SpringMVC 防止表单重复提交

场景：  用户手速单身一百年（活该单身狗  虽然我也是哈哈）   一秒连续点击提交按钮  导致插入多条数据   。网上找的资料  自己记录一下，勿喷！

一、java代码:

1.新建注解

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Created by 罗鸿强 on 2016/9/10.
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface AvoidDuplicateSubmission {
    boolean needSaveToken() default false;
    boolean needRemoveToken() default false;
}

2.新建拦截器

import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.util.UUID;

/**
 * Created by  LOL   征服之海  7333
 */
public class AvoidDuplicateSubmissionInterceptor extends HandlerInterceptorAdapter{

        @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response,Object handler)throws  Exception{
           /* private static final Logger LOG = Logger.getLogger(AvoidDuplicateSubmission.class);*/
            if (handler instanceof HandlerMethod) {
                HandlerMethod handlerMethod = (HandlerMethod) handler;
                Method method = handlerMethod.getMethod();
                AvoidDuplicateSubmission annotation = method.getAnnotation(AvoidDuplicateSubmission.class);
                if (annotation != null) {
                    boolean needSaveSession = annotation.needSaveToken();
                    if (needSaveSession) {
                        request.getSession(true).setAttribute("token", UUID.randomUUID().toString());
                    }
                    boolean needRemoveSession = annotation.needRemoveToken();
                    if (needRemoveSession) {
                        if (isRepeatSubmit(request)) {
                            /*LOG.warn("please don't repeat submit,url:"+ request.getServletPath());*/
                            return false;
                        }
                        request.getSession(true).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;
          }

}

3.sevlet.xml中配置拦截器

<mvc:interceptors>
    <!-- 配置Token拦截器，防止用户重复提交数据 -->
    <mvc:interceptor>
        <mvc:mapping path="/member/*"/><!--因为跳转数据的时候传TOKEN,提交的时候获取TOKEN 所以我把路径设为/member/*-->
        <bean class="com.tanbao.common.AvoidDuplicateSubmissionInterceptor"/><!--class文件路径改成你自己写得拦截器路径！！ -->
    </mvc:interceptor>
</mvc:interceptors>

4.跳转表单页面的时候加上你刚写好的自定义注解   属性为（needSaveToken=true）

@RequestMapping(value = "/authlist", method = RequestMethod.GET)
@AvoidDuplicateSubmission(needSaveToken =true)
public String authList() {

5.提交的方法也加注解  属性（needRemoveToken=true）

@RequestMapping(value = "/updateUserAuth", method = RequestMethod.POST)
@AvoidDuplicateSubmission(needRemoveToken = true)
public String updateUserAuth(HttpServletRequest request) {

6.表单页面上别忘了加

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

就这么简单。我之前各种JS 防止提交表单未成功。。。。