参考：

Set it permanently:

- Right click on My Computer

- Go to Advanced tab

- Click on "environment variables" button

- Under system variables, edit "JAVA_HOME", set value to new path

- Close all Command prompt windows - the variable does not update in existing command prompts, only new ones.

 

http://ant.apache.org/manual/install.html

Installing Ant on Windows


  2. Enter the URL: http://ant.apache.org/bindownload.cgi.
  3. On the Apache Ant Project page, find the heading Current Release of Ant .
  4. Select apache-ant-1.6.5-bin.zip [PGP] [SHA1] [MD5]
  5. Click Save to unzip the apache-ant-1.6.5-bin.zip [PGP] [SHA1] [MD5] file and save it to your C:/ directory as ant .
  6. Add the bin directory to your PATH environment variable.
  7. Add the ANT_HOME environment variable set to C:/ant .
  8. Add the ANT_OPTS environment variable set to -Xmx256M .