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