springboot增删改查案例
github地址
https://github.com/daily11/springboot
1 目录结构
2 依赖
2.1 POM依赖
org.springframework.boot
spring-boot-starter-web
mysql
mysql-connector-java
runtime
org.mybatis.spring.boot
mybatis-spring-boot-starter
2.0.1
com.alibaba
druid-spring-boot-starter
1.1.9
org.apache.httpcomponents
httpclient
4.3.1
com.alibaba
fastjson
1.1.41
2.2 数据库配置类
package com.swust.springboot.config;
import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
// 扫描 Mapper 接口并容器管理
@MapperScan(basePackages = MybatisDB.PACKAGE, sqlSessionFactoryRef = "localSqlSessionFactory")
public class MybatisDB {
// 精确到 local 目录，以便跟其他数据源隔离
static final String PACKAGE = "com.swust.springboot.dao";
static final String MAPPER_LOCATION = "classpath:mapper/*.xml";
@Value("${local.datasource.url}")
private String url;
@Value("${local.datasource.username}")
private String user;
@Value("${local.datasource.password}")
private String password;
@Value("${local.datasource.driverClassName}")
private String driverClass;
@Bean(name = "localDataSource")
public DataSource localDataSource() {
DruidDataSource localSource = new DruidDataSource();
localSource.setDriverClassName(driverClass);
localSource.setUrl(url);
localSource.setUsername(user);
localSource.setPassword(password);
return localSource;
}
@Bean(name = "localTransactionManager")
public DataSourceTransactionManager localTransactionManager() {
return new DataSourceTransactionManager(localDataSource());
}
@Bean(name = "localSqlSessionFactory")
public SqlSessionFactory localSqlSessionFactory(@Qualifier("localDataSource") DataSource localDataSource)
throws Exception {
final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(localDataSource);
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources(MybatisDB.MAPPER_LOCATION));
return sessionFactory.getObject();
}
}
2.3 配置文件
# 应用端口号
server.port=8080
# bdgisbase 数据库地址
local.datasource.url=jdbc:mysql://localhost:3306/permission?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
local.datasource.driverClassName=com.mysql.cj.jdbc.Driver
local.datasource.username=root
local.datasource.password=root3 controller
package com.swust.springboot.controller;
import com.swust.springboot.aop.DemoAnnotationService;
import com.swust.springboot.entity.BookDO;
import com.swust.springboot.service.BookService;
import com.swust.springboot.utils.CODE;
import com.swust.springboot.utils.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
import java.util.Map;
@RestController
public class BookController {
@Autowired
private BookService bookService;
@Autowired
private DemoAnnotationService demoAnnotationService;
@RequestMapping(value = "/selectByIdReturnMap", method = RequestMethod.POST)
private Result selectByIdReturnMap() {
List4 service
package com.swust.springboot.service.impl;
import com.swust.springboot.dao.BookDao;
import com.swust.springboot.entity.BookDO;
import com.swust.springboot.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.Map;
@Service
public class BookServiceImpl implements BookService {
@Autowired
private BookDao bookDao;
@Override
public List5 dao
package com.swust.springboot.dao;
import com.swust.springboot.entity.BookDO;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;
import java.util.List;
import java.util.Map;
@Repository
public interface BookDao {
/**
* 查询书记录
*
* @param name 书名
* @return
*/
BookDO selectByName(@Param("bookName") String name);
/**
* 查询书记录
* 以map形式返回
*
* @return
*/
List6 entity
package com.swust.springboot.entity;
import java.util.Date;
public class BookDO {
private Long id;
private String name;
private Date gmtCreate;
private Date gmtModified;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getGmtCreate() {
return gmtCreate;
}
public void setGmtCreate(Date gmtCreate) {
this.gmtCreate = gmtCreate;
}
public Date getGmtModified() {
return gmtModified;
}
public void setGmtModified(Date gmtModified) {
this.gmtModified = gmtModified;
}
@Override
public String toString() {
return "BookDO{" +
"id=" + id +
", name='" + name + '\'' +
", gmtCreate=" + gmtCreate +
", gmtModified=" + gmtModified +
'}';
}
}
7 mapper
id,name,gmt_create,gmt_modified
delete from book where id = #{bookId}
INSERT INTO book
gmt_create,
gmt_modified,
name,
#{gmtCreate},
#{gmtModified},
#{name},
update book
name=#{name},
gmt_modified = sysdate()
and id = #{id}
and id = #{id}
and name = #{name}
and gmt_create = #{gmtCreate}
and gmt_modified = #{gmtModified}
8 工具类
package com.swust.springboot.utils;
public class CODE {
//前端访问请求成功
public static final int SUCCESS = 200;
//前端访问请求失败
public static final int ERROR = 500;
//账号状态 禁用
public static final int ACCOUT_LOCK = 0;
//账号状态 正常
public static final int ACCOUT_UNLOCK = 1;
}
package com.swust.springboot.utils;
public class Result {
private int code;
private Object data;
private String msg;
public Result(int code, Object data, String msg) {
this.code = code;
this.data = data;
this.msg = msg;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public Object getData() {
return data;
}
public void setData(Object data) {
this.data = data;
}
}
9 数据库SQL文件
/*
Navicat Premium Data Transfer
Source Server : localhost
Source Server Type : MySQL
Source Server Version : 50549
Source Host : localhost:3306
Source Schema : springboot
Target Server Type : MySQL
Target Server Version : 50549
File Encoding : 65001
Date: 02/09/2019 14:18:24
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for book
-- ----------------------------
DROP TABLE IF EXISTS `book`;
CREATE TABLE `book` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`name` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
`gmt_create` timestamp NULL DEFAULT NULL,
`gmt_modified` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
-- ----------------------------
-- Records of book
-- ----------------------------
INSERT INTO `book` VALUES (2, 'cyx', '2019-09-02 13:59:04', '2019-09-02 14:03:58');
INSERT INTO `book` VALUES (3, 'zou', '2019-09-02 14:12:14', '2019-09-02 14:12:14');
SET FOREIGN_KEY_CHECKS = 1;