1.首先准备mysql 和eclipse环境，在环境搭建好之后，从eclipse官网下载jdbc的驱动包，下载地址http://dev.mysql.com/downloads/connector/j/
2.从下载的文件中取出mysql-connector-java-5.1.31-bin.jar，放到工程中，并导入路径
方法：右击工程名->Build Path->Configure Build Path,选择Add External JAR... 找到mysql-connector-java-5.1.31-bin.jar所在的位置，然后将驱动包加载到项目中，
3.写个例子测试一下
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package testmysql; import java.sql.*; public class Test { public static void main(String[] args) { String driver = "com.mysql.jdbc.Driver"; String URL = "jdbc:mysql://localhost:3306/student"; Connection con = null; try { Class.forName(driver); } catch(java.lang.ClassNotFoundException e) { System.out.println("Connect Successfull."); System.out.println("Cant't load Driver"); } try { con=DriverManager.getConnection(URL,"root","root"); System.out.println("Connect Successfull."); } catch(Exception e) { System.out.println("Connect fail:" + e.getMessage()); } } } |
连接上数据库之后，可以根据表中的内容进行数据库表的查询，首先表中要有内容，将一些信息输入到表中之后即可使用SQL语言进行查询
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import java.sql.*; public class Main { public static void main(String[] args) { String driver = "com.mysql.jdbc.Driver"; String URL = "jdbc:mysql://localhost:3306/xiaolu"; Connection con = null; ResultSet rs = null; Statement st = null; String sql = "select * from student"; try { Class.forName(driver); } catch(java.lang.ClassNotFoundException e) { // System.out.println("Connect Successfull."); System.out.println("Cant't load Driver"); } try { con=DriverManager.getConnection(URL,"root","root"); st=con.createStatement(); rs=st.executeQuery(sql); if(rs!=null) { ResultSetMetaData rsmd = rs.getMetaData(); int countcols = rsmd.getColumnCount(); for(int i=1;i<=countcols;i++) { if(i>1) System.out.print(";"); System.out.print(rsmd.getColumnName(i)+" "); } System.out.println(""); while(rs.next()) { System.out.print(rs.getString("sno")+" "); System.out.print(rs.getString("sname")+" "); System.out.print(rs.getString("ssex")+" "); System.out.print(rs.getString("sage")+" "); System.out.println(rs.getString("sdept")+" "); } } //System.out.println("Connect Successfull."); System.out.println("ok"); rs.close(); st.close(); con.close(); } catch(Exception e) { System.out.println("Connect fail:" + e.getMessage()); } } } |
关于JDBC连接MySQL5.7的文章就介绍到这，其他的可以查下服务器之家其它相关文章。
原文链接：https://blog.csdn.net/lxl121181/article/details/78056415
