一、项目思路
- 使用idea工具创建一个maven空项目,删除不需要的src目录等东西,用来做父项目,只剩下pom.xml文件
- 在父项目中依次创建三个模块module,分别为eruekaservice、provide、consumer三个子项目(springboot项目)。
- 在erueka中添加配置信息、在启动类上添加@EnableEurekaServer注解。
- 在provide中添加配置信息、在启动类上添加@EnableEurekaClient注解(consumer的步骤相同)。
- 在provide子项目中创建entity实体类、DAO层、service层、controller层,此处使用mybatis连接数据库、Druid连接池来连接MySQL(DataSource配置略)。
- 在consumer子项目中创建controller层,使用restTemplate来访问provide中的api(消费者controller的接口)。
- 项目运行顺序,erueka>provide>comsumer。
二、实现步骤
1、创建maven空项目
删除不需要的目录和文件
2、创建erueka-service
选择需要导入的模块(依赖)
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.yiblue</groupId> <artifactId>eureka-server</artifactId> <version>0.0.1-SNAPSHOT</version> <name>eureka-server</name> <description>eureka-server</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <spring-boot.version>2.3.7.RELEASE</spring-boot.version> <spring-cloud.version>Hoxton.SR9</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins>
//编译插件 <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.1</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin>
//maven插件 <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.3.7.RELEASE</version> <configuration> <mainClass>com.yiblue.eurekaserver.EurekaServerApplication</mainClass> </configuration> <executions> <execution> <id>repackage</id> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </project>
修改配置文件application.yml
server: port: 8080 spring: application: name: eureka-server eureka: instance: hostname: localhost client: register-with-eureka: false fetch-registry: false service-url: defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
在启动类EurekaServerApplication 上添加注解:@EnableEurekaServer
@SpringBootApplication @EnableEurekaServer public class EurekaServerApplication { public static void main(String[] args) { SpringApplication.run(EurekaServerApplication.class, args); } }
3、创建provider项目(与erueka一样,这省略)
pom.xml依赖导入
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.yiblue</groupId> <artifactId>provider-8001</artifactId> <version>0.0.1-SNAPSHOT</version> <name>provider-8001</name> <description>provider-8001</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <spring-boot.version>2.3.7.RELEASE</spring-boot.version> <spring-cloud.version>Hoxton.SR9</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</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> <version>2.1.4</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.17</version> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.1</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.3.7.RELEASE</version> <configuration> <mainClass>com.yiblue.provider8001.Provider8001Application</mainClass> </configuration> <executions> <execution> <id>repackage</id> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </project>
application.yml修改配置(provider),配置mybatis连接MySQL信息
spring:
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/shiro?serverTimezone=UTC&useUnicode=true&characterEncoding=utf8
username: caidongji
password: abc123
application:
name: provider-8001
eureka:
client:
service-url:
defaultZone: http://localhost:8080/eureka/
server:
port: 8001
mybatis:
type-aliases-package: com.yiblue.provider8001.entity
mapper-locations: classpath:mappers/*xml
在启动类Provider8001Application上添加注解@EnableEurekaClient
@SpringBootApplication @EnableEurekaClient public class Provider8001Application { public static void main(String[] args) { SpringApplication.run(Provider8001Application.class, args); } }
编写实体类
@Data @AllArgsConstructor @NoArgsConstructor public class ShiroUser { private Integer uid; private String uname; private String password; private String datasource; }
编写接口(这里省略dao,合并到service中了)
@Mapper @Repository public interface ShiroUserService { @Select("select * from usershiro") public List<ShiroUser> selectAll(); @Select("select * from usershiro where uname=#{uname}") public ShiroUser selectOne(String uname); @Select("insert into usershiro (uname,password,datasource) values (#{uname},#{password},#{datasource})") void insertOne(ShiroUser shiroUser); @Select("delete from usershiro where uname=#{uname}") void deleteOne(String uname); }
编写controller
@RestController public class ShiroUserController { @Autowired ShiroUserService shiroUserService; @GetMapping("/getAll") public List<ShiroUser> getAll(){ return shiroUserService.selectAll(); }
@GetMapping("/getOne") public ShiroUser getOne(String uname){ return shiroUserService.selectOne(uname);} }
4、创建comsumer项目(与erueka一样,这省略)
配置依赖,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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.yiblue</groupId> <artifactId>eureka-server</artifactId> <version>0.0.1-SNAPSHOT</version> <name>eureka-server</name> <description>eureka-server</description> <properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <spring-boot.version>2.3.7.RELEASE</spring-boot.version> <spring-cloud.version>Hoxton.SR9</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.1</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.3.7.RELEASE</version> <configuration> <mainClass>com.yiblue.eurekaserver.EurekaServerApplication</mainClass> </configuration> <executions> <execution> <id>repackage</id> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> </plugins> </build> </project>
修改application.yml文件
server: port: 8080 spring: application: name: eureka-server eureka: instance: hostname: localhost client: register-with-eureka: false fetch-registry: false service-url: defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
在启动类Consumer8002Application上添加注解
@SpringBootApplication @EnableEurekaClient public class Consumer8002Application { public static void main(String[] args) { SpringApplication.run(Consumer8002Application.class, args); } }
spring不会自动装配restTemplate,需要配置类注入容器中
@Configuration public class restTemplateconfig { @Bean // @LoadBalanced RestTemplate restTemplate(){ return new RestTemplate();} }
创建controller类,调用提供者的api
@RestController public class ShiroUserController { @Resource RestTemplate restTemplate; @GetMapping("/findAll") public List<ShiroUser> findAll(){ return restTemplate.getForObject("http://localhost:8001/getAll", List.class); } }
5、项目运行顺序:erueka>provider>consumer
在浏览器中访问:localhost:8002/findAll
6、end