在MySQL数据库中存储歌曲（BLOB支持）

Question

我想在MySQl数据库中存储歌曲和歌词。我用Google搜索的例子如何做到这一点，但没有help.However，我能够存储图像：

con = DriverManager.getConnection(connectionURL, "root", ""); 
PreparedStatement ps = con.prepareStatement("INSERT INTO image VALUES(?,?)"); 
File file = new File("E://guitar.gif"); 
FileInputStream fs = new FileInputStream(file); 
ps.setInt(1,id); 
ps.setBinaryStream(2,fs,fs.available()); 
int i = ps.executeUpdate(); 
ps.close(); 
con.close(); 
//rest code 

谁能帮助我如何存储歌曲以实例，以及如何检索回来？？？

Answer 1

没有什么在存储歌曲不是存储的图像不同。你可以添加为文件名的另一列，你可以做同样的事情来存储文件：然后

//.. 
PreparedStatement ps = con.prepareStatement("INSERT INTO data_table VALUES(?, ?, ?)"); 
//... 
ps.setInt(1,id); 
ps.setString(2, file.getName()); 
ps.setBinaryStream(3, fs,fs.available()); 
int i = ps.executeUpdate(); 
//... 

的检索它：

PreparedStatement ps = con.prepareStatement("SELECT file_name, content from data_table where *some condition*"); 
ResultSet rs = ps.executeQuery(); 
while(rs.hasNext) { 
    rs.next(); 
    String fileName = rs.getString("file_name"); 
    Blob blob = rs.getBlob("content"); 
    byte[] content = blob.getBytes(1, (int) blob.length()); 
    //now content contains the data, you ca store it in a file if you need 
    OutputStream os = new FileOutputStream(new File("d:/test/" + fileName)); 
    os.write(content); 
    os.close(); 
} 

不要忘记异常处理！

编辑：另一个版本使用字节数组： 写：

//.. 
PreparedStatement ps = con.prepareStatement("INSERT INTO data_table VALUES(?, ?, ?)"); 
//... 
byte[] content = new byte[fs.available()]; 
ps.setInt(1,id); 
ps.setString(2, file.getName()); 
ps.setBytes(3, content); 
int i = ps.executeUpdate(); 
//... 

阅读：

PreparedStatement ps = con.prepareStatement("SELECT file_name, content from data_table where *some condition*"); 
ResultSet rs = ps.executeQuery(); 
while(rs.hasNext) { 
    rs.next(); 
    String fileName = rs.getString("file_name"); 
    byte[] content = rs.getBytes("content"); 
    //now content contains the data, you ca store it in a file if you need 
    OutputStream os = new FileOutputStream(new File("d:/test/" + fileName)); 
    os.write(content); 
    os.close(); 
}