【Java开源代码栏目提醒】:以下是网学会员为您推荐的Java开源代码-ConnectDatabase.java,希望本篇文章对您学习有所帮助。
package dataBaseConnection;
import java.sql.*;
public class ConnectDatabase {
private Connection conn = null;
private Statement stmt = null;
public void createConn() {
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/costumemanager?user=root&password=123&useUnicode=true&characterEncoding=gb2312";
if (conn == null) {
try {
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public Connection getConnection() {
if (conn == null) {
createConn();
}
return conn;
}
public void closeConnection() {
if (conn != null) {
try {
conn.close();
conn = null;
} catch (Exception e) {
e.printStackTrace();
}
}
}
public Statement getStatement() throws Exception {
getConnection();
stmt = conn.createStatement();
return stmt;
}
}
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