jsp+mysql 在 preparedStatement中 中文乱码解决

直接上代码：

System.out.println(username+password);
String sql = "select * from user where name =? and password  =?";
preparedStatement = connection.prepareStatement(sql);
preparedStatement.setString(1,"中文乱码");
preparedStatement.setString(2,password);
System.out.println(preparedStatement.toString());

这样在后台输出sql语句是：com.mysql.jdbc.JDBC4PreparedStatement@5009ea: select * from user where name ='??' and password ='123'

中文是？？。

解决方法：原因是设置datasource 的driver 时jdbc.url=jdbc:mysql://localhost:3306/shoppiong 没有指定编码

改成：

private final static String URL = "jdbc:mysql://localhost/shoppingstyle=?characterEncoding=utf8";

这样在重新运行程序，后台输出sql语句为：com.mysql.jdbc.JDBC4PreparedStatement@c07125: select * from user where name ='张山' and password ='123'

解决了乱码问题