参考图谱

【20180928】SpringBoot retrofit - 图1

注意事项

  • 按照官方教程处理，可能会碰到GsonConverterFactory.create()无法在IDEA中识别的问题，解决方案为pom引入依赖。注意两个版本号应该一致。
  1.          <dependency>
  2.             <groupId>com.squareup.retrofit2</groupId>
  3.             <artifactId>retrofit</artifactId>
  4.             <version>2.0.0-beta3</version>
  5.         </dependency>
  6.         <dependency>
  7.             <groupId>com.squareup.retrofit2</groupId>
  8.             <artifactId>converter-gson</artifactId>
  9.             <version>2.0.0-beta3</version>
  10.         </dependency>
  11.         <dependency>
  12.             <groupId>com.google.code.gson</groupId>
  13.             <artifactId>gson</artifactId>
  14.             <version>2.3</version>
  15.         </dependency>

调试代码

  • 注意GsonConverterFactory.create()很可能报错（找不到类），如果报错了，检查自己的pom.xml引入是否正常。
  1. import retrofit2.Call;
  2. import retrofit2.GsonConverterFactory;
  3. import retrofit2.Retrofit;
  4. import retrofit2.http.GET;
  5. import retrofit2.http.Path;
  8. import java.io.IOException;
  9. import java.util.List;
  11. public class TestRetrofit {
  12.     public static final String API_URL = "https://api.github.com";
  14.     public static class Contributor {
  15.         public final String login;
  16.         public final int contributions;
  18.         public Contributor(String login, int contributions) {
  19.             this.login = login;
  20.             this.contributions = contributions;
  21.         }
  22.     }
  24.     public interface GitHub {
  25.         @GET("/repos/{owner}/{repo}/contributors")
  26.         Call<List<Contributor>> contributors(
  27.                 @Path("owner") String owner,
  28.                 @Path("repo") String repo);
  29.     }
  31.     public static void main(String... args) throws IOException {
  32.         // Create a very simple REST adapter which points the GitHub API.
  33.         Retrofit retrofit = new Retrofit.Builder()
  34.                 .baseUrl(API_URL)
  35.                 .addConverterFactory(GsonConverterFactory.create())
  36.                 .build();
  37.         // Create an instance of our GitHub API interface.
  38.         GitHub github = retrofit.create(GitHub.class);
  40.         // Create a call instance for looking up Retrofit contributors.
  41.         Call<List<Contributor>> call = github.contributors("square", "retrofit");
  43.         // Fetch and print a list of the contributors to the library.
  44.         List<Contributor> contributors = call.execute().body();
  45.         for (Contributor contributor : contributors) {
  46.             System.out.println(contributor.login + " (" + contributor.contributions + ")");
  47.         }
  48.     }
  49. }

运行结果

  1. JakeWharton (925)
  2. swankjesse (236)
  3. pforhan (48)
  4. eburke (36)
  5. dnkoutso (26)
  6. edenman (24)
  7. NightlyNexus (24)
  8. loganj (17)
  9. Noel-96 (16)
  10. rcdickerson (14)
  11. rjrjr (13)
  12. kryali (9)
  13. adriancole (9)
  14. holmes (7)
  15. swanson (7)
  16. JayNewstrom (6)
  17. crazybob (6)
  18. Jawnnypoo (6)
  19. danrice-square (5)
  20. Turbo87 (5)
  21. naturalwarren (5)
  22. vanniktech (4)
  23. guptasourabh04 (4)
  24. artem-zinnatullin (3)
  25. codebutler (3)
  26. icastell (3)
  27. jjNford (3)
  28. f2prateek (3)
  29. PromanSEW (3)
  30. koalahamlet (3)

遗留问题

  • 这种写法会不会有SSRF问题

  • 其他更复杂的用法实现（如POST，加Header等）

  • 现在是GsonConverterFactory.create()，但如果想和Jackson联动或者Fastjson联动，应该如何操作变更。

参考资料