idea-maven工程 - 爱码网

1.maven中的settings.xml文件修改

   <mirror>
       <id>alimaven</id>
       <name>aliyun maven</name>
       <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
       <mirrorOf>central</mirrorOf>
   </mirror>

设置jar下载的地址

2.创建maven工程

idea-maven工程

创建好的工程，添加相应的文件夹

idea-maven工程

3.servlet+jsp 引入的maven ， pom.xml

<!-- servlet+jsp 依赖包 -->
<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>javax.servlet-api</artifactId>
  <version>3.1.0</version>
  <scope>provided</scope>
</dependency>
<dependency>
  <groupId>javax.servlet.jsp</groupId>
  <artifactId>javax.servlet.jsp-api</artifactId>
  <version>2.3.1</version>
</dependency>

<!-- jstl在jsp页面需要使用， 标签库 -->
<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>jstl</artifactId>
  <version>1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.48</version>
</dependency>

4.创建Controller，重写service方法

package com.wy.controller;

import com.wy.util.Const;

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

@WebServlet("/admin/*")
public class AdminInfoController extends HttpServlet {

    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 获取uri
        String uri = req.getRequestURI();
        System.out.println(uri);
        if((Const.APP_CONTEXT+Const.ADMIN_LOGIN_INIT).equals(uri)){
            req.getRequestDispatcher("/WEB-INF/admin/admin-login.jsp").forward(req,resp);
        }
    }
}

5.创建Filter，统一设置编码格式

package com.wy.filter;

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

@WebFilter("/*")
public class CharacterEncodingFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

        servletRequest.setCharacterEncoding("UTF-8");
        servletResponse.setContentType("text/html;charset=UTF-8");
        filterChain.doFilter(servletRequest,servletResponse);
    }

    @Override
    public void destroy() {

    }
}

6.配置tomcat，启动工程即可访问

idea-maven工程

7.常量类

package com.wy.util;

public class Const {

    public static final String APP_CONTEXT = "/book";
    /* 初始化后台登录页面 */
    public static final String ADMIN_LOGIN_INIT = "/admin/loginInit";
}