Java Blob类型和String类型相互转换

1、String 转 Blob:

    String content = "Hello World!";

    Blob blob = Hibernate.createBlob(content.getBytes());

2、Blob 转 String:

    Blob blob;

    try{
         String content = new String(blob.getBytes((long)1, (int)blob.length()));
    } catch(SQLException e) {
         e.printStackTrace();
    }