页面之间传递和接收显示中文参数

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比如说 用户名为 “ 好好学习 ”

在传递之前使用 URLEncoder.encoder() 编码后再传递

String username = URLEncoder.encode (“ 好好学习 ”) ;

接收显示时

String username = URLDecoder.decoder( new String( request.getParameter("username").getBytes("iso8859-1") , "utf-8" ) , "utf-8" )

分开就是：

1 通过使用指定的 charset （ tomcat 默认的是 iso8859-1 ）解码指定的 byte 数组，构造一个新的 String

String strBytes = request.getParameter( "username" ).getBytes( "iso8859-1" ) ;

2 通过使用指定的 charset 解码指定的 byte 数组，构造一个新的 String

String utfStr = new String(strBytes, "utf-8" ) ;

3 使用指定的编码机制对字符串解码

Strign username = URLDecoder.decode (utfStr, "utf-8" ) ;