java 如何读写sql server的text字段

[wafer_w]

我用setString当遇到大字符串时提示
[Fri Feb 13 14:29:09 CST 2004] error: Error in DocumentDAO.insert():[Microsoft][SQLServer 2000 Driver for JDBC]Invalid parameter binding(s). : java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Invalid parameter binding(s).
at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.base.BasePreparedStatement.validateParameters(Unknown Source)
at com.microsoft.jdbc.base.BasePreparedStatement.validateParameters(Unknown Source)
at com.microsoft.jdbc.base.BasePreparedStatement.preImplExecute(Unknown Source)
at com.microsoft.jdbc.base.BaseStatement.commonExecute(Unknown Source)
at com.microsoft.jdbc.base.BaseStatement.executeInternal(Unknown Source)
at com.microsoft.jdbc.base.BasePreparedStatement.execute(Unknown Source)
at gov.qygs.website.dao.DocumentDAO.insert(DocumentDAO.java:332)
at gov.qygs.website.util.readdb.writerecords(readdb.java:56)
at gov.qygs.website.util.readdb.main(readdb.java:68)