Java正则表达式

Question

一条sql如下：select * from user where id = #{user.id}
问题：用Java字符串的replaceAll将#{user.id}替换成具体指，但是具体正则表达式怎么写？

Answer 1

sql.replaceAll("\\#\\{.*\\}", "111");

?

Answer 2

If you want to replace sql, just replace it directly. You can do it without regular expression. Normally, the #{user.id} that appears in your sql needs to be replaced with your variable value. If you use regular expression, the performance will be too low.

Answer 3

Just splice it together

"select * from user where id = "+变量