app/build.gradle添加依賴
implementation 'com.squareup.retrofit2:retrofit:2.3.0'
implementation 'com.squareup.okhttp3:okhttp:3.10.0'
implementation 'com.google.code.gson:gson:2.8.2'
implementation 'com.squareup.retrofit2:converter-gson:2.0.0-beta3'
- 根據(jù)json文件創(chuàng)建 用于接收服務(wù)器返回數(shù)據(jù) 的類
- 創(chuàng)建 用于描述網(wǎng)絡(luò)請求 的接口
public interface BookSearch_interface {
// @Query 用于 @GET 方法的查詢參數(shù)（Query = Url 中 ‘?’ 后面的 key-value）
@GET("book/search")
Call<BookSearchResponse> getSearchBooks(@Query("q") String name,
@Query("tag") String tag, @Query("start") int start,
@Query("count") int count);
}
- 完成請求操作
private void requestBooks(){
// 創(chuàng)建Retrofit對象
Retrofit retrofit=new Retrofit.Builder()
.baseUrl("https://api.douban.com/v2/")
//設(shè)置使用Gson解析
.addConverterFactory(GsonConverterFactory.create())
.build();
// 創(chuàng)建 網(wǎng)絡(luò)請求接口 的實例
BookSearch_interface service=retrofit.create(BookSearch_interface.class);
//對 發(fā)送請求 進(jìn)行封裝
Call<BookSearchResponse> call=service.getSearchBooks("小王子", "", 0, 3);
// 異步 發(fā)送網(wǎng)絡(luò)請求
call.enqueue(new Callback<BookSearchResponse>() {
@Override
public void onResponse(Call<BookSearchResponse> call, Response<BookSearchResponse> response) {
Log.d(TAG, "onResponse");
//Log.d(TAG,response.body().toString());
for(int i=0;i<response.body().books.size();i++){
if(i==0){
Log.d(TAG,"count : "+response.body().count);
Log.d(TAG,"start : "+response.body().start);
Log.d(TAG,"total : "+response.body().total);
}
Log.d(TAG,"books author : "+response.body().books.get(i).author[0]);
Log.d(TAG,"books origin_title : "+response.body().books.get(i).origin_title);
Log.d(TAG,"books pubdate : "+response.body().books.get(i).pubdate);
}
}
@Override
public void onFailure(Call<BookSearchResponse> call, Throwable t) {
Log.d(TAG,"onFailure");
t.printStackTrace();
}
});
}
- 查看結(jié)果
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: onResponse
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: count : 3
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: start : 0
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: total : 849
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books author : [法] 圣氨钛郏克蘇佩里
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books origin_title : Le Petit Prince
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books pubdate : 2003-8
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books author : （法）圣把闵纾克蘇佩里
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books origin_title :
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books pubdate : 2000-9-1
03-03 14:38:18.046 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books author : 圣艾修伯里
03-03 14:38:18.047 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books origin_title :
03-03 14:38:18.047 9985-9985/com.shpun.retrofitokhttprxjavatest D/MainActivity: books pubdate : 2006-1
以上是GET的用法所坯，POST的要在定義接口時使用注解@FormUrlEncoded
@POST("")
@Field
其他使用方法則類似
