Retrofit http客户端

来源：互联网发布：app提示网络连接失败编辑：程序博客网时间：2024/05/16 16:19

除了gson转换器，还有其他的支持json的转换器，或者自定义转换器（不一定要转换对象，而是有时需要对http头中的错误码进行处理）

<dependency><groupId>com.squareup.retrofit2</groupId><artifactId>retrofit</artifactId><version>2.3.0</version></dependency><dependency><groupId>com.squareup.retrofit2</groupId><artifactId>converter-gson</artifactId><version>2.3.0</version></dependency>

package gaofeng.http.retrofit;import java.util.List;import retrofit2.Call;import retrofit2.http.GET;import retrofit2.http.Path;public interface GitHubService {@GET("users/{user}/repos")Call<List<Repo>> listRepos(@Path("user") String user);}

package gaofeng.http.retrofit;public class Repo {private int id;private String name;private String full_name;@Overridepublic String toString() {return "Repo [id=" + id + ", name=" + name + ", full_name=" + full_name + "]";}}

package gaofeng.http.retrofit;import java.io.IOException;import java.util.List;import retrofit2.Call;import retrofit2.Callback;import retrofit2.Response;import retrofit2.Retrofit;import retrofit2.converter.gson.GsonConverterFactory;public class Retrofit1 {public static void main(String[] args) throws IOException {Retrofit retrofit = new Retrofit.Builder().baseUrl("https://api.github.com/").addConverterFactory(GsonConverterFactory.create()).build();GitHubService service = retrofit.create(GitHubService.class);Call<List<Repo>> call = service.listRepos("ggaofengg");//同步请求// Response<List<Repo>> re = call.execute();// System.err.println(re.body().get(0));//异步请求call.enqueue(new Callback<List<Repo>>() {public void onResponse(Call<List<Repo>> call, Response<List<Repo>> response) {System.err.println(response.code() +" "+ response.message());System.err.println(response.body().size());System.err.println(response.body().get(0));}public void onFailure(Call<List<Repo>> call, Throwable t) {t.printStackTrace();}});System.err.println("hehe");}}

Retrofit2.1学习：Call接口的使用

http://www.jianshu.com/p/05bbf3aa2269

public class Test {public static void main(String[] args) throws IOException {Retrofit retrofit = new Retrofit.Builder().baseUrl("http://127.0.0.1:5000").build();//不要转换器，用原始ResponseBody，当返回500错误时，也可以通过errorbody获取响应内容RestfulClient s = retrofit.create(RestfulClient.class);Call<ResponseBody> d = s.listRepos("999");Response<ResponseBody> p= d.execute(); System.out.println(p.code()); System.out.println(p.message());//System.out.println(p.errorBody().string());System.out.println(p.body().string());}public static void main2(String[] args) throws IOException {Retrofit retrofit = new Retrofit.Builder().baseUrl("http://127.0.0.1:5000").addConverterFactory(new Factory() {//自定义转换器@Overridepublic Converter<ResponseBody, ?> responseBodyConverter(Type type,        Annotation[] annotations, Retrofit retrofit) {      return new Converter<ResponseBody, String>() {                    public String convert(ResponseBody value) throws IOException {                        return "value.string()";                    }      };    }}).build();RestfulClient2 s = retrofit.create(RestfulClient2.class);Call<String> d = s.listRepos("999");Response<String> p= d.execute(); System.out.println(p.code()); System.out.println(p.message());System.out.println(p.errorBody());//System.out.println(p.body());}}interface RestfulClient {@GET("/app/")Call<ResponseBody> listRepos(@Query("user") String user);}interface RestfulClient2 {@GET("/app/")Call<String> listRepos(@Query("user") String user);}

阅读全文

0 0