java - 如何在preparedstatement中使用JDBC通配符创建mysql表

Question

    String sql2 = "create table ? ( id int not null auto_increment, fullname
    varchar(30) not null, primary key (id) )";

    PreparedStatement stmt2 = conn.prepareStatement(sql2);

    stmt2.setString(1, username);

    stmt2.execute();

    stmt2.close();

从上面的语句中，我收到错误消息(“john”作为表名):

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error    
in your SQL syntax; check the manual that corresponds to your MySQL server 
version for the right syntax to use near ''john' ( id int not null 
auto_increment, fullname varchar(30) not null, primary ' at line 1

eclipse 说错误在这一行:

stmt2.execute();

请帮助大家...tq

Answer 1

不能在 CREATE TABLE 语句中使用表名参数。

而是简单地使用变量构建 SQL 字符串:

String sql2 = "create table " + username + " ( id int not null auto_increment, fullname
varchar(30) not null, primary key (id) )";

Statement stmt2 = conn.createStatement();
stmt2.executeUpdate(sql2);