okhttp協議介紹
okhttp是一個第三方類庫,用於android中請求網絡。
這是一個開源項目,是安卓端最火熱的輕量級框架,由移動支付Square公司貢獻(該公司還貢獻了Picasso和LeakCanary) 。用於替代HttpUrlConnection和Apache HttpClient(android API23 裏已移除HttpClient)。
首先需要導入依賴
implementation ‘com.squareup.okhttp3:okhttp:3.10.0’
implementation ‘com.squareup.okhttp3:logging-interceptor:3.8.0’
效果圖
okhttp完成get請求和post請求
package com.example.day001;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class Main5Activity extends AppCompatActivity {
private Button get;
private Button post;
private String json;
private Handler handler=new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main5);
get = (Button) findViewById(R.id.get);
post = (Button) findViewById(R.id.post);
get.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
get("https://news-at.zhihu.com/api/4/news/latest");
}
});
post.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
post("https://www.apiopen.top/createUser?key=00d91e8e0cca2b76f515926a36db68f5&phone=121324&passwd=123");
}
});
}
// //網絡請求json串下載
//okhttpclient
public void get(String url){
OkHttpClient.Builder builder=new OkHttpClient.Builder();
builder.readTimeout(30, TimeUnit.SECONDS);//讀取超時
builder.connectTimeout(20,TimeUnit.SECONDS);//連接超時
OkHttpClient client=builder.build();//獲得一個客戶端對象
Request request = new Request.Builder().get().url(url).build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Toast.makeText(Main5Activity.this, "失敗", Toast.LENGTH_SHORT).show();
}
@Override
public void onResponse(Call call, Response response) throws IOException {
json = response.body().string();
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(Main5Activity.this, "內容"+json, Toast.LENGTH_SHORT).show();
}
});
}
});
}
//上傳
public void post(String url){
OkHttpClient client = new OkHttpClient.Builder().connectTimeout(5, TimeUnit.SECONDS).readTimeout(5, TimeUnit.SECONDS).build();
//表單體(放上傳的內容)
// FormBody.Builder formBody = new FormBody.Builder();
// for (String k:body.keySet()){
// formBody.add(k,body.get(k));
// }
//
// FormBody formBody1 = formBody.build();
FormBody formBody = new FormBody.Builder().add("phone", "hsy").add("password", "123").build();
Request request = new Request.Builder().post(formBody).url(url).build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Toast.makeText(Main5Activity.this, "上傳失敗", Toast.LENGTH_SHORT).show();
}
@Override
public void onResponse(Call call, Response response) throws IOException {
final String string = response.body().string();
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(Main5Activity.this, "結果是"+string, Toast.LENGTH_SHORT).show();
}
});
}
});
}
}
xml文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Main5Activity">
<Button
android:id="@+id/get"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="get請求"/>
<Button
android:id="@+id/post"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="post請求"/>
</LinearLayout>