SpringCloud——服务接口(api)

痛定思痛。 2022-05-10 01:46 157阅读 0赞

SpringCloud的服务接口基本等同于SpringBoot开发的api接口，只不过在springCloud需要将自己的服务注册到**注册中心**，通过**网关**统一访问路径

一个简单的api接口

pom.xml

<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.springcloud.demo</groupId>
      <artifactId>eureka-user</artifactId>
      <version>dev</version>
    	<packaging>jar</packaging>
    
    	<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>1.5.7.RELEASE</version>
    		<relativePath/> 
    	</parent>
    
    	<properties>
    	    
    		<start-class>com.cc.yonyou.rndealer.BootMain</start-class>
    		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    		<java.version>1.8</java.version>
    		<spring-cloud.version>Dalston.SR4</spring-cloud.version>
    		
    		<swagger.version>2.5.0</swagger.version>
    	</properties>
    
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-eureka</artifactId>
    		</dependency>
    		
    		<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-feign</artifactId>
            </dependency>
             <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
            </dependency>
    	
    		
    		<dependency>
                <groupId>commons-codec</groupId>
                <artifactId>commons-codec</artifactId>
                <version>1.10</version>
            </dependency>
           
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-eureka</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>1.1.1</version>
    		</dependency>
    		<dependency>
    			<groupId>org.mybatis.generator</groupId>
    			<artifactId>mybatis-generator-core</artifactId>
    			<version>1.3.2</version>
    			<scope>compile</scope>
    			<optional>true</optional>
    		</dependency>
    		
    		<dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger-ui</artifactId>
                <version>2.2.2</version>
            </dependency>
    		<dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.25</version>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger2</artifactId>
                <version>2.2.2</version>
            </dependency>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    		</dependency>
    		<dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.25</version>
            </dependency>
    		
    		<dependency>
    			<groupId>com.alibaba</groupId>
    			<artifactId>druid</artifactId>
    			<version>1.0.20</version>
    		</dependency>
    		<dependency>
    			<groupId>com.alibaba</groupId>
    			<artifactId>fastjson</artifactId>
    			<version>1.2.12</version>
    		</dependency>
    		<dependency>
    			<groupId>com.github.pagehelper</groupId>
    			<artifactId>pagehelper</artifactId>
    			<version>4.1.6</version>
    		</dependency>
    		
    		
    		<dependency>
    			<groupId>io.springfox</groupId>
    			<artifactId>springfox-swagger2</artifactId>
    			<version>${swagger.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>io.springfox</groupId>
    			<artifactId>springfox-swagger-ui</artifactId>
    			<version>${swagger.version}</version>
    		</dependency>
    		
    		<dependency>  
        		<groupId>org.springframework.boot</groupId>  
       		 	<artifactId>spring-boot-starter-redis</artifactId> 
       		 	<version>1.3.8.RELEASE</version> 
    		</dependency>
    		
    		<dependency>
    			<groupId>com.alibaba</groupId>
    			<artifactId>druid</artifactId>
    			<version>1.0.20</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>
    		</dependencies>
    	</dependencyManagement>
    
    	<build>
    		<plugins>
    			<plugin>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-maven-plugin</artifactId>
    			</plugin>
    			
                <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                	<artifactId>maven-surefire-plugin</artifactId>
                	<configuration>
                		<skip>true</skip>
                	</configuration>
                </plugin>
    		</plugins>
    	</build>
    
    
    </project>

application.properties

#eureka
    spring.application.name = user
    server.port=12003
    eureka.client.serviceUrl.defaultZone=http://localhost:12000/eureka/
    feign.hystrix.enabled=true
    
    #mybatis
    mybatis.type-aliases-package=com.springcloud.demo.domain
    mybatis.mapper-locations=classpath*:/mapper/*Mapper.xml
    mybatis.configuration.map-underscore-to-camel-case=true
    mybatis.configuration.use-generated-keys=true
    mybatis.configuration.default-fetch-size=100
    mybatis.configuration.default-statement-timeout=30
    
    #datasource
    spring.datasource.username=root
    spring.datasource.password=mysql
    spring.datasource.driver-class-name=com.mysql.jdbc.Driver
    spring.datasource.url=jdbc:mysql://localhost:3306/test
    
    spring.datasource.initialSize=5
    spring.datasource.minIdle=5
    spring.datasource.maxActive=20
    spring.datasource.maxWait=60000
    spring.datasource.timeBetweenEvictionRunsMillis=60000
    spring.datasource.validationQuery=SELECT 1
    spring.datasource.testWhileIdle=true
    spring.datasource.testOnBorrow=false
    spring.datasource.testOnReturn=false
    spring.datasource.poolPreparedStatements=true 
    spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
    spring.datasource.filters=stat
    spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000

BootMain.java

package com.springcloud.demo;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.cloud.netflix.feign.EnableFeignClients;
    import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;
    import org.springframework.scheduling.annotation.EnableScheduling;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    import springfox.documentation.annotations.ApiIgnore;
    import springfox.documentation.swagger2.annotations.EnableSwagger2;
    
    @Controller
    @SpringBootApplication
    @ApiIgnore
    @EnableScheduling 
    @EnableDiscoveryClient
    @EnableFeignClients
    @EnableSwagger2
    @EnableHystrixDashboard
    public class BootMain {
    	public static void main(String[] args) {
    		SpringApplication.run(BootMain.class, args);
    	}
    	
    	@RequestMapping("/help")
    	public String help() {
    		return "redirect:swagger-ui.html";
    	}
    
    }

api接口uers.java

package com.springcloud.demo.api;
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class UserApi {
    	@RequestMapping(value="/test",method=RequestMethod.GET)
    	public String test() {
    		return "Hello World";
    	}
    }

基本代码与我们常写得api接口无异，只是在application.properties文件中添加了注册中心的路径