token工具类
public class TokenInterceptor extends HandlerInterceptorAdapter { private static final Logger LOG = Logger.getLogger(Token.class); @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { if (handler instanceof HandlerMethod) { HandlerMethod handlerMethod = (HandlerMethod) handler; Method method = handlerMethod.getMethod(); Token annotation = method.getAnnotation(Token.class); if (annotation != null) { String key = annotation.key(); boolean needSaveSession = annotation.save(); if (needSaveSession) { request.getSession(true).setAttribute("token" + key, UUID.randomUUID().toString()); } boolean needRemoveSession = annotation.remove(); if (needRemoveSession) { if (isRepeatSubmit(request, key)) { LOG.warn("please don't repeat submit,url:" + request.getServletPath()); return false; } request.getSession(true).removeAttribute("token" + key); } } return true; } else { return super.preHandle(request, response, handler); } } private boolean isRepeatSubmit(HttpServletRequest request, String key) { String serverToken = (String) request.getSession(true).getAttribute("token" + key); if (serverToken == null) { return true; } String clinetToken = request.getParameter("token" + key); if (clinetToken == null) { return true; } if (!serverToken.equals(clinetToken)) { return true; } return false; } } token实现
@Target(ElementType.METHOD) @Retention(RetentionPolicy.RUNTIME) public @interface Token { boolean save() default false; String key() default ""; boolean remove() default false; }
controller：
@Token(save=true,key="1") //进入页面时 @Token(remove=true,key="1") //提交表单时 jsp：
<input type="hidden" id="token" value="${token1 }"/>js：
$.ajax请求时 data:{ "token1":$('#token').val() }, 不同的提交给不同的key，避免多个提交时session里的uid相同的情况，没有嵌套提交的情况时不给key即可，后台根据uid判断是否重复提交，进行拦截，建议配合js里的处理，避免多次弹窗提示。
