Spring Boot + Spring Cloud + Mybatis 互相调用的一个小例子

Spring Boot + Spring Cloud + Mybatis 互相调用的一个小例子

不说话直接上代码：

目录

注册中的代码：
启动类：

package com.example.springcloudservice;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@EnableEurekaServer
@SpringBootApplication
public class SpringcloudServiceApplication {

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

application.properties文件：

server.port=8888
eureka.instance.hostname=localhost
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.client.service-url.defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

pom文件：
"1.0" encoding="UTF-8"?>
"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">
    4.0.0

    com.example
    springcloud-service
    0.0.1-SNAPSHOT
    jar

    springcloud-service
    Demo project for Spring Boot

    
        org.springframework.boot
        spring-boot-starter-parent
        1.5.7.RELEASE
         
    

    
        UTF-8
        UTF-8
        1.8
        Dalston.SR3
    

    
        
            org.springframework.cloud
            spring-cloud-starter-eureka-server
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        
    

    
        
            
                org.springframework.cloud
                spring-cloud-dependencies
                ${spring-cloud.version}
                pom
                import
            
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    

启动后访问 localhost:8888 出现如下图 ，这时你的 注册中心已经好了

服务提供代码：
目录：

@RestController
public class DemoController {

    @Autowired
    private HelloService helloService;
    @Autowired
    private HelloServiceApi serviceApi;

    @RequestMapping("/getUser")
    public String index(){
        List<User> user=helloService.getUser(1);
        return "Hello Spring Boot"+user.size();
    }

    @RequestMapping("/getStringApi")
    public String getString(){
        return serviceApi.getStringApi();
    }
}

**自己的接口实现：**
package com.example.service;
import com.example.model.User;
import java.util.List;
public interface  HelloService {
    List<User> getUser(int id);
}
----------------------------------
package com.example.service;
import com.example.mapper.UserMapper;
import com.example.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;

@Service
@Transactional
public class HelloServiceImpl implements HelloService{
    @Autowired
    private UserMapper userMapper;
    public List<User> getUser(int id){
        return userMapper.selectAll();
    }
}

**调用外部服务接口：**
package com.example.service;
import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;

@FeignClient(name = "client")
public interface HelloServiceApi {

    @RequestMapping("/test")
    String getStringApi();
}

**application.yml文件：**

server:
  port: 8889
#  context-path: /helloboot
  tomcat:
          max-threads: 800
          uri-encoding: UTF-8
logging:
    classpath: logback.xml

book:
  author: ruxiang
  name: spring boot

hello:
   msg: ruxiang

# 项目配置
spring:
   application:
              name: demo
   http:
        encoding: UTF-8
   datasource:
        name: ikcrm
        url: jdbc:mysql://自己的数据库地址:3306/数据库名称?characterEncoding=utf8&autoReconnect=true
        username: ******
        password: ******
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.jdbc.Driver
        filters: stat
        maxActive: 100
        initialSize: 2
        maxWait: 60000
        minIdle: 8
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 120000
        validationQuery: select 'x'
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        poolPreparedStatements: true
        maxOpenPreparedStatements: 100

mybatis:
    type-aliases-package: com.example.model
    mapper-locations: classpath:mapper/*.xml

mapper:
    mappers:
        - com.example.model.MyMapper
    not-empty: false
    identity: MYSQL

pagehelper:
    helperDialect: mysql
    reasonable: true
    supportMethodsArguments: true
    params: count=countSql

# eureka地址
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8888/eureka/


**pom 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>4.0.0modelVersion>

    <groupId>com.examplegroupId>
    <artifactId>demoartifactId>
    <version>0.0.1-SNAPSHOTversion>
    <packaging>jarpackaging>

    <name>demoname>
    <description>Demo project for Spring Bootdescription>


    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>1.5.7.RELEASEversion>
        <relativePath/> 
    parent>
    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
        <java.version>1.8java.version>
        <mybatis.spring.version>1.2.4mybatis.spring.version>
        <spring-cloud.version>Dalston.SR3spring-cloud.version>

    properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>


        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-devtoolsartifactId>
            <optional>trueoptional>
        dependency>

        
        <dependency>
            <groupId>org.mybatis.spring.bootgroupId>
            <artifactId>mybatis-spring-boot-starterartifactId>
            <version>1.3.1version>
        dependency>
        
        <dependency>
            <groupId>tk.mybatisgroupId>
            <artifactId>mapper-spring-boot-starterartifactId>
            <version>1.1.4version>
        dependency>
        
        <dependency>
            <groupId>com.github.pagehelpergroupId>
            <artifactId>pagehelper-spring-boot-starterartifactId>
            <version>1.2.2version>
        dependency>
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>druidartifactId>
            <version>1.0.16version>
        dependency>
        <dependency>
            <groupId>org.mybatis.extendgroupId>
            <artifactId>mybatis-genericartifactId>
            <version>1.0.0-SNAPSHOTversion>
        dependency>


        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-actuatorartifactId>
        dependency>
    
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-eurekaartifactId>
            
        dependency>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-eureka-serverartifactId>
            
        dependency>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-feignartifactId>
        dependency>


    dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-dependenciesartifactId>
                <version>${spring-cloud.version}version>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            plugin>
        plugins>
    build>

project>


**启动类：**
@EnableEurekaClient    //发现服务注解
@EnableFeignClients    //声明
@EnableEurekaServer
@SpringBootApplication
@ComponentScan(basePackages = {"com.example.service" ,"com.example.controller"})
@MapperScan(basePackages = "com.example.mapper")
public class Application extends WebMvcConfigurerAdapter implements CommandLineRunner {
    private Logger logger = LoggerFactory.getLogger(Application.class);

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
    @Override
    public void run(String... args) throws Exception {
        logger.info("服务启动完成!");
    }

}

服务消费代码：
目录：

package com.client.controller;

import com.client.service.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {

    @Autowired
    private TestService testService;

    @RequestMapping(value = "/test",method = RequestMethod.GET)
    public String test(){
        System.out.println("ccccccccccccccccc");
        return testService.testss();
    }
}

package com.client.service;

import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;

@FeignClient(name = "demo")
public interface TestService {

    @RequestMapping("/getUser")
    String testss();
}

**application.properties文件：**
server.port=8890
eureka.client.service-url.defaultZone: http://localhost:8888/eureka/
spring.application.name=client

**pom文件：**
"1.0" encoding="UTF-8"?>
"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">
    4.0.0

    com.client
    client
    0.0.1-SNAPSHOT
    jar

    client
    Demo project for Spring Boot

    
        org.springframework.boot
        spring-boot-starter-parent
        1.5.7.RELEASE
         
    

    
        .build.sourceEncoding>UTF-8.build.sourceEncoding>
        .reporting.outputEncoding>UTF-8.reporting.outputEncoding>
        .version>1.8.version>
        .version>Dalston.SR3.version>
    

    

        
            org.springframework.cloud
            spring-cloud-starter-eureka
        
        
            org.springframework.cloud
            spring-cloud-starter-feign
        

        
            org.springframework.boot
            spring-boot-starter-web
        

        
            org.springframework.cloud
            spring-cloud-starter-eureka-server
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        
    

    
        
            
                org.springframework.cloud
                spring-cloud-dependencies
                ${spring-cloud.version}
                pom
                import
            
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    


**启动类：**
package com.client;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
import org.springframework.cloud.netflix.feign.EnableFeignClients;

@EnableEurekaClient    //发现服务注解
//@EnableDiscoveryClient
@EnableFeignClients    //声明
@EnableEurekaServer
@SpringBootApplication
//@ComponentScan(basePackages = {"com.client.service" ,"com.client.controller"})
public class ClientApplication {

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

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