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<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean class="com.bitspace.bourse.core.interceptor.NoRepeatInterceptor"></bean>
</mvc:interceptor>
import com.alibaba.fastjson.JSON;
import com.bitspace.bourse.core.annotation.NoRepeatData;
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.HashMap;
import java.util.Map;
public class NoRepeatInterceptor extends HandlerInterceptorAdapter {
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
if (handler instanceof HandlerMethod) {
HandlerMethod handlerMethod = (HandlerMethod) handler;
Method method = handlerMethod.getMethod();
NoRepeatData annotation = method.getAnnotation(NoRepeatData.class);
if (annotation != null) {
if (repeatDataValidator(request)) {//如果重复相同数据
return false;
} else {
return true;
}
}
return true;
} else {
return super.preHandle(request, response, handler);
}
}
public boolean repeatDataValidator(HttpServletRequest httpServletRequest) {
String params = JSON.toJSONString(httpServletRequest.getParameterMap());
String url = httpServletRequest.getRequestURI();
Map<String, String> map = new HashMap<String, String>();
map.put(url, params);
String nowUrlParams = map.toString();
Object preUrlParams = httpServletRequest.getSession().getAttribute("repeatData");
if (preUrlParams == null) {//如果上一个数据为null,表示还没有访问页面
httpServletRequest.getSession().setAttribute("repeatData", nowUrlParams);
return false;
} else {//否则,已经访问过页面
if (preUrlParams.toString().equals(nowUrlParams)) {//如果上次url+数据和本次url+数据相同,则表示城府添加数据
return true;
} else {//如果上次 url+数据 和本次url加数据不同,则不是重复提交
httpServletRequest.getSession().setAttribute("repeatData", nowUrlParams);
return false;
}
}
}
}
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface NoRepeatData {
}
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