Spring mvc防止数据重复提交的方法

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Token {
  boolean save() default false;
  boolean remove() default false;
}

public class TokenInterceptor 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();
      Token annotation = method.getAnnotation(Token.class);
      if (annotation != null) {
        boolean needSaveSession = annotation.save();
        if (needSaveSession) {
          request.getSession(false).setAttribute("token", UUID.randomUUID().toString());
        }
        boolean needRemoveSession = annotation.remove();
        if (needRemoveSession) {
          if (isRepeatSubmit(request)) {
            return false;
          }
          request.getSession(false).removeAttribute("token");
        }
      }
      return true;
    } else {
      return super.preHandle(request, response, handler);
    }
  }

  private boolean isRepeatSubmit(HttpServletRequest request) {
    String serverToken = (String) request.getSession(false).getAttribute("token");
    if (serverToken == null) {
      return true;
    }
    String clinetToken = request.getParameter("token");
    if (clinetToken == null) {
      return true;
    }
    if (!serverToken.equals(clinetToken)) {
      return true;
    }
    return false;
  }
}

<!-- 拦截器配置 -->
  <mvc:interceptors>
    <!-- 配置Token拦截器，防止用户重复提交数据 -->
    <mvc:interceptor>
      <mvc:mapping path="/**"/>
      <bean class="com.storezhang.web.spring.TokenInterceptor"/>
    </mvc:interceptor>
</mvc:interceptors>

<input type="hidden" name="token" value="${token}" />