logback show logs with line number

Question

I want to write log like:

2014-04-17 11:00:16.408 [http-apr-9090-exec-4] DEBUG package.method(line) - log.

so I config the logback.xml, in the pattern, the config like:

%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36}.%M(%line) - %msg%n

Every thing shows ok except the line number, and if i add set like

%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36}.%M %line - %msg%n

Then all works. so there must be something wrong with my configuration.
Could anyone help me ? Thanks. I want to display like what I want, and no space between method name and line number.

Answer 1

The Logback manual states

In PatternLayout, parenthesis can be used to group conversion patterns. It follows that the '(' and ')' carry special meaning and need to be escaped if intended to be used as literals. The special nature of parenthesis is further explained below.

[...]

If you need to treat the parenthesis character as a literal, it needs to be escaped by preceding each parenthesis with a backslash. As in, \(%d{HH:mm:ss.SSS} [%thread]\).

You'll need to escape the parenthesis with a \.

%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36}.%M\(%line\) - %msg%n