Java 使用execute方法执行Sql语句

Java 使用execute方法执行Sql语句。

mysql.ini是一个配置文件。配置内容可以看上一篇。

class ExecuteSql {
	private String driver;
	private String url;
	private String user;
	private String pass;
	Connection conn;
	Statement stmt;
	ResultSet rs;
	public void initParam(String paramFile) throws Exception {
		Properties props = new Properties();
		props.load(new FileInputStream(paramFile));
		driver = props.getProperty("driver");
		url = props.getProperty("url");
		user = props.getProperty("user");
		pass = props.getProperty("pass");		
	}
	
	public void executeSql(String sql) throws Exception{
		try {
			Class.forName(driver);
			conn = DriverManager.getConnection(url,user,pass);
			stmt = conn.createStatement();
			boolean hasResultSet = stmt.execute(sql);
			if (hasResultSet) {
				rs = stmt.getResultSet();
				java.sql.ResultSetMetaData rsmd = rs.getMetaData();
				int columnCount = rsmd.getColumnCount();
				
				while (rs.next()) {
					for (int i = 0; i < columnCount; i++) {
						System.out.print(rs.getString(i+1) + "\t");
					}
					System.out.println();
					
				}
			}
			else {
				System.out.println("改SQL语句影响的记录有" + stmt.getUpdateCount() + "条");
			}
		} 
		finally
		{
			if (rs != null) {
				rs.close();
			}
			if (stmt != null) {
				stmt.close();
			}
			if (conn != null) {
				conn.close();
			}
		}
	}
	
	/**
	 * @param args
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub
		
		ExecuteDDL ed = new ExecuteDDL();
		ed.initParam("src/mysql.ini");
	
		ed.executeSql("drop table if exists school"); //(insertSql);	
		ed.executeSql("create table school(id int, name varchar(50), addr varchar(50))");		
		ed.executeSql("insert into school values(1, 'No1', 'BeiJing')");	
		ed.executeSql("select * from school");	
	}
	

}

　　执行结果为：