InputStream String2InputStream(String str)
    {
        ByteArrayInputStream stream = new ByteArrayInputStream(str.getBytes());
        return stream;
    }

------解决方案--------------------
Blob blob=rs.getBlob("CONTENT");
BufferedReader BlobStream = new BufferedReader(Blob.getCharacterStream());
StringBuffer stringBuffer = new StringBuffer();

int nchars = 0;  

char[] buffer = new char[10];
while((nchars = BlobStream.read(buffer)) != -1 )

stringBuffer.append(buffer, 0, nchars);

BlobStream.close();

strDbText = Util.strTrim(stringBuffer.toString());

方法二:
BufferedReader reader = new BufferedReader(Blob.getCharacterStream());

String bb=reader.readLine();

while(bb!=null){

content += bb;

bb = reader.readLine();

}


------解决方案--------------------

在你hibernate的实体bean里的那个String字段上加上一个@Blob注解就行了...