/C:/Program%20Files/Apache%20Software%20Foundation/Tomcat%206.0/webapps
百度了一下/C:/Program%20Files/Apache%20Software%20Foundation/Tomcat%206.0/webapps这个路径里面有%20这个东西造成路径问题，怎么让%20这个还原成空格

[解决办法]
System.out.println(URLDecoder.decode("/C:/Program%20Files/Apache%20Software%20Foundation/Tomcat%206.0/webapps"));