Servlet response to the client's method

Data is written to the standard output stream.

			PrintWriter out = response.getWriter();
			out.print("adc");
			out.append("cde");
			out.write("ef");

Solve the garbage problem in response to client

It must be set in front of the PrintWriter.

			response.setContentType("text/html;charset=utf-8");
			PrintWriter out = response.getWriter();
			out.print("adc");
			out.append("六七星");
			out.write("ef");