当年的java考试：Java景区预约登记管理系统(maven整合servlet)

2022-11-30 16:01:37 浏览数 (2)

maven整合servlet的过程以及使用mybatis框架进行CRUD操作

需求效果：

1、搭建maven整合servlet（10分） 2、mybatis各种配置（创建数据库）（10分） 3、完成各层编码与联系（30分） 4、在DAO层进行编码测试（0分） 5、在servlet层创建查询GetInfo、添加AddInfo、修改SelectById,UpdateById,删除DeleteById（30分） 6、完成视图层编码，GetInfo.jsp,AddInfo.jsp（10分） 7、（编码规范与异常处理）（10分） 8、提交项目（提交正确计分，否则0分） 

环境：

开发工具：【IntelliJ IDEA 2020.1.3 x64】 mysql版本：【5.6.x】 mysql工具：【Navicat Premium 15】

完成步骤以及编码：

添加各层的包

添加【tomcat】

Tomcat添加项目成功

添加Tomcat包

创建【com.item.servlet】下【GetInfoServlet.java】测试servlet接口

刷新【maven】才会出现【Create New Servlet】

代码语言：javascript复制
package com.item.servlet;

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("/GetInfo")
public class GetInfoServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        System.out.println("访问测试");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request,response);
    }
}

访问成功 

添加mybatis对应maven包

代码语言：javascript复制
<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis</artifactId>
  <version>3.5.1</version>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-log4j12</artifactId>
  <version>1.7.10</version>
</dependency>
<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.6</version>
</dependency>

在src/main/的resources内创建【mybatis-config.xml】文件

配置头部：

代码语言：javascript复制
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">

添加图下配置编码：

代码语言：javascript复制
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <setting name="logImpl" value="LOG4J"/>
    </settings>
    <typeAliases>
        <package name="com.item.model"/>
    </typeAliases>
    <environments default="dev">
        <environment id="dev">
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://127.0.0.1:3306/mytest?characterEncoding=utf-8"/>
                <property name="username" value="root"/>
                <property name="password" value="12345678"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="com/item/mapper/TbTourinfoMapper.xml"></mapper>
    </mappers>
</configuration>

根据【com/item/mapper/TbTourinfoMapper.xml】在【resources】下创建包与配置文件

编码内容如下，包含【查询】【筛选查询】【添加】【删除】【修改】

代码语言：javascript复制
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.item.mapper.TbTourinfoMapper">
    <!-- 查询所有 -->
    <select id="GetInfo" resultType="TbTourinfo">
        select * from tb_tourinfo;
    </select>
    <!-- 各种查询-->
    <select id="SelectByNameSexType" resultType="TbTourinfo">
        select * from tb_tourinfo
        <if test="name!=null or sex!=null or type!=null">
            where 1=1
        </if>
        <if test="name!=null">
            and name like "%${name}%"
        </if>
        <if test="sex!=null">
            and sex="${sex}"
        </if>
        <if test="type!=null">
            and type="${type}"
        </if>
    </select>
    <insert id="AddInfo">
        insert into tb_tourinfo values
        (
        0,
        "${name}",
        "${sex}",
        "${id_no}",
        #{age},
        #{type},
        NOW(),
        #{visit_state},
        now()
        );
    </insert>
    <!-- 删除语句 -->
    <delete id="DeleteById" parameterType="java.lang.Integer">
        delete from tb_tourinfo where id=#{id}
    </delete>
    <!-- 修改状态在语句 -->
    <update id="UpdateById">
        update tb_tourinfo set visit_state=#{visit_state} where id=#{id}
    </update>
</mapper>

在【resources】下创建【log4j.properties】文件

代码语言：javascript复制
#全局配置
log4j.rootLogger=debug,stdout,ERROR
#MyBatis日志配直
log4j.logger.com.item.mapper=TRACE
#控制台输出配置
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

创建【com.item.model】内【TbTourinfo】文件

需要添加数据表对应的【属性】，并添加【Getter】与【Setter】以及【toString】方法。

代码语言：javascript复制
package com.item.model;

import java.util.Date;

public class TbTourinfo {
    private int id;
    private String name;
    private String sex;
    private String id_no;
    private int age;
    private String type;
    private Date visit_date;
    private int visit_state;
    private Date register_time;

    @Override
    public String toString() {
        return "TbTourinfo{"  
                "id="   id  
                ", name='"   name   '''  
                ", sex='"   sex   '''  
                ", id_no='"   id_no   '''  
                ", age="   age  
                ", type='"   type   '''  
                ", visit_date="   visit_date  
                ", visit_state="   visit_state  
                ", register_time="   register_time  
                '}';
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getId_no() {
        return id_no;
    }

    public void setId_no(String id_no) {
        this.id_no = id_no;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public Date getVisit_date() {
        return visit_date;
    }

    public void setVisit_date(Date visit_date) {
        this.visit_date = visit_date;
    }

    public int getVisit_state() {
        return visit_state;
    }

    public void setVisit_state(int visit_state) {
        this.visit_state = visit_state;
    }

    public Date getRegister_time() {
        return register_time;
    }

    public void setRegister_time(Date register_time) {
        this.register_time = register_time;
    }
}

在【com.item.mapper】下创建【TbTourinfoMapper】

代码语言：javascript复制
package com.item.mapper;

import com.item.model.TbTourinfo;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface TbTourinfoMapper {
    List<TbTourinfo> GetInfo();

    /**
     * 根据参数进行查询
     * @param name (姓名)
     * @param sex (性别)
     * @param type (会员类型)
     * @return
     */
    List<TbTourinfo> SelectByNameSexType(
            @Param("name") String name,
            @Param("sex") String sex,
            @Param("type") String type
    );

    int AddInfo(
            @Param("name") String name,
            @Param("sex") String sex,
            @Param("id_no") String id_no,
            @Param("age") int age,
            @Param("type") int type,
            @Param("visit_state") int visit_state
    );
    int DeleteById(@Param("id") int id);
    int UpdateById(@Param("visit_state") int visit_state,
                   @Param("id") int id);
}

在【com.item.common】下创建JDBC用于获取数据库连接池链接

代码语言：javascript复制
package com.item.common;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.Reader;

public class JDBC {
    public static SqlSessionFactory GetConn(){
        try {
            Reader reader = Resources.getResourceAsReader("mybatis-config.xml");
            SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(reader);
            return factory;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void main(String[] args) {
        System.out.println(GetConn());
    }
}

在【com.item.dao】下创建【TbTourinfoDAO.java】文件

代码语言：javascript复制
package com.item.dao;

import com.item.common.JDBC;
import com.item.mapper.TbTourinfoMapper;
import com.item.model.TbTourinfo;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;

import java.util.List;

public class TbTourinfoDAO {
    /**
     * 查询所有
     * @return
     */
    public static List<TbTourinfo> GetInfo(){
        SqlSessionFactory factory = JDBC.GetConn();
        SqlSession session = factory.openSession();
        TbTourinfoMapper db = session.getMapper(TbTourinfoMapper.class);
        List<TbTourinfo> list = db.GetInfo();
        session.close();
        return list;
    }

    /**
     * 综合信息查询
     * @param name
     * @param sex
     * @param type
     * @return
     */
    public static List<TbTourinfo> SelectByNameSexType(String name,String sex,String type){
        SqlSessionFactory factory = JDBC.GetConn();
        SqlSession session = factory.openSession();
        TbTourinfoMapper db = session.getMapper(TbTourinfoMapper.class);
        List<TbTourinfo> list = db.SelectByNameSexType(name,sex,type);
        session.close();
        return list;
    }

    /**
     * 添加
     * @param name
     * @param sex
     * @param id_no
     * @param age
     * @param type
     * @param visit_state
     * @return
     */
    public static boolean AddInfo(String name,String sex,String id_no,int age,int type,int visit_state){
        SqlSessionFactory factory = JDBC.GetConn();
        SqlSession session = factory.openSession();
        TbTourinfoMapper db = session.getMapper(TbTourinfoMapper.class);
        int rows = db.AddInfo(name, sex, id_no, age, type, visit_state);
        session.commit();
        session.close();
        return rows>0;
    }

    /**
     * 删除
     * @param id
     * @return
     */
    public static boolean DeleteById(int id){
        SqlSessionFactory factory = JDBC.GetConn();
        SqlSession session = factory.openSession();
        TbTourinfoMapper db = session.getMapper(TbTourinfoMapper.class);
        int rows = db.DeleteById(id);
        session.commit();
        session.close();
        return rows>0;
    }

    /**
     * 修改
     * @param visit_state
     * @param id
     * @return
     */
    public static boolean UpdateById(int visit_state,int id){
        SqlSessionFactory factory = JDBC.GetConn();
        SqlSession session = factory.openSession();
        TbTourinfoMapper db = session.getMapper(TbTourinfoMapper.class);
        int rows = db.UpdateById(visit_state,id);
        session.commit();
        session.close();
        return rows>0;
    }

    public static void main(String[] args) {
        int oldState=1;
        System.out.println(UpdateById(oldState==0?1:0,7));
    }
}

在【com.item.servlet】下以此创建

【GetInfoServlet】

代码语言：javascript复制
package com.item.servlet;

import com.item.dao.TbTourinfoDAO;
import com.item.model.TbTourinfo;
import sun.misc.CharacterEncoder;

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;
import java.util.List;

/**
 * 本类为GetInfo查询所有的类
 */
@WebServlet("/GetInfo")
public class GetInfoServlet extends HttpServlet {
    /**
     * 这是DOPOST访问接口
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        List<TbTourinfo> list = TbTourinfoDAO.GetInfo();
        request.setAttribute("lists",list);
        request.getRequestDispatcher("GetInfo.jsp").forward(request,response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
}

【SelectByNameSexTypeServlet】

代码语言：javascript复制
package com.item.servlet;

import com.item.dao.TbTourinfoDAO;
import com.item.model.TbTourinfo;

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;
import java.util.List;

@WebServlet("/SelectByNameSexType")
public class SelectByNameSexTypeServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");
        String name = request.getParameter("name");
        String sex = request.getParameter("sex");
        String type = request.getParameter("type");
        List<TbTourinfo> list = TbTourinfoDAO.SelectByNameSexType(name==""?null:name, sex==""?null:sex, type==""?null:type);
        request.setAttribute("lists",list);
        request.getRequestDispatcher("GetInfo.jsp").forward(request,response);
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
}

【AddInfoServlet】

代码语言：javascript复制
package com.item.servlet;

import com.item.dao.TbTourinfoDAO;

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("/AddInfo")
public class AddInfoServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");
        String name = request.getParameter("name");
        String sex = request.getParameter("sex");
        String id_no = request.getParameter("id_no");
        String age = request.getParameter("age");
        String type = request.getParameter("type");
        TbTourinfoDAO.AddInfo(name,sex,id_no,Integer.parseInt(age),Integer.parseInt(type),0);
        response.sendRedirect("GetInfo");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
}

【DeleteByIdServlet】

代码语言：javascript复制
package com.item.servlet;

import com.item.dao.TbTourinfoDAO;

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("/DeleteById")
public class DeleteByIdServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String id = request.getParameter("id");
        TbTourinfoDAO.DeleteById(Integer.parseInt(id));
        response.sendRedirect("GetInfo");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
}

【UpdateByIdServlet】

代码语言：javascript复制
package com.item.servlet;

import com.item.dao.TbTourinfoDAO;

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("/UpdateById")
public class UpdateByIdServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String visit_state = request.getParameter("visit_state");
        String id = request.getParameter("id");
        TbTourinfoDAO.UpdateById(Integer.parseInt(visit_state.equals("0")?"1":"0"),Integer.parseInt(id));
        response.sendRedirect("GetInfo");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
}

在【webapp】下创建

【GetInfo.jsp】

代码语言：javascript复制
<%@ page import="java.util.List" %>
<%@ page import="com.item.model.TbTourinfo" %><%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2022/5/18 0018
  Time: 22:58
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>

    <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<h1 align="center">景区预约登记管理系统</h1>
<hr/>
<% List<TbTourinfo> list = (List<TbTourinfo>) request.getAttribute("lists");%>

<form action="/SelectByNameSexType">
    游客姓名：<input type="text" name="name" placeholder="请输入搜索姓名"/>
    游客性别：<input type="text" name="sex" placeholder="请输入游客性别"/>
    游客类别：<select name="type">
    <option value="" selected>所有</option>
    <option value="0">非会员</option>
    <option value="1">普通会员</option>
    <option value="2">VIP会员</option>
    <option value="3">钻石会员</option>
    <option value="4">年卡会员</option>
</select>
    <input type="submit" value="查询" class="btn btn-primary"/>
    <a href="/AddInfo.jsp" class="btn btn-primary">添加</a>
</form>
<table class="table table-bordered table-hover">
    <tr class="info">
        <th>编号</th>
        <th>名称</th>
        <th>性别</th>
        <th>身份证</th>
        <th>年龄</th>
        <th>类型</th>
        <th>创建时间</th>
        <th>是否使用</th>
        <th>登录时间</th>
        <th>操作</th>
    </tr>
    <%
        for (TbTourinfo t : list) {
    %>
    <tr>
        <td><%=t.getId()%>
        </td>
        <td><%=t.getName()%>
        </td>
        <td><%=t.getSex()%>
        </td>
        <td><%=t.getId_no()%>
        </td>
        <td><%=t.getAge()%>
        </td>
        <td><%=t.getType()%>
        </td>
        <td><%=t.getVisit_date()%>
        </td>
        <td><%=t.getVisit_state()==0?"未使用":"已使用"%>
        </td>
        <td><%=t.getRegister_time()%>
        </td>
        <td>
            <a href="/UpdateById?visit_state=<%=t.getVisit_state()%>&id=<%=t.getId()%>" class="btn btn-primary">修改</a>
            <a href="/DeleteById?id=<%=t.getId()%>" onclick="return confirm('是否删除此行?')" class="btn btn-primary">删除</a>
        </td>
    </tr>
    <%
        }
    %>
</table>
</body>
</html>

【AddInfo.jsp】

代码语言：javascript复制
<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2022/5/18 0018
  Time: 22:58
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
    <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
    <form action="/AddInfo" method="post" style="width:50%;position: relative;left: 30%">
        <p>
            <input type="text" name="name" class="form-control" placeholder="请输入姓名"/>
        </p>
        <p>
            <input type="text" name="sex" class="form-control" placeholder="请输入性别"/>
        </p>
        <p>
            <input type="text" name="id_no" class="form-control" placeholder="请输入身份证"/>
        </p>
        <p>
            <input type="text" name="age" class="form-control" placeholder="请输入年龄"/>
        </p>
        <p>
            <input type="text" name="type" class="form-control" placeholder="请输入类型"/>
        </p>
        <p>
            <input type="submit" value="提交" class="btn btn-success btn-block"/>
        </p>
    </form>
</body>
</html>
servlet mybatis jsp maven xml

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