使用前的准备
public static final String BAI_DU = "https://www.baidu.com";
public static final String TAO_BAO = "http://api.k780.com:88/?app=phone.get&phone=13800138000&appkey=10003&sign=b59bc3ef6191eb9f747dd4e83c99f2a4&format=json";
public static final String TAO_BAO_HTTP = "http://api.k780.com:88";
public static final String UPLOAD_FILE_HTTP = "https://api.github.com/markdown/raw";
public static final String IMAGE_URL_1 = "https://ss.csdn.net/p?https://mmbiz.qpic.cn/mmbiz_jpg/trm5VMeFp9mJejJH2asZZT0ML63erOW3QAMSkjEMsLwByykbJwsHj7QmPbQDDUU43BJpHTXxyiaY24LXlA6zKDQ/640?wx_fmt=jpeg";
public static final String IMAGE_URL_2 = "http://imgup01.myra2.com/2017-04/13/11/1492055267740_0.jpg";
依赖OkHttp3框架
dependencies {
/** 添加网络数据为Gson的数据*/
implementation "com.google.code.gson:gson:2.8.0"
/** 添加网络框架OkHttp3*/
implementation 'com.squareup.okhttp3:okhttp:3.12.1'
/** 添加网络框架OkHttp3 的依赖io组件*/
implementation 'com.squareup.okio:okio:1.7.0'
}
实例化OkHttpClient
private void initData() {
File sdCache = mContext.getExternalCacheDir();
int cacheSize = 10 * 1024 * 1024;
OkHttpClient.Builder okHttpClientBuilder = new OkHttpClient.Builder().
connectTimeout(15,TimeUnit.SECONDS).
writeTimeout(20,TimeUnit.SECONDS).
readTimeout(20,TimeUnit.SECONDS).
cache(new Cache(sdCache.getAbsoluteFile(),cacheSize));
mOkHttpClient = okHttpClientBuilder.build();
}
1. 异步Get请求
public static void getRequest(OkHttpClient okHttpClient, String url,final TextView textView){
Request.Builder requestBuilder = new Request.Builder().
url(url).
method("GET",null);
Request request = requestBuilder.build();
Call call = okHttpClient.newCall(request);
call.enqueue(new CallbackToMainThread(new CallbackToMainThread.Callback<String>() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, String response){
textView.setText(response);
}
@Override
public String getTClassName() {
return String.class.getName();
}
}));
}
1.上面是简单的使用Get的异步请求，如果想用同步请求的话可以调用Call.execute()方法。2.正常情况下结果回调是在子线程内的，这里为什么能在回调内更新UI是因为做了一个简单的封装让回调回到UI线程内执行。3.具体的CallbackToMainThread类会在后面做具体的分析。
2. 异步Post请求
public static void postRequest(OkHttpClient okHttpClient, String url,final TextView textView){
FormBody.Builder formBodyBuilder = new FormBody.Builder();
formBodyBuilder.add("app","phone.get").
add("phone","13800138000").
add("appkey","10003").
add("sign","b59bc3ef6191eb9f747dd4e83c99f2a4").
add("format","json");
RequestBody requestBody = formBodyBuilder.build();
Request request = new Request.Builder().
url(url).
post(requestBody).
build();
Call call = okHttpClient.newCall(request);
call.enqueue(new CallbackToMainThread(new CallbackToMainThread.Callback<String>() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, String response){
JsonModel jsonModel = new Gson().fromJson(response,JsonModel.class);
String result = "success:"+jsonModel.success+"\n"+"status:"+jsonModel.result.status+"\n"+
"phone:"+jsonModel.result.phone+"\n"+"area:"+jsonModel.result.area+"\n"+
"postNum:"+jsonModel.result.postNum+"\n"+"att:"+jsonModel.result.att+"\n"+
"type:"+jsonModel.result.type+"\n"+"par:"+jsonModel.result.par+"\n"+
"prefix:"+jsonModel.result.prefix+"\n"+"operators:"+jsonModel.result.operators+"\n"+
"styleSimCall:"+jsonModel.result.styleSimCall+"\n"+"styleCityName:"+jsonModel.result.styleCityName;
textView.setText(result);
}
@Override
public String getTClassName() {
return String.class.getName();
}
}));
}
1.通过RequestBody传递请求参数。2.通过FormBody.Builder来封装并生成RequestBody。3.通过Gson解析Json数据
3. 异步上传文件
public static void postFileRequest(OkHttpClient okHttpClient, String url,final TextView textView){
MediaType mediaType = MediaType.parse("text/x-markdown; charset=utf-8");
String filePath = "";
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
filePath = Environment.getExternalStorageDirectory().getAbsolutePath();
}else {
return;
}
File file = new File(filePath,"wuyazhou.txt");
Request request = new Request.Builder().
url(url).
post(RequestBody.create(mediaType,file)).
build();
Call call = okHttpClient.newCall(request);
call.enqueue(new CallbackToMainThread(new CallbackToMainThread.Callback<String>() {
@Override
public void onFailure(Call call, IOException e) {
LogShowUtil.addLog("OkHttp",e.getMessage());
textView.setText("error");
}
@Override
public void onResponse(Call call, String response) throws IOException {
textView.setText(response);
}
@Override
public String getTClassName() {
return String.class.getName();
}
}));
}
1.异步上传文件本质是Post请求。2.通过RequestBody.create(mediaType,file)方法生成要上传的RequestBody。3.MediaType决定上传文件的类型。
4. 异步下载文件
public static void getImageRequest(OkHttpClient okHttpClient, String url, final ImageView imageView){
Request request = new Request.Builder().url(url).method("GET",null).build();
Call call = okHttpClient.newCall(request);
call.enqueue(new CallbackToMainThread(new CallbackToMainThread.Callback<Bitmap>() {
@Override
public void onFailure(Call call, IOException e) {
LogShowUtil.addLog("OkHttp",e.getMessage());
}
@Override
public void onResponse(Call call, Bitmap response) throws IOException {
imageView.setImageBitmap(response);
}
@Override
public String getTClassName() {
return Bitmap.class.getName();
}
}));
}
1.异步下载文件本质是Get请求。2.此处我们做了简单的封装，将返回数据转化成了Bitmap。
5. 异步上传Multipart文件
public static void postMultipartRequest(OkHttpClient okHttpClient, String url, final TextView textView){
MediaType mediaType = MediaType.parse("text/x-markdown; charset=utf-8");
String filePath = "";
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
filePath = Environment.getExternalStorageDirectory().getAbsolutePath();
}else {
return;
}
File file = new File(filePath,"wuyazhou.txt");
RequestBody requestBody = new MultipartBody.Builder().
setType(MultipartBody.FORM).
addFormDataPart("title","wuyazhou").
addFormDataPart("txt","wuyazhou.txt",RequestBody.create(mediaType,file)).
build();
Request request = new Request.Builder().url(url).post(requestBody).build();
Call call = okHttpClient.newCall(request);
call.enqueue(new CallbackToMainThread(new CallbackToMainThread.Callback<String>() {
@Override
public void onFailure(Call call, IOException e) {
textView.setText("只是一个示例，不会成功的");
}
@Override
public void onResponse(Call call, String response) throws IOException {
textView.setText(response);
}
@Override
public String getTClassName() {
return String.class.getName();
}
}));
}
1.通过MultipartBody.Builder来封装要上传的文件和请求参数。2.MultipartBody.Builder().build()生成要上传的RequestBody。
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