android使用Okhttp3网络通信

╰+攻爆jí腚メ 2023-02-11 11:28 11阅读 0赞

1.在build.gradle引入okhttp3依赖

compile 'com.squareup.okhttp3:okhttp:3.9.0'
     compile 'com.squareup.okio:okio:1.13.0'

2.在AndroidMainifest.xml加入网络请求权限

<uses-permission android:name="android.permission.INTERNET" />

创建Okhttp3工具类

import okhttp3.Callback;
    import okhttp3.FormBody;
    import okhttp3.OkHttpClient;
    import okhttp3.Request;
    
    public class OKHttpUtil {
        private OkHttpClient instance;
    
        //1.私有化构造函数
        private OKHttpUtil() {
            //2.使用DCL模式单例模式
            if (null == instance) {
                synchronized (OKHttpUtil.class) {
                    if (null == instance) {
                        instance = new OkHttpClient();
                    }
                }
            }
        }
    
        public static OKHttpUtil getInstance() {
            OKHttpUtil instance = null;
            //2.使用DCL模式单例模式
            if (null == instance) {
                synchronized (OKHttpUtil.class) {
                    if (null == instance) {
                        instance = new OKHttpUtil();
                    }
                }
            }
            return instance;
        }
    
        //封装get请求
        public void get(String urlString,FormBody formBody, Callback callback){
            Request request = new Request.Builder().url(urlString).build();
            instance.newCall(request).enqueue(callback);
        }
    
        //封装post请求
        public void post(String urlString, FormBody formBody, Callback callback){
            Request request = new Request.Builder().method("POST",formBody).url(urlString).build();
            instance.newCall(request).enqueue(callback);
        }
    }
    
    
    //    FormBody formBody = new FormBody.Builder()
    //            .add("mobile", username)
    //            .add("password", password)
    //            .build();

使用案例，本地服务要用Ip地址，localhost访问不到本机

class login implements View.OnClickListener{
    
            @Override
            public void onClick(View v) {
                if(v.getId()==R.id.button3)
                {
                   OKHttpUtil.getInstance().get("http://192.168.31.168:8080/login", null, new Callback() {
                       @Override
                       public void onFailure(Call call, IOException e) {
                           Loger.debug("eerror");
                       }
    
                       @Override
                       public void onResponse(Call call, Response response) throws IOException {
                           final String responseText=response.body().string();
                           Loger.debug("请求到的数据:" + responseText);
                       }
                   });
                }
            }
        }