数据库保存为BLOB字段，将blob转换为list，list转换为blob

package cn.project.model;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.sql.Blob;import java.util.List;import java.util.ArrayList;import org.hibernate.Hibernate;public class ListToBlob {//集合转换public static Blob TOBLOB(Object object)throws IOException{try { ByteArrayOutputStream out = new ByteArrayOutputStream(); ObjectOutputStream outputStream = new ObjectOutputStream(out); outputStream.writeObject(object); byte [] bytes = out.toByteArray(); outputStream.close(); return Hibernate.createBlob(bytes); } catch (Exception e) { // TODO: handle exception System.out.println("ObjectToBlob"); return null ; }}public static List TOLIST(Blob blob)throws IOException{List l = new ArrayList();try { ObjectInputStream in = new ObjectInputStream(blob.getBinaryStream()); l = (List)in.readObject(); in.close(); return l; } catch (Exception e) { // TODO: handle exception System.out.println("BlobToObject"); e.printStackTrace(); return null ; }}}