| 发表于:2007-03-21 02:09:52 楼主 |
connection con = null; statement stmt = null; resultset rs = null; try { con = db.getconnection(); stmt =con.createstatement(resultset.type_scroll_insensitive,resultset.concur_read_only); rs = stmt.EXECutequery(sql); cachedrowsetimpl crs = new cachedrowsetimpl(); crs.populate(rs); return crs; } catch (exception e) { e.printstacktrace(); return null; } cachedrowsetimpl crs = new cachedrowsetimpl(); 在这里一直都会报异常: java.lang.nullpointerexception at java.io.reader. <init> (reader.java:61) at java.io.inputstreamreader. <init> (inputstreamreader.java:80) at java.util.properties.load(properties.java:266) at javax.sql.rowset.spi.syncfactory.initmapifnecessary(syncfactory.java:371) at javax.sql.rowset.spi.syncfactory.getinstance(syncfactory.java:557) at com.sun.rowset.cachedrowsetimpl. <init> (unknown source) at com.kehang.db.db.EXECquery(db.java:74) 上网查了半天,据说是在读取其中一个properties文件时会出问题,下载了最新版本,也按照网上的帖子修改了这个properties文件的文件名,为什么还是会这么报呢?请问有谁用过这个玩意或者遇到过的来帮忙呀,谢谢了!! |
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