how to replace a string/word in a text file in groovy

Question

Hello I am using groovy 2.1.5 and I have to write a code which show the contens/files of a directory with a given path then it makes a backup of the file and replace a word/

Answer 1

I use this code to replace port 8080 to ${port.http} directly in certain file:

    def file = new File('deploy/tomcat/conf/server.xml')
    def newConfig = file.text.replace('8080', '${port.http}')
    file.text = newConfig

The first string reads a line of the file into variable. The second string performs a replace. The third string writes a variable into file.