项目中怎样deprecate整个java 包

You could use sed to mark all classes in the current directory and below (tested in Cygwin). Navigate to the desired folder and run:
for file in $(find . -name *.java); do sed -i 's/\(public class\)/@Deprecated\n\1/g' $file; done
To also mark interfaces just add it like this:
for file in $(find . -name *.java); do sed -i 's/\(\(public class\|interface\)\)/@Deprecated\n\1/g' $file; done
EDIT
you can do this in Eclipse with the Search/Replace tool. Just mark the resources where you want to perform the operations, then press Ctrl + h. Fill it out like this:

Then, press Replace, and fill it out like this: