package org.moss.jdj.dbcp;

import java.util.Enumeration;
import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.Name;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.StringRefAddr;

import org.apache.commons.dbcp.BasicDataSourceFactory;
import org.moss.jdj.codec.Base64Coder;

public class EncryptedDataSourceFactory extends BasicDataSourceFactory 
{

    public Object getObjectInstance(Object obj, Name name, Context nameCtx, Hashtable environment)
    throws Exception      
    {
        if (obj instanceof Reference)
        {
            setUsername((Reference)obj);
            setPassword((Reference)obj);        
        }    
        return super.getObjectInstance(obj, name, nameCtx, environment);
    }

    private void setUsername(Reference ref) 
    throws Exception {
        findDecryptAndReplace("username", ref);        
    }
    
    private void setPassword(Reference ref) 
    throws Exception {
        findDecryptAndReplace("password", ref);
    }

    
    private void findDecryptAndReplace(String refType, Reference ref)
    throws Exception {
        int idx = find(refType, ref);
        String decrypted = decrypt(idx, ref);
        replace(idx, refType, decrypted, ref);
    }
    
    private void replace(int idx, String refType, String newValue, Reference ref)
    throws Exception
    {
        ref.remove(idx);
        ref.add(idx, new StringRefAddr(refType, newValue));
    }
    
    private String decrypt(int idx, Reference ref) 
    throws Exception {
        return Base64Coder.decode(
            ref.get(idx).getContent().toString()
        );
    }
    
    private int find(String addrType, Reference ref) 
    throws Exception
    {
        Enumeration enu = ref.getAll();
        for (int i=0; enu.hasMoreElements(); i++) {
            RefAddr addr = (RefAddr)enu.nextElement();
            if (addr.getType().compareTo(addrType) == 0) {
                return i;
            }
        }
        throw new Exception(
            "The \""+addrType+"\" name/value pair was not found"
            + " in the Reference object.  The reference Object is"
            + " " + ref.toString()
        );
    }
     
     
}

------解决方案--------------------
我刚好弄过这个
我这里是ssh的，先用加密算法加密数据库密码，然后再（我那里是spring解析的数据源）继承你解析数据源的spring的那个类，重写一个子类进行解密，把spring配置里面的解析类换成你的这个子类，然后就ok了。