﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>BlogJava-Salomon's Java Castle-随笔分类-Jasper Report, etc</title><link>http://www.blogjava.net/leslie/category/1858.html</link><description>Not ready yet</description><language>zh-cn</language><lastBuildDate>Fri, 02 Mar 2007 20:18:54 GMT</lastBuildDate><pubDate>Fri, 02 Mar 2007 20:18:54 GMT</pubDate><ttl>60</ttl><item><title>JasperReports的一堆毛病</title><link>http://www.blogjava.net/Leslie/archive/2005/06/26/6717.html</link><dc:creator>Salomon</dc:creator><author>Salomon</author><pubDate>Sun, 26 Jun 2005 04:34:00 GMT</pubDate><guid>http://www.blogjava.net/Leslie/archive/2005/06/26/6717.html</guid><wfw:comment>http://www.blogjava.net/Leslie/comments/6717.html</wfw:comment><comments>http://www.blogjava.net/Leslie/archive/2005/06/26/6717.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.blogjava.net/Leslie/comments/commentRss/6717.html</wfw:commentRss><trackback:ping>http://www.blogjava.net/Leslie/services/trackbacks/6717.html</trackback:ping><description><![CDATA[<P>1. 特殊字符时候产生Java source code的错误。<BR>看了下源代码，发现写文件用的就是FileWriter.write(String content)，我改了下，用stream去做<BR><BR>2. jvm crash<BR>其实这个是jdk1.3-1.4 GC的毛病拉，我不知道在5里面有没有fix<BR>只好改jasper reports的代码，把生成的java class用static 的ThreadLocal给reference住。<BR>这个毛病在JasperReports新版本里面已经fix了，因为项目里不能随意换版本所以算了。<BR><BR>3. Performance!<BR>8000 Rows X 100 Columns<BR>JasperReports居然用了10分钟才fill和export出来，慢到出奇阿！<BR>还没时间看那里出的问题，只是自己写了个简单的engine来替代。回头debug进去，或者用Jprofiler看看内存情况。。。真是shit<BR><BR>另外，没有java doc，文档不全，code也多有不好的，comments非常差<BR><BR>简单的说，不要钱的东西的确是差了点</P><img src ="http://www.blogjava.net/Leslie/aggbug/6717.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.blogjava.net/Leslie/" target="_blank">Salomon</a> 2005-06-26 12:34 <a href="http://www.blogjava.net/Leslie/archive/2005/06/26/6717.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>