OkHttp简单使用

OkHttp是一个轻量优秀的网络框架。用于替代HttpUrlConnection和Apache HttpClient(android API23 6.0里已移除HttpClient,)

使用方法：

1、在 build.gradle中添加okHttp依赖　

 //okHttp
    implementation 'com.squareup.okhttp3:okhttp:3.11.0'

2、创建一个全局的OkHttpClient　

//全局使用一个OkHttpClient
    private static final OkHttpClient client=new OkHttpClient();

3、Get请求

public static String Get(String url) {
        String result = null;
        Request request = new Request.Builder()
                .url(url)
                .build();
        try {
            Response response = client.newCall(request).execute();
            result = response.body().string();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }

4、POST请求（通过键值对传递参数）

 public static String Post(String url, List<NameValuePair> paramList) {
        String result = null;
        FormBody.Builder builder = new FormBody.Builder();
        for (NameValuePair param : paramList) {
            builder.add(param.getName(), param.getValue());
        }
        FormBody formBody = builder.build();
        Request request = new Request.Builder().url(url).post(formBody).build();
        try {
            Response response = client.newCall(request).execute();
            result = response.body().string();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }