Android网络框架---OkHttp3

1、添加依赖 compile 'com.squareup.okhttp3:okhttp:3.4.2'
　　project Structure-->dependencied/搜索okhttp.

compile 'com.squareup.okhttp3:okhttp:3.4.2'

2、添加权限
　<uses-permission android:name="android.permission.INTERNET"/>

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

  1 public class MainActivity extends AppCompatActivity {
  2 
  3     @Override
  4     protected void onCreate(Bundle savedInstanceState) {
  5         super.onCreate(savedInstanceState);
  6         setContentView(R.layout.activity_main);
  7     }
  8 
  9     //基本请求默认GET请求
 10     public void net1(View v){
 11         //可以通过构造方法来使用。使用Builder模式可以设置一些属性
 12 //        OkHttpClient client = new OkHttpClient();
 13         //缓存的请求的数据，json字符串,
 14         //Cache questCache = new Cache(new File("cache"),1024);
 15         OkHttpClient client = new OkHttpClient.Builder()
 16                 //读取超时5s
 17                 .readTimeout(5000, TimeUnit.MILLISECONDS)
 18                 //自带缓存,缓存可做可不做，做了就是让刷新的时候方便些，不会重复去请求同一个url多次
 19                 //.cache(questCache)
 20                 .build();
 21 
 22         //默认GET请求
 23         Request request = new Request.Builder()
 24                 .url("https://www.baidu.com")
 25                 .build();
 26 
 27         //call就是我们可以执行的请求类
 28         Call call = client.newCall(request);
 29 
 30 
 31 //        try {
 32 //            //同步方法，程序运行到这里会等待，所以这里我们不用这个方法
 33 //            Response execute = call.execute();
 34 //        } catch (IOException e) {
 35 //            e.printStackTrace();
 36 //        }
 37 
 38         //异步请求
 39         call.enqueue(new Callback() {
 40             @Override
 41             public void onFailure(Call call, IOException e) {
 42                 Log.e("TAG","请求失败");
 43             }
 44 
 45             @Override
 46             public void onResponse(Call call, Response response) throws IOException {
 47                 //子线程
 48                 Log.e("TAG",Thread.currentThread().getName()+"---结果："+response.body().string());
 49                 //修改UI使用 runOnUiThread();或者使用Handler发送更新UI消息给主线程
 50             }
 51         });
 52 
 53         //取消
 54 //        call.cancel();
 55     }
 56 
 57     //POST请求
 58     public void net2(View v){
 59         OkHttpClient client = new OkHttpClient.Builder()
 60                 .readTimeout(5000,TimeUnit.MILLISECONDS)
 61                 .build();
 62 
 63         //创建Form表单对象，可以add多个键值对
 64         RequestBody body = new FormBody.Builder()
 65                 .add("showapi_appid","27306")
 66                 .add("showapi_sign","150e9206e7f542bab4affe49d73cb920")
 67                 .build();
 68 
 69         Request request = new Request.Builder().url("http://route.showapi.com/578-6")
 70                 .post(body)//添加参数
 71                 .build();
 72 
 73         Call call = client.newCall(request);
 74         call.enqueue(new Callback() {
 75             @Override
 76             public void onFailure(Call call, IOException e) {
 77                 Log.e("TAG","请求失败");
 78             }
 79 
 80             @Override
 81             public void onResponse(Call call, Response response) throws IOException {
 82                 Log.e("TAG","---->"+response.toString());
 83                 //子线程
 84             }
 85         });
 86 
 87     }
 88 
 89     //文件上传
 90     public void net3(View v){
 91         OkHttpClient client = new OkHttpClient.Builder()
 92                 .readTimeout(5000,TimeUnit.MILLISECONDS)
 93                 .build();
 94 
 95         //添加多个文件
 96         RequestBody fileBody = MultipartBody.create(MediaType.parse("application/octet-stream"),new File("上传的文件地址"));
 97 
 98 
 99         RequestBody body = new MultipartBody.Builder()
100                 //设置为表单类型
101                 .setType(MultipartBody.FORM)
102                 //添加表单键值
103                 .addFormDataPart("image头像字段名称","name文件名称",fileBody)
104                 .build();
105 
106         Request request = new Request.Builder()
107                 .url("http://192.168.18.250")
108                 .post(body)
109                 .build();
110 
111         Call call = client.newCall(request);
112         call.enqueue(new Callback() {
113             @Override
114             public void onFailure(Call call, IOException e) {
115 
116             }
117 
118             @Override
119             public void onResponse(Call call, Response response) throws IOException {
120                 //子线程
121             }
122         });
123     }
124 }

MainActivity.java

参考资料：

http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2015/0106/2275.html