Log4jServlet.java 文件源码

/**
 * Initialization of the servlet. <br>
 *
 * @throws ServletException if an error occurs
 */
public void init(ServletConfig config) throws ServletException {
    // Put your code here
    System.out.println("Log4jServlet 正在初始化log4j日志设置信息");
    String log4jLocation = config.getInitParameter("log4j-properties-location");
    ServletContext sc = config.getServletContext();
    if(log4jLocation == null){
        System.out.println("** 没有log4j-properties-location 初始化文件，所以使用BasicConfiguratorc初始化 **");
        BasicConfigurator.configure();
    }else{
        String webAppPath = sc.getRealPath("/");
        String log4jProp = webAppPath + log4jLocation;
        File log4File = new File(log4jProp);
        if(log4File.exists()){
            System.out.println("使用："+ log4jProp + "初始化日志设置信息");
            PropertyConfigurator.configure(log4jProp);
        }else{
            System.out.println("*****" + log4jProp + "文件没有找到，所以使用BasicConfigurator初始化*****");
            BasicConfigurator.configure();
        }
    }
    super.init(config);
    System.out.println("---------log4jServlet  初始化log4j日志设置信息完成--------");

}