2.项目第一阶段服务者+消费者+架构
0.数据库
1.父项目pom(使用dependencyManagement标签管理依赖的版本)
<?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.wu</groupId> <artifactId>springcloud</artifactId> <version>1.0-SNAPSHOT</version> <modules> <module>springcloud-api</module> <module>springcloudproviderdept8001</module> <module>springcloudconsumerdept80</module> </modules> <!--打包方式 pom--> <packaging>pom</packaging> <properties> <projecy.build.sourceEncoding>UTF-8</projecy.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> <!-- 一定要pom+import导入不然子项目会找不到父项目--> <!-- springCloud依赖 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Greenwich.SR1</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,数据源--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.10</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.47</version> </dependency> <!--mybatis启动器--> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <!--单元测试 版本不写死--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> </dependency> <!--lombok--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.20</version> </dependency> <!-- log4j--> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <!--日志相关--> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> <version>1.2.3</version> </dependency> </dependencies> </dependencyManagement> </project>
2.springcloud-api项目，用于存放pojo
2.1 pom--》导入了lombok
2.2 存放了pojo类
@Data @NoArgsConstructor @Accessors(chain=true)//链式写法 dept.setDeptNo(1).setDname("123") //实体类必须实现序列化 public class Dept implements Serializable { private Long deptno; private String dname; //微服务是一个服务对于到一个数据库，同一个信息可能存在不同的数据库 private String db_source;//查看这个数据是存在于哪个数据库的 public Dept(String dname) { this.dname = dname; } }
3.springcloudproviderdept8001服务者项目
3.1项目结构
3.2Dao层以及DeptMapper
@Mapper//是一个mapper @Repository//给spring托管 public interface DeptDao { public boolean addDept(Dept dept); public Dept queryById(Long id); public List<Dept> queryAll(); }
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.wu.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>
3.3Service层
public interface DeptService { public boolean addDept(Dept dept); public Dept queryById(Long id); public List<Dept> queryAll(); }
@Service 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(); } }
3.4 Controller层
//提供restful服务 @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 get(@PathVariable("id") Long id){ return deptService.queryById(id); } @GetMapping("/dept/list") public List<Dept> queryAll(Dept dept){ return deptService.queryAll(); } }
3.5配置文件
mybatis-config
<?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> <!--开启缓存--> <settings> <setting name="cacheEnabled" value="true"/> </settings> </configuration>
application.yml
server: port: 8001 #mybatis的配置 mybatis: type-aliases-package: com.wu.springcloud.pojo mapper-locations: classpath:mybatis/mapper/*.xml config-location: classpath:mybatis/mybatis-config.xml #spring的配置 spring: application: name: springcloud-provider-dept datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: org.gjt.mm.mysql.Driver url: jdbc:mysql://localhost:3306/db01?useSSL=true&useUnicode=true&characterEncoding=utf-8 username: root password: root
3.6主程序入口
@SpringBootApplication public class DeptProvider_8001 { public static void main(String[] args) { SpringApplication.run(DeptProvider_8001.class,args); } }
4.springcloudConsumerdept80消费者项目
4.1项目结构
4.2Controller层
/** * @author wuyimin * @create 2021-06-30-16:51 * @description 在进行此项目请求的时候需要把8001端口先跑起来 */ @RestController public class DeptConsumerController { //消费者不应该有service层 //restTemplate模板有很多可以直接调用的方法，首先需要在配置文件注册到spring中 //（url，实体：map，Class<T>responseType） @Autowired private RestTemplate restTemplate;//提供便捷访问远程http服务的方法，是一个简单的restful服务模板 private static final String REST_URL_PREFIX="http://localhost:8001"; @RequestMapping("/consumer/dept/get/{id}") public Dept get(@PathVariable("id")Long id){ //请求的地址，返回值类型 return restTemplate.getForObject(REST_URL_PREFIX+"/dept/get/"+id,Dept.class); } @RequestMapping("/consumer/dept/add") public boolean add(Dept dept){ //请求的地址,参数,返回值类型 return restTemplate.postForObject(REST_URL_PREFIX+"/dept/add",dept,Boolean.class); } @RequestMapping("/consumer/dept/list") public List<Dept> add(){ //请求的地址,参数,返回值类型 return restTemplate.getForObject(REST_URL_PREFIX+"/dept/list",List.class); } }
4.3配置类
@Configuration//相当于spring中的applicationContext public class ConfigBean { //注册RestTemplate模板 @Bean public RestTemplate getRestTemplate(){ return new RestTemplate(); } }
4.4配置文件以及主程序入口
#80配置之后localhost可以直接访问
server:
port: 80
@SpringBootApplication public class DeptConsumer_80 { public static void main(String[] args) { SpringApplication.run(DeptConsumer_80.class,args); } }
