springboot+thymeleaf实现学生信息管理系统

2024-03-12 23:54:57

1.https://spring.io/

2.

3.idea中打开项目

4.配置application.properties

spring.datasource.url=jdbc:mysql://localhost:3306/demo?useSSL=true&useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
mybatis.mapper-locations=classpath:mapper/*.xml  
# 注意：对应实体类的路径
mybatis.type-aliases-package=com.rj.stu.stuManagement.entity

5.在pom文件末尾新增mybatis generator的配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.4.3</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.rj.stu</groupId>
	<artifactId>stuManagement</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>stuManagement</name>
	<description>Demo project for Spring Boot</description>
	<properties>
		<java.version>11</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>2.1.4</version>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			<plugin>
				<groupId>org.mybatis.generator</groupId>
				<artifactId>mybatis-generator-maven-plugin</artifactId>
				<version>1.3.1</version>
				<configuration>
					<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
					<overwrite>true</overwrite>
					<verbose>true</verbose>
				</configuration>
				<dependencies>
					<dependency>
						<groupId>mysql</groupId>
						<artifactId>mysql-connector-java</artifactId>
						<version>${mysql.version}</version>
					</dependency>
				</dependencies>
			</plugin>
		</plugins>
	</build>

</project>

5.按照刚刚上一张图中紫色框住的文件路径去新建一个generator文件夹，并在generator文件夹下新建generatorConfig.xml文件。（千万注意不要拼写错误）

6.generator.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
    <!-- 数据库驱动:选择你的本地硬盘上面的数据库驱动包-->
    <classPathEntry  location="C:\Program Files (x86)\MySQL\Connector.J 5.1\mysql-connector-java-5.1.40-bin.jar"/>
    <context id="DB2Tables"  targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true"/>
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressAllComments" value="false"/>
        </commentGenerator>
        <!--数据库连接驱动类,URL，用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/demo" userId="root" password="123456">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!-- 生成(实体)模型的包名和位置-->
        <javaModelGenerator targetPackage="com.rj.stu.stuManagement.entity" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!-- 生成XML映射文件的包名和位置-->
        <sqlMapGenerator targetPackage="resources.mapper" targetProject="src/main">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!-- 生成DAO接口的包名和位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.rj.stu.stuManagement.mapper" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是实体类名-->
        <table tableName="stu" domainObjectName="Student" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
    </context>
</generatorConfiguration>

红框位置是你需要修改的

7.配置generator maven来生成mybatis

加上这一行mybatis-generator:generate -e

8.选择刚刚新建的maven generator来运行

9.如果生成了以下红框部分就说明成功了

10.在StudentMapper中新增一个查询方法

package com.rj.stu.stuManagement.mapper;

import com.rj.stu.stuManagement.entity.Student;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Component;

import java.util.List;
@Component
@Mapper
public interface StudentMapper {
//   删除
    int deleteByPrimaryKey(Integer sno);
//  新增
    int insert(Student record);
//
    int insertSelective(Student record);
//按照学号查询
    Student selectByPrimaryKey(Integer sno);
//更新
    int updateByPrimaryKeySelective(Student record);
//
    int updateByPrimaryKey(Student record);

//    查询
    List<Student> QueryAll();
}

11.然后在StudentMapper.xml中实现刚写的查询方法

12.新建service包来实现mapper

13.StuInterface

package com.rj.stu.stuManagement.service;

import com.rj.stu.stuManagement.entity.Student;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public interface StuInterface {
//    查询
    List<Student> QuertAll();
//    按照学号来查询学生信息
    Student selectByPrimaryKey(Integer sno);
//    新增
    boolean Add(Student student);
//    删除
    boolean Del(int sno);
//    修改
    boolean Update(Student student);
}

14.StuImpl

package com.rj.stu.stuManagement.service;

import com.rj.stu.stuManagement.entity.Student;
import com.rj.stu.stuManagement.mapper.StudentMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class StuImpl implements StuInterface{
    @Autowired
    private StudentMapper studentMapper;
//    查询
    public List<Student> QuertAll() {
        List<Student> students = studentMapper.QueryAll();
        return students;
    }

    //    按照学号来查询学生信息
    public Student selectByPrimaryKey(Integer sno) {
        Student student = studentMapper.selectByPrimaryKey(sno);
        return student;
    }

    //新增
    public boolean Add(Student student) {
        int i = studentMapper.insert(student);
        if(i>0)
            return true;
        else
          return false;
    }
//删除
    public boolean Del(int sno) {
        int i = studentMapper.deleteByPrimaryKey(sno);
        if(i>0)
            return true;
        else
            return false;
    }
// 更新
    public boolean Update(Student student) {
        int i = studentMapper.updateByPrimaryKey(student);
        if(i>0)
            return true;
        else
            return false;
    }
}

15.写controller类。创建controller包并新建StuController文件

package com.rj.stu.stuManagement.controller;

import com.rj.stu.stuManagement.entity.Student;
import com.rj.stu.stuManagement.service.StuImpl;
import com.rj.stu.stuManagement.service.StuInterface;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

@Controller
public class StuController {
    @Autowired
    private StuInterface stuInterface;
//    查询
    @RequestMapping("/Display")
    public ModelAndView Display(){
        ModelAndView modelAndView = new ModelAndView();
        List<Student> studentList = stuInterface.QuertAll();
        modelAndView.addObject("students",studentList);
        modelAndView.setViewName("Display");
        return modelAndView;
    }
//    删除
    @RequestMapping("/del")
    public ModelAndView del(HttpServletRequest request){
        int sno = Integer.parseInt(request.getParameter("sno"));
        stuInterface.Del(sno);
        return new ModelAndView("redirect:/Display");
    }
//    新增
    @GetMapping("/addPage")
    public ModelAndView addPage(Model model){
        model.addAttribute("student",new Student());
        return new ModelAndView("add","stumodel",model);
    }
    @PostMapping("/add")
    public ModelAndView add(Student student){
        stuInterface.Add(student);
        return new ModelAndView("redirect:/Display");
    }
//    更新
    @GetMapping("/sendsno")
    public ModelAndView sendsno(HttpServletRequest request,Model model){
        int sno = Integer.parseInt(request.getParameter("sno"));
        Student student = stuInterface.selectByPrimaryKey(sno);
        model.addAttribute("student",student);
        return new ModelAndView("Edit","stumodel",model);
    }
    @PostMapping("/update")
    public ModelAndView update(Student student){
        System.out.println(student);
        stuInterface.Update(student);
        return new ModelAndView("redirect:/Display");
    }
}

16.在template下新建这几个文件

Display.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>学生信息展示</title>
</head>
<body>
    <table border="1px">
        <tr>
            <th>学号</th>
            <th>姓名</th>
            <th>年龄</th>
            <th>地址</th>
            <th>密码</th>
            <th>操作</th>
        </tr>
        <tr th:each="students:${students}">
            <td th:text="${students.sno}"></td>
            <td th:text="${students.sname}"></td>
            <td th:text="${students.sage}"></td>
            <td th:text="${students.saddress}"></td>
            <td th:text="${students.spwd}"></td>
            <td>
                <a th:href="@{sendsno(sno=${students.sno})}">更新</a>
                <a th:href="@{del(sno=${students.sno})}">删除</a>
            </td>
        </tr>
        <a href="/addPage">新增</a>
    </table>

</body>
</html>

add.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>新增</title>
</head>
<body>
    <form action="/add" method="post" th:object="${stumodel.student}">
        学号：<input type="text" name="sno" th:value="*{sno}">
        姓名：<input type="text" name="sname" th:value="*{sname}">
        年龄：<input type="text" name="sage" th:value="*{sage}">
        地址：<input type="text" name="saddress" th:value="*{saddress}">
        密码：<input type="text" name="spwd" th:value="*{spwd}">
        <input type="submit" value="添加">
    </form>
</body>
</html>

Edit.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>编辑</title>
</head>
<body>
<form action="/update" method="post" th:object="${stumodel.student}">
    学号：<input type="text" name="sno" th:value="*{sno}" readonly>
    姓名：<input type="text" name="sname" th:value="*{sname}">
    年龄：<input type="text" name="sage" th:value="*{sage}">
    地址：<input type="text" name="saddress" th:value="*{saddress}">
    密码：<input type="text" name="spwd" th:value="*{spwd}">
    <input type="submit" value="更新">
</form>
</body>
</html>

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