okHttp基本使用
okHttp的异步get请求：
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url("http://10.0.2.2:8080/myweb/test.json")
.method("GET",null)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String str = response.body().string();
Log.d("TAG",str);
}
});注意onResponse的回调并不是在UI线程。
oKHttp的同步get请求：
new Thread(new Runnable() {
@Override
public void run() {
try {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url("http://10.0.2.2:8080/myweb/test.json")
.method("GET",null)
.build();
Response response = client.newCall(request).execute();
String responseData = response.body().string();
Log.d("TAG",responseData);
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();这里是同步请求网络需要在子线程中执行。
服务端搭建可参考：HttpURLConnection的post请求上传键值对和json数据
oKHttp的POST上传键值对：
RequestBody requestBody = new FormBody.Builder()
.add("username","admin")
.add("password","123456")
.build();
Request request = new Request.Builder()
.url("http://10.0.2.2:8080/test4/test")
.post(requestBody)
.build();
OkHttpClient client = new OkHttpClient();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
if(response.isSuccessful()){
Log.d("TAG",response.body().string());
}
}
});oKHttp上传JSON类型数据：
Map<String,String> map = new HashMap<String,String>();
map.put("id","5");
map.put("version","3.0");
map.put("name","beach");
Gson gson = new Gson();
String str = gson.toJson(map);
//定义上传文件类型为JSON类型
MediaType JSON = MediaType.parse("application/json; charset=utf-8");
RequestBody requestBody = RequestBody.create(JSON,str);
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url("http://10.0.2.2:8080/test4/test")
.post(requestBody)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
if(response.isSuccessful()){
Log.d("TAG",response.body().string());
}
}
});
oKHttp的post上传文件到服务器
//getFilesDir()方法用于获取/data/data//files目录
File file = new File(getFilesDir(),"okhttp.txt");
try {
FileOutputStream out = new FileOutputStream(file);
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out));
writer.write("Hello oKHttp");
writer.close();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
MediaType MEDIA_TYPE_MARKDOWN = MediaType.parse("text/x-markdown;charset=utf-8");
OkHttpClient client = new OkHttpClient();
RequestBody requestBody = RequestBody.create(MEDIA_TYPE_MARKDOWN,file);
Request request = new Request.Builder()
.url("http://10.0.2.2:8080/test4/test")
.post(requestBody)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
if(response.isSuccessful()){
Log.d("TAG",response.body().string());
}
}
});源码下载