proxool 获取BLOB/CLOB字段

如果是C3P0的话，可以这样：

Method m;

CLOB clob = null;

m = CLOB.class.getMethod("createTemporary", new Class[] { Connection.class, boolean.class, int.class });

Object[] args = new Object[] { C3P0ProxyConnection.RAW_CONNECTION, Boolean.valueOf(true), new Integer(10) };

clob = (CLOB) ((C3P0ProxyConnection) conn).rawConnectionOperation(m, null, args);

如果你项目中有SPRING包的话，可以这样

                      OracleConnection connection;

if (conn instanceof NewProxyConnection) {

C3P0NativeJdbcExtractor snj=new C3P0NativeJdbcExtractor();

connection = (OracleConnection)snj.getNativeConnection(conn);

}else{

Jdbc4NativeJdbcExtractor snj=new Jdbc4NativeJdbcExtractor();

connection = (OracleConnection)snj.getNativeConnection(conn);

}

clob = oracle.sql.CLOB.createTemporary(connection,true,1);

Jdbc4NativeJdbcExtractor  在高版本的SPRING中， 这种写法支持proxool ，

网上99%都不靠谱，特此记录下，解决方法，以备查验.