蓝色天空

摘要： 持久类定义字段：private Blob diff;设置要保存的对象:public Blob getBlob(Object o) {ByteArrayOutputStream outs = new ByteArrayOutputStream();try {ObjectOutputStream oos = new ObjectOutputStream(outs);oos.writeObject(o);} catch (IOException e) {throw new RuntimeException(e);}return (Hibernate.createBlob(outs.toByteArr 阅读全文