文件上传，java解析excel和csv 转javabean

<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.8</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.8</version> </dependency> <dependency> <groupId>com.opencsv</groupId> <artifactId>opencsv</artifactId> <version>4.3.2</version> </dependency>