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搭建基本环境：
1.导入数据库文件，创建department和employee两张表
2.创建JavaBean封装数据
3.springboot整合mybatis操作数据库（此处用的是注解版）
项目结构：
sql建表语句：
/*
Navicat MySQL Data Transfer
Source Server : 本地
Source Server Version : 50528
Source Host : 127.0.0.1:3306
Source Database : springboot_cache
Target Server Type : MYSQL
Target Server Version : 50528
File Encoding : 65001
Date: 2018-04-27 14:54:04
*/
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for department
-- ----------------------------
DROP TABLE IF EXISTS `department`;
CREATE TABLE `department` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`departmentName` varchar(255) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for employee
-- ----------------------------
DROP TABLE IF EXISTS `employee`;
CREATE TABLE `employee` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`lastName` varchar(255) DEFAULT NULL,
`email` varchar(255) DEFAULT NULL,
`gender` int(2) DEFAULT NULL,
`d_id` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
pom.xml: 目前所使用的jar包，通过maven导入
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.lucifer.springboot</groupId>
<artifactId>cache</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springboot-cache</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.15.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
实体类：
1.Departmentpackage com.lucifer.springboot.cache.bean;
public class Department {
private Integer id;
private String departmentName;
public Department() {
super();
// TODO Auto-generated constructor stub
}
public Department(Integer id, String departmentName) {
super();
this.id = id;
this.departmentName = departmentName;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getDepartmentName() {
return departmentName;
}
public void setDepartmentName(String departmentName) {
this.departmentName = departmentName;
}
@Override
public String toString() {
return "Department [id=" + id + ", departmentName=" + departmentName + "]";
}
}
2.Employee
package com.lucifer.springboot.cache.bean;
public class Employee {
private Integer id;
private String lastName;
private String email;
private Integer gender; //性别 1男 0女
private Integer dId;
public Employee() {
super();
}
public Employee(Integer id, String lastName, String email, Integer gender, Integer dId) {
super();
this.id = id;
this.lastName = lastName;
this.email = email;
this.gender = gender;
this.dId = dId;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Integer getGender() {
return gender;
}
public void setGender(Integer gender) {
this.gender = gender;
}
public Integer getdId() {
return dId;
}
public void setdId(Integer dId) {
this.dId = dId;
}
@Override
public String toString() {
return "Employee [id=" + id + ", lastName=" + lastName + ", email=" + email + ", gender=" + gender + ", dId="
+ dId + "]";
}
}
EmployeeMapper：mapper接口package com.lucifer.springboot.cache.mapper;
import com.lucifer.springboot.cache.bean.Employee;
import org.apache.ibatis.annotations.*;
public interface EmployeeMapper {
@Select("select * from employee where id = #{id}")
public Employee getEmpById(Integer id);
@Update("update employee set lastName=#{lastName},email=#{email},gender=#{gender},d_id=#{did} where id=#{id}")
public void updateEmp(Employee employee);
@Delete("delete * from employee where id=#{id}")
public void deleteEmp(Integer id);
@Insert("insert into Employee(lastName,email,gender,d_Id) values(#{lastName},#{email},#{gender},#{dId})")
public void insertEmp(Employee employee);
}
application.yml：springboot的配置文件
spring:
datasource:
url: jdbc:mysql://localhost:3306/springboot_cache
username: root
password: 123456
driver-class-name: com.mysql.jdbc.Driver
mybatis:
configuration:
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
map-underscore-to-camel-case: true
mybatis-config.xml： mybatis配置文件，和application.yml中的mybatis的注解一起使用，可以开启驼峰命名规则。
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 打印sql日志 -->
<setting name="logImpl" value="STDOUT_LOGGING" />
</settings>
</configuration>SpringbootCacheApplication：启动类
package com.lucifer.springboot.cache;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@MapperScan(basePackages = "com.lucifer.springboot.cache.mapper")
@SpringBootApplication
public class SpringbootCacheApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootCacheApplication.class, args);
}
}
ps:@MapperScan(basePackages = "com.lucifer.springboot.cache.mapper") 添加注解，并且指定扫描包，可以不需要在所有mapper接口中加@mapper注解了。
SpringbootCacheApplicationTests：springboot的测试类package com.lucifer.springboot.cache;
import com.lucifer.springboot.cache.bean.Employee;
import com.lucifer.springboot.cache.mapper.EmployeeMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mybatis.spring.annotation.MapperScan;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringbootCacheApplicationTests {
@Autowired
EmployeeMapper employeeMapper;
private static final Logger LOGGER= LoggerFactory.getLogger(SpringbootCacheApplicationTests.class);
@Test
public void contextLoads() {
Employee employee=new Employee();
employee.setLastName("Lucifer");
employee.setEmail("[email protected]");
employee.setGender(1);
employee.setdId(23);
employeeMapper.insertEmp(employee);
LOGGER.info(employee.getLastName());
}
}
运行SpringbootCacheApplicationTests类中的测试方法，如图，测试插入语句成功！！！！
接着创建controller和service----------》
EmployeeService:package com.lucifer.springboot.cache.service;
import com.lucifer.springboot.cache.bean.Employee;
import com.lucifer.springboot.cache.mapper.EmployeeMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* @author: Lucifer
* @create: 2018-09-21 14:05
* @description:
**/
@Service
public class EmployeeService {
@Autowired
EmployeeMapper employeeMapper;
public Employee getEmp(Integer id){
Employee empById = employeeMapper.getEmpById(id);
return empById;
}
}
EmployeeController:package com.lucifer.springboot.cache.controller;
import com.lucifer.springboot.cache.bean.Employee;
import com.lucifer.springboot.cache.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
/**
* @author: Lucifer
* @create: 2018-09-21 14:07
* @description:
**/
@RestController
public class EmployeeController {
@Autowired
EmployeeService employeeService;
@GetMapping(value = "/getEmp/{id}")
public Employee getEmployee(@PathVariable("id") Integer id){
Employee employee=employeeService.getEmp(id);
return employee;
}
}
启动SpringbootCacheApplication 类，浏览器输入：http://localhost:8080/getEmp/10
此时springboot-mybatis环境搭建成功！！！！