我读了一些将jsons发布到服务器的例子。
有人说：OkHttp是HttpUrlConnection接口的实现 由Java提供。它提供了用于编写内容的输入流 我不知道（或关心）该内容的格式。
现在我想使用名称和密码的参数对URL进行正常发布。
这意味着我需要自己将名称和值对编码为流吗？
答案 0 :(得分：92)
根据the docs，OkHttp版本3将global替换为FormEncodingBuilder和FormBody，因此旧示例不再适用。
现在对表单和多部分主体进行建模。我们已经取代了不透明的
FormBody.Builder()具有更强大的FormEncodingBuilder和FormBodyFormBody.Builder组合。同样，我们已将
MultipartBuilder升级为MultipartBody，MultipartBody.Part和MultipartBody.Builder。
因此，如果您正在使用OkHttp 3.x，请尝试以下示例：
OkHttpClient client = new OkHttpClient();
RequestBody formBody = new FormBody.Builder()
.add("message", "Your message")
.build();
Request request = new Request.Builder()
.url("http://www.foo.bar/index.php")
.post(formBody)
.build();
try {
Response response = client.newCall(request).execute();
// Do something with the response.
} catch (IOException e) {
e.printStackTrace();
}
答案 1 :(得分：74)
目前接受的答案已过时。现在，如果您要创建帖子请求并向其添加参数，则应将MultipartBody.Builder用作Mime Craft now is deprecated。
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("somParam", "someValue")
.build();
Request request = new Request.Builder()
.url(BASE_URL + route)
.post(requestBody)
.build();
答案 2 :(得分：36)
private final OkHttpClient client = new OkHttpClient();
public void run() throws Exception {
RequestBody formBody = new FormEncodingBuilder()
.add("search", "Jurassic Park")
.build();
Request request = new Request.Builder()
.url("https://en.wikipedia.org/w/index.php")
.post(formBody)
.build();
Response response = client.newCall(request).execute();
if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);
System.out.println(response.body().string());
}
答案 3 :(得分：18)
您需要通过使用URLEncoder转义字符串并使用"="和"&"加入字符串来自行编码。或者您可以使用FormEncoder中的Mimecraft来为您提供便利的构建器。
FormEncoding fe = new FormEncoding.Builder()
.add("name", "Lorem Ipsum")
.add("occupation", "Filler Text")
.build();
答案 4 :(得分：12)
你可以这样：
MediaType JSON = MediaType.parse("application/json; charset=utf-8");
RequestBody body = RequestBody.create(JSON, "{"jsonExample":"value"}");
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(url)
.post(body)
.addHeader("Authorization", "header value") //Notice this request has header if you don't need to send a header just erase this part
.build();
Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
Log.e("HttpService", "onFailure() Request was: " + request);
e.printStackTrace();
}
@Override
public void onResponse(Response r) throws IOException {
response = r.body().string();
Log.e("response ", "onResponse(): " + response );
}
});
答案 5 :(得分：3)
这是在没有请求主体的情况下实现OKHTTP发布请求的可能解决方案之一。
RequestBody reqbody = RequestBody.create(null, new byte[0]);
Request.Builder formBody = new Request.Builder().url(url).method("POST",reqbody).header("Content-Length", "0");
clientOk.newCall(formBody.build()).enqueue(OkHttpCallBack());
答案 6 :(得分：3)
要将okhttp添加为依赖项，请执行以下操作
现在你有okhttp作为依赖
现在设计一个如下界面，这样我们就可以在收到网络响应后对我们的活动进行回调。
public interface NetworkCallback {
public void getResponse(String res);
}
我创建了一个名为NetworkTask的类，因此我可以使用此类来处理所有网络请求
public class NetworkTask extends AsyncTask<String , String, String>{
public NetworkCallback instance;
public String url ;
public String json;
public int task ;
OkHttpClient client = new OkHttpClient();
public static final MediaType JSON
= MediaType.parse("application/json; charset=utf-8");
public NetworkTask(){
}
public NetworkTask(NetworkCallback ins, String url, String json, int task){
this.instance = ins;
this.url = url;
this.json = json;
this.task = task;
}
public String doGetRequest() throws IOException {
Request request = new Request.Builder()
.url(url)
.build();
Response response = client.newCall(request).execute();
return response.body().string();
}
public String doPostRequest() throws IOException {
RequestBody body = RequestBody.create(JSON, json);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
Response response = client.newCall(request).execute();
return response.body().string();
}
@Override
protected String doInBackground(String[] params) {
try {
String response = "";
switch(task){
case 1 :
response = doGetRequest();
break;
case 2:
response = doPostRequest();
break;
}
return response;
}catch (Exception e){
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
instance.getResponse(s);
}
}
现在让我演示如何获取回调活动
public class MainActivity extends AppCompatActivity implements NetworkCallback{
String postUrl = "http://your-post-url-goes-here";
String getUrl = "http://your-get-url-goes-here";
Button doGetRq;
Button doPostRq;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = findViewById(R.id.button);
doGetRq = findViewById(R.id.button2);
doPostRq = findViewById(R.id.button1);
doPostRq.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MainActivity.this.sendPostRq();
}
});
doGetRq.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MainActivity.this.sendGetRq();
}
});
}
public void sendPostRq(){
JSONObject jo = new JSONObject();
try {
jo.put("email", "yourmail");
jo.put("password","password");
} catch (JSONException e) {
e.printStackTrace();
}
// 2 because post rq is for the case 2
NetworkTask t = new NetworkTask(this, postUrl, jo.toString(), 2);
t.execute(postUrl);
}
public void sendGetRq(){
// 1 because get rq is for the case 1
NetworkTask t = new NetworkTask(this, getUrl, jo.toString(), 1);
t.execute(getUrl);
}
@Override
public void getResponse(String res) {
// here is the response from NetworkTask class
System.out.println(res)
}
}
答案 7 :(得分：2)
您应该查看lynda.com上的教程。下面是一个如何编码参数，发出HTTP请求然后解析对json对象的响应的示例。
public JSONObject getJSONFromUrl(String str_url, List<NameValuePair> params) {
String reply_str = null;
BufferedReader reader = null;
try {
URL url = new URL(str_url);
OkHttpClient client = new OkHttpClient();
HttpURLConnection con = client.open(url);
con.setDoOutput(true);
OutputStreamWriter writer = new OutputStreamWriter(con.getOutputStream());
writer.write(getEncodedParams(params));
writer.flush();
StringBuilder sb = new StringBuilder();
reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
reply_str = sb.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
// try parse the string to a JSON object. There are better ways to parse data.
try {
jObj = new JSONObject(reply_str);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return jObj;
}
//in this case it's NameValuePair, but you can use any container
public String getEncodedParams(List<NameValuePair> params) {
StringBuilder sb = new StringBuilder();
for (NameValuePair nvp : params) {
String key = nvp.getName();
String param_value = nvp.getValue();
String value = null;
try {
value = URLEncoder.encode(param_value, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
if (sb.length() > 0) {
sb.append("&");
}
sb.append(key + "=" + value);
}
return sb.toString();
}
答案 8 :(得分：2)
protected Void doInBackground(String... movieIds) {
for (; count <= 1; count++) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
Resources res = getResources();
String web_link = res.getString(R.string.website);
OkHttpClient client = new OkHttpClient();
RequestBody formBody = new FormBody.Builder()
.add("name", name)
.add("bsname", bsname)
.add("email", email)
.add("phone", phone)
.add("whatsapp", wapp)
.add("location", location)
.add("country", country)
.add("state", state)
.add("city", city)
.add("zip", zip)
.add("fb", fb)
.add("tw", tw)
.add("in", in)
.add("age", age)
.add("gender", gender)
.add("image", encodeimg)
.add("uid", user_id)
.build();
Request request = new Request.Builder()
.url(web_link+"edit_profile.php")
.post(formBody)
.build();
try {
Response response = client.newCall(request).execute();
JSONArray array = new JSONArray(response.body().string());
JSONObject object = array.getJSONObject(0);
hashMap.put("msg",object.getString("msgtype"));
hashMap.put("msg",object.getString("msg"));
// Do something with the response.
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
答案 9 :(得分：1)
这是我发布帖子请求的方法 首先传递方法地图和数据，如
HashMap<String, String> param = new HashMap<String, String>();
param.put("Name", name);
param.put("Email", email);
param.put("Password", password);
param.put("Img_Name", "");
final JSONObject result = doPostRequest(map,Url);
public static JSONObject doPostRequest(HashMap<String, String> data, String url) {
try {
RequestBody requestBody;
MultipartBuilder mBuilder = new MultipartBuilder().type(MultipartBuilder.FORM);
if (data != null) {
for (String key : data.keySet()) {
String value = data.get(key);
Utility.printLog("Key Values", key + "-----------------" + value);
mBuilder.addFormDataPart(key, value);
}
} else {
mBuilder.addFormDataPart("temp", "temp");
}
requestBody = mBuilder.build();
Request request = new Request.Builder()
.url(url)
.post(requestBody)
.build();
OkHttpClient client = new OkHttpClient();
Response response = client.newCall(request).execute();
String responseBody = response.body().string();
Utility.printLog("URL", url);
Utility.printLog("Response", responseBody);
return new JSONObject(responseBody);
} catch (UnknownHostException | UnsupportedEncodingException e) {
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
} catch (JSONException e1) {
e1.printStackTrace();
}
Log.e(TAG, "Error: " + e.getLocalizedMessage());
} catch (Exception e) {
e.printStackTrace();
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
} catch (JSONException e1) {
e1.printStackTrace();
}
Log.e(TAG, "Other Error: " + e.getLocalizedMessage());
}
return null;
}
答案 10 :(得分：0)
compile 'com.squareup.okhttp3:okhttp:3.7.0'
OkHttpClient client = new OkHttpClient(); MediaType MIMEType= MediaType.parse("application/json; charset=utf-8"); RequestBody requestBody = RequestBody.create (MIMEType,"{}"); Request request = new Request.Builder().url(url).post(requestBody).build(); Response response = client.newCall(request).execute();
答案 11 :(得分：0)
如果您想在 okhttp 中发布参数作为正文内容，该内容可以是内容类型为“application/x-www-form-urlencoded”的加密字符串，您可以先使用 URLEncoder 对数据进行编码，然后使用：
final MediaType MEDIA_TYPE_MARKDOWN = MediaType.parse("application/x-www-form-urlencoded");
okhttp3.Request request = new okhttp3.Request.Builder()
.url(urlOfServer)
.post(RequestBody.create(MEDIA_TYPE_MARKDOWN, yourBodyDataToPostOnserver))
.build();
您可以根据需要添加标题。
答案 12 :(得分：-1)
OkHttp POST请求，标头中带有令牌
RequestBody requestBody = new MultipartBody.Builder()
.setType(MultipartBody.FORM)
.addFormDataPart("search", "a")
.addFormDataPart("model", "1")
.addFormDataPart("in", "1")
.addFormDataPart("id", "1")
.build();
OkHttpClient client = new OkHttpClient();
okhttp3.Request request = new okhttp3.Request.Builder()
.url("https://somedomain.com/api")
.post(requestBody)
.addHeader("token", "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiIkMnkkMTAkZzZrLkwySlFCZlBmN1RTb3g3bmNpTzltcVwvemRVN2JtVC42SXN0SFZtbzZHNlFNSkZRWWRlIiwic3ViIjo0NSwiaWF0IjoxNTUwODk4NDc0LCJleHAiOjE1NTM0OTA0NzR9.tefIaPzefLftE7q0yKI8O87XXATwowEUk_XkAOOQzfw")
.addHeader("cache-control", "no-cache")
.addHeader("Postman-Token", "7e231ef9-5236-40d1-a28f-e5986f936877")
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Call call, okhttp3.Response response) throws IOException {
if (response.isSuccessful()) {
final String myResponse = response.body().string();
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Log.d("response", myResponse);
progress.hide();
}
});
}
}
});
答案 13 :(得分：-3)
public static JSONObject doPostRequestWithSingleFile(String url,HashMap<String, String> data, File file,String fileParam) {
try {
final MediaType MEDIA_TYPE_PNG = MediaType.parse("image/png");
RequestBody requestBody;
MultipartBuilder mBuilder = new MultipartBuilder().type(MultipartBuilder.FORM);
for (String key : data.keySet()) {
String value = data.get(key);
Utility.printLog("Key Values", key + "-----------------" + value);
mBuilder.addFormDataPart(key, value);
}
if(file!=null) {
Log.e("File Name", file.getName() + "===========");
if (file.exists()) {
mBuilder.addFormDataPart(fileParam, file.getName(), RequestBody.create(MEDIA_TYPE_PNG, file));
}
}
requestBody = mBuilder.build();
Request request = new Request.Builder()
.url(url)
.post(requestBody)
.build();
OkHttpClient client = new OkHttpClient();
Response response = client.newCall(request).execute();
String result=response.body().string();
Utility.printLog("Response",result+"");
return new JSONObject(result);
} catch (UnknownHostException | UnsupportedEncodingException e) {
Log.e(TAG, "Error: " + e.getLocalizedMessage());
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
} catch (JSONException e1) {
e1.printStackTrace();
}
} catch (Exception e) {
Log.e(TAG, "Other Error: " + e.getMessage());
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
} catch (JSONException e1) {
e1.printStackTrace();
}
}
return null;
}
public static JSONObject doGetRequest(HashMap<String, String> param,String url) {
JSONObject result = null;
String response;
Set keys = param.keySet();
int count = 0;
for (Iterator i = keys.iterator(); i.hasNext(); ) {
count++;
String key = (String) i.next();
String value = (String) param.get(key);
if (count == param.size()) {
Log.e("Key",key+"");
Log.e("Value",value+"");
url += key + "=" + URLEncoder.encode(value);
} else {
Log.e("Key",key+"");
Log.e("Value",value+"");
url += key + "=" + URLEncoder.encode(value) + "&";
}
}
/*
try {
url= URLEncoder.encode(url, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}*/
Log.e("URL", url);
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(url)
.build();
Response responseClient = null;
try {
responseClient = client.newCall(request).execute();
response = responseClient.body().string();
result = new JSONObject(response);
Log.e("response", response+"==============");
} catch (Exception e) {
JSONObject jsonObject=new JSONObject();
try {
jsonObject.put("status","false");
jsonObject.put("message",e.getLocalizedMessage());
return jsonObject;
} catch (JSONException e1) {
e1.printStackTrace();
}
e.printStackTrace();
}
return result;
}