简述:
okhttp 是一个 Java 的 HTTP+SPDY 客户端开发包,同时也支持 Android。需要Android 2.3以上。
特点
用法
private String get(String url) {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(url)
.build();
Response response = null;
try {
response = client.newCall(request).execute();
return response.body().string();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
POST需要使用RequestBody对象,之后再构建Request对象时调用post函数将其传入即可
private String post(String url) {
OkHttpClient client = new OkHttpClient();
RequestBody formBody = new FormEncodingBuilder()
.add("user", "Jurassic Park")
.add("pass", "asasa")
.add("time", "12132")
.build();
Request request = new Request.Builder()
.url(url)
.post(formBody)
.build();
Response response = null;
try {
response = client.newCall(request).execute();
return response.body().string();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
此外,post的使用方法还支持文件等操作,具体使用方法有兴趣的可以自行查阅
okHttp还自带了对Gson的支持
private Person gson(String url){
OkHttpClient client = new OkHttpClient();
Gson gson = new Gson();
Request request = new Request.Builder()
.url(url)
.build();
Response response = null;
try {
response = client.newCall(request).execute();
Person person = gson.fromJson(response.body().charStream(), Person.class);
return person;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
以上的两个例子必须在子线程中完成,同时okHttp还提供了异步的方法调用,通过使用回调来进行异步调用,然后okHttp的回调依然不在主线程中,因此该回调中不能操作UI
private void getAsync(String url) {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(url)
.build();
Response response = null;
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
}
@Override
public void onResponse(Response response) throws IOException {
String result = response.body().string();
Toast.makeText(getApplicationContext(),result,Toast.LENGTH_SHORT).show();
//不能操作ui,回调依然在子线程
Log.d("TAG", result);
}
});
}
okHttp的使用还有很多内容,这里也不过多介绍,更多内容,参考官方网址