关于mybatis的使用之AJAX操作总结

《一》AJAX实现，对用户名唯一性的检测

?
?
返回的字符串
/** * 验证唯一 */public String onlyUser() {try {HttpServletResponse response = ServletActionContext.getResponse();response.setContentType("text/html;charset=utf-8");PrintWriter out = response.getWriter();System.out.println(username);user = this.userService.getOnlyUser(username);if (user != null) {onlyUserWord = "用户名重复";} else {onlyUserWord = "恭喜你,可以注册";}out.println(onlyUserWord);out.flush();out.close();return "success";} catch (IOException e) {e.printStackTrace();return "nonono";}}
?