有没有办法将java.lang.String转换为java.sql.Blob?
请帮助我,这是我的项目要求之一,只需将用户密码作为Blob格式存入数据库(oracle10g)
提前致谢!
答案 0 :(得分:2)
我找到了这个例子。我看到你使用oracle db所以这可能会有所帮助
package mypackage1;
import java.text.*;
import java.sql.*;
import java.util.*;
public class BlobTest
{
public BlobTest()
{ }
public static void main(String[] args)throws SQLException
{
try {
DriverManager.registerDriver (new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:rashmidb", "scott", "tiger");
PreparedStatement ps = conn.prepareStatement("INSERT INTO BLOBTABLE VALUES (?)");
oracle.sql.BLOB myBlob = oracle.sql.BLOB.createTemporary(conn, false, oracle.sql.BLOB.DURATION_SESSION);
String myStr = "To test if the string gets inserted into the blob column";
byte[] buff = myStr.getBytes();
myBlob.putBytes(1,buff);
ps.setBlob(1, myBlob);
int count = ps.executeUpdate();
ps.close();
conn.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
}
如果您使用休眠,请查看this