这个dopost有问题吗

[Caretaker9]

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		     PrintWriter out = response.getWriter();
		    out.println("测试");
			request.setCharacterEncoding("utf-8");
			String username = request.getParameter("username");
			String password = request.getParameter("password");
			System.out.println("转发！");
			if(username=="Wone"&&password=="690109wwh"){
				System.out.println("正在正确进行重定向");
				response.sendRedirect("/Login2.0/page/suc.jsp");
			}else{
				System.out.println("正在错误进行重定向");
				response.sendRedirect("/Login2.0/page/eor.jsp");
			}

为什么地址栏可以跳转到这个Servlet 却不会进行重定向。也不会向网页写入任何内容。Sys.o也没有出现。错哪里了？