How to automatically enter the password when executing scp in the script

When executing scp in a script, you can automatically enter the password in Perl or other scripts, and the script will be interrupted. How can I avoid being interrupted? SCP can automatically enter the password and the script runs smoothly? I used an sshpass tool. 1.: http://sourceforge.net/projects/sshpass/ 2. install :. /configure make install 3. in order to execute the command cp sshpass/user/bin/4 anywhere. run the following command: sshpass-p $ PASSWD scp-o StrictHostKeyChecking = no $ CMD 'CD $ path & sshpass-p HS ~ U8ro8e scp-o StrictHostKeyChecking = no $ package javadev \ @ 121.199.60.78:/home/javadev/server ';