import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class helloworld { public static void main(String[] args) throws ClassNotFoundException, SQLException { Class.forName("com.mysql.jdbc.Driver"); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydata?useUnicode=true&characterEncoding=utf-8", "root", ""); System.out.println(con); String sql_in = "insert into student values(null, ?, ?)"; PreparedStatement pst_in = con.prepareStatement(sql_in); pst_in.setString(1, "灑錒魤"); pst_in.setInt(2, 56); int exi = pst_in.executeUpdate(); if(exi == 1) System.out.println("insert success"); String sql_de = "delete from student where id=?"; PreparedStatement pst_de = con.prepareStatement(sql_de); pst_de.setInt(1, 13); int exd = pst_de.executeUpdate(); if(exd == 1) System.out.println("delete success"); String sql_ud = "update student set name=?,age=? where id=?"; PreparedStatement pst_ud = con.prepareStatement(sql_ud); pst_ud.setString(1, "xiaohong"); pst_ud.setInt(2, 99); pst_ud.setInt(3, 8); int exu = pst_ud.executeUpdate(); if(exu == 1) System.out.println("update success"); String sql = "select * from student"; PreparedStatement pst = con.prepareStatement(sql); ResultSet rs = pst.executeQuery(); while(rs.next()) { int id = rs.getInt(1); String name = rs.getString(2); int age = rs.getInt(3); System.out.printf("%d %s %d\n", id, name, age); } rs.close(); pst.close(); con.close(); } }
java mysql plus
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转载自blog.csdn.net/shadowam/article/details/80048304
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