{"id":1579,"date":"2016-05-11T09:37:20","date_gmt":"2016-05-11T01:37:20","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=1579"},"modified":"2016-05-11T09:45:31","modified_gmt":"2016-05-11T01:45:31","slug":"java%e7%a8%8b%e5%ba%8f%e4%b8%8e%e6%95%b0%e6%8d%ae%e5%ba%93%e8%bf%9e%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=1579","title":{"rendered":"Java\u7a0b\u5e8f\u4e0e\u6570\u636e\u5e93\u8fde\u63a5"},"content":{"rendered":"

\u4e00\u4e2a\u7f51\u7edc\u5173\u7cfb\u6570\u636e\u5e93\u5e94\u7528\u7cfb\u7edf\u662f\u4e00\u4e2a\u4e09\u5c42\u6b21\u7ed3\u6784\u3002\u5ba2\u6237\u673a\u4e0e\u670d\u52a1\u5668\u91c7\u7528\u7f51\u7edc\u8fde\u63a5\uff0c\u5ba2\u6237\u673a\u7aef\u5e94\u7528\u7a0b\u5e8f\u6309\u901a\u4fe1\u534f\u8bae\u4e0e\u670d\u52a1\u5668\u7aef\u7684\u6570\u636e\u5e93\u7a0b\u5e8f\u901a\u4fe1\uff1b\u6570\u636e\u5e93\u670d\u52a1\u7a0b\u5e8f\u901a\u8fc7SQL\u547d\u4ee4\u4e0e\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u901a\u4fe1\u3002<\/p>\n

Java\u7a0b\u5e8f\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u65b9\u6cd5\u6709\u4e24\u79cd\u3002
\n\u4e00\u79cd\u662f\u4f7f\u7528JDBC-ODBC\u6865\u63a5\u5668\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\uff0c
\n\u4e00\u79cd\u662f\u7528\u7eafJava\u7684JDBC\u9a71\u52a8\u7a0b\u5e8f\u5b9e\u73b0\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u3002<\/p>\n

\u4f7f\u7528JDBC-ODBC \u6865\u63a5\u5668\u4e0e\u6570\u636e\u5e93\u8fde\u63a5<\/h2>\n

Java\u7a0b\u5e8f\u4f7f\u7528JDBC-ODBC \u6865\u63a5\u5668\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\uff0cJava\u7a0b\u5e8f\u4e0e\u6570\u636e\u5e93\u901a\u4fe1\u7684\u8fc7\u7a0b\u662f\uff1a
\n\u5148\u7531\u6570\u636e\u5e93\u5e94\u7528\u7a0b\u5e8f\u5411ODBC\u9a71\u52a8\u7ba1\u7406\u5668\u53d1\u51faAPI\u8c03\u7528\uff0cODBC\u9a71\u52a8\u7ba1\u7406\u5668\u5c06\u8fd9\u4e2a\u8c03\u7528\u8f6c\u6362\u6210\u5411\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684ODBC\u9a71\u52a8\u7a0b\u5e8f\u8c03\u7528\uff0c\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u53c8\u5c06\u8fd9\u4e2a\u8c03\u7528\u8f6c\u6362\u6210\u5bf9\u64cd\u4f5c\u7cfb\u7edf\u7684\u6570\u636e\u8f93\u5165\/\u8f93\u51fa\u8c03\u7528\u3002\u6700\u540e\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4ece\u6570\u636e\u5e93\u4e2d\u5f97\u5230\u5b9e\u9645\u6570\u636e\u9010\u7ea7\u8fd4\u56de\u3002<\/p>\n

\u6570\u636e\u5e93\u7f16\u7a0b\u9996\u5148\u8981\u8bbe\u7f6e\u6570\u636e\u6e90\uff0c\u5728ODBC\u4e2d\u8bbe\u7f6e\u6570\u636e\u6e90\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a
\n\u6253\u5f00Windows\u63a7\u5236\u9762\u677f\u4e2d\u7684\u7ba1\u7406\u5de5\u5177\u3002\u5bf9\u4e8ewindows XP\uff1a\u9009\u62e9\u201c\u6027\u80fd\u7ef4\u62a4\u201d>>\u201c\u7ba1\u7406\u5de5\u5177\u201d>>\u201c\u6570\u636e\u6e90(ODBC)\u201d\uff1b \u5bf9\u4e8ewindows 2000\uff1a\u9009\u62e9\u201c\u7ba1\u7406\u5de5\u5177\u201d>>\u201c\u6570\u636e\u6e90\u201d\u3002
\n\u6253\u5f00\u201c\u6570\u636e\u6e90\u201d\u3002\u51fa\u73b0ODBC\u6570\u636e\u6e90\u7ba1\u7406\u5668\u5bf9\u8bdd\u6846\uff0c\u663e\u793a\u73b0\u6709\u7684\u6570\u636e\u6e90\u540d\u79f0\u3002
\n\u9009\u62e9\u201c\u7528\u6237DSN\u201d\uff0c\u5355\u51fb\u201c\u6dfb\u52a0\u201d\u6309\u94ae\uff0c\u51fa\u73b0\u5b89\u88c5\u6570\u636e\u6e90\u9a71\u52a8\u7a0b\u5e8f\u5bf9\u8bdd\u6846\u3002Access(*.mdb)\u6570\u636e\u6e90\uff0c\u5355\u51fb\u201c\u5b8c\u6210\u201d\u6309\u94ae\uff0c\u51fa\u73b0\u201c\u521b\u5efa\u6570\u636e\u6e90\u5bf9\u8bdd\u6846\uff0c\u952e\u5165\u9700\u8981\u521b\u5efa\u7684\u6570\u636e\u6e90\u540d\uff0c\u5e76\u4e3a\u521b\u5efa\u7684\u6570\u636e\u6e90\u9009\u62e9\u4e00\u4e2a\u6570\u636e\u5e93\u8868\u3002
\n\u5355\u51fb\u6570\u636e\u5e93\u533a\u57df\u7684\u201c\u9009\u62e9\u201d\u6309\u94ae\uff0c\u9009\u62e9\u9700\u8981\u7684\u6570\u636e\u5e93\u8868\u3002\u5f53\u9700\u8981\u4e3a\u6570\u636e\u6e90\u6388\u6743\u8bbf\u95ee\u7ea7\u522b\u65f6\uff0c\u5355\u51fb\u201c\u9ad8\u7ea7\u201d\u6309\u94ae\u3002\u8bbe\u7f6e\u767b\u5f55\u540d\u548c\u5bc6\u7801\u540e\uff0c\u5355\u51fb\u201c\u786e\u5b9a\u201d\u6309\u94ae\uff0c\u5b8c\u6210Access\u6570\u636e\u5e93\u5728ODBC\u7ba1\u7406\u5668\u4e2d\u7684\u914d\u7f6e\u3002
\n\u5982\u679c\u8fd8\u6ca1\u6709\u6570\u636e\u5e93\u8868\uff0c\u5219\u9700\u521b\u5efa\u4e00\u4e2a\u6570\u636e\u5e93\u8868\u3002<\/p>\n

\u6570\u636e\u6e90\u5c31\u662f\u6570\u636e\u5e93\uff0c\u5728\u8bbe\u5b9a\u4e86\u6570\u636e\u6e90\u7684\u57fa\u7840\u4e0a\uff0cJava\u7a0b\u5e8f\u8981\u8bbf\u95ee\u6570\u636e\u5e93\u8868\uff0c\u8fd8\u8981\u5efa\u7acbJDBC-ODBC\u6865\u63a5\u5668\uff0c\u8ba9\u7a0b\u5e8f\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u3002\u4ee5\u540e\uff0c\u7a0b\u5e8f\u5c31\u53ef\u5411\u6570\u636e\u5e93\u53d1\u9001SQL\u8bed\u53e5\uff0c\u5904\u7406\u6570\u636e\u5e93\u8fd4\u56de\u7684\u7ed3\u679c\u3002
\nJava\u6570\u636e\u5e93\u8fde\u63a5JDBC(Java DataBase Connectivity)\u7531\u4e00\u7ec4\u7528Java\u8bed\u8a00\u7f16\u5199\u7684\u7c7b\u548c\u63a5\u53e3\u7ec4\u6210\uff0cJDBC\u662fJava\u7a0b\u5e8f\u4e0e\u6570\u636e\u5e93\u8fde\u63a5API\u3002\u5b83\u80fd\u505a\u4ee5\u4e0b\u4e09\u4ef6\u4e8b\u60c5\uff1a\u4e0e\u67d0\u4e2a\u6570\u636e\u5e93\u5efa\u7acb\u8fde\u63a5\u3001\u5411\u6570\u636e\u5e93\u53d1\u9001SQL\u8bed\u53e5\u548c\u5904\u7406\u6570\u636e\u5e93\u8fd4\u56de\u7684\u7ed3\u679c\u3002<\/p>\n

\u8c03\u7528\u7c7b\u65b9\u6cd5Class.forName(String s)\u80fd\u5efa\u7acbJDBC-ODBC\u6865\u63a5\u5668\u3002\u4f8b\u5982\uff0c\u4ee3\u7801\uff1a
\n[java]try{
\n Class.forName(\u201csun.jdbc.odbc.JdbcOdbcDriver\u201d);
\n}catch(Exception e){}[\/java]
\n\u4e3aJava\u7a0b\u5e8f\u52a0\u8f7d\u4e86\u9a71\u52a8\u7a0b\u5e8f\u3002<\/p>\n

\u3010\u4f8b 13-7\u3011\u8bf4\u660e\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u7684\u65b9\u6cd5connectByJdbcOdbc()\uff0c\u8be5\u65b9\u6cd5\u6309\u7ed9\u5b9a\u7684\u6570\u636e\u5e93URL\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u8fde\u63a5\u6570\u636e\u5e93\uff0c\u5982\u679c\u8fde\u63a5\u6210\u529f\uff0c\u65b9\u6cd5\u8fd4\u56de\u8fde\u63a5\u5bf9\u8c61\uff0c\u8fde\u63a5\u4e0d\u6210\u529f\uff0c\u5219\u8fd4\u56de\u7a7a\uff08\u67e5\u770b\u6e90\u6587\u4ef6\uff09\u3002
\n\u7528\u7eafJava\u7684JDBC\u9a71\u52a8\u7a0b\u5e8f\u5b9e\u73b0\u4e0e\u6570\u636e\u5e93\u8fde\u63a5<\/p>\n

Java\u7a0b\u5e8f\u4e5f\u53ef\u4ee5\u7528\u7eafJava\u7684JDBC\u9a71\u52a8\u7a0b\u5e8f\u5b9e\u73b0\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u3002\u8fd9\u79cd\u65b9\u6cd5\u5e94\u7528\u8f83\u5e7f\u6cdb\uff0c\u4f46\u662f\u9700\u8981\u4e0b\u8f7d\u76f8\u5e94\u7684\u9a71\u52a8\u7a0b\u5e8f\u5305\uff0c\u56e0\u4e3a\u4e0d\u540c\u7684\u6570\u636e\u5e93\u7684\u8fde\u63a5\u4ee3\u7801\u53ef\u80fd\u4e0d\u540c\uff0c\u8fde\u63a5\u4e0d\u540c\u7684\u6570\u636e\u5e93\uff0c\u52a0\u8f7d\u7684\u9a71\u52a8\u7a0b\u5e8f\u4e5f\u53ef\u80fd\u4e0d\u540c\u3002
\n\u4f8b\u5982\uff0c\u8fde\u63a5SQLServer\u7684\u9a71\u52a8\u7a0b\u5e8f\u5728www.msdn.com\u7f51\u7ad9\u4e0b\u8f7d\uff0c\u67093\u4e2a\u5305\uff1amsbase.jar,mssqlserver.jar\u548cmsutil.jar\uff0c\u5e76\u8981\u6c42\u5c06\u8fd93\u4e2a\u5305\u653e\u5728jdk\\jre\\lib\\ext\\\u76ee\u5f55\u4e0b\uff0c\u6216\u5728CLASSPATH\u4e2d\u8bbe\u7f6e\u5176\u653e\u7f6e\u4f4d\u7f6e\u3002
\n\u8fde\u63a5MySQL\u7684\u9a71\u52a8\u7a0b\u5e8f\uff0c1\u4e2a\u5305:mysql-connector-java-3.1.11-bin.jar<\/p>\n

\u4f7f\u7528\u7eafJava\u7684JDBC\u9a71\u52a8\u7a0b\u5e8f\u5b9e\u73b0\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u7684\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/h2>\n

\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u3002\u6709\u4e24\u79cd\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u7684\u65b9\u5f0f\uff1a
\n\u4e00\u4e2a\u662f\u5c06\u9a71\u52a8\u7a0b\u5e8f\u6dfb\u52a0\u5230java.lang.System\u7684\u5c5e\u6027jdbc.drivers\u4e2d\u3002\u8fd9\u662f\u4e00\u4e2aDriverManager\u7c7b\u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u7c7b\u540d\u7684\u5217\u8868\uff0c\u8868\u5143\u7528\u5192\u53f7\u5206\u9694\u3002
\n\u53e6\u4e00\u79cd\u65b9\u5f0f\u662f\u4ece\u76f8\u5173\u7684\u7f51\u7ad9\u4e0b\u8f7d\u9a71\u52a8\u7a0b\u5e8f\u540e\uff0c\u5728\u7a0b\u5e8f\u4e2d\u5229\u7528Class.forName()\u65b9\u6cd5\u52a0\u8f7d\u6307\u5b9a\u7684\u9a71\u52a8\u7a0b\u5e8f\u3002\u4f8b\u5982\uff1a
\n[java]Class.forName(\u201ccom.microsoft.jdbc.sqlserver.SQLServerDriver\u201d);
\nClass.forName("com.mysql.jdbc.Driver");\/\/\u52a0\u8f7d\u7279\u5b9a\u7684\u9a71\u52a8\u7a0b\u5e8f[\/java]<\/p>\n

\u521b\u5efa\u6307\u5b9a\u6570\u636e\u5e93\u7684URL\u3002\u6570\u636e\u5e93\u7684URL\u5bf9\u8c61\u7c7b\u4f3c\u7f51\u7edc\u7684\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u7b26\uff0c\u5176\u683c\u5f0f\u662f\uff1a
\nsubprotocol:subName:\/\/hostName:port\/DatabaseName
\n\u5176\u4e2d\uff0csubprotocol\u662f\u67d0\u79cd\u9a71\u52a8\u7a0b\u5e8f\u652f\u6301\u7684\u6570\u636e\u5e93\u8fde\u63a5\u673a\u5236\uff1b subName\u662f\u5f53\u524d\u8fde\u63a5\u673a\u5236\u4e0b\u7684\u5177\u4f53\u540d\u79f0\uff1bhostName\u662f\u4e3b\u673a\u540d\uff1bport\u662f\u76f8\u5e94\u7684\u8fde\u63a5\u7aef\u53e3\uff1bDatabaseName\u662f\u8981\u8fde\u63a5\u7684\u6570\u636e\u5e93\u540d\u79f0\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u53ef\u4ee5\u662f\u4e00\u4e2a\u6570\u636e\u5e93\u7684URL\uff1a<\/p>\n

[java]jdbc:Microsoft:sqlserver:\/\/localhost:1433;Databasename=ksinfo
\njdbc:mysql:\/\/localhost:3306\/\u6570\u636e\u5e93\u540d[\/java]
\n\u8be5\u6570\u636e\u5e93\u7684URL\u8bf4\u660e\u5229\u7528miscrosoft\u63d0\u4f9b\u7684\u673a\u5236\uff0c\u7528sqlserve\u9a71\u52a8\uff0c\u901a\u8fc71433\u7aef\u53e3\u8bbf\u95ee\u672c\u673a\u4e0a\u7684ksInfo\u6570\u636e\u5e93\u3002<\/p>\n

\u5efa\u7acb\u8fde\u63a5\u3002\u9a71\u52a8\u7a0b\u5e8f\u7ba1\u7406\u5668(DriverManager)\u7684\u65b9\u6cd5getConnection()\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n

\u4f7f\u7528\u7eafJava\u7684JDBC\u9a71\u52a8\u7a0b\u5e8f\u5b9e\u73b0\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u7684\u6b65\u9aa4\u5982\u4e0b:<\/h3>\n

1.\u4e0b\u8f7d\u76f8\u5e94\u7684\u9a71\u52a8\u7a0b\u5e8f\u5305\uff0c\u5982:\u8fde\u63a5Mysql\u6570\u636e\u9a71\u52a8\u5305\u4e3a:mysql-connector-java-3.1.11-bin.jar
\n2. \u52a0\u8f7d\u9a71\u52a8\u7a0b\u5e8f, Class.forName(“com.mysql.jdbc.Driver”);\/\/\u52a0\u8f7d\u7279\u5b9a\u7684\u9a71\u52a8\u7a0b\u5e8f
\n3. Connection con = DriverManage.getConnection(“jdbc:mysql:\/\/localhost:3306\/\u6570\u636e\u5e93\u540d”, username, password);
\n\u3010\u4f8b 13-8\u3011\u8bf4\u660e\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u7684\u9759\u6001\u65b9\u6cd5connectByJdbc()\uff0c\u8be5\u65b9\u6cd5\u6309\u7ed9\u5b9a\u7684\u6570\u636e\u5e93URL\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u8fde\u63a5\u6570\u636e\u5e93\uff0c\u5982\u679c\u8fde\u63a5\u6210\u529f\uff0c\u65b9\u6cd5\u8fd4\u56detrue\uff0c\u8fde\u63a5\u4e0d\u6210\u529f\uff0c\u5219\u8fd4\u56defalse\u3002
\n[java]public static Connection conectByJdbc(String url, String username, String password){
\nString url = "jdbc:mysql:\/\/localhost:3306\/scxh";
\nConnection con = null;
\ntry{
\n Class.forName("com.mysql.jdbc.Driver");\/\/\u52a0\u8f7d\u7279\u5b9a\u7684\u9a71\u52a8\u7a0b\u5e8f
\n}
\ncatch (Exception e){
\ne.printStackTrace();
\nreturn null; \/\/\u8fde\u63a5\u5931\u8d25
\n}
\ntry{
\n con = DriverManage.getConnection(url, username, password);
\n}
\ncatch (SQLException e){
\n e.printStackTrace();
\n return null; \/\/\u8fde\u63a5\u5931\u8d25
\n}
\nreturn con; \/\/\u8fde\u63a5\u6210\u529f
\n}
\n[\/java]
\n <\/p>\n

\u7f16\u5199\u8bbf\u95ee\u6570\u636e\u5e93\u7684Java\u7a0b\u5e8f\u8fd8\u9700\u8981\u51e0\u4e2a\u91cd\u8981\u7684\u7c7b\u548c\u63a5\u53e3\u3002<\/strong><\/span><\/p>\n

DriverManager\u7c7b<\/h3>\n

DriverManager\u7c7b\u5904\u7406\u9a71\u52a8\u7a0b\u5e8f\u7684\u52a0\u8f7d\u548c\u5efa\u7acb\u65b0\u6570\u636e\u5e93\u8fde\u63a5\u3002DriverManager\u662fjava.sql\u5305\u4e2d\u7528\u4e8e\u7ba1\u7406\u6570\u636e\u5e93\u9a71\u52a8\u7a0b\u5e8f\u7684\u7c7b\u3002\u901a\u5e38\uff0c\u5e94\u7528\u7a0b\u5e8f\u53ea\u4f7f\u7528\u7c7bDriverManager\u7684getConnection()\u9759\u6001\u65b9\u6cd5\uff0c\u7528\u6765\u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff0c\u8fd4\u56deConnection\u5bf9\u8c61\uff1a
\nstatic Connection getConnection(String url,String username,String password)
\n\u6307\u5b9a\u6570\u636e\u7684URL\u7528\u6237\u540d\u548c\u5bc6\u7801\u521b\u5efa\u6570\u636e\u5e93\u8fde\u63a5\u5bf9\u8c61\u3002url\u7684\u8bed\u6cd5\u683c\u5f0f\u662f\uff1a
\njdbc:<\u6570\u636e\u5e93\u7684\u8fde\u63a5\u673a\u5236>:<ODBC\u6570\u636e\u5e93\u540d>\u3002<\/p>\n

Connection\u7c7b
\n<\/h3>\n

Connection\u7c7b\u662fjava.sql\u5305\u4e2d\u7528\u4e8e\u5904\u7406\u4e0e\u7279\u5b9a\u6570\u636e\u5e93\u8fde\u63a5\u7684\u7c7b\u3002Connection\u5bf9\u8c61\u662f\u7528\u6765\u8868\u793a\u6570\u636e\u5e93\u8fde\u63a5\u7684\u5bf9\u8c61\uff0cJava\u7a0b\u5e8f\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u90fd\u5728\u8fd9\u79cd\u5bf9\u8c61\u4e0a\u8fdb\u884c\u3002Connection\u7c7b\u7684\u4e3b\u8981\u65b9\u6cd5\u6709\uff1a
\n[java]
\nStatement createStatement()\uff1a\u521b\u5efa\u4e00\u4e2aStatement\u5bf9\u8c61\u3002
\nStatement createStatement(int resultSetType,int resultSetConcurrency)\uff1a\u521b\u5efa\u4e00\u4e2aStatement\u5bf9\u8c61\uff0c\u751f\u6210\u5177\u6709\u7279\u5b9a\u7c7b\u578b\u7684\u7ed3\u679c\u96c6\u3002
\nvoid commit()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u63d0\u4ea4\u5bf9\u6570\u636e\u5e93\u7684\u6539\u52a8\u5e76\u91ca\u653e\u5f53\u524d\u6301\u6709\u7684\u6570\u636e\u5e93\u7684\u9501\u3002
\nvoid rollback()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u56de\u6eda\u5f53\u524d\u4e8b\u52a1\u4e2d\u7684\u6240\u6709\u6539\u52a8\u5e76\u91ca\u653e\u5f53\u524d\u8fde\u63a5\u6301\u6709\u7684\u6570\u636e\u5e93\u7684\u9501\u3002
\nString getCatalog()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u83b7\u5f97\u8fde\u63a5\u5bf9\u8c61\u7684\u5f53\u524d\u76ee\u5f55\u3002
\nboolean isClose()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u65ad\u8fde\u63a5\u662f\u5426\u5df2\u5173\u95ed\u3002
\nboolean isReadOnly()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u65ad\u8fde\u63a5\u662f\u5426\u4e3a\u53ea\u8bfb\u6a21\u5f0f\u3002
\nvoid setReadOnly()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8bbe\u7f6e\u8fde\u63a5\u4e3a\u53ea\u8bfb\u6a21\u5f0f\u3002
\nvoid close()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u91ca\u653e\u8fde\u63a5\u5bf9\u8c61\u7684\u6570\u636e\u5e93\u548cJDBC\u8d44\u6e90\u3002[\/java]<\/p>\n

Statement\u7c7b<\/h3>\n

Statement\u7c7b\u662fjava.sql\u5305\u4e2d\u7528\u4e8e\u5728\u6307\u5b9a\u7684\u8fde\u63a5\u4e2d\u5904\u7406SQL\u8bed\u53e5\u7684\u7c7b\u3002\u6570\u636e\u5e93\u7f16\u7a0b\u7684\u8981\u70b9\u662f\u5728\u7a0b\u5e8f\u4e2d\u5d4c\u5165SQL\u547d\u4ee4\u3002\u7a0b\u5e8f\u9700\u8981\u58f0\u660e\u548c\u521b\u5efa\u8fde\u63a5\u6570\u636e\u5e93\u7684Connection\u5bf9\u8c61\uff0c\u5e76\u8ba9\u8be5\u5bf9\u8c61\u8fde\u63a5\u6570\u636e\u5e93\u3002\u8c03\u7528\u7c7bDriverManager\u7684\u9759\u6001\u65b9\u6cd5getConnection()\u83b7\u5f97Connection\u5bf9\u8c61\uff0c\u5b9e\u73b0\u7a0b\u5e8f\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u3002\u7136\u540e\uff0c\u7528Statement\u7c7b\u58f0\u660eSQL\u8bed\u53e5\u5bf9\u8c61\uff0c\u5e76\u8c03\u7528Connection\u5bf9\u8c61\u7684createStatement()\u65b9\u6cd5\uff0c\u521b\u5efaSQL\u8bed\u53e5\u5bf9\u8c61\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u521b\u5efa\u8bed\u53e5\u5bf9\u8c61sql\uff1a
\n[java]Statement sql = null;
\ntry{
\nsql = con.createStatement();
\n}catch(SQLException e){}[\/java]<\/p>\n

ResultSet\u7c7b<\/h3>\n

\u6709\u4e86SQL\u8bed\u53e5\u5bf9\u8c61\u540e\uff0c\u8c03\u7528\u8bed\u53e5\u5bf9\u8c61\u7684\u65b9\u6cd5executeQuery()\u6267\u884cSQL\u67e5\u8be2\uff0c\u5e76\u5c06\u67e5\u8be2\u7ed3\u679c\u5b58\u653e\u5728\u4e00\u4e2a\u7528ResultSet\u7c7b\u58f0\u660e\u7684\u5bf9\u8c61\u4e2d\uff0c\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u8bfb\u53d6\u5b66\u751f\u6210\u7ee9\u8868\u5b58\u4e8ers \u5bf9\u8c61\u4e2d\uff1a
\nResultSet rs = sql.executeQuery(\u201cSELECT * FROM ksInfo\u201d);
\nResultSet\u5bf9\u8c61\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u7531\u67e5\u8be2\u7ed3\u679c\u6570\u636e\u7684\u8868\uff0c\u662f\u4e00\u4e2a\u7ba1\u5f0f\u6570\u636e\u96c6\uff0c\u7531\u7edf\u4e00\u5f62\u5f0f\u7684\u6570\u636e\u884c\u7ec4\u6210\uff0c\u4e00\u884c\u5bf9\u5e94\u4e00\u6761\u67e5\u8be2\u8bb0\u5f55\u3002\u5728ResultSet\u5bf9\u8c61\u4e2d\u9690\u542b\u7740\u4e00\u4e2a\u6e38\u6807\uff0c\u4e00\u6b21\u53ea\u80fd\u83b7\u5f97\u6e38\u6807\u5f53\u524d\u6240\u6307\u7684\u6570\u636e\u884c\uff0c\u7528next\u65b9\u6cd5\u53ef\u53d6\u4e0b\u4e00\u4e2a\u6570\u636e\u884c\u3002\u7528\u6570\u636e\u884c\u7684\u5b57\u6bb5(\u5217)\u540d\u79f0\u6216\u4f4d\u7f6e\u7d22\u5f15(\u81ea1\u5f00\u59cb)\u8c03\u7528\u5f62\u5982getXXX()\u65b9\u6cd5\u83b7\u5f97\u8bb0\u5f55\u7684\u5b57\u6bb5\u690d \u3002\u4ee5\u4e0b\u662fResultSet\u5bf9\u8c61\u7684\u90e8\u5206\u65b9\u6cd5\uff1a
\n[java]byte getByte(int columnIndex)\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6307\u5b9a\u5b57\u6bb5\u7684\u5b57\u8282\u503c\u3002
\nDate getDate(int columnIndex)\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6307\u5b9a\u5b57\u6bb5\u7684\u65e5\u671f\u503c\u3002
\nfloat getFloat(int columnIndex)\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6307\u5b9a\u5b57\u6bb5\u7684\u6d6e\u70b9\u503c\u3002
\nint getInt(int columnIndex)\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6307\u5b9a\u5b57\u6bb5\u7684\u6574\u6570\u503c\u3002
\nString getString(int columnIndex)\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6307\u5b9a\u5b57\u6bb5\u7684\u5b57\u7b26\u4e32\u503c\u3002
\ndouble getDouble(String columnName)\uff1a\u8fd4\u56de\u6307\u5b9a\u5b57\u6bb5\u7684\u53cc\u7cbe\u5ea6\u503c\u3002
\nlong getLong(String columnName)\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0 \u8fd4\u56de\u6307\u5b9a\u5b57\u6bb5\u7684long\u578b\u6574\u503c\u3002
\nboolean next()\uff1a\u8fd4\u56de\u662f\u5426\u8fd8\u6709\u4e0b\u4e00\u5b57\u6bb5\u3002[\/java]
\n\u4ee5\u4e0a\u65b9\u6cd5\u4e2d\u7684columnIndex\u662f\u4f4d\u7f6e\u7d22\u5f15\uff0c\u7528\u4e8e\u6307\u5b9a\u5b57\u6bb5\uff0ccolumnName\u662f\u5b57\u6bb5\u540d\u3002<\/p>\n

\u7528\u6237\u9700\u8981\u5728\u67e5\u8be2\u7ed3\u679c\u96c6\u4e0a\u6d4f\u89c8\uff0c\u6216\u524d\u540e\u79fb\u52a8\u3001\u6216\u663e\u793a\u7ed3\u679c\u96c6\u7684\u6307\u5b9a\u8bb0\u5f55\uff0c\u8fd9\u79f0\u4e3a\u53ef\u6eda\u52a8\u7ed3\u679c\u96c6\u3002\u7a0b\u5e8f\u8981\u83b7\u5f97\u4e00\u4e2a\u53ef\u6eda\u52a8\u7ed3\u679c\u96c6\uff0c\u53ea\u8981\u5728\u83b7\u5f97SQL\u7684\u8bed\u53e5\u5bf9\u8c61\u65f6\uff0c\u589e\u52a0\u6307\u5b9a\u7ed3\u679c\u96c6\u7684\u4e24\u4e2a\u53c2\u6570\u5373\u53ef\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\uff1a
\n[java]Statement stmt = con.createStatement(type,concurrency);
\nResultSet rs = stmt.executeQuery(SQL\u8bed\u53e5)
\n\u8bed\u53e5\u5bf9\u8c61stmt\u7684SQL\u67e5\u8be2\u5c31\u80fd\u5f97\u5230\u76f8\u5e94\u7c7b\u578b\u7684\u7ed3\u679c\u96c6\u3002
\nint \u578b\u53c2\u6570type\u51b3\u5b9a\u53ef\u6eda\u52a8\u96c6\u7684\u6eda\u52a8\u65b9\u5f0f\uff1a
\nResultSet.TYPE_FORWORD_ONLY,\u7ed3\u679c\u96c6\u7684\u6e38\u6807\u53ea\u80fd\u5411\u4e0b\u6eda\u52a8\u3002
\nResultSet.TYPE_SCROLL_INSENSITIVE,\u6e38\u6807\u53ef\u4e0a\u4e0b\u79fb\u52a8\uff0c\u5f53\u6570\u636e\u5e93\u53d8\u5316\u65f6\uff0c\u5f53\u524d\u7ed3\u679c\u96c6\u4e0d\u53d8\u3002
\nResultSet. TYPE_SCROLL_SENSITIVE\uff0c\u6e38\u6807\u53ef\u4e0a\u4e0b\u79fb\u52a8\uff0c\u5f53\u6570\u636e\u5e93\u53d8\u5316\u65f6\uff0c\u5f53\u524d\u7ed3\u679c\u96c6\u540c\u6b65\u6539\u53d8\u3002
\nint \u578b\u53c2\u6570concurrency\u51b3\u5b9a\u6570\u636e\u5e93\u662f\u5426\u4e0e\u53ef\u6eda\u52a8\u96c6\u540c\u6b65\u66f4\u65b0\uff1a
\nResultSet.CONCUR_READ_ONLY,\u4e0d\u80fd\u7528\u7ed3\u679c\u96c6\u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u7684\u8868\u3002
\nResultSet.CONCUR_UPDATETABLE,\u80fd\u7528\u7ed3\u679c\u96c6\u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u7684\u8868\u3002[\/java]<\/p>\n

\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5229\u7528\u8fde\u63a5\u5bf9\u8c61connect\uff0c\u521b\u5efaStatement\u5bf9\u8c61stmt\uff0c\u6307\u5b9a\u7ed3\u679c\u96c6\u53ef\u6eda\u52a8\uff0c\u5e76\u4ee5\u53ea\u8bfb\u65b9\u5f0f\u8bfb\u6570\u636e\u5e93\uff1a
\nstmt = connect.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
\nResultSet.CONCUR_READ_ONLY);
\n\u53ef\u6eda\u52a8\u96c6\u4e0a\u53e6\u5916\u4e00\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\u5982\u4e0b\uff1a
\n[java]boolean previous()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5c06\u6e38\u6807\u5411\u4e0a\u79fb\u52a8\uff0c\u5f53\u79fb\u5230\u7ed3\u679c\u96c6\u7684\u7b2c\u4e00\u884c\u65f6\uff0c\u8fd4\u56defalse\u3002
\nvoid beforeFirst()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5c06\u6e38\u6807\u79fb\u7ed3\u679c\u96c6\u7684\u7b2c\u4e00\u884c\u4e4b\u524d\u3002
\nvoid afterLast()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5c06\u6e38\u6807\u79fb\u5230\u7ed3\u679c\u96c6\u7684\u6700\u540e\u4e00\u884c\u4e4b\u540e\u3002
\nvoid first()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5c06\u6e38\u6807\u79fb\u5230\u7b2c\u4e00\u884c\u3002
\nvoid last()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5c06\u6e38\u6807\u79fb\u5230\u6700\u540e\u4e00\u884c\u3002
\nboolean isAfterLast()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u6e38\u6807\u662f\u5426\u5728\u6700\u540e\u4e00\u884c\u4e4b\u540e\u3002
\nboolean isBeforeFirst()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u6e38\u6807\u662f\u5426\u5728\u7b2c\u4e00\u884c\u4e4b\u524d\u3002
\nboolean isLast()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u6e38\u6807\u662f\u5426\u5728\u6700\u540e\u4e00\u884c\u3002
\nboolean isFirst()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5224\u6e38\u6807\u662f\u5426\u5728\u7b2c\u4e00\u884c\u3002
\nint getRow()\uff1a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u83b7\u53d6\u5f53\u524d\u6240\u6307\u7684\u884c(\u884c\u53f7\u81ea1\u5f00\u59cb\u7f16\u53f7\uff0c\u7ed3\u679c\u96c6\u7a7a\uff0c\u8fd4\u56de0)\u3002
\nboolean absolute(int row)\uff1a\u00a0\u00a0 \u5c06\u6e38\u6807\u79fb\u5230row\u884c\u3002[\/java]<\/p>\n","protected":false},"excerpt":{"rendered":"

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