在Servlet中，你的数据获取到了，但是中文是“？”，出现一个输出中文乱码的问题,把下面三行代码加上就可以了

protected void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

request.setCharacterEncoding("utf-8");//1

response.setContentType("text/html;charset=utf-8");//2

response.setCharacterEncoding("utf-8"); //3

HandleImpl xm = new HandleImpl();

List list = xm.getStudentes();

JSONArray json=JSONArray.fromObject(list);

PrintWriter out = response.getWriter();

out.println(json);

out.flush();

out.close();

}---------------------本文来自 听雨季节 的CSDN 博客 ，全文地址请点击：https://blog.csdn.net/qq_30072293/article/details/76976130?utm_source=copy