1.新建项目

 点击create

 2.添加web项目框架

 3.选中web框架

 点击ok

 4.添加tomcat

 5.选择tomcat

 点击应用点击ok

 6.配置tomcat路径以及相关设置

 点击应用点击ok

 7.将web项目的war包部署到tomcat上

 8.确保处理请求一致

 点击应用点击ok

9.添加项目依赖

  点击应用点击ok

10.检查依赖是否添加到war包中

 这样一个基本的一个web项目配置完成

设置项目基本文件层级结构

配置文件的文件夹标记设置

 文字编码过滤器设置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    <filter>
        <filter-name>EncodingFilter</filter-name>
        <filter-class>com.kgc.filter.EncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>htmlShow</param-name>
            <param-value>text/html;charset=utf-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>EncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

package com.qy.filter;

import javax.servlet.*;
import java.io.IOException;


/**
 * @author Magic
 * @version 1.0
 */
public class EncodingFilter implements Filter {
    // 获取web.xml文件中的配置utf-8
    private String encoding;
    private String htmlShow;

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        // 从web.xml的过滤器的init-param中，对应的值，在赋值给全局变量
        encoding = filterConfig.getInitParameter("encoding");
        htmlShow =filterConfig.getInitParameter("htmlShow");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        // 设置编码；
        servletRequest.setCharacterEncoding(encoding);
        servletResponse.setCharacterEncoding(encoding);
        servletResponse.setContentType(htmlShow);
        // 放行
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {

    }
}