在MySQL數據庫中存儲歌曲（BLOB支持）

Question

我想在MySQl數據庫中存儲歌曲和歌詞。我用Google搜索的例子如何做到這一點，但沒有help.However，我能夠存儲圖像：

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 

誰能幫助我如何存儲歌曲以實例，以及如何檢索回來？？？

Answer 1

沒有什麼在存儲歌曲不是存儲的圖像不同。你可以添加爲文件名的另一列，你可以做同樣的事情來存儲文件：然後

//.. 
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(); 
//... 

的檢索它：

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(); 
} 

不要忘記異常處理！

編輯：另一個版本使用字節數組： 寫：

//.. 
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(); 
//... 

閱讀：

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(); 
}