How to delete empty lines after JSP Compilation

The method for deleting empty lines after JSP compilation is as follows:

1. JSP 2.1 + is supported. The following code is contained in each page to be empty rows:

 
 

  
  
<%@ page trimDirectiveWhitespaces="true" %> 
 
 

The JSP compilation is successfully tested under Tomcat 6.0.14.

2. Support servlet 2.5 +, that is, the XSD version of web. xml is 2.5. Add the following code to web. xml:

 
 

  
  
<jsp-config> 
  
  
<jsp-property-group> 
  
  
<url-pattern>*.jsp</url-pattern> 
  
  
<trim-directive-whitespaces>true</trim-directive-whitespaces> 
  
  
</jsp-property-group> 
  
  
</jsp-config> 
 
 

The JSP compilation is successfully tested under tomcat 6.0.14.

3. Tomcat 5.5.x +. In the Tomcat installation directory/conf/web. xml, find the servlet named "jsp" and add the following code:

 
 

  
  
<init-param> 
  
  
<param-name>trimSpaces</param-name> 
  
  
<param-value>true</param-value> 
  
  
</init-param> 
 
 

I have never tested it, but the help of the web. xml file in tomcat said so.

TrimSpaces shocould white spaces in template text between actions or directives be trimmed? [False]

In actual operations, I added the 5.5 configuration to the page and started tomcat several times repeatedly, but it was still unsuccessful. Then I thought that JSP has been compiled into servlet, so it could not be changed, go to the work directory in tomcat and delete all the JSP-compiled classes. Wow, the whole world is clean and empty lines are successfully deleted.

1. Functions and principles of several encodings in JSP and Servlet
2. Introduction to JSP: several solutions to avoid repeated submission of Form forms
3. Five Aspects to get started with JSP
4. How to Set Up JSP development and running environment
5. Introduction to JSP page Jump and request forwarding