BlogJava-bluepluto-随笔分类-Javahttp://www.blogjava.net/bluepluto/category/4213.htmlzh-cnThu, 01 Mar 2007 02:44:23 GMTThu, 01 Mar 2007 02:44:23 GMT60Some oracle detail...http://www.blogjava.net/bluepluto/archive/2005/11/11/19322.html蓝色的冥王星蓝色的冥王星Fri, 11 Nov 2005 07:46:00 GMThttp://www.blogjava.net/bluepluto/archive/2005/11/11/19322.htmlhttp://www.blogjava.net/bluepluto/comments/19322.htmlhttp://www.blogjava.net/bluepluto/archive/2005/11/11/19322.html#Feedback0http://www.blogjava.net/bluepluto/comments/commentRss/19322.htmlhttp://www.blogjava.net/bluepluto/services/trackbacks/19322.html2.oracle绑定中文时一个中文字符按照3个字节计算,而且字符串最大绑定量为2000字节,串长度小于666的是安全的
      if( str.length() > 2000 || str.getBytes("utf8").length > 2000 )
       mst.setCharacterStream(i+1,new CharArrayReader(str.toCharArray()),str.length());
      else
       mst.setString(i+1,str);
3.修改oracle blob时可以先用 for update 对修改对象加锁再修改，使用时需强制转换为 oracle.sql.BLOB

]]>由(http://blog.csdn.net/treaturebeauty/archive/2005/03/18/323121.aspx)想到的 http://www.blogjava.net/bluepluto/archive/2005/10/27/17092.html蓝色的冥王星蓝色的冥王星Thu, 27 Oct 2005 11:17:00 GMThttp://www.blogjava.net/bluepluto/archive/2005/10/27/17092.htmlhttp://www.blogjava.net/bluepluto/comments/17092.htmlhttp://www.blogjava.net/bluepluto/archive/2005/10/27/17092.html#Feedback0http://www.blogjava.net/bluepluto/comments/commentRss/17092.htmlhttp://www.blogjava.net/bluepluto/services/trackbacks/17092.html由(http://blog.csdn.net/treaturebeauty/archive/2005/03/18/323121.aspx)想到的

(1)在java中所有类都是object的子类,数组也不例外

(2)测试程序:

                  Object[] oObjArray = {"a","b"};

                  Object oObj = oObjArray;    //这句执行没有问题

                   String[] oStrArray = (String[] )oObj;  //不行

(3)测试程序:

                   Object o = new String[]{"a","b","c"};

                   String[] oStrArray = (String[])o; ///Ok



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