【Java】关于ajax的session过期跳转登录

1.Xml配置

 <http use-expressions="true" entry-point-ref="authenticationProcessingFilterEntryPoint" >    <beans:bean id="authenticationProcessingFilterEntryPoint" class="com.huazhu.hmall.security.MyAuthenticationProcessingFilterEntryPoint" >        <beans:property name="loginFormUrl" value="/login"></beans:property>   登录URL    </beans:bean>

2.过滤器配置

public class MyAuthenticationProcessingFilterEntryPoint extends LoginUrlAuthenticationEntryPoint {    @Override    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {        HttpServletRequest httpRequest = (HttpServletRequest) request;        if ("XMLHttpRequest".equals(httpRequest.getHeader("X-Requested-With"))) {            response.setCharacterEncoding("UTF-8");            response.getWriter().write("notLogin");//返回文字或Header头中加入状态            response.getWriter().flush();        } else {            super.commence(request, response, authException);        }    }}

3.页面ajax配置

//全局的ajax访问,设置$(function(){    $.ajaxSettings.complete = function(xhr,status){        if (xhr.responseText == 'notLogin') {            window.location = basePath + "/login";        }    }});