通过SpringBoot框架实现简单的学生管理系统的增删改查
简单的学生系统
SpringBoot因其其实就是简单、快速、方便！所以本文通过SpringBoot搭建一个简单的学生管理系统（持续更新）！
准备工作：
工具：Mysql，Idea，navicat(其他也可以),Postman，HbuilderX
准备工作：创建student表，表信息为：int id，varchar name，varchar age，varchar sex。
创建一个新的项目,
步骤：
点击Next，下一步。
设置好后，点击Next。
后端代码如下：
entity.java(实体层)
package com.kude.stu.kudestu.stu.entity;
import javax.persistence.*;
@Entity
@Table(name = "student") //必须和你创建的数据库名字一样
public class Student {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
private String name;
private String age;
private String sex;
public Student() {
}
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 getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return "Student{" +
"id=" + id +
", name='" + name + '\'' +
", age='" + age + '\'' +
", sex='" + sex + '\'' +
'}';
}
}
StudentDao.java(Dao层)
package com.kude.stu.kudestu.stu.dao;
import com.kude.stu.kudestu.stu.entity.Student;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
import java.util.List;
public interface StudentDao extends JpaRepository {
/**
* 通过Id查询成员信息
* @param id
* @return
*/
Student findStudentById(Integer id);
/**
* 通过Name查询成员信息
* @param name
* @return
*/
@Query(name = "findStuByName",nativeQuery = true,value =
"select * from student where name=:name")
List findStuByName(@Param("name") String name);
void deleteById(Integer id);
}
StudentService .java（Service层）
package com.kude.stu.kudestu.stu.service;
import com.kude.stu.kudestu.stu.entity.Student;
import org.springframework.data.domain.Page;
import java.util.List;
public interface StudentService {
Student save(Student student);
Student update(Student student);
void delete(Integer id);
Student findStuById(Integer id);
List findStuByName(String name);
/**
*分页查询所有页
* @param page 当前页，
* @param pageSize 每页几条数据
* @return
*/
Page findAll(int page,int pageSize);
}
StudentServiceImpl.java(实现Service层的接口)
package com.kude.stu.kudestu.stu.service;
import com.kude.stu.kudestu.stu.dao.StudentDao;
import com.kude.stu.kudestu.stu.entity.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class StudentServiceImpl implements StudentService {
@Autowired
private StudentDao studentDao;
@Override
public Student save(Student student) {
return studentDao.save(student);
}
@Override
public Student update(Student student) {
return studentDao.save(student);
}
@Override
public void delete(Integer id) {
studentDao.deleteById(id);
}
@Override
public Student findStuById(Integer id) {
return studentDao.findStudentById(id);
}
@Override
public List findStuByName(String name) {
return studentDao.findStuByName(name);
}
/**
*
* @param page 当前页，
* @param pageSize 每页几条数据
* @return
*/
@Override
public Page findAll(int page,int pageSize) {
Pageable pageble= PageRequest.of(page,pageSize);
return studentDao.findAll(pageble);
}
}
StudentController.javapackage com.kude.stu.kudestu.stu.controller;
import com.kude.stu.kudestu.stu.entity.Student;
import com.kude.stu.kudestu.stu.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletResponse;
import java.util.List;
@RestController
@RequestMapping("/s")
public class StudentController {
@Autowired
private StudentService studentService;
/**
* 添加学生
* @param student 参数
* @return
*/
@PostMapping("/add")
public Student save(Student student){
return studentService.save(student);
}
/**
* 更新学生信息
* @param student 参数
* @return
*/
@PostMapping("/update")
public Student update(@PathVariable("id") Student student){
return studentService.update(student);
}
/**
* 删除学生信息
* @param id
*/
@GetMapping("/del/{id}")
public String delete(@PathVariable int id){
studentService.delete(id);
return "delete yes";
}
/**
* 通过名字查询学生信息
* @param name
* @return
*/
@GetMapping("/findByName/{name}")
public List findStuByName(@PathVariable String name){
return studentService.findStuByName(name);
}
/**
* 分页查询所有学生信息
* @param
* @return
*/
@GetMapping("/query")
public Page findByPage(Integer page ,HttpServletResponse response){
response.setHeader("Access-Control-Allow-Origin","*");//异步请求响应头
if(page==null || page<=0){
page = 0;
}else{
page -= 1;
}
return studentService.findAll(page,5);
}
@GetMapping("/findById")
public Student findStuById(int id){
return studentService.findStuById(id);
}
}
application.properties （配置文件）
#数据源配置
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/stu?useSSL=false&useUnicode=true&characterEncoding=utf-8&autoReconnect=true&serverTimezone=Asia/Shanghai
#3306后面，3306/数据库名，不是表名
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.initialSize=20
spring.datasource.minIdle=50
spring.datasource.maxActive=500
#上下文配置
server.port=8888
server.servlet.context-path=/stu
#配置jpa
#帮我们自动生成表结构
spring.jpa.properties.hibernate.hbm2ddl.auto=update
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.show-sql= true
spring.jpa.properties.hibernate.enable_lazy_load_no_trans=truepom.xml (pom文件)
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.4.RELEASE
com.kude.stu
kudestu
0.0.1-SNAPSHOT
kudestu
Demo project for Spring Boot
1.8
org.springframework.boot
spring-boot-starter-data-jpa
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-devtools
runtime
mysql
mysql-connector-java
5.1.46
org.springframework.boot
spring-boot-starter-test
test
com.alibaba
druid
1.1.10
org.springframework.boot
spring-boot-maven-plugin
前端代码如下：
index.html
学生管理系统
添加学生
上一页 下一页
查询
add.html
Add
添加学生
xiugai.html
Xiugai
修改学生信息
chaxun.html
查询学生信息
jquery.js
点击复制粘贴到你的Jquery.js
运行结果：
码云上后端代码：https://gitee.com/LOL_toulan/SpringBootProject