springboot-data-jpa+vue实现前后端分离增删改分页查询
springboot-data-jpa+vue实现前后端分离增删改分页查询
废话不多说直接上代码
一.后台
1.实体类(pojo)
package com.wentao.springbootvue.pojo;
import lombok.Data;
import javax.persistence.*;
/**
* @BelongsProject: springdatajpaday1
* @BelongsPackage: com.wentao.springdatajpaday1.pojo
* @Author: 13274
* @CreateTime: 2019-06-03 14:22
* @Description: ${Description}
*/
@Entity
@Table(name = "student")
@Data
public class Student {
//id表示主键 主键有生成策略GenerationType.IDENTITY
//GenerationType.AUTO
//Oracle中是没有自动增长的设置SEQUENCE 使用序列进行增长
//GeneratedValue自动增长生成的values的值
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;//学生id
// @Column可以写可以不写
@Column(name = "name",columnDefinition = "varchar(25) comment '姓名'")
private String name;//姓名
@Column
private String sex;//性别
@Column
private Integer gradeId;//年级id
public Integer getId() {
return id;
}
public void setId(Integer 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 Integer getGradeId() {
return gradeId;
}
public void setGradeId(Integer gradeId) {
this.gradeId = gradeId;
}
}
2.dao层（dao）
package com.wentao.springbootvue.dao;
import com.wentao.springbootvue.pojo.Student;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
/**
* @BelongsProject: springdatajpaday1
* @BelongsPackage: com.wentao.springdatajpaday1.dao
* @Author: 13274
* @CreateTime: 2019-06-03 14:33
* @Description: ${Description}
*/
public interface StudentDao extends JpaRepository, JpaSpecificationExecutor {
}
3.业务层(service)
接口
package com.wentao.springbootvue.service;
import com.wentao.springbootvue.pojo.Student;
import org.springframework.data.domain.Page;
import java.util.List;
/**
* @BelongsProject: springdatajpaday1
* @BelongsPackage: com.wentao.springdatajpaday1.service
* @Author: 13274
* @CreateTime: 2019-06-03 14:36
* @Description: ${Description}
*/
public interface StudentService {
/**
* 增加学生的方法
* @param student 要增加学生的对象
* @return 返回学生对象
*/
Student add(Student student);
/**
* 修改学生的对象
* @param student 要增加学生的对象
* @return 返回学生对象
*/
Student upd(Student student);
/**
* 查询学生对象
* @return 返回查询到集合
*/
List seAll();
/**
* 删除学生的对象
* @param id 要删除学生的id
* @return 返回学生对象
*/
void del(Integer id);
/**
* 根据id查询学生对象
* @param id 要查询的id
* @return 返回查询的对象
*/
Student selById(Integer id);
/**
* 分页查询
* @param pageNum
* @param size
* @return
*/
Page findByPage(Integer pageNum, Integer size);
}
4.接口实现（impl）
package com.wentao.springbootvue.service.impl;
import com.wentao.springbootvue.dao.StudentDao;
import com.wentao.springbootvue.pojo.Student;
import com.wentao.springbootvue.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* @BelongsProject: springdatajpaday1
* @BelongsPackage: com.wentao.springdatajpaday1.service.impl
* @Author: 13274
* @CreateTime: 2019-06-03 14:41
* @Description: ${Description}
*/
@Service
public class StudentServiceImpl implements StudentService {
@Autowired
StudentDao studentDao;
/**
* 增加学生对象
* @param student 要增加学生的对象
* @return 返回学生对象
*/
@Override
public Student add(Student student) {
Student s=studentDao.save(student);
return s;
}
/**
* 修改学生对象
* @param student 要修改学生的对象
* @return返回学生对象
*/
@Override
public Student upd(Student student) {
return studentDao.save(student);
}
/**
* 查询学生
* @return 返回查询到的集合
*/
@Override
public List seAll() {
return studentDao.findAll();
}
/**
* 删除学生
* @param id 要删除学生的id
*/
@Override
public void del(Integer id) {
studentDao.deleteById(id);
}
/**
* 根据id查询学生
* @param id 要查询的id
* @return
*/
@Override
public Student selById(Integer id) {
return studentDao.findById(id).get();
}
/**
* 分页查询
* @param pageNum
* @param size
* @return
*/
@Override
public Page findByPage(Integer pageNum, Integer size) {
PageRequest pageRequest = PageRequest.of(pageNum - 1, size);
Page page= studentDao.findAll(pageRequest);
return page;
}
}
5.控制层（controller）
package com.wentao.springbootvue.controller;
import com.wentao.springbootvue.pojo.Student;
import com.wentao.springbootvue.service.StudentService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.web.bind.annotation.*;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @BelongsProject: springdatajpaday1
* @BelongsPackage: com.wentao.springdatajpaday1.controller
* @Author: 13274
* @CreateTime: 2019-06-03 14:55
* @Description: ${Description}
*/
@RestController
@Api(value = "swagger ui 注释 api 级别")
public class StudentController {
@Autowired
StudentService studentService;
Integer count;
@GetMapping("sell")
@ApiOperation(value = "查询所有学生",notes = "查询所有学生")
public Map selAll(Integer pageNum){
if (pageNum==null||pageNum==0){
pageNum=1;
}
if (count!=null&&pageNum>=count){
pageNum=count;
}
Page byPage = studentService.findByPage(pageNum, 2);
count= byPage.getTotalPages();
Map map =new HashMap();
map.put("data",byPage);
map.put("pageNum",pageNum);
return map;
}
@DeleteMapping("del")
public int del(Integer id){
try {
studentService.del(id);
return 1;
} catch (Exception e) {
return 0;
}
}
@PostMapping("add")
public Student add(@RequestBody Student student){
return studentService.add(student);
}
// @RequestMapping("selByid")
// public String selByid(Integer id,Model model){
// Student student=studentService.selById(id);
// model.addAttribute("student",student);
// return "upd";
// }
@PutMapping("upd")
public Student modifyStudent(Student student){
return studentService.upd(student);
}
}
6.备置层（config）
package com.wentao.springbootvue.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
@Configuration
@EnableSwagger2
public class SwaggerConfig {
@Bean
public Docket createRestApi() {
return new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
.select()
.apis(RequestHandlerSelectors.basePackage("com.wentao.springbootvue.controller"))
.paths(PathSelectors.any())
.build();
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder()
.title("Spring Boot中使用Swagger2实现前后端分离开发")
.description("此项目只是练习如何实现前后端分离开发的小Demo")
.termsOfServiceUrl("https://me.csdn.net/qq_42805685")
.contact("吴文涛")
.version("1.0")
.build();
}
}
package com.wentao.springbootvue.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class WebConfig implements WebMvcConfigurer {
//跨域配置
@Bean
public WebMvcConfigurer corsConfigurer() {
return new WebMvcConfigurer() {
@Override
//重写父类提供的跨域请求处理的接口
public void addCorsMappings(CorsRegistry registry) {
//添加映射路径
registry.addMapping("/**")
//放行哪些原始域
.allowedOrigins("*")
//是否发送Cookie信息
.allowCredentials(true)
//放行哪些原始域(请求方式)
.allowedMethods("GET", "POST", "PUT", "DELETE")
//放行哪些原始域(头部信息)
.allowedHeaders("*")
//暴露哪些头部信息（因为跨域访问默认不能获取全部头部信息）
.exposedHeaders("Header1", "Header2");
}
};
}
}
7.yml配置
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/studentjpa?characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8
password: root
username: root
jpa:
database: mysql
hibernate:
ddl-auto: update
naming:
physical-strategy: org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
implicit-strategy: org.hibernate.boot.model.naming.ImplicitNamingStrategyComponentPathImpl
show-sql: true
8.pom依赖包
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.5.RELEASE
com.wentao
springbootvue
0.0.1-SNAPSHOT
springbootvue
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
true
mysql
mysql-connector-java
runtime
org.projectlombok
lombok
true
org.springframework.boot
spring-boot-starter-test
test
io.springfox
springfox-swagger2
2.7.0
io.springfox
springfox-swagger-ui
2.7.0
org.springframework.boot
spring-boot-maven-plugin
上结构图
二. 前台