入门搭建一个简单的springcloud
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搭建父工程
创建新的项目，这里我习惯先创建一个空的项目
命名这个项目和工程存放的路径
然后点ok会弹出这个窗口， 然后点击new Module
选择maven，然后不用勾选任何东西，直接next
填写完毕后直接next
然后点击finish
点击ok即可
这样父工程就被我们创建出来了，然后我们删除一些不用的文件夹。
然后我们导入父工程的相关依赖
1 <packaging>pom</packaging> 2 3 <parent> 4 <groupId>org.springframework.boot</groupId> 5 <artifactId>spring-boot-starter-parent</artifactId> 6 <version>2.1.3.RELEASE</version> 7 <relativePath/> 8 </parent> 9 10 <properties> 11 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 12 <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> 13 <java.version>1.8</java.version> 14 <spring-cloud.version>Greenwich.RELEASE</spring-cloud.version> 15 <mapper.starter.version>2.1.5</mapper.starter.version> 16 <mysql.version>5.1.47</mysql.version> 17 <pageHelper.starter.version>1.2.10</pageHelper.starter.version> 18 <mapper.version>1.1.5</mapper.version> 19 </properties> 20 21 <dependencyManagement> 22 <dependencies> 23 <!-- springCloud --> 24 <dependency> 25 <groupId>org.springframework.cloud</groupId> 26 <artifactId>spring-cloud-dependencies</artifactId> 27 <version>${spring-cloud.version}</version> 28 <type>pom</type> 29 <scope>import</scope> 30 </dependency> 31 <!-- 通用Mapper启动器 --> 32 <dependency> 33 <groupId>tk.mybatis</groupId> 34 <artifactId>mapper-spring-boot-starter</artifactId> 35 <version>${mapper.starter.version}</version> 36 </dependency> 37 <!-- 分页助手启动器 --> 38 <dependency> 39 <groupId>com.github.pagehelper</groupId> 40 <artifactId>pagehelper-spring-boot-starter</artifactId> 41 <version>${pageHelper.starter.version}</version> 42 </dependency> 43 <!-- mysql驱动 --> 44 <dependency> 45 <groupId>mysql</groupId> 46 <artifactId>mysql-connector-java</artifactId> 47 <version>${mysql.version}</version> 48 </dependency> 49 </dependencies> 50 </dependencyManagement> 51 52 <dependencies> 53 <dependency> 54 <groupId>org.apache.commons</groupId> 55 <artifactId>commons-lang3</artifactId> 56 <version>3.4</version> 57 </dependency> 58 <dependency> 59 <groupId>org.projectlombok</groupId> 60 <artifactId>lombok</artifactId> 61 </dependency> 62 </dependencies>
搭建eureka在父工程下新建一个模块
选择maven直接next
填写完后next
注意：改路径
如下：然后点击finish
然后引入eureka的依赖
1 <!--引入eureka组件依赖-->
2 <dependencies>
3 <dependency>
4 <groupId>org.springframework.cloud</groupId>
5 <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
6 </dependency>
7 </dependencies>
8
9 <build>
10 <plugins>
11 <plugin>
12 <groupId>org.springframework.boot</groupId>
13 <artifactId>spring-boot-maven-plugin</artifactId>
14 </plugin>
15 </plugins>
16 </build>
创建eureka启动类
在resource目录下创建application.yml配置文件，这里我们配置的是单实例的eureka
#springcloud中Eureka注册中心的端口号 server: port: 10086 #服务的名称 spring: application: name: eureka eureka: client: fetch-registry: false #true的时候Eureka client在启动时会从Eureka server获取注册信息并缓存到本地，之后只会增量获取信息 false则是每次全量获取 register-with-eureka: false #是否开启相互注册 service-url: defaultZone: http://127.0.0.1:10086/eureka/ #eureka的url instance: prefer-ip-address: true
启动测试
搭建网关zuul在父工程下新建模块
和新建eureka步骤一样
引入网关相关依赖
1 <dependencies> 2 <dependency> 3 <groupId>org.springframework.cloud</groupId> 4 <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> 5 </dependency> 6 <dependency> 7 <groupId>org.springframework.cloud</groupId> 8 <artifactId>spring-cloud-starter-netflix-zuul</artifactId> 9 </dependency> 10 <dependency> 11 <groupId>org.springframework.boot</groupId> 12 <artifactId>spring-boot-configuration-processor</artifactId> 13 </dependency> 14 </dependencies> 15 <build> 16 <plugins> 17 <plugin> 18 <groupId>org.springframework.boot</groupId> 19 <artifactId>spring-boot-maven-plugin</artifactId> 20 </plugin> 21 </plugins> 22 </build>
创建网关的启动类
创建网关的配置文件
1 server: 2 port: 10010 #开启的端口 3 spring: 4 application: 5 name: gateway #服务的名称 6 eureka: 7 client: 8 service-url: 9 defaultZone: http://127.0.0.1:10086/eureka/ #注册到eureka的地址 10 registry-fetch-interval-seconds: 5 #eureka client间隔5s去拉取服务注册信息 11 zuul: 12 prefix: /api # 添加路由前缀 13 14 sensitive-headers: #忽略请求头设置为null 15 host: 16 connect-timeout-millis: 15000 17 socket-timeout-millis: 60000
启动测试
创建通用类在父工程下新建module
引入依赖
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.8</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-base</artifactId>
<version>${mapper.version}</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-core</artifactId>
<version>${mapper.version}</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-extra</artifactId>
<version>${mapper.version}</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-api</artifactId>
<version>0.10.5</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-impl</artifactId>
<version>0.10.5</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-jackson</artifactId>
<version>0.10.5</version>
<scope>runtime</scope>
</dependency>
</dependencies>
通用mapper
1 @tk.mybatis.mapper.annotation.RegisterMapper 2 public interface CommonMapper<T,Number> extends Mapper<T>,IdListMapper<T,Number>,InsertListMapper<T> { 3 }
通用返回
1 public class RestfulResult { 2 3 private String result = "Success"; 4 private String message; 5 private Object data; // 返回数据 6 private int cntPage; // page数 7 private long cntData; // 返回数据总数 8 9 public String getResult() { 10 return result; 11 } 12 public void setResult(String result) { 13 this.result = result; 14 } 15 public String getMessage() { 16 return message; 17 } 18 public void setMessage(String message) { 19 this.message = message; 20 } 21 public Object getData() { 22 return data; 23 } 24 public void setData(Object data) { 25 this.data = data; 26 } 27 public int getCntPage() { 28 return cntPage; 29 } 30 public void setCntPage(int cntPage) { 31 this.cntPage = cntPage; 32 } 33 public long getCntData() { 34 return cntData; 35 } 36 public void setCntData(long cntData) { 37 this.cntData = cntData; 38 } 39 }
创建用户微服务在父工程下新建module
引入依赖
1 <dependencies> 2 <!--web启动器--> 3 <dependency> 4 <groupId>org.springframework.boot</groupId> 5 <artifactId>spring-boot-starter-web</artifactId> 6 </dependency> 7 <!--eureka客户端--> 8 <dependency> 9 <groupId>org.springframework.cloud</groupId> 10 <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> 11 </dependency> 12 <!--通用mapper--> 13 <dependency> 14 <groupId>tk.mybatis</groupId> 15 <artifactId>mapper-spring-boot-starter</artifactId> 16 </dependency> 17 <!--数据库驱动--> 18 <dependency> 19 <groupId>mysql</groupId> 20 <artifactId>mysql-connector-java</artifactId> 21 </dependency> 22 <!--实体类--> 23 <!--单元测试--> 24 <dependency> 25 <groupId>org.springframework.boot</groupId> 26 <artifactId>spring-boot-starter-test</artifactId> 27 </dependency> 28 <!--分页助手--> 29 <dependency> 30 <groupId>com.github.pagehelper</groupId> 31 <artifactId>pagehelper-spring-boot-starter</artifactId> 32 </dependency> 33 34 <dependency> 35 <groupId>com.jia</groupId> 36 <artifactId>common</artifactId> 37 <version>1.0-SNAPSHOT</version> 38 </dependency> 39 40 </dependencies> 41 <build> 42 <plugins> 43 <plugin> 44 <groupId>org.springframework.boot</groupId> 45 <artifactId>spring-boot-maven-plugin</artifactId> 46 </plugin> 47 </plugins> 48 </build>
创建用户微服务启动类
新建实体对象
1 @Data 2 @NoArgsConstructor 3 @Table(name = "student") 4 public class Student { 5 @NonNull 6 private String id; 7 private String name; 8 private String age; 9 }
新建mapper（存放自定义mapper）
1 public interface StudentMapper<T> extends Mapper<Student>{ 2 }
新建service
1 @Service 2 public class StudentService { 3 4 @Autowired 5 private StudentMapper studentMapper; 6 7 public List<Student> queryStudent(Student student){ 8 List list = studentMapper.select(student); 9 return list; 10 } 11 12 }
新建controller
1 @RestController 2 @RequestMapping("/hello") 3 public class StudentController { 4 5 @Autowired 6 private StudentService studentService; 7 8 @RequestMapping("/student") 9 public RestfulResult queryStudent(@RequestBody Student student){ 10 RestfulResult result = new RestfulResult(); 11 result.setMessage("1"); 12 result.setData(studentService.queryStudent(student)); 13 return result; 14 } 15 }
配置yml文件
1 server: 2 port: 8086 3 spring: 4 application: 5 name: student-service 6 datasource: 7 driver-class-name: com.mysql.jdbc.Driver 8 url: jdbc:mysql://localhost:3306/test?characterEncoding=utf-8&useSSL=false 9 username: root 10 password: 12345678 11 mybatis: 12 mapper-locations: mappers/*.xml 13 configuration: 14 map-underscore-to-camel-case: true #驼峰命名映射 15 type-aliases-package: com.jia.pojo 16 mapper: 17 wrap-keyword: "`{0}`" #通用mapper关键字处理 18 eureka: 19 client: 20 service-url: 21 defaultZone: http://localhost:10086/eureka 22 registry-fetch-interval-seconds: 5 23 instance: 24 prefer-ip-address: true 25 ip-address: 127.0.0.1
resource下新建mapper.xml用来存放自定义的mapperxml
启动测试
新建Feign微服务在父工程下新建module
引入依赖
1 <dependencies> 2 <!--web启动器--> 3 <dependency> 4 <groupId>org.springframework.boot</groupId> 5 <artifactId>spring-boot-starter-web</artifactId> 6 </dependency> 7 <!--eureka客户端--> 8 <dependency> 9 <groupId>org.springframework.cloud</groupId> 10 <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> 11 </dependency> 12 <!--通用mapper--> 13 <dependency> 14 <groupId>tk.mybatis</groupId> 15 <artifactId>mapper-spring-boot-starter</artifactId> 16 </dependency> 17 <!--数据库驱动--> 18 <dependency> 19 <groupId>mysql</groupId> 20 <artifactId>mysql-connector-java</artifactId> 21 </dependency> 22 <!--实体类--> 23 <!--单元测试--> 24 <dependency> 25 <groupId>org.springframework.boot</groupId> 26 <artifactId>spring-boot-starter-test</artifactId> 27 </dependency> 28 <!--分页助手--> 29 <dependency> 30 <groupId>com.github.pagehelper</groupId> 31 <artifactId>pagehelper-spring-boot-starter</artifactId> 32 </dependency> 33 34 <dependency> 35 <groupId>com.jia</groupId> 36 <artifactId>common</artifactId> 37 <version>1.0-SNAPSHOT</version> 38 </dependency> 39 40 <!--添加feign--> 41 <dependency> 42 <groupId>org.springframework.cloud</groupId> 43 <artifactId>spring-cloud-starter-openfeign</artifactId> 44 </dependency> 45 46 <!--<dependency> 47 <groupId>org.springframework.cloud</groupId> 48 <artifactId>spring-cloud-openfeign-core</artifactId> 49 </dependency>--> 50 51 <dependency> 52 <groupId>org.springframework.cloud</groupId> 53 <artifactId>spring-cloud-starter-hystrix</artifactId> 54 <version>1.4.7.RELEASE</version> 55 </dependency> 56 57 <dependency> 58 <groupId>org.springframework.boot</groupId> 59 <artifactId>spring-boot-starter-actuator</artifactId> 60 </dependency> 61 62 <dependency> 63 <groupId>com.netflix.hystrix</groupId> 64 <artifactId>hystrix-javanica</artifactId> 65 <version>RELEASE</version> 66 </dependency> 67 68 </dependencies> 69 <build> 70 <plugins> 71 <plugin> 72 <groupId>org.springframework.boot</groupId> 73 <artifactId>spring-boot-maven-plugin</artifactId> 74 </plugin> 75 </plugins> 76 </build>
新建feign启动类
新建pojo
新建client
serviceFeignClient
1 @Component 2 @FeignClient(name= "student-service",fallback = ServiceFallback.class) 3 public interface ServiceFeignClient { 4 @RequestMapping(value = "/hello/student",method = RequestMethod.POST) 5 RestfulResult queryStudent(@RequestBody Student student); 6 }
serviceFallback
1 @Component 2 public class ServiceFallback implements ServiceFeignClient { 3 @Override 4 public RestfulResult queryStudent(Student student) { 5 RestfulResult result = new RestfulResult(); 6 result.setData("服务调用失败"); 7 return result; 8 } 9 }
新建controller，注入feignServiceClient
1 @RestController 2 @RequestMapping("/hi") 3 public class StudentController { 4 5 @Autowired 6 private ServiceFeignClient serviceFeignClient; 7 8 @RequestMapping("/student") 9 public RestfulResult queryStudent(@RequestBody Student student){ 10 return serviceFeignClient.queryStudent(student); 11 } 12 13 }
yml配置文件
1 server: 2 port: 8087 3 spring: 4 application: 5 name: feign-service 6 datasource: 7 driver-class-name: com.mysql.jdbc.Driver 8 url: jdbc:mysql://localhost:3306/test?characterEncoding=utf-8&useSSL=false 9 username: root 10 password: 12345678 11 mybatis: 12 mapper-locations: mappers/*.xml 13 configuration: 14 map-underscore-to-camel-case: true #驼峰命名映射 15 type-aliases-package: com.jia.pojo 16 mapper: 17 wrap-keyword: "`{0}`" #通用mapper关键字处理 18 eureka: 19 client: 20 service-url: 21 defaultZone: http://localhost:10086/eureka 22 registry-fetch-interval-seconds: 5 23 instance: 24 prefer-ip-address: true 25 ip-address: 127.0.0.1 26 feign: 27 hystrix: 28 enabled: true
pojo
@Data
@NoArgsConstructor
@Table(name = "student")
public class Student {
@NonNull
private String id;
private String name;
private String age;
}
复制一份用户微服务，修改下配置端口，启动
启动feign测试
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