Oracle存取对象

往数据库里存一个Map：

Map<String, Integer> temp = new HashMap<String, Integer>();
		temp.put("mon", 1);
		temp.put("tus", 1);
		temp.put("wen", 3);
		temp.put("thr", 1);
		temp.put("fri", 1);
		temp.put("sat", 0);
		temp.put("sun", 0);
		try {
			ByteArrayOutputStream bos = new ByteArrayOutputStream();
			ObjectOutputStream out = new ObjectOutputStream(bos);
			out.writeObject(temp);
			final LobHandler lobhander = new DefaultLobHandler();
			final ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
			StringBuffer sql = new StringBuffer("insert into test(testid,name,accrual) values(?, ?, ?)");
			this.getJdbcTemplate().execute(sql.toString(), 
					new AbstractLobCreatingPreparedStatementCallback(lobhander) {
						protected void setValues(PreparedStatement ps,
								LobCreator lobCreator) throws SQLException,
								DataAccessException {
							ps.setInt(1, 1);
							ps.setString(2, "aaa");
							lobCreator.setBlobAsBinaryStream(ps, 3, bis, bis.available());
						}
				
			}
			
			);
		} catch(Exception e) {
			e.printStackTrace();
		}

读取出来：

		final LobHandler lobhander = new DefaultLobHandler();
		this.getJdbcTemplate().query("select * from test", 
				new RowMapper() {
					public Object mapRow(ResultSet rs, int arg1) throws SQLException {
						Map result = new HashMap();
						Blob blob = rs.getBlob("accrual");
						//byte[] bbb = lobhander.getBlobAsBytes(rs, "accrual");
						ByteArrayInputStream bais = new ByteArrayInputStream(blob.getBytes(1, (int)blob.length()));
						try {
							ObjectInputStream oo = new ObjectInputStream(bais);
							HashMap hm = (HashMap)oo.readObject();
						} catch (Exception e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
						return null;
					}
		}
		
		);