Struts 2 JSP (155, 69) attribute qualified names must be unique within an element

Today, it is really annoying to refactor a project... Look at the big head, alas .... There was a problem. There was no problem with the local test. An exception occurred when publishing to the remote server, which was very strange.

The environment is as follows:

OS: RHEL 5.2

Web Server (local): tomcat6.0.18

Web Server (remote): tomcat-7.0.21

Exception information:

Exception:

JSP (155, 69) attribute qualified names must be unique within an element

It runs normally in Tomcat 6, but is abnormal in Tomcat 7.

After inspection, we found that:

155 the line code is as follows:

<S: Select label = "location_name" name = "location_name" id = "location_name" id = "location_name ".....

Solution:

Two Duplicate IDs, cups, and duplicates are deleted and re-released. Everything works normally.

Really careless coder, alas... It took me half an hour to solve this problem. Cup!