BLOB类型是mysql数据库常用来存储，但是通过getBlob()方法获取值得时候会报错：
name: user_certify_pic java-type: [B column-type: BLOB
实际上 user_certify_pic 对应的java类型并不是Blob的类型，[B 可以通过getString来获取 java.lang.IllegalArgumentException: Can not set [B field yxm.zyf.love.entity.User.user_certify_pic to com.mysql.jdbc.Blob at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81) at java.lang.reflect.Field.set(Field.java:764) at yxm.zyf.love.utils.JdbcUtils.setValByJavaName(JdbcUtils.java:100) at yxm.zyf.love.utils.JdbcUtils.main(JdbcUtils.java:76)
原文：https://www.cnblogs.com/zyf-yxm/p/10490097.html