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SpringCloud：搭建微服务项目框架 microservicecloud
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1.搭建整体父工程 microservicecloud
新建父工程microservicecloud，切记是Packageing是pom模式
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
1.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>4.0.0</modelVersion>
<groupId>com.fdzang.springcloud</groupId>
<artifactId>microservicecloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<junit.version>4.12</junit.version>
<log4j.version>1.2.17</log4j.version>
<lombok.version>1.16.18</lombok.version>
</properties> <dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>1.5.9.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.0.4</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.31</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.2.3</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
</dependencies>
</dependencyManagement> <build>
<finalName>microservicecloud</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<configuration>
<delimiters>
<delimit>$</delimit>
</delimiters>
</configuration>
</plugin>
</plugins>
</build>
</project>
2.公共子模块Module microservicecloud-api
在父工程下新建Maven Module
1.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>4.0.0</modelVersion>
<parent>
<groupId>com.fdzang.springcloud</groupId>
<artifactId>microservicecloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent> <artifactId>microservicecloud-api</artifactId> <dependencies><!-- 当前Module需要用到的jar包，按自己需求添加，如果父类已经包含了，可以不用写版本号 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
</project>
2.新建部门Entity且配合lombok使用
package com.fdzang.springcloud.entity;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 {// entity --orm--- db_table 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;
}}
3.生成jar
mvn clean --> mvn 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。
3. 部门微服务提供者Module microservicecloud-provider-dept-8001
在父工程下新建Maven Module
1.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>4.0.0</modelVersion>
<parent>
<groupId>com.fdzang.springcloud</groupId>
<artifactId>microservicecloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent> <artifactId>microservicecloud-provider-dept-8001</artifactId> <dependencies>
<!-- 引入自己定义的api通用包，可以使用Dept部门Entity -->
<dependency>
<groupId>com.fdzang.springcloud</groupId>
<artifactId>microservicecloud-api</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jetty</artifactId>
</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>
</dependency>
<!-- 修改后立即生效，热部署 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
</dependencies>
</project>
2.application.yml
server:
port: 8001mybatis:
config-location: classpath:mybatis/mybatis.cfg.xml # mybatis配置文件所在路径
type-aliases-package: com.fdzang.springcloud.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
datasource:
type: com.alibaba.druid.pool.DruidDataSource # 当前数据源操作类型
driver-class-name: org.gjt.mm.mysql.Driver # mysql驱动包
url: jdbc:mysql://localhost:3306/cloud01 # 数据库名称
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-total: 5 # 最大连接数
max-wait-millis: 200 # 等待连接获取的最大超时时间
3.工程src/main/resources目录下新建mybatis文件夹后新建mybatis.cfg.xml文件
<?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>
<setting name="cacheEnabled" value="true" /><!-- 二级缓存开启 -->
</settings>
</configuration>
4.MySQL创建部门数据库脚本
DROP DATABASE IF EXISTS cloud01;
CREATE DATABASE cloud01 CHARACTER SET UTF8;
USE cloud01;
CREATE TABLE dept
(
deptno BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT,
dname VARCHAR(60),
db_source VARCHAR(60)
);
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());
5.DeptDao部门接口
package com.fdzang.springcloud.dao;import java.util.List;import org.apache.ibatis.annotations.Mapper;import com.fdzang.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
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="com.fdzang.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部门服务接口
package com.fdzang.springcloud.service;import java.util.List;import com.fdzang.springcloud.entity.Dept;public interface DeptService
{
public boolean add(Dept dept); public Dept get(Long id); public List<Dept> list();
}
8.DeptServiceImpl部门服务接口实现类
package com.fdzang.springcloud.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import com.fdzang.springcloud.dao.DeptDao;
import com.fdzang.springcloud.entity.Dept;
import com.fdzang.springcloud.service.DeptService;@Service
public class DeptServiceImpl implements DeptService{
@Autowired
private DeptDao dao; @Override
public boolean add(Dept dept){
return dao.addDept(dept);
} @Override
public Dept get(Long id){
return dao.findById(id);
} @Override
public List<Dept> list(){
return dao.findAll();
}}
9.DeptController部门微服务提供者REST
package com.fdzang.springcloud.controller;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;import com.fdzang.springcloud.entity.Dept;
import com.fdzang.springcloud.service.DeptService;@RestController
public class DeptController{ @Autowired
private DeptService service; @Autowired
private DiscoveryClient client; @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();
}
}
10.DeptProvider8001_App主启动类DeptProvider8001_App
package com.fdzang.springcloud;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;@SpringBootApplication
public class DeptProvider8001_App
{
public static void main(String[] args)
{
SpringApplication.run(DeptProvider8001_App.class, args);
}
}
11.测试
http://localhost:8001/dept/list
4.部门微服务消费者Module microservicecloud-consumer-dept-80
1.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>4.0.0</modelVersion>
<parent>
<groupId>com.fdzang.springcloud</groupId>
<artifactId>microservicecloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>microservicecloud-consumer-dept-80</artifactId>
<description>部门微服务消费者</description> <dependencies>
<dependency><!-- 自己定义的api -->
<groupId>com.fdzang.springcloud</groupId>
<artifactId>microservicecloud-api</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 修改后立即生效，热部署 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
</dependencies>
</project>
2.application.yml
server:
port: 80
3.com.fdzang.springcloud.cfgbeans包下ConfigBean的编写
类似spring里面的applicationContext.xml写入的注入Bean
package com.fdzang.springcloud.cfgbeans;import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;import com.netflix.loadbalancer.IRule;
import com.netflix.loadbalancer.RetryRule;@Configuration
public class ConfigBean{ //boot -->spring applicationContext.xml --- @Configuration配置 ConfigBean = applicationContext.xml @Bean
public RestTemplate getRestTemplate(){
return new RestTemplate();
}}
4.com.fdzang.springcloud.controller包下新建DeptController_Consumer部门微服务消费者REST
package com.fdzang.springcloud.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import com.fdzang.springcloud.entity.Dept;
@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);
}
}
5.DeptConsumer80_App主启动类
package com.fdzang.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class DeptConsumer80_App
{
public static void main(String[] args)
{
SpringApplication.run(DeptConsumer80_App.class, args);
}
}
6.测试
http://localhost/consumer/dept/list
5.题外话之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
官网地址：https://docs.spring.io/spring-framework/docs/4.3.7.RELEASE/javadoc-api/org/springframework/web/client/RestTemplate.html
使用
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。
资料来源：www.atguigu.com 侵删
