打包时sun.misc.ServiceConfigurationError
用eclipse打包时，选了runnable jar,然后选Extract required librariaries into generated JAR。
后来运行时就报下面的错误
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sun.misc.ServiceConfigurationError: javax.imageio.spi.ImageInputStreamSpi: Provider com.sun.media.imageioimpl.stream.ChannelImageInputStreamSpi could not be instantiated: java.lang.IllegalArgumentException: vendorName == null!
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解决办法是不要选Extract required librariaries into generated JAR,选第三个
copy required librariaries into a sub-folder next to generated JAR
