java的密码确定
package cn.edu.hbue.ghp;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
public class tainjia {
public static void main(String[] args) {
// TODO Auto-generated method stub
java.sql.Connection connection = null;
PreparedStatement preStmt = null;
try{
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/grade?user=root&"+"password=ghp";
connection = DriverManager.getConnection(url);
if(connection != null){
System.out.println("连接成功");
}
String sql = "insert into book(author,publisher,isbn,pubDate,price,categoryId)"+"values(?,?,?,?,?,?)";
preStmt = connection.prepareStatement(sql);
preStmt.setString(1, "EDA技术");
preStmt.setString(2, "清华大学");
preStmt.setString(3, "1");
preStmt.setString(4, "2017-1-1");
preStmt.setDouble(5, 66);
preStmt.setInt(6, 2);
preStmt.executeUpdate();
preStmt.setString(1, "你要去相信，没有到不了的明天");
preStmt.setString(2, "湖南出版时");
preStmt.setString(3, "2");
preStmt.setString(4, "2014-11-13");
preStmt.setDouble(5, 32.8);
preStmt.setInt(6, 1);
preStmt.executeUpdate();
System.out.println("添加数据的行为数为"+preStmt.getUpdateCount());
}catch(ClassNotFoundException e){
System.out.println("JDBC driver error");
}catch(SQLException e){
System.out.println("JDBC operation error");
}finally{
try{
if(preStmt != null){
preStmt.close();
}
}catch(SQLException e){
System.out.println("PreparedStatement close error");
}
try{
if( connection != null){
connection.close();
}
}catch(SQLException e){
System.out.println("PreparedStatement close error");
}
}
}
}
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