在实际应用<em>开发</em>或者是产品部署的时候，对应着两种<em>模式</em>：
① <em>开发</em><em>模式</em>（<em>devMode</em>）；此时 DevMode=ture；
② 产品<em>模式</em>(proMode)；此时 DevMode=<em>false</em>；
在<em>struts</em>.properties或者<em>struts</em>.xml中有<em>devMode</em>的配置，在<em>devMode</em>被激活的<em>模式</em>下，能够明显的提高<em>开发</em>效率，它会提供更多的日志或着debug信息。当然
Struts Problem ReportStruts has detected an unhandled exception:Messages: com.mysql.jdbc.DriverCannot load JDBC driver class 'com.mysql.jdbc.Driver'Hibernate operation: Cannot open connection; uncategorizedSQLExcep
FirstAction
public class FirstAction extends ActionSupport {
public UserInfo userInfo=new UserInfo();
/*public UserInfo getUserInfo() {
return userInfo;
}
public void set
In Struts <em>2</em> development, this should be the first configurable value to learn. To enable the Struts <em>2</em> development mode, you can significantly increase your Struts <em>2</em> development speed by giving auto con
<em>devMode</em><em>模式</em>是<em>开发</em><em>模式</em>，开启它则默认开启了i18n.reload、configuration.xml.reload。
### when set to true, Struts will act much more friendly for developers. This
### includes:
### - <em>struts</em>.i18n.reload = true
### - <em>struts</em>.c
在网上学习尚学堂Struts<em>2</em>的过程中，遇到了这个<em>问题</em>，当在配置Struts.xml中，启动tomcat的时候报了一个这样的错误严重: Exception starting filter <em>struts</em><em>2</em>java.lang.NullPointerException at com.opensymphony.xwork<em>2</em>.util.FileManager$FileRevision.needsReloading(FileManager.java:<em>2</em>09) at com.opensympho
