@RequestMapping({"/connect"})
@ResponseBody
public ResultBean connect(@RequestBody JdbcBean jdbcBean) {
    try {
        return new ResultBean(1, String.join(",", this.datasourceServiceImpl.testDatasourceConnectionAble(jdbcBean)));
    } catch (Exception var3) {
        return new ResultBean(0, "连接失败");
    }
}

public String[] testDatasourceConnectionAble(JdbcBean jdbcBean) throws ClassNotFoundException, SQLException {
    DatasourceLoadConfig var10000 = this.datasourceLoadConfig;
    Map<String, String> config = DatasourceLoadConfig.getConfig();
    switch (jdbcBean.getType()) {
        case 1:
            Class.forName((String)config.get("JDBC-MYSQL"));
            MysqlDatasourceConnector mysqlDatasourceConnector = new MysqlDatasourceConnector(DriverManager.getConnection(jdbcBean.getUrl()));
            if (jdbcBean.getTableName() != null) {
                return mysqlDatasourceConnector.getTableContent(jdbcBean.getTableName());
            }

            return mysqlDatasourceConnector.getTables();
        case 2:
            Class.forName((String)config.get("JDBC-POSTGRES"));
            PostgresDatasourceConnector postgresDatasourceConnector = new PostgresDatasourceConnector(DriverManager.getConnection(jdbcBean.getUrl()));
            if (jdbcBean.getTableName() != null) {
                return postgresDatasourceConnector.getTableContent(jdbcBean.getTableName());
            }

            return postgresDatasourceConnector.getTables();
        case 3:
            SqliteDatasourceConnector sqliteDatasourceConnector = new SqliteDatasourceConnector(jdbcBean.getUrl());
            if (jdbcBean.getTableName() != null) {
                return sqliteDatasourceConnector.getTableContent(jdbcBean.getTableName());
            }

            return sqliteDatasourceConnector.getTables();
        case 4:
            Class.forName((String)config.get("JDBC-SQLITE"));
            return new String[]{""};
        default:
            return new String[]{""};
    }
}

public String[] getTableContent(String tableName) {
    String sql = "select * from " + tableName;

    try {
        // 创建了一个Statement对象，Statement是JDBC API中用于执行SQL语句和查询数据库的一个类
        Statement statement = this.connection.createStatement();
        Throwable var4 = null;

        try {
            // 执行SQL查询
            ResultSet resultSet = statement.executeQuery(sql);
            Throwable var6 = null;

            // ...
        } // catch
        // ...
    } // catch
    
    return new String[0];
}