SpringCloud_牛客博客

1.主项目pom父类

</modules>
    <!--打包方式-->
    <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>
    </properties>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--  springboot-->
            <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>8.0.15</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.5.2</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.1.10</version>
            </dependency>
            <!--   启动器-->
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.3.2</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>1.16.10</version>
            </dependency>
            <!--  log4j-->
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
            </dependency>
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-core</artifactId>
                <version>1.2.3</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

2.前期准备
实体类

import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@SuppressWarnings("all")
@Data
@NoArgsConstructor
//@Accessors(chain = true)//序列化
public class Dept implements Serializable {
    private Long deptno;
    private String dname;
    private String db_source;

    public Dept(String dname) {
        this.dname = dname;
    }
}

springcloud-provider提供者
pom代码块

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

 <artifactId>springcloud-provider-dept-8001</artifactId>

 <dependencies>
     <!--拿到实体类-->
     <dependency>
         <groupId>com.chen</groupId>
         <artifactId>springcloud-api</artifactId>
         <version>1.0-SNAPSHOT</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-test</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-jetty</artifactId>
     </dependency>
     <!--热部署工具-->
     <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-devtools</artifactId>
     </dependency>
 </dependencies>
</project>

接口dao层

package com.chen.springcloud.dao;

import com.chen.springcloud.pojo.Dept;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;

import java.util.List;

@Mapper
@Repository
@SuppressWarnings("all")
public interface DeptDao {
    public boolean addDept(Dept dept);
    public Dept queryById(Long id);
    public List<Dept> queryAll();
}

服务层service
接口

package com.chen.springcloud.service;

import com.chen.springcloud.pojo.Dept;

import java.util.List;

    public interface DeptService {
        public boolean addDept(Dept dept);
        public Dept queryById(Long id);
        public List<Dept> queryAll();
}

接口实现类

package com.chen.springcloud.service;

import com.chen.springcloud.dao.DeptDao;
import com.chen.springcloud.pojo.Dept;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
@SuppressWarnings("all")
public class DeptServiceImpl implements DeptService {
    @Autowired
    private DeptDao deptDao;
    @Override
    public boolean addDept(Dept dept) {
        return deptDao.addDept(dept);
    }

    @Override
    public Dept queryById(Long id) {
        return deptDao.queryById(id);
    }

    @Override
    public List<Dept> queryAll() {
        return deptDao.queryAll();
    }
}

控制层controller

package com.chen.springcloud.controller;

import com.chen.springcloud.pojo.Dept;
import com.chen.springcloud.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
public class DeptController {
    @Autowired
    private DeptService deptService;

    @PostMapping("/dept/add")
    public boolean addDept(Dept dept) {
        return deptService.addDept(dept);
    }

    @GetMapping("/dept/get/{id}")
    public Dept queryById(@PathVariable("id") Long id) {
        return deptService.queryById(id);
    }

    @GetMapping("/dept/list")
    public List<Dept> queryAll() {
        return deptService.queryAll();
    }
}

资源配置
application.yaml

server:
  port: 8001
  #mybatis配置
mybatis:
  type-aliases-package: com.chen.springcloud.pojo
  config-location: classpath:mybatis/mybatis-config.xml
  mapper-locations: classpath:mybatis/mapper/*.xml
  #spring配置
spring:
  application:
    name: springcloud-provider-dept
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/db01?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    username: root
    password: 123456

mapper.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.chen.springcloud.dao.DeptDao">
    <insert id="addDept" parameterType="Dept">
        insert into dept (dname, db_source)values (#{dname} ,DATABASE())
        </insert>
    <select id="queryById" resultType="Dept" parameterType="Long">
select * from dept where deptno = #{deptno} ;
</select>
    <select id="queryAll" resultType="Dept">
        select *from dept;
    </select>


</mapper>

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
        <!DOCTYPE configuration
                PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
                "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
    <!--开启缓存-->
    <setting name="cacheEnabled" value="true"/>
</settings>
</configuration>

自启动类

package com.chen.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DeptProvider_8001 {
    public static void main(String[] args) {
        SpringApplication.run(DeptProvider_8001.class,args);
    }
}

4.springcloud-consumer
配置RestTemplate（因为Eureka基于Rest开发）注册Bean
ConfigBean.class

package com.chen.springcloud.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 getRestTemplate()
    {
        return new RestTemplate();
    }
}

消费者调用方式
controller层

package com.chen.springcloud.controller;

import com.chen.springcloud.pojo.Dept;
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 java.util.List;

@RestController
@SuppressWarnings("all")
public class DeptConsumerController {
    @Autowired
private RestTemplate restTemplate; //提供多种便捷访问远程http服务点方法
    private static final String REST_URL_PREFIX = "http://localhost:8001";
    @RequestMapping( "/consumer/dept/get/{id}")
    public Dept get(@PathVariable("id") Long id){
        return restTemplate.getForObject(REST_URL_PREFIX+"/dept/get/"+id,Dept.class);
    }
    @RequestMapping("/consumer/dept/add")
    public boolean add(Dept dept)
    {
        return restTemplate.postForObject(REST_URL_PREFIX+"/dept/add",dept,Boolean.class);
    }
    @RequestMapping("/consumer/dept/list")
    public List<Dept> list()
    {
        return restTemplate.getForObject(REST_URL_PREFIX+"/dept/list",List.class);

    }

}

自启动类

package com.chen.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DeptConsumer_80 {
    public static void main(String[] args) {
        SpringApplication.run(DeptConsumer_80.class,args);
    }
}

实例图

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祝你成功

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