关于servlet3.0中配置@WebInitParam的问题

来源：互联网发布：qq飞车锐速数据编辑：程序博客网时间：2024/06/06 16:27

servlet3.0中，不再需要通过配置web.xml文件来初始化各种信息，但是在@WebIntiParam中配置的时候程序里面却在么也拿不到，程序如下：

<pre name="code" class="java">package com.servlet;import java.io.BufferedReader;import java.io.File;import java.io.FileReader;import java.io.IOException;import javax.servlet.ServletConfig;import javax.servlet.ServletException;import javax.servlet.annotation.WebInitParam;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.omg.CORBA.SystemException;@WebServlet(/ConfigDeme)public class ConfigDeme extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {// TODO Auto-generated method stubString path = this.getServletConfig().getInitParameter("path");System.out.println(path);File file = new File(path);BufferedReader in = new BufferedReader(new FileReader(file));String str = null;while((str=in.readLine()) != null){System.out.println(str);}}}

后来通过搜索发现需要将@WebInitParam这样配置：

<span style="font-size:14px;color:#CC0000;"><strong>@WebServlet(urlPatterns = "/ConfigDeme",initParams={@WebInitParam(name="path",value="D:/b.txt")})</strong></span>

这样就能在程序中访问到path和value了，不知为何.

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