springcloud项目中redis springcloud项目中entity

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技术领航博主 2023-09-27 18:50:07

文章标签 springcloud项目中redis spring maven xml 文章分类 Redis 数据库

创建API公共模块和部门Entity模块步骤

1.创建公共模块

首先Eclipse右键 New–>Other–>Maven Project

springcloud项目中redis springcloud项目中entity_spring

下一步

springcloud项目中redis springcloud项目中entity_maven_02

然后打开pom.xml

修改如下

<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>springcloud</groupId>
  <artifactId>microservicecloud</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  <!-- 公共配置变量 -->
   <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>

</project>

2.创建部门Entity模块

我们可以看到会有一个microservicecloud工程项目，在此右键 New–>Other–>Maven Module

springcloud项目中redis springcloud项目中entity_xml_03

点击下一步

选择Packaging为jar

springcloud项目中redis springcloud项目中entity_maven_04

创建完成之后我们打开microservicecloud工程项目的pom.xml文件可以看到会多出以下这些代码

<modules>
  	<module>servicecloud-api</module>
  </modules>

打开我们的servicecloud-api子模块的pom.xml，修改如下：

<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>
  <!-- 子类里面显示声明才能有明确的继承表现，无意外就是父类的默认版本否则自己定义 -->
  
    <groupId>springcloud</groupId>
    <artifactId>microservicecloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  
  <groupId>com.zs.springcloud</groupId>
  <!-- 当前Module我自己叫什么名字 -->
  <artifactId>servicecloud-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>

在servicecloud-api模块中创建dept类
如下：

@Data					//给属性提供getter/setter方法
@AllArgsConstructor		//提供全参构造器
@NoArgsConstructor		//提供无参构造器
@Accessors(chain=true)	//getter/setter方法为链式
/**
* public Dept setDeptno(Long id) {}
* public Dept getDeptno() {}
*/
public class Dept implements Serializable{
	private Long deptno;//主键
	private String dname;//部门名称
	private String db_source;//来自哪个数据库，因为微服务架构可以一个服务对应一个数据库，同一个信息被储存到不同的数据库
}

3.创建部门服务提供者

1).同样右键microservicecloud工程项目，在此右键 New–>Other–>Maven Module，创建名为 microservicecloud-provider-dept-8001，其中8001是该提供者的端口。
2).
修改pom.xml如下：

<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>springcloud</groupId>
    <artifactId>microservicecloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <groupId>com.zs.springcloud</groupId>
  <artifactId>microservicecloiud-provider-dept-8001</artifactId>
  
   <dependencies>
   <dependency><!-- 引入自己定义的api通用包，可以使用Dept部门Entity -->
     <groupId>com.zs.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>

3).
在src/main/resources工程目录中创建该节点的配置文件，application.yml，配置如下：

server:
  port: 8001
  
mybatis:
  config-location: classpath:mybatis/mybatis.cfg.xml        # mybatis配置文件所在路径
  type-aliases-package: com.zs.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/cloudDB01              # 数据库名称
    username: root
    password: 123qwe
    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

4).
在工程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>

5).
创建数据库的脚本

DROP DATABASE IF EXISTS cloudDB01;
CREATE DATABASE cloudDB01 CHARACTER SET UTF8;
USE cloudDB01;
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());
 
SELECT * FROM dept;

6).
在工程目录src/main/java/com/zs/dao创建DeptDao部门接口:

@Mapper
public interface DeptDao {
	
	public boolean addDept(Dept dept);
	
	public Dept findById(Long id);
	
	public List<Dept> findAll();
}

7).
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.zs.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>

8).
在工程目录src/main/java/com/zs/service创建DeptService部门服务接口

public interface DeptService
{
  public boolean add(Dept dept);
  public Dept    get(Long id);
  public List<Dept> list();
}

9).
在工程目录src/main/java/com/zs/service/impl创建DeptServiceImpl部门服务接口实现类

@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();
  }
 
}

10).
创建DeptController部门微服务提供者REST

@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();
  }
  
}

在父包下面创建application启动类DeptProvider8001_App

@SpringBootApplication
public class DeptProvider8001_App {
 
 public static void main(String[] args) {
   SpringApplication.run(DeptProvider8001_App.class, args);
 }
 
}

如图所示，点击SpringBoot App启动程序。

springcloud项目中redis springcloud项目中entity_maven_05

启动完成后可以在浏览器中输入：http://localhost:8001/dept/list 查看是否成功。
得到如下结果

[{"deptno":1,"dname":"开发部","db_source":"clouddb01"},
{"deptno":2,"dname":"人事部","db_source":"clouddb01"},
{"deptno":3,"dname":"财务部","db_source":"clouddb01"},
{"deptno":4,"dname":"市场部","db_source":"clouddb01"},
{"deptno":5,"dname":"运维部","db_source":"clouddb01"}]

4.创建部门消费者

1).
右键microservicecloud工程项目，在此右键 New–>Other–>Maven Module，创建名为 microservicecloud-consumer-dept-80，其中80是该提供者的端口。

2).
修改pom.xml文件：

<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>springcloud</groupId>
    <artifactId>microservicecloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <groupId>com.zs.springcloud</groupId>
  <artifactId>microservicecloude-consumer-dept-80</artifactId>
  <description>部门微服务消费者</description>
  <dependencies>
   <dependency><!-- 自己定义的api -->
     <groupId>com.zs.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>

3).
创建application.yml配置文件：

server:
  port: 80

4).
创建cfgbean包，在里面创建配置类ConfigBean

@Configuration
public class ConfigBean
{
    @Bean
    public RestTemplate getRestTemplate()
    {
         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
常用操作：
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).
com.zs.controller包下新建DeptController_Consumer部门微服务消费者REST

@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).
创建SpringBoot启动类DeptConsumer80_App

@SpringBootApplication
public class DeptConsumer80_App {

	public static void main(String[] args) {
		SpringApplication.run(DeptConsumer80_App.class,args);
	}
}

启动成功！
访问：http://localhost/consumer/dept/list
得到如下结果

[{"deptno":1,"dname":"开发部","db_source":"clouddb01"},
{"deptno":2,"dname":"人事部","db_source":"clouddb01"},
{"deptno":3,"dname":"财务部","db_source":"clouddb01"},
{"deptno":4,"dname":"市场部","db_source":"clouddb01"},
{"deptno":5,"dname":"运维部","db_source":"clouddb01"}]

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