创建一个普通的Maven项目
pom.xml父工程
<?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.kuang</groupId>
<artifactId>springcloud</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
<junit.version>4.12</junit.version>
<lombok.version>1.16.10</lombok.version>
<log4j.version>1.2.17</log4j.version>
</properties>
<!-- 打包方式 pom -->
<packaging>pom</packaging>
<dependencyManagement>
<dependencies>
<!-- springCloud依赖 作为版本管理依赖,所以类型是pom,在导入依赖的时候生效 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- springBoot依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>2.1.4.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- 数据库 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!--druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<!--mybatis -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<!-- logback-core 日志核心包 日志和测试 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.2.3</version>
</dependency>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
</dependency>
<!--lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
</dependency>
<!-- log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
</project>
创建数据库
文章来源地址https://www.toymoban.com/news/detail-652131.html
insert into dept(dname, db_source) values ('开发部',database());
insert into dept(dname, db_source) values ('人事部',database());
insert into dept(dname, db_source) values ('财务部',database());
insert into dept(dname, db_source) values ('市场部',database());
insert into dept(dname, db_source) values ('运维部',database());
select * from dept
springcloud-api pom
<?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">
<parent>
<artifactId>springcloud</artifactId>
<groupId>com.kuang</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>springcloud-api</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<!-- 当前的Moudle 自己需要的依赖,如果父依赖中已经配置了版本,这里就不用写了 -->
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
</project>
实体类
package com.kuang.springcloud.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;
import java.io.Serializable;
@NoArgsConstructor
@Accessors(chain = true)//链式写法
@Data
//实现序列化 实体类 ORM映射 mysql--dept
public class Dept implements Serializable {
private Long deptno;//主键
private String dname;
//这个数据库存在哪个数据库字段。~微服务,一个服务对应一个数据库,同一个信息可能存在不同的数据库
private String db_source;
public Dept(String dname) {
this.dname = dname;
}
/**
* 链式写法:
*Dept dept = new Dept();
* dept.setDeptNo(11).setDbane('sss').setDb_source("001");
*/
}
springcloud-provider-dept-8001 第二个子模块
POM
<?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">
<parent>
<artifactId>springcloud</artifactId>
<groupId>com.kuang</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>springcloud-provider-dept-8001</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<!-- 我们需要拿到实体类 ,所以要配置api Model -->
<dependency>
<groupId>com.kuang</groupId>
<artifactId>springcloud-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<!-- Mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
<!-- logback - core -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
</dependency>
<!-- mybatis -springboot -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<!-- test -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-test</artifactId>
</dependency>
<!-- springboot-web -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- jetty 服务器 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jetty</artifactId>
</dependency>
<!-- 热部署 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
</dependencies>
</project>
YML
server:
port: 8001
#mybatis配置
mybatis:
type-aliases-package: com.kuang.springcloud.pojo
config-location: classpath:mybatis/mybatis-config.xml
mapper-locations: classpath:mybatis/mapper/*.xml
# configuration: 这个配置驼峰命名转化为键值映射
# map-underscore-to-camel-case: true
#spring配置
spring:
application:
name: springcloud-provider-dept
datasource:
type: com.alibaba.druid.pool.DruidDataSource #数据源
driver-class-name: org.gjt.mm.mysql.Driver
url: jdbc:mysql://localhost:3306/db01?useUnicode=true&characterEncoding=utf-8&useSSL=false
username: root
password: 2001
mapper
package com.kuang.springcloud.dao;
import com.kuang.springcloud.pojo.Dept;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
@Mapper
public interface DeptMapper {
int addDept(Dept dept);
Dept queryDeptById(Long id);
List<Dept> queryAll();
}
mapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD mapper 3.0//EN"
"https://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kuang.springcloud.dao.DeptMapper">
<delete id="addDept" parameterType="Dept">
inner join dept(dname,db_source)
values (#{dname},DATABASE())
</delete>
<select id="queryDeptById" resultType="com.kuang.springcloud.pojo.Dept">
select * from dept where deptno =#{id}
</select>
<select id="queryAll" resultType="com.kuang.springcloud.pojo.Dept">
select * from dept
</select>
</mapper>
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"https://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 开启二级缓存 -->
<setting name="cacheEnabled" value="true"/>
</settings>
</configuration>
Service
package com.kuang.springcloud.service;
import com.kuang.springcloud.pojo.Dept;
import java.util.List;
public interface DeptService {
int addDept(Dept dept);
Dept queryDeptById(Long id);
List<Dept> queryAll();
}
ServiceImpl
package com.kuang.springcloud.service.impl;
import com.kuang.springcloud.dao.DeptMapper;
import com.kuang.springcloud.pojo.Dept;
import com.kuang.springcloud.service.DeptService;
import lombok.experimental.Accessors;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class DeptServiceImpl implements DeptService {
@Autowired
private DeptMapper deptMapper;
@Override
public int addDept(Dept dept) {
return deptMapper.addDept(dept);
}
@Override
public Dept queryDeptById(Long id) {
return deptMapper.queryDeptById(id);
}
@Override
public List<Dept> queryAll() {
return deptMapper.queryAll();
}
}
Controller
package com.kuang.springcloud.controller;
import com.kuang.springcloud.pojo.Dept;
import com.kuang.springcloud.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
//提供Restful服务
@RestController
public class DeptController {
@Autowired
private DeptService deptService;
@PostMapping("/dept/add")
public String addDept(Dept dept){
int i = deptService.addDept(dept);
if (i>0){
return "添加成功";
}
return "添加失败";
}
@GetMapping("/dept/get/{id}")
public Dept getDept(@PathVariable("id")Long id){
Dept dept = deptService.queryDeptById(id);
return dept;
}
@GetMapping("/dept/list")
public List<Dept> getAll(){
return deptService.queryAll();
}
}
主启动类
package com.kuang.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DeptApplicationProvider {
public static void main(String[] args) {
SpringApplication.run(DeptApplicationProvider.class,args);
}
}
文章来源:https://www.toymoban.com/news/detail-652131.html
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