Feign 第一个Feign程序一-白红宇

Feign 第一个Feign程序一

阅读量：7027 次

发布时间：2019-06-28

本文共 3331 字，大约阅读时间需要 11 分钟。

Feign 开源地址：

1.编写接口服务

（1）导入jar包


           
      
       org.springframework.boot
            
      
       spring-boot-starter-parent
            
      
       2.0.2.RELEASE
        
       
           
                
       
        org.springframework.boot
                 
       
        spring-boot-starter-web

（2）编写接口

public class Person {    private Integer id;    private String name;    private Integer age;    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public Integer getAge() {        return age;    }    public void setAge(Integer age) {        this.age = age;    }}

　　@RequestMapping(value = "/hello", method = RequestMethod.GET)    public String hello() {        return "hello world";    }    @RequestMapping(value = "/person/{id}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)    public Person person(@PathVariable  Integer id) {        Person person = new Person();        person.setAge(18);        person.setId(id);        person.setName("aa");        return person;    }

2.Feign客户端（此处通过cxf做一个对比）

（1）cxf客户端


             
                  
       
        org.apache.cxf
                   
       
        cxf-core
                   
       
        3.1.10
               
              
                  
       
        org.apache.cxf
                   
       
        cxf-rt-rs-client
                   
       
        3.1.10

public class CxfClient {    public static void main(String[] args) throws Exception{        //创建WebClient        WebClient client = WebClient.create("http://localhost:8080/hello");        //获取响应        Response response = client.get();        //获取响应内容        InputStream inputStream = (InputStream) response.getEntity();        String content =  IOUtils.readStringFromStream(inputStream);        //输出结果        System.out.println("返回结果为：" + content);    }}

（2）feign客户端


         
            
       
        io.github.openfeign
             
       
        feign-core
             
       
        9.5.0
           
          
            
       
        io.github.openfeign
             
       
        feign-gson
             
       
        9.5.0

import com.idelan.cloud.model.Person;import feign.Param;import feign.RequestLine;/** * Created with IDEA * User gyli * date 2018/12/6 */public interface ClientInterface {    @RequestLine("GET /hello")    public String hello();    @RequestLine("GET /person/{id}")    public Person getPerson(@Param("id") Integer id);}

public static void main(String[] args) {        ClientInterface helloClient = Feign.builder().target(ClientInterface.class, "http://localhost:8080");        String hello = helloClient.hello();        System.out.println(hello);        ClientInterface clientInterface = Feign.builder()                .decoder(new GsonDecoder())                .target(ClientInterface.class, "http://localhost:8080");        Person person = clientInterface.getPerson(2);        System.out.println(person.getId());        System.out.println(person.getName());        System.out.println(person.getAge());    }

转载于:https://www.cnblogs.com/gyli20170901/p/10077414.html

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