创建父Maven工程
首先我们创建一个Maven项目了解springcloud架构可以加求求:三五三六二四七二五九
我们把此项目当做我们项目的父项目,以后我们所有的子项目都应该继承这个项目,来看一下此项目的pom.xml文件都是依赖了什么
<?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>cn.org.zhixiang</groupId>
<artifactId>spring-cloud-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
</parent>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Finchley.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
创建服务提供者
右键项目名称:spring-cloud-demo,选择New–>Module,选择Maven,然后点击next,然后呢artifactId给项目取名为cloud-demo-provider,现在服务提供者项目就创建好了。因为接下来我们测试需要访问程序,所以接着我们引入所需的web依赖。
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
2.在resources文件夹下新建application.properties或者application.yml(二者任选其一),添加如下配置:
properties文件这样写
spring.application.name=provider-demo
server.port=8078
yml这样写
spring:
application:
name: provider-demo
server:
port: 8078
spring.application.name呢,意思是给给项目起个名字叫做provider-demo
server.port呢,指定项目启动时的端口为8078
3 .在Java文件夹下创建包cn.org.zhixiang(这个包名是我的网站域名的反转,大家可以自行定义),在此包下新建CloudDemoProviderApplication类
package cn.org.zhixiang;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class CloudDemoProviderApplication {
public static void main(String[] args) {
SpringApplication.run(CloudDemoProviderApplication.class, args);
}
}
@SpringBootApplication注解呢是SpringBoot的一个组合注解,主要注解为@Configuration、@EnableAutoConfiguration、@ComponentScan
我们使用SpringBoot启动项目时一般都会使用此注解,一会启动项目的时候我们在这个类中右键选择run CloudDemoProviderApplication 就可以启动了
4.在cn.org.zhxiang包下新建包domain,在domain包中创建一个User实体类
public class User{
private long id;
private String name;
private int age;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
5.在cn.org.zhxiang包下新建包controller,在controller包中创建一个类UserController
@RestController
@RequestMapping("/user")
public class UserController {
@GetMapping(value = "/getUser/{id}")
public User getUser(@PathVariable Long id){
User user=new User();
user.setId(id);
user.setName("张三");
user.setAge(18);
return user;
}
@GetMapping(value = "/getName")
public String getName(){
return "张三";
}
}
@RestController注解呢,其实就是@ResponseBody + @Controller的组合注解,@GetMapping呢,相当于@RequestMapping(value="", method = RequestMethod.GET)