陈正的博客

uncaught exception: Invalid Object: Pixel(NaN, NaN)在外网环境下，高德地图报错，放大和缩小地图都报错，而在切换百度地图下正常原因：数据问题，地图的坐标为空时，百度地图有做处理，而高德地图就会报错nvl(longitude_point,0),nvl(latitude_point,0)...

今天用Myeclipse添加Hibernate来操作mysql数据库报了这个异常：log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).log4j:WARN Please initialize the log4j system properly.Hibernate: i...

tomcat 启动报错：Error parsing XPath '/sqlMap/insert'.  Cause: java.util.NoSuchElementException发生这种错误一般是因为SQL写法不合理造成的。如：参数大小写，参数没用#闭合等。...

10-21 01:05:37.121: I/TestRunner(1224): ----- begin exception -----10-21 01:05:37.131: I/TestRunner(1224): android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity ...