有关Ajax 中文乱码问题
1.前台传值乱码
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?? 前台JavaScript转码：
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... var url = "reg?userid=" + str; url = encodeURI(url); url = encodeURI(url); ...
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?? 后台解码：
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... String userId = request.getParameter("userid"); userId = java.net.URLDecoder.decode(id,"UTF-8"); ...?
??? 前台2次转码，后台一次
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2.后台传值乱码
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... response.setCharacterEncoding("UTF-8");PrintWriter out = response.getWriter();...?
??? 转码必须放在前面