spring框架实现一个学生管理系统

使用工具

IDEA2018.2 MySQL5.6 JDK1.8 Tomcat8.5.33

使用jar包

commons-logging-1.2.jar
log4j-1.2.17.jar
log4j-api-2.3.jar
log4j-core-2.3.jar
mysql-connector-java-5.1.8.jar
spring-aop-4.3.6.RELEASE.jar
spring-aspects-4.3.6.RELEASE.jar
spring-beans-4.3.6.RELEASE.jar
spring-context-4.3.6.RELEASE.jar
spring-core-4.3.6.RELEASE.jar
spring-expression-4.3.6.RELEASE.jar
spring-jdbc-4.3.6.RELEASE.jar
spring-tx-4.3.6.RELEASE.jar
jar下载微云链接：https://share.weiyun.com/5UWqHhY

环境搭建

代码示例

java目录

Student.java

package com.zr.bean;

import org.springframework.stereotype.Component;

/**
 * @Author VVcat
 * @Date 2019/10/11 10:11
 **/

@Component
public class Student {
    //属性的封装
    private int id;
    private String name;
    private String sex;
    private int age;

    //get and set
    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 int getAge() {
        return age;
    }

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

    public Student( String name, String sex, int age,int id) {
        this.name = name;
        this.sex = sex;
        this.age = age;
        this.id = id;
    }

    public Student(String name, String sex, int age) {
        this.name = name;
        this.sex = sex;
        this.age = age;
    }

    public Student() {
    }

    //toString
    @Override
    public String toString() {
        return "Student{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", sex='" + sex + '\'' +
                ", age=" + age +
                '}';
    }
}

StudentDaoImpl.java

package com.zr.dao.impl;

import com.zr.bean.Student;
import com.zr.dao.IStudentDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * @Author VVcat
 * @Date 2019/10/11 12:13
 **/
@Repository
public class StudentDaoImpl implements IStudentDao {
    @Autowired
    private JdbcTemplate jdbcTemplate;
    private boolean flag = false;

    //注入方法
    public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
    }


    @Override
    public boolean add(Student student) {
        String sql = "insert into tb_student values(null,?,?,?)";
        int row = jdbcTemplate.update(sql, student.getName(), student.getSex(), student.getAge());
        if (row>0){
            flag = true;
        }
        return flag;
    }

    @Override
    public boolean delStu(int stuId) {
        String sql = "delete from tb_student where id =?";
        int row = jdbcTemplate.update(sql, stuId);
        if (row>0){
            flag=true;
        }
        return flag;
    }

    @Override
    public boolean updStu(Student student) {
        String sql = "update tb_student set name = ?, sex = ?,age = ? where id = ? ";
        int row = jdbcTemplate.update(sql, student.getName(), student.getSex(), student.getAge(), student.getId());
        if (row>0){
            flag=true;
        }
        return flag;
    }

    @Override
    public Student findById(int stuId) {
        String sql = "select * from tb_student where id = ?";
        BeanPropertyRowMapper<Student> rowMapper = new BeanPropertyRowMapper<>(Student.class);
        Student student = null;
        try {
            student = jdbcTemplate.queryForObject(sql, new Object[]{stuId}, rowMapper);
        }catch (Exception e){
            student = null;
        }
        return student;
    }

    @Override
    public List<Student> findAll() {
        String sql = "select * from tb_student";
        BeanPropertyRowMapper<Student> rowMapper = new BeanPropertyRowMapper<>(Student.class);
        List<Student> studentList = jdbcTemplate.query(sql, rowMapper);
        return studentList;
    }
}

IStudentDao.java

package com.zr.dao;

import com.zr.bean.Student;

import java.util.List;

public interface IStudentDao {
    //增加
    boolean add(Student student);
    //删除
    boolean delStu(int stuId);
    //修改
    boolean updStu(Student student);
    //单查询
    Student findById(int stuId);
    //全查
    List<Student> findAll();
}

Main.java

package com.zr.main;

import com.zr.bean.Student;
import com.zr.service.impl.StudentServiceImpl;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;
import java.util.Scanner;

/**
 * @Author VVcat
 * @Date 2019/10/11 16:29
 **/
public class Main {
    //加载配置文件applicationContext.xml
    static ApplicationContext ac = new ClassPathXmlApplicationContext("/applicationContext.xml");
    public static void main(String[] args) {
        boolean flag=true;
        while (flag){
            System.out.println("学生管理系统");
            System.out.println("-----------------------------");
            System.out.println("1.添加学生信息");
            System.out.println("2.删除学生信息");
            System.out.println("3.更改学生信息");
            System.out.println("4.查询学生信息");
            System.out.println("5.查询所有学生信息");
            System.out.println("6.退出系统");
            System.out.println("----------------------------");
            Scanner input = new Scanner(System.in);
            System.out.print("请选择功能：");
            boolean flag2 = true;
            int i = input.nextInt();
            switch (i){
                case 1:
                    while (flag2){
                        StudentServiceImpl ssi = (StudentServiceImpl) ac.getBean("studentServiceImpl");
                        Student student = new Student();
                        System.out.print("请输入学生姓名:");
                        String name = input.next();
                        System.out.print("请输入学生性别:");
                        String sex = input.next();
                        System.out.print("请输入学生年龄:");
                        int age = input.nextInt();
                        student.setName(name);
                        student.setSex(sex);
                        student.setAge(age);
                        boolean b = ssi.add(student);
                        if (b){
                            System.out.println("添加成功");
                            System.out.println("---------------------");
                            System.out.println("1.退出添加");
                            System.out.println("2.继续添加");
                            System.out.println("请输入您的选择");
                            int i1 = input.nextInt();
                            flag2 = ssi.isNext(i1, flag2);
                        }else {
                            System.out.println("添加失败");
                            System.out.println("---------------------");
                            System.out.println("1.退出添加");
                            System.out.println("2.继续添加");
                            System.out.println("请输入您的选择");
                            int i1 = input.nextInt();
                            flag2 = ssi.isNext(i1, flag2);
                        }
                    }
                    break;
                case 2:
                    while (flag2){
                        StudentServiceImpl ssi = (StudentServiceImpl) ac.getBean("studentServiceImpl");
                        System.out.print("请输入要删除学生的ID:");
                        int id = input.nextInt();
                        boolean b = ssi.delStu(id);
                        if (b){
                            System.out.println("删除成功");
                            System.out.println("---------------------");
                            System.out.println("1.退出删除");
                            System.out.println("2.继续删除");
                            System.out.println("请输入您的选择");
                            int i1 = input.nextInt();
                            flag2 = ssi.isNext(i1, flag2);
                        }else {
                            System.out.println("删除失败,没有该用户");
                            System.out.println("---------------------");
                            System.out.println("1.退出删除");
                            System.out.println("2.继续删除");
                            System.out.println("请输入您的选择");
                            int i1 = input.nextInt();
                            flag2 = ssi.isNext(i1, flag2);
                        }
                    }
                    break;
                case 3:
                    while (flag2){
                        StudentServiceImpl ssi = (StudentServiceImpl) ac.getBean("studentServiceImpl");
                        Student student = new Student();
                        System.out.print("请输入要更改学生的ID:");
                        int id = input.nextInt();
                        Student studentById = ssi.findById(id);
                        if (studentById != null){
                            boolean gengai = true;
                            while (gengai){
                                System.out.println("此用户的信息为：");
                                System.out.println("ID:"+studentById.getId());
                                System.out.println("name:"+studentById.getName());
                                System.out.println("sex:"+studentById.getSex());
                                System.out.println("age:"+studentById.getAge());
                                System.out.println("-------------------------");
                                System.out.println("是否更改该用户");
                                System.out.println("1.更改");
                                System.out.println("2.换一个更改");
                                System.out.println("3.退出更改");
                                int j = input.nextInt();
                                switch (j){
                                    case 1:
                                        System.out.print("请输入学生姓名:");
                                        String name = input.next();
                                        System.out.print("请输入学生性别:");
                                        String sex = input.next();
                                        System.out.print("请输入学生年龄:");
                                        int age = input.nextInt();
                                        student.setId(id);
                                        student.setName(name);
                                        student.setSex(sex);
                                        student.setAge(age);
                                        boolean b = ssi.updStu(student);
                                        if (b){
                                            System.out.println("更改成功");
                                            System.out.println("---------------------");
                                            System.out.println("1.退出更改");
                                            System.out.println("2.继续更改");
                                            System.out.println("请输入您的选择");
                                            int i1 = input.nextInt();
                                            flag2 = ssi.isNext(i1, flag2);
                                            gengai = false;
                                        }else {
                                            System.out.println("更改失败");
                                            System.out.println("---------------------");
                                            System.out.println("1.退出更改");
                                            System.out.println("2.继续更改");
                                            System.out.println("请输入您的选择");
                                            int i1 = input.nextInt();
                                            flag2 = ssi.isNext(i1, flag2);
                                            gengai = false;
                                        }
                                        break;
                                    case 2:
                                        flag2 = true;
                                        gengai = false;
                                        break;
                                    case 3:
                                        flag2 = false;
                                        gengai = false;
                                        break;
                                    default:
                                        gengai = true;
                                        break;
                                }
                            }
                        } else {
                            System.out.println("查无此人");
                            System.out.println("---------------------");
                            System.out.println("1.退出更改");
                            System.out.println("2.继续更改");
                            System.out.println("请输入您的选择");
                            int i1 = input.nextInt();
                            flag2 = ssi.isNext(i1, flag2);
                        }
                    }
                    break;
                case 4:
                    while (flag2){
                        StudentServiceImpl ssi = (StudentServiceImpl) ac.getBean("studentServiceImpl");
                        System.out.print("请输入要查询学生的ID:");
                        int id = input.nextInt();
                        Student studentById = ssi.findById(id);
                        if (studentById != null){
                            System.out.println("此用户的信息为：");
                            System.out.println("ID:"+studentById.getId());
                            System.out.println("name:"+studentById.getName());
                            System.out.println("sex:"+studentById.getSex());
                            System.out.println("age:"+studentById.getAge());
                            System.out.println("-------------------------");
                            System.out.println("1.退出查询");
                            System.out.println("2.继续查询");
                            System.out.println("请输入您的选择");
                            int i1 = input.nextInt();
                            flag2 = ssi.isNext(i1, flag2);
                        }else {
                            System.out.println("查无此人");
                            System.out.println("---------------------");
                            System.out.println("1.退出查询");
                            System.out.println("2.继续查询");
                            System.out.println("请输入您的选择");
                            int i1 = input.nextInt();
                            flag2 = ssi.isNext(i1, flag2);
                        }
                    }
                    break;
                case 5:
                    while (flag2){
                        StudentServiceImpl ssi = (StudentServiceImpl) ac.getBean("studentServiceImpl");
                        List<Student> studentList = ssi.findAll();
                        for (Student student : studentList) {
                            System.out.print("ID:"+student.getId()+",");
                            System.out.print("name:"+student.getName()+",");
                            System.out.print("sex:"+student.getSex()+",");
                            System.out.print("age:"+student.getAge()+",");
                            System.out.println();
                        }
                        System.out.println("-------------------------");
                        System.out.println("1.退出查询");
                        System.out.println("2.更新查询");
                        System.out.println("请输入您的选择");
                        int i1 = input.nextInt();
                        flag2 = ssi.isNext(i1, flag2);
                    }
                    break;
                case 6:
                    flag=false;
                    break;
                default:
                    flag = true;
                    break;
            }
        }
        System.out.println("欢迎下次光临");
    }
}

StudentServiceImpl.java

package com.zr.service.impl;

import com.zr.bean.Student;
import com.zr.dao.IStudentDao;
import com.zr.service.IStudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @Author VVcat
 * @Date 2019/10/11 11:21
 **/
@Service
public class StudentServiceImpl implements IStudentService {

    @Autowired
    private IStudentDao studentDao;

    @Override
    public boolean add(Student student) {
        return studentDao.add(student);
    }

    @Override
    public boolean delStu(int stuId) {
        return studentDao.delStu(stuId);
    }

    @Override
    public boolean updStu(Student student) {
        return studentDao.updStu(student);
    }

    @Override
    public Student findById(int stuId) {
        return studentDao.findById(stuId);
    }

    @Override
    public List<Student> findAll() {
        return studentDao.findAll();
    }

    @Override
    public boolean isNext(int i,boolean flag2) {
        boolean flag3 = true;
        while (flag3){
            switch (i){
                case 1:
                    flag2 = false;
                    flag3 = false;
                    break;
                case 2:
                    flag2 = true;
                    flag3 = false;
                    break;
                default:
                    flag3 = true;
                    flag2 = true;
                    break;
            }
        }
        return flag2;
    }
}

IStudentService.java

package com.zr.service;

import com.zr.bean.Student;

import java.util.List;

public interface IStudentService {
    //增加
    boolean add(Student student);
    //删除
    boolean delStu(int stuId);
    //修改
    boolean updStu(Student student);
    //单查询
    Student findById(int stuId);
    //全查
    List<Student> findAll();
    //判断功能是否继续
    boolean isNext(int i,boolean flag2);
}

TesrSpring.java

package com.zr.test;

import com.zr.bean.Student;
import com.zr.service.impl.StudentServiceImpl;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

/**
 * @Author VVcat
 * @Date 2019/10/11 15:12
 **/
public class TesrSpring {

    //加载配置文件applicationContext.xml
    ApplicationContext ac = new ClassPathXmlApplicationContext("/applicationContext.xml");

    @Test
    public void addStu(){
        //1.创建对象
        Student student = new Student("fantasy","男",5);
        //2.获取自动创建的对象 -IOC
        StudentServiceImpl ssi = (StudentServiceImpl) ac.getBean("studentServiceImpl");
        boolean b = ssi.add(student);
        if (b){
            System.out.println("学生添加成功");
        }else {
            System.out.println("学生添加失败");
        }
    }

    @Test
    public void findById(){
        StudentServiceImpl ssi = (StudentServiceImpl) ac.getBean("studentServiceImpl");
        Student student = ssi.findById(1);
        System.out.println("单次查询到的学生信息为"+student.toString());
    }

    @Test
    public void findAll(){
        StudentServiceImpl ssi = (StudentServiceImpl) ac.getBean("studentServiceImpl");
        List<Student> studentList = ssi.findAll();
        for (Student student:studentList){
            System.out.println("获取到的每一个对象是:\n"+student);
        }
    }
}

resources目录

applicationContext.xml 配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!--  1.提供注解支持  -->
    <context:component-scan base-package="com.zr"/>

    <!--  2.配置数据源  -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/item?useSSL=true&amp;characterEncoding=utf-8"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    </bean>

    <!--  3.创建JDBCTemplate对象，注入dataSource  -->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>


</beans>

数据库

item.sql

CREATE DATABASE item;
USE `item`;
CREATE TABLE `tb_student` (
  `id` INT(11) NOT NULL AUTO_INCREMENT,
  `name` VARCHAR(50) NULL,
  `sex` VARCHAR(50) NULL,
  age INT(10) NULL,
  PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=1  CHARSET=utf8;

效果展示

界面

添加功能

查询功能

查询全部功能

删除功能

更改功能