servletconfig

1， 在 Servlet 的配置文件中，可以使用一个或多个 <init-param> 标签为 servlet 配置一些初始化参数。 当 servlet 配置了初始化参数后， web 容器在创建 servlet 实例对象时，会自动将这些初始化参数封装到 ServletConfig 对象中，并在调用 servlet 的 init 方法时，将 ServletConfig 对象传递给 servlet 。进而，程序员通过 ServletConfig 对象就可以得到当前 servlet 的初始化参数信息 。 代码：(为servlet配置初始化参数) <servlet> <servlet-name>ServletDemo8</servlet-name> <servlet-class>cn.yujian.ServletDemo8</servlet-class> <init-param> <param-name>name</param-name> <param-value>xxxx</param-value> </init-param> <init-param> <param-name>charset</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>url</param-name

Servlet的API有很多，这里只谈谈两个Servlet对象：ServletConfig对象和ServletContext对象。 1. ServletConfig对象 在Servlet的配置文件中，可以使用一个或多个<init-param>标签为servlet配置一些初始化参数，当Servlet配置了初始化参数后，web容器在创建servlet实例对象时，会自动将这些参数封装到ServletConfig对象中，并在调用Servlet的init方法时，将ServletConfig对象传递给Servlet。进而，程序员通过ServletConfig对象就可以得到当前Servlet的初始化参数信息。该对象的getInitParameter(String name)用来获得指定参数名的参数值，getInitParameterNames()用来获得所有参数名，我们测试一下： 在test工程的src下新建一个包servletConfig，然后新建一个ServletConfigDemo1类，在配置文件里进行如下配置： <servlet> <servlet-name>ServletConfigDemo1</servlet-name> <servlet-class>servletConfig.ServletConfigDemo1</servlet-class> <init-param>

I am using JasperReport for generation reports in Java Web Application. I have a following line to get report file. JasperReport report = (JasperReport) JRLoader.loadObject(getServletConfig().getServletContext().getRealPath("\rpts\report1.jasper")); But when I try using above line I am getting FileNotFoundException . But when I try using following line, program executes successfully. JasperReport report = (JasperReport) JRLoader.loadObject(getServletConfig().getServletContext().getRealPath("//rpts//report1.jasper")); So, I want to know what is the problem with first line? Thanks in advance...

I have written a liferay richfaces portlet. But iam not able to get the css path or images in the web-inf folder. My portlet config is <portlet> <portlet-name>testLR6_PB3_RF4</portlet-name> <instanceable>true</instanceable> <render-weight>1</render-weight> <ajaxable>true</ajaxable> <header-portlet-css>/resources/css/style.css</header-portlet-css> <header-portlet-javascript>/js/eims.js</header-portlet-javascript> <footer-portlet-javascript>/js/fileupload.js</footer-portlet-javascript> </portlet> and in my jsf page <link href="${facesContext.externalContext.requestContextPath}/resources/css

Is it possible to set welcome-file tag from standard web.xml file by servlet 3.0 annotation ? <welcome-file-list> <welcome-file>PageName.html</welcome-file> </welcome-file-list> No, there is not such annotation at the moment. Servlet 3.0 annotations are InitParam, ServletFilter, WebServlet, WebServletContextListener, there's nothin for the welcome files in there. 来源： https://stackoverflow.com/questions/2540549/servlet-3-0-annotations-welcome-file