如果你在前台传参数,到后台是如下显示的: String str = "select%20xm%20as%20xm%20from%20rkk%20where%201=1%20and%20xm%20like%20('%25%E8%A7%A3%E8%BE%A3%25')%20";   你可以使用API中URLDecoder.decode(str,"UTF-8"); 第一个参数是你传入的字符串