/** 针对oracle Blob字段的插入操作 */
@Test
public void testBigBlobWrite() {
PreparedDBUtil dbUtil = new PreparedDBUtil();
TransactionManager tm = new TransactionManager();
try {
// 启动事务
tm.begin();
// 先插入一条记录,blob字段初始化为empty_lob
dbUtil.preparedInsert("insert into test(id,blobname) values(?,?)");
String id = DBUtil.getNextStringPrimaryKey("test");
dbUtil.setString(1, id);
dbUtil.setBlob(2, BLOB.empty_lob()); // 先设置空的blob字段
dbUtil.executePrepared();
// 查找刚才的插入的记录，修改blob字段的值为一个文件
dbUtil = new PreparedDBUtil();
dbUtil.preparedSelect("select blobname from test where id = ?");
dbUtil.setString(1, id);
dbUtil.executePrepared();
BLOB blob = (BLOB) dbUtil.getBlob(0, "blobname");
if (blob != null) {
DBUtil.updateBLOB(blob, new java.io.File("d:/dominspector.rar"));
}
tm.commit();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
try {
tm.rollback();
} catch (RollbackException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
} finally {
tm = null;
dbUtil = null;
}
}
