1 开始使用
// okhttp:3.8.0 里面引用了 okio:1.13.0
compile 'com.squareup.okhttp3:okhttp:3.8.0'
//MockWebServer
//testCompile 'com.squareup.okhttp3:mockwebserver:3.8.0'
String url = "https://github.com/";
final OkHttpClient okHttpClient=new OkHttpClient();
okHttpClient = new OkHttpClient.Builder()
.connectTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS)
.readTimeout(30, TimeUnit.SECONDS)
.build();
File sdcache = getExternalCacheDir();
int cacheSize = 10 * 1024 * 1024;
okHttpClient = new OkHttpClient.Builder()
.cache(new Cache(sdcache.getAbsoluteFile(), cacheSize));
.build();
2 GET
final Request request=new Request.Builder().url(url).build();
//get
new Thread(new Runnable() {
@Override
public void run() {
//
try {
Response response=okHttpClient.newCall(request).execute();
if (response.isSuccessful()){
String body=response.body().string();
String headers=response.headers().toString();
Log.i("zfq", "run: ");
}else {
Log.e("zfq", "run: "+response.code()+response.message());
}
Log.i("zfq", "run: ");
} catch (IOException e) {
e.printStackTrace();
}
//
}
}).start();
//get
okHttpClient.newCall(request).enqueue(null);
//
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.e("zfq", "onFailure: "+e.getMessage());
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String body=response.body().string();
String headers=response.headers().toString();
Log.i("zfq", "onResponse: ");
}
});
3 POST
/**
* "application/x-www-form-urlencoded"，是默认的MIME内容编码类型，一般可以用于所有的情况，但是在传输比较大的二进制或者文本数据时效率低。
这时候应该使用"multipart/form-data"。如上传文件或者二进制数据和非ASCII数据。
*/
public static final MediaType MEDIA_TYPE_NORAML_FORM = MediaType.parse("application/x-www-form-urlencoded;charset=utf-8");
//既可以提交普通键值对，也可以提交(多个)文件键值对。
public static final MediaType MEDIA_TYPE_MULTIPART_FORM = MediaType.parse("multipart/form-data;charset=utf-8");
//只能提交二进制，而且只能提交一个二进制，如果提交文件的话，只能提交一个文件,后台接收参数只能有一个，而且只能是流（或者字节数组）
public static final MediaType MEDIA_TYPE_STREAM = MediaType.parse("application/octet-stream");
public static final MediaType MEDIA_TYPE_TEXT = MediaType.parse("text/plain;charset=utf-8");
public static final MediaType MEDIA_TYPE_JSON = MediaType.parse("application/json;charset=utf-8");
MediaType MEDIA_TYPE_TEXT = MediaType.parse("text/plain;charset=utf-8");
String str = "AndroidContent";
RequestBody requestBody=RequestBody.create(MEDIA_TYPE_TEXT,str);
Request requestPost=new Request.Builder().url(url).post(requestBody).build();
MediaType MEDIA_TYPE_JSON= MediaType.parse("application/json; charset=utf-8");
String jsonStr = "[\"Android\",\"Java\",\"C#\"]";
RequestBody requestBody=RequestBody.create(MEDIA_TYPE_JSON,jsonStr);
Request requestPost=new Request.Builder().url(url).post(requestBody).build();
String paramsStr="name=zfq&qq=1212";
MediaType MEDIA_TYPE_NORAML_FORM = MediaType.parse("application/x-www-form-urlencoded;charset=utf-8");
RequestBody requestBody=RequestBody.create(MEDIA_TYPE_NORAML_FORM,paramsStr);
Request requestPost=new Request.Builder().url(url).post(requestBody).build();
MediaType MEDIA_TYPE_MARKDOWN = MediaType.parse("text/x-markdown; charset=utf-8");
File file = new File("README.md");
Request request = new Request.Builder()
.url("https://api.github.com/markdown/raw")
.post(RequestBody.create(MEDIA_TYPE_MARKDOWN, file))
.build();
Response response = okHttpClient.newCall(request).execute();
final MediaType MEDIA_TYPE_MARKDOWN = MediaType.parse("text/x-markdown; charset=utf-8");
File file = new File("README.md");
final FileInputStream fileInputStream1=new FileInputStream(file);
RequestBody requestBody1=new RequestBody() {
@Nullable
@Override
public MediaType contentType() {
return MEDIA_TYPE_MARKDOWN;
}
@Override
public void writeTo(BufferedSink sink) throws IOException {
OutputStream outputStream=sink.outputStream();
int length;
byte[] buffer = new byte[1024];
while ((length = fileInputStream1.read(buffer)) != -1) {
outputStream.write(buffer, 0, length);
}
}
};
RequestBody requestBody2=new RequestBody() {
@Nullable
@Override
public MediaType contentType() {
return MEDIA_TYPE_MARKDOWN;
}
@Override
public void writeTo(BufferedSink sink) throws IOException {
int length;
byte[] buffer = new byte[1024];
while ((length = fileInputStream1.read(buffer)) != -1) {
sink.write(buffer, 0, length);
}
}
};
Request request = new Request.Builder()
.url(url)
.post(requestBody1)
.build();
4 返回类型
Response response=okHttpClient.newCall(requestPost).execute();
//
String string=response.body().string();//
byte[] bytes= response.body().bytes();//
InputStream inputStream=response.body().byteStream();//
Reader reader=response.body().charStream();//
……
//文件保存
FileOutputStream fileOutputStream = new FileOutputStream(new File(
"android.jpg"));
//
int length;
byte[] buffer = new byte[1024];
while ((length = inputStream.read(buffer)) != -1) {
// System.out.println(length);
fileOutputStream.write(buffer, 0, length);
}
5 Headers
Request request = new Request.Builder()
.url(url)
.header("headerKey1", "headerValue1")// 设置请求头
.headers(Headers headers)// 批量设置请求头
.addHeader("headerKey2", "headerValue2")// 追加请求头
.removeHeader("headerKey2")//去除请求头
.build();
Response response=okHttpClient.newCall(request).execute();
response.header("responseHeader");
response.header("responseHeader", "defaultValue");
//
Headers headers = response.headers();
6 Form Params
MediaType CONTENT_TYPE =MediaType.parse("application/x-www-form-urlencoded");
RequestBody formBody = new FormBody.Builder()
.add("platform", "android")
.add("name", "dasd")
.add("subject", "231321")
.build();
Request request = new Request.Builder().url(url).post(formBody).build();
7 MultipartBody 上传文件同时传其他字段
- MultipartBody extends RequestBody
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addPart()
.addFormDataPart("title", "Square Logo")
.addFormDataPart("image", "logo-square.png",
RequestBody.create(MEDIA_TYPE_PNG, new File("website/static/logo-square.png")))
.build();
Request request = new Request.Builder()
.header("Authorization", "Client-ID " + IMGUR_CLIENT_ID)
.url("https://api.imgur.com/3/image")
.post(requestBody)
.build();
8 配合 Gson
Response response = okHttpClient.newCall(request).execute();
if (response.isSuccessful()){
User user = new Gson().fromJson(response.body().charStream(), User.class);
}
9 取消请求
call.cancel();//取消请求，不能取消已经准备完成的请求
okHttpClient.dispatcher().cancelAll();//取消所有请求
参考文章
