HTTP状态 500 - 内部服务器错误com.xurong.servletOther.ServletConfigureDemo.doGet

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已于 2022-04-05 09:17:20 修改

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分类专栏： java语法 javaweb报错文章标签： java-ee

于 2022-04-04 00:20:25 首次发布

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# HTTP状态 500 - 内部服务器错误com.xurong.servletOther.ServletConfigureDemo.doGet(ServletConfigureDemo.java:33)

1.原来是想实现一个servlet配置信息的访问，其源码如下：

1.java代码：

package com.servletOther;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @auther xu
 * @date 2022/4/3 - 15:31
 */
public class ServletConfigureDemo extends HttpServlet {
    private ServletConfig config;

    public ServletConfigureDemo() {
        super();
    }

    @Override
    public void init(ServletConfig config) throws ServletException {
        this.config = config;
    }

    @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //获取配置文件方式1：
//        String encodingValue = config.getInitParameter("encoding");
//        System.out.println(encodingValue);

        //获取配置文件方式2：
        String encodingValue = super.getServletConfig().getInitParameter("encoding");
        System.out.println(encodingValue);

    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        this.doGet(req,resp);
    }


}