使用@RepeatSubmit 防止重複提交
阿新 • • 發佈:2021-06-18
自定義防止重複提交的註解
@Inherited
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface RepeatSubmit
{
}
防止重複提交的攔截器
@Component public abstract class RepeatSubmitInterceptor extends HandlerInterceptorAdapter { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { if (handler instanceof HandlerMethod) { HandlerMethod handlerMethod = (HandlerMethod) handler; Method method = handlerMethod.getMethod(); RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class); if (annotation != null) { if (this.isRepeatSubmit(request)) { AjaxResult ajaxResult = AjaxResult.error("不允許重複提交,請稍後再試"); ServletUtils.renderString(response, JSON.marshal(ajaxResult)); return false; } } return true; } else { return super.preHandle(request, response, handler); } } /** * 驗證是否重複提交由子類實現具體的防重複提交的規則 * * @param request * @return * @throws Exception */ public abstract boolean isRepeatSubmit(HttpServletRequest request) throws Exception; }
判斷請求url和資料是否和上一次相同,
*如果和上次相同,則是重複提交表單。 有效時間為10秒內
@Component public class SameUrlDataInterceptor extends RepeatSubmitInterceptor { public final String REPEAT_PARAMS = "repeatParams"; public final String REPEAT_TIME = "repeatTime"; public final String SESSION_REPEAT_KEY = "repeatData"; /** * 間隔時間,單位:秒 預設10秒 * * 兩次相同引數的請求,如果間隔時間大於該引數,系統不會認定為重複提交的資料 */ private int intervalTime = 10; public void setIntervalTime(int intervalTime) { this.intervalTime = intervalTime; } @SuppressWarnings("unchecked") @Override public boolean isRepeatSubmit(HttpServletRequest request) throws Exception { // 本次引數及系統時間 String nowParams = JSON.marshal(request.getParameterMap()); Map<String, Object> nowDataMap = new HashMap<String, Object>(); nowDataMap.put(REPEAT_PARAMS, nowParams); nowDataMap.put(REPEAT_TIME, System.currentTimeMillis()); // 請求地址(作為存放session的key值) String url = request.getRequestURI(); HttpSession session = request.getSession(); Object sessionObj = session.getAttribute(SESSION_REPEAT_KEY); if (sessionObj != null) { Map<String, Object> sessionMap = (Map<String, Object>) sessionObj; if (sessionMap.containsKey(url)) { Map<String, Object> preDataMap = (Map<String, Object>) sessionMap.get(url); if (compareParams(nowDataMap, preDataMap) && compareTime(nowDataMap, preDataMap)) { return true; } } } Map<String, Object> sessionMap = new HashMap<String, Object>(); sessionMap.put(url, nowDataMap); session.setAttribute(SESSION_REPEAT_KEY, sessionMap); return false; } /** * 判斷引數是否相同 */ private boolean compareParams(Map<String, Object> nowMap, Map<String, Object> preMap) { String nowParams = (String) nowMap.get(REPEAT_PARAMS); String preParams = (String) preMap.get(REPEAT_PARAMS); return nowParams.equals(preParams); } /** * 判斷兩次間隔時間 */ private boolean compareTime(Map<String, Object> nowMap, Map<String, Object> preMap) { long time1 = (Long) nowMap.get(REPEAT_TIME); long time2 = (Long) preMap.get(REPEAT_TIME); if ((time1 - time2) < (this.intervalTime * 1000)) { return true; } return false; } }
配置攔截重複提交的請求
/**
* 配置攔截重複提交的請求
* @param registry
*/
@Override
public void addInterceptors(InterceptorRegistry registry){
registry.addInterceptor(repeatSubmitInterceptor).addPathPatterns("/**");
}
轉載連結:https://blog.csdn.net/weixin_43978032/article/details/109849067