98 lines
3.2 KiB
Java
98 lines
3.2 KiB
Java
package pw.yumc.YumCore.sql.core;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.SQLException;
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import java.util.Properties;
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import org.bukkit.configuration.ConfigurationSection;
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/**
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* 数据库操作类
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*
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* @since 2015年12月14日 下午1:26:39
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* @author 喵♂呜
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*/
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public class MySQLCore extends DataBaseCore {
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private static String driverName = "com.mysql.jdbc.Driver";
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private Connection connection;
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private Properties info;
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private String url;
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/**
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* 初始化连接信息
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*
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* @param cfg
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* 配置节点
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*/
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public MySQLCore(ConfigurationSection cfg) {
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this(cfg.getString("ip", "127.0.0.1"), cfg.getInt("port", 3306), cfg.getString("database", "minecraft"), cfg.getString("username", "root"), cfg.getString("password", ""));
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}
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/**
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* 初始化连接信息
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*
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* @param host
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* 域名
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* @param port
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* 端口
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* @param dbname
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* 数据库
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* @param username
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* 用户名
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* @param password
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* 密码
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*/
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public MySQLCore(String host, int port, String dbname, String username, String password) {
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this.info = new Properties();
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this.info.put("autoReconnect", "true");
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this.info.put("user", username);
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this.info.put("password", password);
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this.info.put("useUnicode", "true");
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this.info.put("characterEncoding", "utf8");
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this.info.put("useSSL", "false");
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this.url = "jdbc:mysql://" + host + ":" + port + "/" + dbname + "";
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try {
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Class.forName(driverName).newInstance();
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} catch (Exception e) {
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warn("数据库初始化失败 请检查驱动 " + driverName + " 是否存在!");
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}
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}
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/**
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* 创建数据表
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*
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* @param tableName
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* 表名
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* @param fields
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* 字段参数
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* @param Conditions
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* -附加值
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* @return 运行结果
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* @throws SQLException
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* SQL异常
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*/
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@Override
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public boolean createTables(String tableName, KeyValue fields, String Conditions) throws SQLException {
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String sql = "CREATE TABLE IF NOT EXISTS `%s` ( %s %s ) ENGINE = InnoDB DEFAULT CHARSET=UTF8";
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return execute(String.format(sql, tableName, fields.toCreateString(), Conditions == null ? "" : ", " + Conditions));
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}
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@Override
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public Connection getConnection() {
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try {
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if (this.connection != null && !this.connection.isClosed()) {
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return this.connection;
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}
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this.connection = DriverManager.getConnection(this.url, this.info);
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return this.connection;
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} catch (SQLException e) {
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warn("数据库操作出错: " + e.getMessage());// 得到出错信息
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warn("登录URL: " + this.url); // 发生错误时，将连接数据库信息打印出来
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warn("登录账户: " + this.info.getProperty("user"));
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warn("登录密码: " + this.info.getProperty("password"));
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return null;
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}
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}
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}
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