springcloud微服务demo

springcloud依托于springBoot，springBoot可以离开springcloud，

但是springcloud不可以离开springBoot

 

　　Spring Boot 是 Spring 的一套快速配置脚手架，可以基于Spring Boot 快速开发单

 

　　个微服务，Spring Cloud是一个基于Spring Boot实现的云应用开发工具；Spring Boot专

 

　　注于快速、方便集成的单个微服务个体，Spring Cloud关注全局的服务治理框架；

 

 

像下图这样建立项目

01中的pom.xml

<?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.offcn</groupId> <artifactId>microservice_cloud_01</artifactId> <packaging>pom</packaging> <version>1.0-SNAPSHOT</version> <modules> <module>microservice_cloud_02_api</module> <module>microservice_cloud_03_provider_product_8001</module> </modules> <!--手动制定pom--> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.7.RELEASE</version> </parent> <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> <spring-cloud.version>Finchley.SR2</spring-cloud.version> </properties> <!--依赖声明--> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.12</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.13</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> <scope>test</scope> </dependency> </dependencies> </project>

 在microservice_cloud_02_api中创建一个实体类

 

package com.yuan.springcloud.entities;

public class Product { //跨服调用必须实现序列化
    private long id;
    private String productName;
    private String dbSource;

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getProductName() {
        return productName;
    }

    public void setProductName(String productName) {
        this.productName = productName;
    }

    public String getDbSource() {
        return dbSource;
    }

    public void setDbSource(String dbSource) {
        this.dbSource = dbSource;
    }

    @Override
    public String toString() {
        return "Product{" +
                "id=" + id +
                ", productName='" + productName + '\'' +
                ", dbSource='" + dbSource + '\'' +
                '}';
    }
}

 

microservice_cloud_02_api中的pom.xml

<?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>microservice_cloud_01</artifactId>
        <groupId>com.offcn</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>microservice_cloud_02_api</artifactId>
</project>

 

03中的建立controller、service、mapper

 

productmapper应放入resources-》mapper中否则会报错

 

application.yml配置文件

 

server:
  port: 8001
mybatis:
  config-location: classpath:mybatis/mybatis.cfg.xml
  type-aliases-package: com.yuan.springcloud.entities
  mapper-locations: classpath:mybatis/mapper/**/*.xml
spring:
  application:
  name: microservice-product
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/springcloud_db01?serverTimezone=GMT%2B8
    username: root
    password: root
    dbcp2:
      min-idle: 5
      initial-size: 5
      max-total: 5
      max-wait-millis: 150