mysql 工具类

package JDBC;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Properties;

import com.mysql.jdbc.Statement;

public class 工具类 {
private static String url;
private static String user;
private static String password;
private static String driver;
static {
try {
// 读取资源获取值
Properties pro = new Properties();
// 加载文件
pro.load(new FileReader(“src/db.properties”));
// 获取文件数据
url = pro.getProperty(“url”);
user = pro.getProperty(“user”);
password = pro.getProperty(“password”);
driver = pro.getProperty(“driver”);
// 注册驱动
Class.forName(driver);

} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

public static Connection getConnection() throws SQLException {
return DriverManager.getConnection(url, user, password);
}

public static void close(Statement stmt, Connection conn, ResultSet rs) {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (stmt != null) {
try {
stmt.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

}
}

}