今天cms系统中出现上传文件失败，报了这样的一个错：
javax.imageio.IIOException: Unsupported Image Type
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(Unknown Source)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(Unknown Source)
at javax.imageio.ImageIO.read(Unknown Source)
at javax.imageio.ImageIO.read(Unknown Source)
at com.alipay.ecmng.impl.UploadFileManagerImpl.saveFile(UploadFileManagerImpl.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.alipay.sofa.service.binding.JVMBindingAdapter$JVMServiceInvoker.doInvoke(JVMBindingAdapter.java:69)
at com.alipay.sofa.service.model.ServiceProxy.invoke(ServiceProxy.java:35)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy46.saveFile(Unknown Source)
at com.alipay.ecmng.web.home.FileJsonController.doPost(FileJsonController.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
解决办法：把图片的模式用ps从CMYK转为RGB即可.
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