配置 JavaWeb 項目URL地址 ==== 127.0.0.1:8080/項目名
方法一: 在將jsp中 ${pageContext.request.contextPath}
方法二:${cxt}
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
@WebListener
public class AppListener implements ServletContextListener{
@Override
public void contextInitialized(ServletContextEvent sce) {
ServletContext context = sce.getServletContext();
context.setAttribute("cxt", context.getContextPath());
}
@Override
public void contextDestroyed(ServletContextEvent sce) {
}
}