二、springcloud微服务测试环境搭建
版本说明：
springcloud:Greenwich.SR3
springboot:2.1.8
1、构建步骤
1.1、microservicecloud整体父工程Project
新建父工程microservicecloud，切记是Packageing是pom模式
此maven project目的：主要是定义POM文件，将后续各个子模块公用的jar包等统一提出来，类似一个抽象父类
pom.xml
<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>4.0.0modelVersion>
<groupId>com.jiatp.springcloudgroupId>
<artifactId>microservicecloudartifactId>
<version>0.0.1-SNAPSHOTversion>
<packaging>pompackaging>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.8maven.compiler.source>
<maven.compiler.target>1.8maven.compiler.target>
<junit.version>4.12junit.version>
<log4j.version>1.2.17log4j.version>
<lombok.version>1.18.10lombok.version>
properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-dependenciesartifactId>
<version>Greenwich.SR3version>
<type>pomtype>
<scope>importscope>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-dependenciesartifactId>
<version>2.1.8.RELEASEversion>
<type>pomtype>
<scope>importscope>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.0.4version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.1.20version>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>2.1.0version>
dependency>
<dependency>
<groupId>ch.qos.logbackgroupId>
<artifactId>logback-coreartifactId>
<version>1.2.3version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>${junit.version}version>
<scope>testscope>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>${log4j.version}version>
dependency>
dependencies>
dependencyManagement>
<build>
<finalName>microservicecloudfinalName>
<resources>
<resource>
<directory>src/main/resourcesdirectory>
<filtering>truefiltering>
resource>
resources>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-resources-pluginartifactId>
<configuration>
<delimiters>
<delimit>$delimit>
delimiters>
configuration>
plugin>
plugins>
build>
<modules>
<module>microservicecloud-apimodule>
<module>microservicecloud-provider-dept-8001module>
<module>microservicecloud-consumer-dept-80module>
modules>
project>
1.2、microservicecloud-api公共子模块Module
右击父工程microservicecloud新建maven module，Packageing是jar模式,创建完成后请回到父工程查看pom文件。
pom.xml
<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>4.0.0modelVersion>
<parent>
<groupId>com.jiatp.springcloudgroupId>
<artifactId>microservicecloudartifactId>
<version>0.0.1-SNAPSHOTversion>
parent>
<artifactId>microservicecloud-apiartifactId>
<dependencies>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
dependency>
dependencies>
project>
新建部门Entity且配合lombok使用
package com.atguigu.springcloud.entities;
import java.io.Serializable;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;
@SuppressWarnings("serial")
@NoArgsConstructor
@Data
@Accessors(chain=true)
public class Dept implements Serializable //必须序列化
{
private Long deptno; //主键
private String dname; //部门名称
private String db_source;//来自那个数据库，因为微服务架构可以一个服务对应一个数据库，同一个信息被存储到不同数据库
public Dept(String dname)
{
super();
this.dname = dname;
}
}
右键microservicecloud-api选择Run as ,先mvn clean 后maven install后给其它模块引用，达到通用目的。
也即需要用到部门实体的话，不用每个工程都定义一份，直接引用本模块即可。
1.3、microservicecloud-provider-dept-8001微服务提供者Module
1、新建microservicecloud-provider-dept-8001 提供者Module,同理
2、pom.xml
<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>4.0.0modelVersion>
<parent>
<groupId>com.jiatp.springcloudgroupId>
<artifactId>microservicecloudartifactId>
<version>0.0.1-SNAPSHOTversion>
parent>
<artifactId>microservicecloud-provider-dept-8001artifactId>
<dependencies>
<dependency>
<groupId>com.jiatp.springcloudgroupId>
<artifactId>microservicecloud-apiartifactId>
<version>${project.version}version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
dependency>
<dependency>
<groupId>ch.qos.logbackgroupId>
<artifactId>logback-coreartifactId>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-jettyartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>springloadedartifactId>
<version>1.2.6.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
dependency>
dependencies>
project>
3、application.yml
server:
port: 8001
mybatis:
config-location: classpath:mybatis/mybatis.cfg.xml # mybatis配置文件所在路径
type-aliases-package: com.jiatp.springcloud.entity # 扫描此包下的entity ->所有entity别名类所在包
mapper-locations:
- classpath:mybatis/mapper/**/*.xml # mapper映射文件
spring:
application:
name: microservicecloud-dept # 很重要，对外暴露的微服务名字
datasource:
type: com.alibaba.druid.pool.DruidDataSource # 数据源类型
driver-class-name: org.gjt.mm.mysql.Driver # 数据库驱动包
url: jdbc:mysql://localhost:3306/cloudDB01?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone = GMT
username: root
password: 123456
dbcp2:
min-idle: 5 # 数据库连接池的最小维持连接数
initial-size: 5 # 初始化连接数
max-idle: 5 # 最大连接数
4、工程src/main/resources目录下新建mybatis文件夹后新建mybatis.cfg.xml文件
<configuration>
<settings>
<setting name="cacheEnabled" value="true"/>
settings>
configuration>
4、创建cloudDB01 数据库，新建dept表并且插入数据
5、编写DeptMapper接口
package com.jiatp.springcloud.dao;
import java.util.List;
import org.apache.ibatis.annotations.Mapper;
import com.jiatp.springcloud.entity.Dept;
@Mapper
public interface DeptDao {
public boolean addDept(Dept dept);
public Dept findById(Long id);
public List<Dept> findAll();
}
6、工程src/main/resources/mybatis目录下新建mapper文件夹后再建DeptMapper.xml
注意：这里如果采用注解方式，可以直接在DeptMapper接口上直接写sql语句
<mapper namespace="com.jiatp.springcloud.dao.DeptDao">
<select id="findById" resultType="Dept" parameterType="Long">
select deptno,dname,db_source from dept where deptno=#{deptno};
select>
<select id="findAll" resultType="Dept">
select deptno,dname,db_source from dept;
select>
<insert id="addDept" parameterType="Dept">
INSERT INTO dept(dname,db_source) VALUES(#{dname},DATABASE());
insert>
mapper>
7、DeptService和DeptServiceImpl部门服务接口和实现类
package com.jiatp.springcloud.service;
import java.util.List;
import com.jiatp.springcloud.entity.Dept;
public interface DeptService {
public boolean add(Dept dept);
public Dept get(Long id);
public List<Dept> list();
}
//---------------------------------------------
package com.jiatp.springcloud.service.impl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.jiatp.springcloud.dao.DeptDao;
import com.jiatp.springcloud.entity.Dept;
import com.jiatp.springcloud.service.DeptService;
@Service
public class DeptServiceImpl implements DeptService{
@Autowired
private DeptDao deptdao;
@Override
public boolean add(Dept dept) {
// TODO Auto-generated method stub
return deptdao.addDept(dept);
}
@Override
public Dept get(Long id) {
// TODO Auto-generated method stub
return deptdao.findById(id);
}
@Override
public List<Dept> list() {
// TODO Auto-generated method stub
return deptdao.findAll();
}
}
8、编写controller
@RestController
public class DeptController
{
@Autowired
private DeptService service;
@RequestMapping(value="/dept/add",method=RequestMethod.POST)
public boolean add(@RequestBody Dept dept)
{
return service.add(dept);
}
@RequestMapping(value="/dept/get/{id}",method=RequestMethod.GET)
public Dept get(@PathVariable("id") Long id)
{
return service.get(id);
}
@RequestMapping(value="/dept/list",method=RequestMethod.GET)
public List<Dept> list()
{
return service.list();
}
}
9、编写DeptProvider8001_App主启动类
@SpringBootApplication
public class DeptProvider8001_App
{
public static void main(String[] args)
{
SpringApplication.run(DeptProvider8001_App.class, args);
}
}
测试：http://localhost:8001/dept/get/2
1.4、microservicecloud-consumer-dept-80部门微服务消费者Module
1、新建microservicecloud-consumer-dept-80，同理
2、pom.xml
<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>4.0.0modelVersion>
<parent>
<groupId>com.jiatp.springcloudgroupId>
<artifactId>microservicecloudartifactId>
<version>0.0.1-SNAPSHOTversion>
parent>
<artifactId>microservicecloud-consumer-dept-80artifactId>
<description>部门微服务消费者description>
<dependencies>
<dependency>
<groupId>com.jiatp.springcloudgroupId>
<artifactId>microservicecloud-apiartifactId>
<version>${project.version}version>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>springloadedartifactId>
<version>1.2.6.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
dependency>
dependencies>
project>
3、yml配置
server:
port: 80
4、com.jiatp.springcloud包下ConfigBean的编写
类似spring里面的applicationContext.xml写入的注入Bean
@Configuration
public class ConfigBean { //优化spring,从spring(applicationContext.xml)== @Configuration配置
@Bean
@LoadBalanced //开启负载均衡
public RestTemplate restTemplate(){
return new RestTemplate();
}
RestTemplate提供了多种便捷访问远程Http服务的方法， 是一种简单便捷的访问restful服务模板类，是Spring提供的用于访问Rest服务的客户端模板工具集。 用法：使用restTemplate访问restful接口非常的简单粗暴无脑。
(url, requestMap, ResponseBean.class)这三个参数分别代表
REST请求地址、请求参数、HTTP响应转换被转换成的对象类型。
5、controller编写
@RestController
public class DeptController_Consumer
{
private static final String REST_URL_PREFIX = "http://localhost:8001";
@Autowired
private RestTemplate restTemplate;
@RequestMapping(value="/consumer/dept/add")
public boolean add(Dept dept)
{
return restTemplate.postForObject(REST_URL_PREFIX+"/dept/add", dept, Boolean.class);
}
@RequestMapping(value="/consumer/dept/get/{id}")
public Dept get(@PathVariable("id") Long id)
{
return restTemplate.getForObject(REST_URL_PREFIX+"/dept/get/"+id, Dept.class);
}
@SuppressWarnings("unchecked")
@RequestMapping(value="/consumer/dept/list")
public List<Dept> list()
{
return restTemplate.getForObject(REST_URL_PREFIX+"/dept/list", List.class);
}
}
6、DeptConsumer80_App主启动类
@SpringBootApplication
public class DeptConsumer80_App
{
public static void main(String[] args)
{
SpringApplication.run(DeptConsumer80_App.class, args);
}
}
测试：http://localhost/consumer/dept/list