Rxjava2+retrofit2封装 post 固定json参数
需求:服务端要求请求方式为post,传递参数为json格式
在请求后台服务时,移动端又要每次携带固定参数
普通的@post 然后通过@Query设置参数 无法满足需求
经一番查询post Json需要通过okhttp中拦截器实现
//post数据
RequestBody body = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), json.toString());
拦截器添加了返回结果输出
client.addInterceptor(new Interceptor() {
@Override
public okhttp3.Response intercept(Chain chain) throws IOException {
//获得请求信息，
Request originalRequest = chain.request();
// 返回添加body的请求
Request requests = setupRequestBody(originalRequest);
log.i(requests.url());
//记录请求耗时
long startNs = System.nanoTime();
okhttp3.Response response;
try {
//发送请求，获得相应，
response = chain.proceed(requests);
} catch (Exception e) {
e.printStackTrace();
throw e;
}
long tookMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNs);
//打印请求耗时
log.i("耗时:" + tookMs + "ms");
//获得返回的body，注意此处不要使用responseBody.string()获取返回数据，原因在于这个方法会消耗返回结果的数据(buffer)
ResponseBody responseBody = response.body();
//为了不消耗buffer，我们这里使用source先获得buffer对象，然后clone()后使用
BufferedSource source = responseBody.source();
source.request(Long.MAX_VALUE); // Buffer the entire body.
//获得返回的数据
Buffer buffer = source.buffer();
//使用前clone()下，避免直接消耗
log.i("response:" + buffer.clone().readString(Charset.forName("UTF-8")));
return response;
}
});
private Request setupRequestBody(Request oldRequests) {
JSONObject json = getBaseJson();
RequestBody body = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), json.toString());
log.i("requestBody-json", json.toString());
//返回一个新的RequestBody
return oldRequests.newBuilder()
.url(oldRequests.url())
.method(oldRequests.method(), body)
.build();
}
这里getBaseJson是后台服务要求json数据.
除了固定参数,有时json还需要添加其他参数
所以需要定义一个向BaseJson添加数据的接口
public MaRetrofit addJson(String key, String value) {
try {
getBaseJson().put(key, value);
} catch (JSONException e) {
e.printStackTrace();
}
return this;
}
下面首先Retrofit类全部代码
public class MaRetrofit {
LogUtils log = LogUtils.hLog();
Retrofit retrofit;
OkHttpClient.Builder client;
JSONObject postJson;
public MaRetrofit() {
if (client == null) {
client = new OkHttpClient.Builder();
}
addInterceptor();
}
public Retrofit create() {
retrofit = new Retrofit.Builder()
.client(client.build())
.baseUrl(Constants.URL + "/")
.addConverterFactory(GsonConverterFactory.create())
//添加返回rx对象
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build();
return retrofit;
}
public UrlServiceInterface getUrlServiceInterface() {
if (retrofit == null) {
retrofit = new Retrofit.Builder()
.client(client.build())
.baseUrl(Constants.URL + "/")
.addConverterFactory(GsonConverterFactory.create())
//添加返回rx对象
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build();
}
return retrofit.create(UrlServiceInterface.class);
}
public MaRetrofit addJson(String key, String value) {
try {
getBaseJson().put(key, value);
} catch (JSONException e) {
e.printStackTrace();
}
return this;
}
private JSONObject getBaseJson() {
if (postJson == null) {
postJson = new JsonBean().getJson(MaApplication.getContext());
}
return postJson;
}
public Retrofit addInterceptor() {
if (client == null) {
return null;
}
client.addInterceptor(new Interceptor() {
@Override
public okhttp3.Response intercept(Chain chain) throws IOException {
//获得请求信息，
Request originalRequest = chain.request();
// 返回添加body的请求
Request requests = setupRequestBody(originalRequest);
log.i(requests.url());
//记录请求耗时
long startNs = System.nanoTime();
okhttp3.Response response;
try {
//发送请求，获得相应，
response = chain.proceed(requests);
} catch (Exception e) {
e.printStackTrace();
throw e;
}
long tookMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNs);
//打印请求耗时
log.i("耗时:" + tookMs + "ms");
//获得返回的body，注意此处不要使用responseBody.string()获取返回数据，原因在于这个方法会消耗返回结果的数据(buffer)
ResponseBody responseBody = response.body();
//为了不消耗buffer，我们这里使用source先获得buffer对象，然后clone()后使用
BufferedSource source = responseBody.source();
source.request(Long.MAX_VALUE); // Buffer the entire body.
//获得返回的数据
Buffer buffer = source.buffer();
//使用前clone()下，避免直接消耗
log.i("response:" + buffer.clone().readString(Charset.forName("UTF-8")));
return response;
}
});
return retrofit;
}
private Request setupRequestBody(Request oldRequests) {
JSONObject json = getBaseJson();
RequestBody body = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), json.toString());
log.i("requestBody-json", json.toString());
//返回一个新的RequestBody
return oldRequests.newBuilder()
.url(oldRequests.url())
.method(oldRequests.method(), body)
.build();
}
}
UrlServiceInterface.class就是一些url请求方法名了
示例
由于参数都是又post json传递了所以这里goLogin就不需要在添加参数了
public interface UrlServiceInterface {
String URL_LOGIN = "xxxx/xxxxx/valid_verify_code";
String moblie = "mobile";
String verifyCode = "verifyCode";
/**
* 登录
* 添加参数 mobile
* 添加参数 verifyCode
*/
@POST(URL_LOGIN)
Observable> goLogin();
//如果不需要使用rxjava直接返回call对象即可
@POST(URL_LOGIN)
Call> goLoginCall();
}
}
到这里retrofit2就简单封装完毕了
根据需要选择直接返回retrofit还是返回UrlServiceInterface对象
如果不使用rxjava的使用方式
UrlServiceInterface loginService = new MaRetrofit()
.addJson(UrlServiceInterface.moblie, tel)
.addJson(UrlServiceInterface.verifyCode, code)
.getUrlServiceInterface();
Call> call = loginService.goLoginCall();
call.enqueue(new Callback>() {
@Override
public void onResponse(retrofit2.Call> call, Response> response) {
//处理response返回对象
}
@Override
public void onFailure(retrofit2.Call> call, Throwable t) {
}
});
BaseEntity.java
public class BaseEntity implements Serializable {
/**
* code :
* message :
* resultData : {}
* success :
* token :
*/
private String code;
private String message;
public T resultData;
private boolean success;
private String token;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public boolean isSuccess() {
return success;
}
public void setSuccess(boolean success) {
this.success = success;
}
public String getToken() {
return token;
}
public void setToken(String token) {
this.token = token;
}
}
如果rxjava和retrofit结合,
先封装一个RxSchedulers
public class RxSchedulers {
public static ObservableTransformer ioMain() {
return new ObservableTransformer() {
@Override
public ObservableSource apply(@NonNull Observable upstream) {
return upstream.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread());
}
};
}
}
然后简单封装一个Observable对象
public abstract class BaseObserver implements Observer> {
private Context mContext;
LogUtils log = LogUtils.hLog();
private Disposable mDisposable;
public BaseObserver(Context context) {
mContext = context;
}
@Override
public void onSubscribe(Disposable d) {
mDisposable = d;
}
@Override
public void onNext(BaseEntity value) {
//根据判断选择返回正确对象
if (value.isSuccess()) {
T t = value.resultData;
if(t!=null){
onHandleSuccess(t);
}
} else {
onHandleError(value.getCode(), value.getMessage());
}
//有时需要返回的全部对象
onHandle(value);
}
@Override
public void onError(Throwable e) {
log.d(" ", "error:" + e.toString());
Toast.makeText(mContext, "网络异常，请稍后再试", Toast.LENGTH_LONG).show();
}
@Override
public void onComplete() {
}
public abstract void onHandleSuccess(T t);
public void onHandle(BaseEntity baseEntity){
};
public void onHandleError(String code, String message) {
Toast.makeText(mContext, message + code, Toast.LENGTH_LONG).show();
}
}
下面使用rxjava和retrofit结合使用网络请求
UrlServiceInterface loginService = new MaRetrofit()
.addJson(UrlServiceInterface.moblie, tel)
.addJson(UrlServiceInterface.verifyCode, code)
.getUrlServiceInterface();
Observable> observable = loginService.goLogin();
observable.compose(RxSchedulers.>ioMain())
.subscribe(new BaseObserver(this) {
@Override
public void onHandleSuccess(Bean bean) {
//正常数据返回
}
@Override
public void onHandle(BaseEntity baseEntity) {
super.onHandle(baseEntity);
//根据需要使用BaseEntity
}
});
gradle引用包列表
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
compile 'io.reactivex.rxjava2:rxjava:2.1.0'
compile 'com.google.code.gson:gson:2.6.2'
compile 'com.squareup.retrofit2:converter-gson:2.1.0'//转换器，请求结果转换成Model
compile 'com.squareup.retrofit2:adapter-rxjava2:2.2.0'
compile 'com.squareup.okhttp3:okhttp:3.6.0'
结合网上许多资源 ,然后根据自己需求封装,
如果对你有帮助
点个赞就行
github地址:https://github.com/hanjole/rxjava2retrofit2Succinct