android retrofit2 post/get方法上传文件到服务器
为了不因为小问题出错 上来第一步 先配置依赖 权限deng
compile 'com.squareup.retrofit2:retrofit:2.0.1'
compile 'com.squareup.retrofit2:converter-gson:2.0.1'
compile 'com.squareup.retrofit2:adapter-rxjava:2.0.1'
compile 'io.reactivex:rxandroid:1.1.0'
compile 'com.squareup.okhttp3:logging-interceptor:3.4.1'
compile 'com.squareup.okhttp3:logging-interceptor:3.4.1'
compile 'com.google.code.gson:gson:2.8.2'
第二步就是对应的权限
第三步就是对应的代码 创建一个接口对应的事你们后台的接口 这种是对应的post 请求 对应的字段传到map 一个集合 @headers是对应的接口的请求头，有的接口需要有不需要 根据自己后台的需求
public interface ApiService {
// http://wallasdet-apsai-tesasdat.launchaasdin.orgsad:500asd00/vsa1/addasdress/0xa2580adsadas8a4e3f54d2bcb529asdb99af8514e4d61f4651?page=0&limit=5
// http://wallet-apiasda-test.launchainadass.org:50sad000/vdas1/addressads/0x53b3f2sa0e02368ba8d2af21d59d9edbeea52ec28asdasa?page=0&limit=5
@Headers({"Content-Type:application/x-www-form-urlencoded",
"Content-Length:59"})
@FormUrlEncoded
@POST("v1/ipfs")
Observable getHomes(@FieldMap Map map);
} 这里面 强调一点 我用的 mvp 框架 需要 创建 modol view presen 这三层 要是不懂就看我下面的效果图
下一步 在model文件夹下创建 接口 IModel
public interface IModel {
void getUrl(String url);
}接下来对应的还是在这个文件夹里面创建 UserModel
public class UserModel implements IModel {
News list;
private OnFinish onFinish;
public interface OnFinish {
void OnFinishListener(News list);
}
public void setOnFinish(OnFinish onFinish) {
this.onFinish = onFinish;
}
@Override
public void getUrl(String url) {
Map hah=new HashMap<>();
hah.put("address","0x53b3f20e02368ba8d2af21d59d9edbeea52ec28a");
hah.put("name","config_system_switchs.txt");
hah.put("hash","111");
Retrofit retrofit = new Retrofit.Builder().baseUrl(url).addConverterFactory(GsonConverterFactory.create()).addCallAdapterFactory(RxJavaCallAdapterFactory.create()).build();
ApiService apiService = retrofit.create(ApiService.class);
Observable homes = apiService.getHomes(hah);
homes.subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
.subscribe(new Observer() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
Log.e("fsdfsdfsd", "onNext: "+e );
}
@Override
public void onNext(News news) {
Log.e("fsdfsdfsd", "onNext: "+news.getName() );
try {
savaFileToSD("wlb2.txt",news.getName());
} catch (Exception e) {
e.printStackTrace();
}
list = news;
}
});
}
public void savaFileToSD(String filename, String filecontent) throws Exception {
//如果手机已插入sd卡,且app具有读写sd卡的权限
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
// filename = Environment.getExternalStorageDirectory().getCanonicalPath() + "/" + filename;
Log.e("fsdfsdfsd", "onNext: "+filename );
//这里就不要用openFileOutput了,那个是往手机内存中写数据的
FileOutputStream output = new FileOutputStream(filename);
output.write(filecontent.getBytes());
//将String字符串以字节流的形式写入到输出流中
output.close();
//关闭输出流
}else Log.e("fsdfsdfsd", "onNext: "+"SD卡不存在或者不可读写" );
}
//https://blog.csdn.net/zadarrien_china/article/details/55226068
} 下面 是对应的 view层 在view文件夹下面创建 接口
public interface IView {
void getNews(News list);
}
接下来就是对应的P层 在对应创建P层的文件夹里面
public class Api {
public static final String HOME_URL="http://wallsddfet-api-tesdfst.launchdfsain.org:50ds000/";
// http://walfsdlet-api-tedsfst.lausfnchainfsd.org:5000df0/vfs1/addrsdfess/0xa25808a4e3f54d2bcb529b99afsdfs8514e4d61f4651?page=0&limit=5
}对应的创建一个 UserPresenter
public class UserPresenter implements UserModel.OnFinish{
private final IView userView;
private final UserModel userModel;
public UserPresenter(IView userView) {
this.userView = userView;
this.userModel = new UserModel();
userModel.setOnFinish(this);
}
public void getUser(String url){
userModel.getUrl(url);
}
@Override
public void OnFinishListener(News list) {
userView.getNews(list);
}
}对应的是一个后台数据的类型 我们全是Sting public class News {
/**
* _id : 5acf4442ebc298000188e116
* status : 1
* created_at : 2018-04-12T11:34:26.549386431Z
* updated_at : 2018-04-12T11:34:26.549386572Z
* address : 0x53b3f20e02368ba8d2af21d59d9edbeea52ec28a
* name : config_system_switchs.txt
* hash : 45646
*/
private String _id;
private int status;
private String created_at;
private String updated_at;
private String address;
private String name;
private String hash;
public String get_id() {
return _id;
}
public void set_id(String _id) {
this._id = _id;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
public String getCreated_at() {
return created_at;
}
public void setCreated_at(String created_at) {
this.created_at = created_at;
}
public String getUpdated_at() {
return updated_at;
}
public void setUpdated_at(String updated_at) {
this.updated_at = updated_at;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getHash() {
return hash;
}
public void setHash(String hash) {
this.hash = hash;
}
}
接下来就是主页面
public class MainActivity extends AppCompatActivity implements IView{
UserPresenter userPresenter;
TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv=findViewById(R.id.tv);
userPresenter=new UserPresenter(this);
userPresenter.getUser(Api.HOME_URL);
}
@Override
public void getNews(News list) {
tv.setText(list.getName());
}
}
下面对应的是post请求 以
public interface ApiService {
@FormUrlEncoded
@POST("myFav?")
Observable getHomes(@FieldMap Map map);
}