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通用的解决方案

第一种方式:

String userName = request.getParameter("userName") ;byte[] bytes = userName.getBytes("iso8859-1");userName = new String(bytes , "UTF-8") ;System.out.println(request.getMethod()+userName);

 

第二种方式:

request.setCharacterEncoding("UTF-8") ;String userName = request.getParameter("userName") ;System.out.println(userName);

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POST请求的乱码