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springCloud

1、创建一个简单的springcloud项目

先看基本项目结构

 springcloud：父项目，总项目，对jar包版本等管控

springcloud-api：api主要是提供实体类的一个api模块

spring-cloud-provide-***-host：这个是一个服务提供方，提供服务（后台）

spring-cloud-consumer-host：这个是消费方（前台API）

下面对每个模块分析：

springcloud

pom：

<packaging>pom</packaging>
<!--    版本号-->
    <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>
    <dependencyManagement>
        <dependencies>
<!--            springcloud的依赖-->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.SR2</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>
<!--            数据源-->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.10</version>
            </dependency>
<!--            springboot启动器-->
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.3.2</version>
            </dependency>
<!--            主要用于日志和测试-->
<!--            log4j-->
            <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>
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-core</artifactId>
                <version>1.2.3</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

主要用来提供jar包版本管理

springcloud-api：

 Dept：

@Data
@NoArgsConstructor
@Accessors(chain = true)// 链式写法
public class Dept implements Serializable {

    private Integer deptId;
    private String deptName;
    // 这个数据存在哪个数据库的字段 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 dbSource;

    public Dept(String deptName, String dbSource) {
        this.deptName = deptName;
        this.dbSource = dbSource;
    }
}

注：务必实现序列化

spring-cloud-provide-***-host：服务提供方

 需要与数据库交互，基本的后端程序

pom文件：

<?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.zmd</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>spring-cloud-provide-dept-18021</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
<!--        首先我们需要拿到实体类，所以需要配置我们的api moudel-->
        <dependency>
            <groupId>com.zmd</groupId>
            <artifactId>springcloud-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <scope>test</scope>
        </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>
<!--        test-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>
<!--        jetty-->
        <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>
        <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
    </dependencies>

</project>

application：

server:
  port: 18021
#  mybatis配置
mybatis:
  type-aliases-package: com.zmd.springcloud.pojo
  mapper-locations: classpath:mybatis/mapper/*.xml
  config-location: classpath:mybatis/mybatis.xml
#  spring配置
spring:
  application:
    name: spring-cloud-provide-dept-18021
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: org.gjt.mm.mysql.Driver
    url: jdbc:mysql://localhost:3306/sringcloud01?serverTimezone=UTC&useUnicode=true&characterEncoding=UTF-8
    username: root
    password: root

spring-cloud-consumer-host；消费方

pom文件只需要导入web启动器还有api包

application只需要配置端口号重点是ConfigBean

ConfigBean：

package com.zmd.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class ConfigBean {

    @Bean
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

需要将RestTemplate交给spring管理

controller：

@RestController
@RequestMapping("consumer")
public class ConsumerController {
    @Autowired
    private RestTemplate restTemplate;

    @RequestMapping(value = "getDeptById",method = RequestMethod.POST)
    @ResponseBody
    public Dept getDeptById(Dept dept){
        System.out.println(dept);
        String url = "http://localhost:18021/deptController/selectById";

        return restTemplate.postForObject(url,dept,Dept.class);
    }

    @RequestMapping(value = "getDepts",method = RequestMethod.POST)
    @ResponseBody
    public List<Dept> getDepts(){
        String url = "http://localhost:18021/deptController/selectAll";
        return restTemplate.getForObject(url,List.class);
    }

    @RequestMapping(value = "addDept",method = RequestMethod.POST)
    @ResponseBody
    public Boolean addDept(Dept dept){
        String url = "http://localhost:18021/deptController/addDept";
        return restTemplate.postForObject(url,dept,Boolean.class);
    }
}

什么是Eureka

springCloud总结

标签：ons   OLE   vat   dev   selectall   ann   pass   lombok   rest   

原文地址：https://www.cnblogs.com/zmdbk/p/14863990.html