頭部聲明：<beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="      http://www.springframework.org/schema/beans      http://www.springframework.org/schema/beans/spring-beans-4.2.xsd      http://www.springframework.org/schema/util      http://www.springframework.org/schema/util/spring-util-4.2.xsd      http://www.springframework.org/schema/context       http://www.springframework.org/schema/context/spring-context-4.2.xsd      http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">配置：<mvc:cors>    <mvc:mapping path="/api/v1/**"        allowed-origins="*"        allowed-methods="POST, GET, OPTIONS, DELETE, PUT"        allowed-headers="Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With"        allow-credentials="true" /></mvc:cors>報(bào)錯(cuò)：嚴(yán)重: StandardWrapper.Throwable