{"id":161,"date":"2018-10-25T17:40:39","date_gmt":"2018-10-25T09:40:39","guid":{"rendered":"http:\/\/www.maoyunwang.top\/?p=161"},"modified":"2018-10-25T17:40:39","modified_gmt":"2018-10-25T09:40:39","slug":"jdbc%e6%a6%82%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/blog.tongyunli.top\/?p=161","title":{"rendered":"JDBC\u6982\u8ff0"},"content":{"rendered":"<h1><\/h1>\n<p>JDBC\uff1aJava DataBase ConnectivitySUN\u516c\u53f8\u63a8\u51fa\u7684\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u6807\u51c6\u89c4\u8303\u3002<\/p>\n<p>JDBC\u548c\u7406\u89e3\u6570\u636e\u5e93\u9a71\u52a8\u4e4b\u95f4\u7684\u5173\u7cfb\uff1a\u62bd\u8c61\u548c\u5b9e\u73b0\u7684\u5173\u7cfb\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u5f00\u53d1\u51c6\u5907\u5de5\u4f5c\uff1a<\/p>\n<ul>\n<li>JDBC\u89c4\u8303\u5728\u4f55\u5904\uff1a<\/li>\n<\/ul>\n<p>JDK<\/p>\n<p>java.sql.*;javax.sql.*;<\/p>\n<ul>\n<li>\u6570\u636e\u5e93\u9a71\u52a8\uff1ajar<\/li>\n<\/ul>\n<h1>\u4e8c\u3001\u5f00\u53d1\u7b2c\u4e00\u4e2aJDBC\u7a0b\u5e8f\uff1a\uff08\u5f88\u91cd\u8981\uff09<\/h1>\n<p>CREATE DATABASE day15;<\/p>\n<p>USE day15;<\/p>\n<p>create table users(<\/p>\n<p>id int primary key auto_increment,<\/p>\n<p>name varchar(40),<\/p>\n<p>password varchar(40),<\/p>\n<p>email varchar(60),<\/p>\n<p>birthday date<\/p>\n<p>)character set utf8 collate utf8_general_ci;<\/p>\n<p>&nbsp;<\/p>\n<p>insert into users(name,password,email,birthday) values(&#8216;zs&#8217;,&#8217;123456&#8242;,&#8217;zs@sina.com&#8217;,&#8217;1980-12-04&#8242;);<\/p>\n<p>insert into users(name,password,email,birthday) values(&#8216;lisi&#8217;,&#8217;123456&#8242;,&#8217;lisi@sina.com&#8217;,&#8217;1981-12-04&#8242;);<\/p>\n<p>insert into users(name,password,email,birthday) values(&#8216;wangwu&#8217;,&#8217;123456&#8242;,&#8217;wangwu@sina.com&#8217;,&#8217;1979-12-04&#8242;);<\/p>\n<p>\u7528JDBC\u628a\u6570\u636e\u67e5\u8be2\u51fa\u6765\uff0c\u5e76\u6253\u5370\u5230\u63a7\u5236\u53f0\u4e0a\u3002<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>\u7f16\u7801\u6b65\u9aa4\uff1a\uff08\u975e\u5e38\u91cd\u8981\uff09<\/li>\n<\/ul>\n<p>\/\/\u6ce8\u518c\u9a71\u52a8<\/p>\n<p>\/\/\u83b7\u53d6\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff1a\u4efb\u4f55\u7684\u4e0e\u6570\u636e\u5e93\u7684\u4ea4\u4e92\u90fd\u662f\u57fa\u4e8e\u8fde\u63a5\u7684<\/p>\n<p>\/\/\u5f97\u5230\u4ee3\u8868SQL\u8bed\u53e5\u7684\u5bf9\u8c61<\/p>\n<p>\/\/\u6267\u884cSQL\u8bed\u53e5<\/p>\n<p>\/\/\u5982\u679c\u6267\u884c\u7684\u67e5\u8be2\u8bed\u53e5\uff0c\u4f1a\u8fd4\u56de\u7ed3\u679c\u96c6\uff0c\u8fdb\u884c\u904d\u5386<\/p>\n<p>\/\/\u91ca\u653e\u5360\u7528\u7684\u8d44\u6e90<\/p>\n<ul>\n<li>\u5173\u4e8eResultSet\u5bf9\u8c61\u7684\u6e38\u6807\uff1a<\/li>\n<\/ul>\n<h1>\u4e09\u3001JDBC\u5e38\u7528\u7684\u7c7b\u6216\u63a5\u53e3\u8be6\u89e3<\/h1>\n<h2>1\u3001DriverManager:<\/h2>\n<h3>a\u3001\u6ce8\u518c\u9a71\u52a8<\/h3>\n<p>DriverManager.registerDriver(new com.mysql.jdbc.Driver())\uff1a\u6ce8\u518c\u9a71\u52a8\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n<p>\u539f\u56e0\u6709\u4e24\u4e2a\uff1a<\/p>\n<p>a\u3001\u5bfc\u81f4\u9a71\u52a8\u88ab\u6ce8\u518c2\u6b21<\/p>\n<p>b\u3001\u7f16\u8bd1\u65f6\u4e25\u91cd\u4f9d\u8d56\u5177\u4f53\u7684\u6570\u636e\u5e93\u9a71\u52a8<\/p>\n<p>\u6539\u8fdb\u65b9\u6848\uff1a<\/p>\n<p>Class.forName(&#8220;com.mysql.jdbc.Driver&#8221;);<\/p>\n<h3>b\u3001\u83b7\u53d6\u4e0e\u6570\u636e\u5e93\u7684\u94fe\u63a5<\/h3>\n<ul>\n<li>static Connection getConnection(String url,String user,String password);<\/li>\n<li>static Connection getConnection(String url,Properties props);<\/li>\n<li>static Connection getConnection(String url);<\/li>\n<\/ul>\n<p>Connection conn =<\/p>\n<p>DriverManager.getConnection(&#8220;jdbc:mysql:\/\/localhost:3306\/day15?user=root&amp;password=sorry&#8221;);<\/p>\n<p>&nbsp;<\/p>\n<p>\u94fe\u63a5URL\uff1a<\/p>\n<p>SUN\u516c\u53f8\u548c\u6570\u636e\u5e93\u5382\u5546\u4e4b\u95f4\u7684\u4e00\u79cd\u534f\u8bae\u3002\uff08\u67e5\u770b\u5177\u4f53\u6570\u636e\u5e93\u7684\u5e2e\u52a9\u6587\u6863\uff09<\/p>\n<p>\u5e38\u7528\u6570\u636e\u5e93\u7684\u8fde\u63a5\u4e32\uff1a<\/p>\n<p>MySQL\uff1ajdbc:mysql:\/\/localhost:3306\/day15\u6216\u8005jdbc:mysql:\/\/\/day15(\u672c\u673a\u9ed8\u8ba4\u7aef\u53e3)<\/p>\n<p>Oracle\uff1ajdbc:oracle:thin:@localhost:1521:sid<\/p>\n<h2>2\u3001java.sql.Connection\u63a5\u53e3<\/h2>\n<p>\u63a5\u53e3\u7684\u5b9e\u73b0\u5728\u6570\u636e\u5e93\u7684\u9a71\u52a8\u4e2d\u3002\u6240\u6709\u4e0e\u6570\u636e\u7684\u4ea4\u4e92\u90fd\u662f\u57fa\u4e8e\u8fde\u63a5\u5bf9\u8c61\u7684\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>Statement createStatement();\u521b\u5efa\u4ee3\u8868SQL\u8bed\u53e5\u7684\u5bf9\u8c61\u3002<\/p>\n<h2>3\u3001java.sql.Statement\u63a5\u53e3<\/h2>\n<p>\u5b9e\u73b0\u5728\u6570\u636e\u5e93\u7684\u9a71\u52a8\u4e2d\u3002\u4ee3\u8868SQL\u8bed\u53e5\u5bf9\u8c61\u3002<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>ResultSet executeQuery(String sql):\u8fd4\u56de\u7ed3\u679c\u96c6\u3002sql\u8bed\u53e5\u5fc5\u987b\u662f\u67e5\u8be2\u8bed\u53e5\u3002<\/li>\n<li>int executeUpdate(String sql):\u8fd4\u56de\u8bed\u53e5\u5f71\u54cd\u5230\u7684\u884c\u6570\u3002sql\u8bed\u53e5\u4e00\u822c\u4e3aDML\u8bed\u53e5\uff0c\u6216\u8005\u662f\u6ca1\u6709\u8fd4\u56de\u7ed3\u679c\u96c6\u7684\u5176\u4ed6\u8bed\u53e5\uff0c\u6bd4\u5982DDL\u3002<\/li>\n<li>boolean execute(String sql):\u53ef\u4ee5\u6267\u884c\u4efb\u4f55\u7684sql\u8bed\u53e5\u3002\u8fd4\u56de\u503c\u4e0d\u4ee3\u8868\u662f\u5426\u6267\u884c\u6210\u529f\u3002\u8fd4\u56detrue\u8bf4\u660e\u6709\u7ed3\u679c\u96c6\uff0c\u8fd4\u56defalse\u8bf4\u660e\u6ca1\u6709\u7ed3\u679c\u96c6\u3002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>4\u3001java.sql.ResultSet\u63a5\u53e3<\/h2>\n<h3>a\u3001\u5c01\u88c5\u7ed3\u679c<\/h3>\n<p>\u5c01\u88c5\u4e86\u67e5\u8be2\u7ed3\u679c\uff0c\u6709\u4e00\u4e2a\u53ef\u79fb\u52a8\u7684\u6e38\u6807\uff0c\u6e38\u6807\u7684\u5f00\u59cb\u4f4d\u7f6e\u5728\u7b2c\u4e00\u6761\u8bb0\u5f55\u7684\u524d\u9762\u3002<\/p>\n<p>\u53d6\u67d0\u6761\u8bb0\u5f55\u7684\u67d0\u5217\u6570\u636e\uff1a<\/p>\n<p>Object getObject(String columName):\u6309\u7167\u5217\u540d\u6765\u53d6<\/p>\n<p>Object getObject(int columCount):\u6309\u7167\u5217\u7684\u987a\u5e8f\u6765\u53d6\uff0c\u7b2c\u4e00\u5217\u4e3a1<\/p>\n<p>&nbsp;<\/p>\n<p>\u8bbe\u8ba1JavaBean\u5c01\u88c5\u67e5\u8be2\u7ed3\u679c\uff1a<\/p>\n<p>Java\u7c7b\u578b\u548c\u6570\u636e\u5e93\u7c7b\u578b\u7684\u5bf9\u5e94\u5173\u7cfb<\/p>\n<p>ResultSet\u4e2d\u63d0\u4f9b\u4e86\u5bf9\u5e94\u7c7b\u578b\u7684\u91cd\u8f7d\u65b9\u6cd5\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>b\u3001\u53ef\u6eda\u52a8\u7ed3\u679c\u96c6<\/h3>\n<p>boolean next():\u5411\u4e0b\u6eda\u52a8\u3002\u8fd4\u56de\u6709\u65e0\u8bb0\u5f55<\/p>\n<p>boolean provious():\u5411\u4e0a\u6eda\u52a8\u3002\u8fd4\u56de\u6709\u65e0\u8bb0\u5f55<\/p>\n<p>boolean absolute(int rowCount):\u5b9a\u4f4d\u5230\u67d0\u6761\u8bb0\u5f55\u3002\u7b2c\u4e00\u6761\u4e3a1<\/p>\n<p>void beforeFirst():\u6eda\u52a8\u5230\u7b2c\u4e00\u6761\u7684\u524d\u9762<\/p>\n<p>void afterLast():\u6eda\u52a8\u5230\u6700\u540e\u4e00\u6761\u7684\u540e\u9762<\/p>\n<h2>5\u3001\u91ca\u653e\u8d44\u6e90\uff1aJDBC\u7f16\u7801\u6a21\u677f<\/h2>\n<p>\u8d44\u6e90\u6709\u9650\uff0c\u5408\u7406\u91ca\u653e\u3002\u76ee\u524d\u9700\u8981\u5168\u90e8\u91ca\u653e\u3002<\/p>\n<h1>\u56db\u3001\u5229\u7528JDBC\u8fdb\u884cCRUD<\/h1>\n<p>&nbsp;<\/p>\n<h1>\u4e94\u3001\u5229\u7528JDBC\u6539\u5199\u7528\u6237\u6ce8\u518c\u548c\u767b\u9646\u6848\u4f8b<\/h1>\n<p>1\u3001\u62f7\u8d1d\u7528\u6237\u7684\u6ce8\u518c\u548c\u767b\u9646\u6848\u4f8b<\/p>\n<p>&nbsp;<\/p>\n<p>2\u3001\u642d\u5efa\u5f00\u53d1\u73af\u5883<\/p>\n<p>a\u3001\u62f7\u8d1d\u6570\u636e\u5e93\u9a71\u52a8\u5230WEB-INF\/lib\u76ee\u5f55\u4e2d<\/p>\n<p>b\u3001\u628a\u521a\u5199\u7684JDBC\u5de5\u5177\u7c7b\u548c\u914d\u7f6e\u6587\u4ef6\u641e\u8fc7\u6765<\/p>\n<p>&nbsp;<\/p>\n<p>3\u3001\u6839\u636eJavaBean\u8bbe\u8ba1\u4f60\u7684\u6570\u636e\u5e93\u8868<\/p>\n<p>USE day15;<\/p>\n<p>CREATE TABLE user(<\/p>\n<p>username varchar(100) PRIMARY KEY,<\/p>\n<p>password varchar(100) NOT NULL,<\/p>\n<p>email varchar(100) NOT NULL,<\/p>\n<p>birthday date NOT NULL<\/p>\n<p>);<\/p>\n<p>4\u3001\u6dfb\u52a0\u4e00\u4e2aDAO\u7684\u5b9e\u73b0<\/p>\n<p>&nbsp;<\/p>\n<h1>\u516d\u3001SQL\u6ce8\u5165\u3001\u53c2\u6570\u95ee\u9898\uff1aPreparedStatement\uff08\u5f88\u91cd\u8981\uff09<\/h1>\n<h2>1\u3001PreparedStatement\u7684\u4f18\u52bf\uff1a\uff08\u80fd\u7528\u8fd9\u4e2a\u5c31\u4e0d\u8981\u4f7f\u7528Statement\uff09<\/h2>\n<p>a\u3001\u6267\u884c\u6548\u7387\u8981\u6bd4Statement\u8981\u9ad8\u3002<\/p>\n<p>b\u3001\u8bbe\u7f6e\u8bed\u53e5\u4e2d\u7684\u53c2\u6570\u8981\u65b9\u4fbf\u3002<\/p>\n<p>c\u3001\u8bbe\u7f6e\u53c2\u6570\u540e\u5df2\u7ecf\u53d1\u751f\u4e86\u53d8\u5316\uff0c \u5df2\u7ecf\u4e0d\u662f\u539f\u6765\u7684\u5b57\u7b26\u4e32\u8bed\u53e5\u3002\u53ef\u4ee5\u9632\u6b62SQL\u6ce8\u5165\u3002<\/p>\n<h2>2\u3001\u5177\u4f53\u7f16\u7801<\/h2>\n<p>&nbsp;<\/p>\n<h1>\u4e03\u3001JavaWeb\u6848\u4f8b\uff1a\u5ba2\u6237\u57fa\u672c\u4fe1\u606f\u7684\u7ba1\u7406<\/h1>\n<h2>0\u3001\u9700\u6c42\u5206\u6790<\/h2>\n<h2>1\u3001\u642d\u5efa\u5f00\u53d1\u73af\u5883<\/h2>\n<p>\u5efa\u7acb\u4e00\u4e2aJavaWeb\u5e94\u7528\uff0c\u62f7\u8d1d\u4ee5\u4e0bjar\u5305\u5230WEB-INF\\lib\u76ee\u5f55\u4e2d<\/p>\n<p>mysql-connector-driver.jar<\/p>\n<p>commons-beanutils.jar<\/p>\n<p>commons-logging.jar<\/p>\n<h2>2\u3001\u5efa\u7acbJavaBean\u6216\u8005\u8bbe\u8ba1\u6570\u636e\u5e93\u8868<\/h2>\n<p>USE day15;<\/p>\n<p>CREATE TABLE customers(<\/p>\n<p>id varchar(100) PRIMARY KEY,<\/p>\n<p>name varchar(100) NOT NULL,<\/p>\n<p>gender char(1) NOT NULL,#1 male;0 female<\/p>\n<p>birthday date NOT NULL,<\/p>\n<p>cellphone varchar(20) NOT NULL,<\/p>\n<p>email varchar(100) NOT NULL,<\/p>\n<p>hobby varchar(100),#\u5403\u996d,\u7761\u89c9<\/p>\n<p>type varchar(100),#VIP|\u666e\u901a\u5ba2\u6237<\/p>\n<p>description varchar(255)<\/p>\n<p>);<\/p>\n<h2>3\u3001\u7f16\u7801\uff1a<\/h2>\n<p>JavaBean\uff1a<\/p>\n<p>Service\u63a5\u53e3\uff1a<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JDBC\uff1aJava DataBase ConnectivitySUN\u516c\u53f8\u63a8\u51fa\u7684\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u6807\u51c6\u89c4\u8303\u3002 JDBC [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[21],"class_list":["post-161","post","type-post","status-publish","format-standard","hentry","tag-21"],"_links":{"self":[{"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/posts\/161","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=161"}],"version-history":[{"count":0,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/posts\/161\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}