\u4f7f\u7528\u7684\u552f\u4e00\u65b9\u6cd5\u662fDriverManager.getConnection\u3002\u6b63\u5982\u540d\u79f0\u6240\u793a\uff0c\u8be5\u65b9\u6cd5\u5c06\u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u3002JDBC \u5141\u8bb8\u7528\u6237\u8c03\u7528 DriverManager \u7684\u65b9\u6cd5 getDriver\u3001getDrivers \u548c registerDriver \u53ca Driver \u7684\u65b9\u6cd5 connect\u3002\u4f46\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u8ba9 DriverManager \u7c7b\u7ba1\u7406\u5efa\u7acb\u8fde\u63a5\u7684\u7ec6\u8282\u4e3a\u4e0a\u7b56\u3002 <\/p>\n
1\u3001\u8ddf\u8e2a\u53ef\u7528\u9a71\u52a8\u7a0b\u5e8f <\/p>\n
DriverManager \u7c7b\u5305\u542b\u4e00\u5217 Driver \u7c7b\uff0c\u5b83\u4eec\u5df2\u901a\u8fc7\u8c03\u7528\u65b9\u6cd5 DriverManager.registerDriver \u5bf9\u81ea\u5df1\u8fdb\u884c\u4e86\u6ce8\u518c\u3002\u6240\u6709 Driver \u7c7b\u90fd\u5fc5\u987b\u5305\u542b\u6709\u4e00\u4e2a\u9759\u6001\u90e8\u5206\u3002\u5b83\u521b\u5efa\u8be5\u7c7b\u7684\u5b9e\u4f8b\uff0c\u7136\u540e\u5728\u52a0\u8f7d\u8be5\u5b9e\u4f8b\u65f6 DriverManager \u7c7b\u8fdb\u884c\u6ce8\u518c\u3002\u8fd9\u6837\uff0c\u7528\u6237\u6b63\u5e38\u60c5\u51b5\u4e0b\u5c06\u4e0d\u4f1a\u76f4\u63a5\u8c03\u7528 DriverManager.registerDriver\uff1b\u800c\u662f\u5728\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u65f6\u7531\u9a71\u52a8\u7a0b\u5e8f\u81ea\u52a8\u8c03\u7528\u3002\u52a0\u8f7d Driver \u7c7b\uff0c\u7136\u540e\u81ea\u52a8\u5728 DriverManager \u4e2d\u6ce8\u518c\u7684\u65b9\u5f0f\u6709\u4e24\u79cd\uff1a <\/p>\n
\u901a\u8fc7\u8c03\u7528\u65b9\u6cd5 Class.forName\u3002\u8fd9\u5c06\u663e\u5f0f\u5730\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u7c7b\u3002\u7531\u4e8e\u8fd9\u4e0e\u5916\u90e8\u8bbe\u7f6e\u65e0\u5173\uff0c\u56e0\u6b64\u63a8\u8350\u4f7f\u7528\u8fd9\u79cd\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u7684\u65b9\u6cd5\u3002\u4ee5\u4e0b\u4ee3\u7801\u52a0\u8f7d\u7c7b acme.db.Driver\uff1a <\/p>\n
Class.forName(“acme.db.Driver”); <\/p>\n
\u5982\u679c\u5c06 acme.db.Driver \u7f16\u5199\u4e3a\u52a0\u8f7d\u65f6\u521b\u5efa\u5b9e\u4f8b\uff0c\u5e76\u8c03\u7528\u4ee5\u8be5\u5b9e\u4f8b\u4e3a\u53c2\u6570\u7684 DriverManager.registerDriver(\u672c\u8be5\u5982\u6b64)\uff0c\u5219\u5b83\u5728 DriverManager \u7684\u9a71\u52a8\u7a0b\u5e8f\u5217\u8868\u4e2d\uff0c\u5e76\u53ef\u7528\u4e8e\u521b\u5efa\u8fde\u63a5\u3002 <\/p>\n
\u901a\u8fc7\u5c06\u9a71\u52a8\u7a0b\u5e8f\u6dfb\u52a0\u5230 java.lang.System \u7684\u5c5e\u6027 jdbc.drivers \u4e2d\u3002\u8fd9\u662f\u4e00\u4e2a\u7531 DriverManager \u7c7b\u52a0\u8f7d\u7684\u9a71\u52a8\u7a0b\u5e8f\u7c7b\u540d\u7684\u5217\u8868\uff0c\u7531\u5192\u53f7\u5206\u9694\uff1a\u521d\u59cb\u5316 DriverManager \u7c7b\u65f6\uff0c\u5b83\u641c\u7d22\u7cfb\u7edf\u5c5e\u6027 jdbc.drivers\uff0c\u5982\u679c\u7528\u6237\u5df2\u8f93\u5165\u4e86\u4e00\u4e2a\u6216\u591a\u4e2a\u9a71\u52a8\u7a0b\u5e8f\uff0c\u5219 DriverManager \u7c7b\u5c06\u8bd5\u56fe\u52a0\u8f7d\u5b83\u4eec\u3002\u4ee5\u4e0b\u4ee3\u7801\u8bf4\u660e\u7a0b\u5e8f\u5458\u5982\u4f55\u5728 ~\/.hotjava\/properties \u4e2d\u8f93\u5165\u4e09\u4e2a\u9a71\u52a8\u7a0b\u5e8f\u7c7b(\u542f\u52a8\u65f6\uff0cHotJava \u5c06\u628a\u5b83\u52a0\u8f7d\u5230\u7cfb\u7edf\u5c5e\u6027\u5217\u8868\u4e2d)\uff1a <\/p>\n
jdbc.drivers=foo.bah.Driver:wombat.sql.Driver:bad.test.ourDriver; <\/p>\n
\u5bf9 DriverManager \u65b9\u6cd5\u7684\u7b2c\u4e00\u6b21\u8c03\u7528\u5c06\u81ea\u52a8\u52a0\u8f7d\u8fd9\u4e9b\u9a71\u52a8\u7a0b\u5e8f\u7c7b\u3002 <\/p>\n
\u6ce8\u610f\uff1a\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u7684\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u9700\u8981\u6301\u4e45\u7684\u9884\u8bbe\u73af\u5883\u3002\u5982\u679c\u5bf9\u8fd9\u4e00\u70b9\u4e0d\u80fd\u4fdd\u8bc1\uff0c\u5219\u8c03\u7528\u65b9\u6cd5 Class.forName \u663e\u5f0f\u5730\u52a0\u8f7d\u6bcf\u4e2a\u9a71\u52a8\u7a0b\u5e8f\u5c31\u663e\u5f97\u66f4\u4e3a\u5b89\u5168\u3002\u8fd9\u4e5f\u662f\u5f15\u5165\u7279\u5b9a\u9a71\u52a8\u7a0b\u5e8f\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u4e00\u65e6 DriverManager \u7c7b\u88ab\u521d\u59cb\u5316\uff0c\u5b83\u5c06\u4e0d\u518d\u68c0\u67e5 jdbc.drivers \u5c5e\u6027\u5217\u8868\u3002 <\/p>\n
\u5728\u4ee5\u4e0a\u4e24\u79cd\u60c5\u51b5\u4e2d\uff0c\u65b0\u52a0\u8f7d\u7684 Driver \u7c7b\u90fd\u8981\u901a\u8fc7\u8c03\u7528 DriverManager.registerDriver \u7c7b\u8fdb\u884c\u81ea\u6211\u6ce8\u518c\u3002\u5982\u4e0a\u6240\u8ff0\uff0c\u52a0\u8f7d\u7c7b\u65f6\u5c06\u81ea\u52a8\u6267\u884c\u8fd9\u4e00\u8fc7\u7a0b\u3002 <\/p>\n
\u7531\u4e8e\u5b89\u5168\u65b9\u9762\u7684\u539f\u56e0\uff0cJDBC \u7ba1\u7406\u5c42\u5c06\u8ddf\u8e2a\u54ea\u4e2a\u7c7b\u52a0\u8f7d\u5668\u63d0\u4f9b\u54ea\u4e2a\u9a71\u52a8\u7a0b\u5e8f\u3002\u8fd9\u6837\uff0c\u5f53 DriverManager \u7c7b\u6253\u5f00\u8fde\u63a5\u65f6\uff0c\u5b83\u4ec5\u4f7f\u7528\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u6216\u4e0e\u53d1\u51fa\u8fde\u63a5\u8bf7\u6c42\u7684\u4ee3\u7801\u76f8\u540c\u7684\u7c7b\u52a0\u8f7d\u5668\u63d0\u4f9b\u7684\u9a71\u52a8\u7a0b\u5e8f\u3002 <\/p>\n
2\u3001\u5efa\u7acb\u8fde\u63a5 <\/p>\n
\u52a0\u8f7d Driver \u7c7b\u5e76\u5728 DriverManager \u7c7b\u4e2d\u6ce8\u518c\u540e\uff0c\u5b83\u4eec\u5373\u53ef\u7528\u6765\u4e0e\u6570\u636e\u5e93\u5efa\u7acb\u8fde\u63a5\u3002\u5f53\u8c03\u7528 DriverManager.getConnection \u65b9\u6cd5\u53d1\u51fa\u8fde\u63a5\u8bf7\u6c42\u65f6\uff0cDriverManager \u5c06\u68c0\u67e5\u6bcf\u4e2a\u9a71\u52a8\u7a0b\u5e8f\uff0c\u67e5\u770b\u5b83\u662f\u5426\u53ef\u4ee5\u5efa\u7acb\u8fde\u63a5\u3002 <\/p>\n
\u6709\u65f6\u53ef\u80fd\u6709\u591a\u4e2a JDBC \u9a71\u52a8\u7a0b\u5e8f\u53ef\u4ee5\u4e0e\u7ed9\u5b9a\u7684 URL \u8fde\u63a5\u3002\u4f8b\u5982\uff0c\u4e0e\u7ed9\u5b9a\u8fdc\u7a0b\u6570\u636e\u5e93\u8fde\u63a5\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 JDBC-ODBC \u6865\u9a71\u52a8\u7a0b\u5e8f\u3001JDBC \u5230\u901a\u7528\u7f51\u7edc\u534f\u8bae\u9a71\u52a8\u7a0b\u5e8f\u6216\u6570\u636e\u5e93\u5382\u5546\u63d0\u4f9b\u7684\u9a71\u52a8\u7a0b\u5e8f\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6d4b\u8bd5\u9a71\u52a8\u7a0b\u5e8f\u7684\u987a\u5e8f\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a DriverManager \u5c06\u4f7f\u7528\u5b83\u6240\u627e\u5230\u7684\u7b2c\u4e00\u4e2a\u53ef\u4ee5\u6210\u529f\u8fde\u63a5\u5230\u7ed9\u5b9a URL \u7684\u9a71\u52a8\u7a0b\u5e8f\u3002 <\/p>\n
\u9996\u5148 DriverManager \u8bd5\u56fe\u6309\u6ce8\u518c\u7684\u987a\u5e8f\u4f7f\u7528\u6bcf\u4e2a\u9a71\u52a8\u7a0b\u5e8f(jdbc.drivers \u4e2d\u5217\u51fa\u7684\u9a71\u52a8\u7a0b\u5e8f\u603b\u662f\u5148\u6ce8\u518c)\u3002\u5b83\u5c06\u8df3\u8fc7\u4ee3\u7801\u4e0d\u53ef\u4fe1\u4efb\u7684\u9a71\u52a8\u7a0b\u5e8f\uff0c\u9664\u975e\u52a0\u8f7d\u5b83\u4eec\u7684\u6e90\u4e0e\u8bd5\u56fe\u6253\u5f00\u8fde\u63a5\u7684\u4ee3\u7801\u7684\u6e90\u76f8\u540c\u3002 <\/p>\n
\u5b83\u901a\u8fc7\u8f6e\u6d41\u5728\u6bcf\u4e2a\u9a71\u52a8\u7a0b\u5e8f\u4e0a\u8c03\u7528\u65b9\u6cd5 Driver.connect\uff0c\u5e76\u5411\u5b83\u4eec\u4f20\u9012\u7528\u6237\u5f00\u59cb\u4f20\u9012\u7ed9\u65b9\u6cd5 DriverManager.getConnection \u7684 URL \u6765\u5bf9\u9a71\u52a8\u7a0b\u5e8f\u8fdb\u884c\u6d4b\u8bd5\uff0c\u7136\u540e\u8fde\u63a5\u7b2c\u4e00\u4e2a\u8ba4\u51fa\u8be5 URL \u7684\u9a71\u52a8\u7a0b\u5e8f\u3002 <\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u521d\u770b\u8d77\u6765\u6548\u7387\u4e0d\u9ad8\uff0c\u4f46\u7531\u4e8e\u4e0d\u53ef\u80fd\u540c\u65f6\u52a0\u8f7d\u6570\u5341\u4e2a\u9a71\u52a8\u7a0b\u5e8f\uff0c\u56e0\u6b64\u6bcf\u6b21\u8fde\u63a5\u5b9e\u9645\u53ea\u9700\u51e0\u4e2a\u8fc7\u7a0b\u8c03\u7528\u548c\u5b57\u7b26\u4e32\u6bd4\u8f83\u3002 <\/p>\n
\u4ee5\u4e0b\u4ee3\u7801\u662f\u901a\u5e38\u60c5\u51b5\u4e0b\u7528\u9a71\u52a8\u7a0b\u5e8f(\u4f8b\u5982 JDBC-ODBC \u6865\u9a71\u52a8\u7a0b\u5e8f)\u5efa\u7acb\u8fde\u63a5\u6240\u9700\u6240\u6709\u6b65\u9aa4\u7684\u793a\u4f8b\uff1a <\/p>\n
Class.forName(“sun.jdbc.odbc.JdbcOdbcDriver”); \/\/\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f <\/p>\n
String url = “jdbc:odbc:fred”; <\/p>\n
DriverManager.getConnection(url, “userID”, “passwd”); <\/p>\n","protected":false},"excerpt":{"rendered":"
DriverManager \u7c7b\u662f JDBC \u7684\u7ba1\u7406\u5c42\uff0c\u4f5c\u7528\u4e8e\u7528\u6237\u548c\u9a71...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-71","post","type-post","status-publish","format-standard","hentry","category-Java"],"_links":{"self":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/71","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=71"}],"version-history":[{"count":0,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/71\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=71"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=71"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=71"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}