在用jqueryfileupload上传文件时报以下毛病：
java.lang.IllegalStateException: File has been moved - cannot be read again
后台接口是spring mvc, 检查sprnig mvc配置文件：
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize">
<value>102400000</value>
</property>
</bean>
配置了允许上传文件的最大size, 而自己上传的文件大小远远小于这个，甚么情况呢？
经过网上搜索资料，发现spring mvc除maxUploadSize参数，还有1个maxInMemorySize参数，指定允许文件被写入内存的最大szie，则默许为1024字节，即1MB，如果试上传大于1024个字节的文件，你需要增加maxInMemorySize价。
以下:
<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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans⑷.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context⑷.0.xsd">
<!-- 添加拦截器 -->
<bean id="handlerMapping"
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
<property name="interceptors">
<bean class="com.message.web.interceptor.SessionInterceptor" />
</property>
</bean>
<!-- 配置controller扫描 -->
<context:component-scan base-package="com.message.web.controller" />
<!-- 配置springmvc视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass">
<value>org.springframework.web.servlet.view.JstlView</value>
</property>
<property name="prefix">
<value>/message/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<!-- 设置上传文件的最大尺寸为100MB -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize">
<value>102400000</value>
</property>
<property name="maxInMemorySize">
<value>10240000</value>
</property>
</bean>
</beans>