原创：响应头(response)和和请求头(request)的值实现，为学习token打基础

@Controller
@RequestMapping(value = "/user")
public class UserController {
    private static final transient Logger log = LoggerFactory.getLogger(UserController.class);


    /**
     * 测试得到请求token
     * @param mv
     * @return
     */
    @RequestMapping(value = "/getToken")
    public ModelAndView getToken(HttpServletResponse response, HttpServletRequest request, ModelAndView mv){
        log.info("测试得到token");
        //写入响应头，键值对。名称可以自己定义
        response.addHeader("ResponseToken","ResponseTokenValue");
        //接收请求头,键值对，并把接收参数的值传递给变量RequestToken
        String RequestToken=request.getHeader("RequestToken");
        System.out.println("得到RequestToken的值为:"+RequestToken);
  

        mv.setViewName("/user/getToken");
        return mv;
    }
}

<script>
    $(document).ready(function(){
        $("#button").click(function(){
            alert("点击到了我");
            // 通过Jquary的ajax来填充装请求头
          
            $.ajax({
                headers: {
                   //键值对，多个键值之间需要用逗号“,”隔开
                    "RequestToken":"RequestTokenValue"
                },
                url:"http://localhost:8080/shiro_manager/user/getToken",
                type: "get",
                contentType: "application/json",
                dataType: ‘json‘,
                cache: false,
                async: true,
               
            });

        });
    });
</script>
<p id="button" style="color:red;">点击查看token</p>
<div id="result"></div>