怎么将byte[]对象转换为CLob对象存进数据库CLOB字段中？求java原生写法！！！

InputStream ins = file.getInputStream();
byte[] bytes = readInputStream(ins);
Clob clob=？？？

            //贴入readInputStream方法
            private static byte[] readInputStream(InputStream inputStream)
        throws IOException {
    byte[] buffer = new byte[1024];
    int len = 0;
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    while ((len = inputStream.read(buffer)) != -1) {
        bos.write(buffer, 0, len);
    }
    bos.close();
    return bos.toByteArray();
}

oracle.sql.CLOB clob = (oracle.sql.CLOB) rs.getClob("CLOBATTR");
outStream = clob.getCharacterOutputStream();
//data是传入的字符串，定义：String data
char[] c = data.toCharArray();
outStream.write(c, 0, c.length);
}
outStream.flush();
outStream.close();
con.commit();
con.close();

需要把String类型数据转换成Reader，然后再使用setCharacterStream插入数据库中

Java对Oracle中Clob数据类型是不能够直接插入的，但是可以通过流的形式对clob类型数据写入或者读取，网上代码并不算特别多，讲的也不是很清楚，我对网上资料进行了整理和总结，具体看代码：
写入clob数据
import java.io.Writer;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class TestClobIn {
public static void main(String args[]){
String data="this is a long passage！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！";
Writer outStream = null;
//通过JDBC获得数据库连接
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ewins", "scott", "tiger");
con.setAutoCommit(false);
Statement st = con.createStatement();
//插入一个空对象empty_clob()，这个是必须的
st.executeUpdate("insert into TESTCLOB(ID, NAME, CLOBATTR)values(2,'thename', empty_clob())");
//锁定数据行进行更新，注意“for update”语句,这里不用for update锁定不可以插入clob
ResultSet rs = st.executeQuery("select CLOBATTR from TESTCLOB where ID=1 for update");
if (rs.next())
{
//得到java.sql.Clob对象后强制转换为oracle.sql.CLOB
oracle.sql.CLOB clob = (oracle.sql.CLOB) rs.getClob("CLOBATTR");
outStream = clob.getCharacterOutputStream();
//data是传入的字符串，定义：String data
char[] c = data.toCharArray();
outStream.write(c, 0, c.length);
}
outStream.flush();
outStream.close();
con.commit();
con.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
读取clob数据
import java.io.InputStream;
import java.io.Reader;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;

public class TestClobOut {
public static void main(String args[]){
String data;
Reader inStream=null;
//获得数据库连接
Connection con = ConnectionFactory.getConnection();//ConnectionFactory类是另外定义的，不必纠结
con.setAutoCommit(false);
Statement st = con.createStatement();
//不需要“for update”
ResultSet rs = st.executeQuery("select CLOBATTR from TESTCLOB where ID=1");
if (rs.next())
{
java.sql.Clob clob = rs.getClob("CLOBATTR");
inStream = clob.getCharacterStream();
char[] c = new char[(int) clob.length()];
inStream.read(c);
//data是读出并需要返回的数据，类型是String
data = new String(c);
inStream.close();
}
inStream.close();
con.commit();
con.close();
}
}