HttpServletResponse 写入返回数据

HttpServletResponse可以使用resp.getWriter()方法获取PrintWriter对象，通过该对象可以向响应中写入返回数据。例如，在后端代码中，可以使用resp.getWriter().write()方法将数据写入响应中。这样可以将指定的数据作为响应返回给客户端。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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