小编Lin*_*123的帖子

我尝试使用带有hibernate3的blob将文件保存到MySQL.但我总是有java.lang.UnsupportedOperationException:Blob可能无法通过创建会话来操作org.hibernate.lob.BlobImpl.excep(BlobImpl.java:127)

这里有一些代码.

package com.uni.domain;

public class File extends Identifier {

    private byte[] data;
    private String contentType;

    public byte[] getData() {
        return data;
    }

    public File() {}

    public void setData(byte[] photo) {
        this.data = photo;
    }

    public boolean isNew() {
        return true;
    }

    public String getContentType() {
        return contentType;
    }

    public void setContentType(String contentType) {
        this.contentType = contentType;
    }
}

package com.uni.domain;

import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.usertype.UserType;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.sql.*;
import java.util.Arrays;

public class PhotoType …