Javaライブラリ「OkHttp」の簡単なサンプル
事前に、ローカルにサーバーを立てて置いて下さい。
MainActivity.java
package com.example.test.testokhttp;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import java.io.IOException;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url("http://192.168.43.201:3000/users")
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
System.out.println("response: " + response.body().string());
}
});
}
}
build.gradle
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:24.1.1'
compile 'com.squareup.okhttp3:okhttp:3.3.1'
}
headerを設定したい場合は、こういう書き方でもいい
MainActivity.java
package com.example.test.testokhttp;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import java.io.IOException;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Interceptor;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
httpClient.addInterceptor(new Interceptor() {
@Override
public Response intercept(Chain chain) throws IOException {
Request original = chain.request();
//header設定
Request request = original.newBuilder()
.header("Accept", "application/json")
.method(original.method(), original.body())
.build();
Response response = chain.proceed(request);
return response;
}
});
OkHttpClient client = httpClient.build();
Request request = new Request.Builder()
.url("http://192.168.43.201:3000/users")
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
System.out.println("response: " + response.body().string());
}
});
}
}
Author And Source
この問題について(Javaライブラリ「OkHttp」の簡単なサンプル), 我々は、より多くの情報をここで見つけました https://qiita.com/joji/items/ebc9d6f79cf6c86cd7a6著者帰属:元の著者の情報は、元のURLに含まれています。著作権は原作者に属する。
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