关于POI操作报错：org.apache.poi.util.LittleEndian.getUnsignedByte([BI)I

报错原因：由对org.apache.poi的不同版本的依赖引起的

原来的依赖：（红色原来版本，蓝色改后版本）

    <dependency>    <groupId>commons-io</groupId>    <artifactId>commons-io</artifactId>    <version>2.5</version> </dependency> <dependency>    <groupId>org.apache.poi</groupId>    <artifactId>poi</artifactId>    <version>3.17</version> </dependency> <dependency>    <groupId>org.apache.poi</groupId>    <artifactId>poi-ooxml</artifactId>    <version>3.9</version> </dependency> <dependency>    <groupId>org.apache.poi</groupId>    <artifactId>poi-scratchpad</artifactId>    <version>3.14</version> </dependency> <dependency>    <groupId>fr.opensagres.xdocreport</groupId>    <artifactId>xdocreport</artifactId>    <version>1.0.6</version> </dependency> <dependency>    <groupId>org.apache.poi</groupId>    <artifactId>poi-ooxml-schemas</artifactId>    <version>3.14</version> </dependency> <dependency>    <groupId>org.apache.poi</groupId>    <artifactId>ooxml-schemas</artifactId>    <version>1.3</version> </dependency>

改后的依赖：

<dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.14</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.14</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-scratchpad</artifactId> <version>3.14</version> </dependency> <dependency> <groupId>fr.opensagres.xdocreport</groupId> <artifactId>xdocreport</artifactId> <version>1.0.6</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml-schemas</artifactId> <version>3.14</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>ooxml-schemas</artifactId> <version>1.3</version> </dependency>