封装OKHTTP3一般的get，post请求，和文件下载，图片和多文件的上传。
package com.example.okhttpdemo;
import android.os.Handler;
import android.os.Looper;
import com.google.gson.Gson;
import com.google.gson.internal.$Gson$Types;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.net.FileNameMap;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Cookie;
import okhttp3.CookieJar;
import okhttp3.FormBody;
import okhttp3.Headers;
import okhttp3.HttpUrl;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
/**
* @author sk
* @time 2018/7/16
* @description okHTTP 封装类
*/
public class OkHttpUtil {
private OkHttpClient okHttpClient;
private Handler handler;
private Gson gson;
private static OkHttpUtil mInstance;
private final HashMap<String, List<Cookie>> cookieStore = new HashMap<>();
private OkHttpUtil() {
//添加cookie
okHttpClient = new OkHttpClient.Builder().cookieJar(new CookieJar() {
@Override
public void saveFromResponse(HttpUrl url, List<Cookie> cookies) {
cookieStore.put(url.host(), cookies);
}
@Override
public List<Cookie> loadForRequest(HttpUrl url) {
List<Cookie> cookies = cookieStore.get(url.host());
return cookies != null ? cookies : new ArrayList<Cookie>();
}
}).build();
handler = new Handler(Looper.getMainLooper());
gson = new Gson();
}
/**
* 单例模式创建OkHttpUtil
*
* @return mInstance
*/
public static OkHttpUtil getInstance() {
if (mInstance == null) {
synchronized (OkHttpUtil.class) {
mInstance = new OkHttpUtil();
}
}
return mInstance;
}
/**
* get 同步请求
*
* @return response
*/
private Response _getDataSync(String url) {
Request request = new Request.Builder()
.get()//默认get,可省略
.url(url)
.build();
Response response = null;
try {
response = okHttpClient.newCall(request).execute();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
/**
* get 同步请求
*
* @return 字符串
*/
private String _getDataString(String url) throws IOException {
Response response = _getDataSync(url);
if (response.body() != null) {
return response.body().string();
}
return null;
}
/**
* get 异步请求
*/
private void _getDataAsync(String url, final ResultCallback callback) {
final Request request = new Request.Builder()
.url(url)
.build();
deliveryResult(callback, request);
}
/**
* post 同步请求
*
* @return response
*/
private Response _postDataSync(String url, Param... params) throws IOException {
Request request = buildPostRequest(url, params);
return okHttpClient.newCall(request).execute();
}
/**
* post 同步请求
*
* @return 字符串
*/
private String _postDataString(String url, Param... params) throws IOException {
Response response = _postDataSync(url, params);
return response.body().string();
}
/**
* post 异步请求
*/
private void _postDataAsync(String url, final ResultCallback callback, Param... params) {
Request request = buildPostRequest(url, params);
deliveryResult(callback, request);
}
/**
* post 异步请求
*/
private void _postDataAsync(String url, final ResultCallback callback, Map<String, String> params) {
Param[] paramsArr = map2Params(params);
Request request = buildPostRequest(url, paramsArr);
deliveryResult(callback, request);
}
/**
* post 同步文件上传
*/
private Response _postDataFileSync(String url, File[] files, String[] fileKeys, Param... params) throws IOException {
Request request = buildMultipartFormRequest(url, files, fileKeys, params);
return okHttpClient.newCall(request).execute();
}
private Response _postDataFileSync(String url, File file, String fileKey) throws IOException {
Request request = buildMultipartFormRequest(url, new File[]{file}, new String[]{fileKey}, null);
return okHttpClient.newCall(request).execute();
}
private Response _postDataFileSync(String url, File file, String fileKey, Param... params) throws IOException {
Request request = buildMultipartFormRequest(url, new File[]{file}, new String[]{fileKey}, params);
return okHttpClient.newCall(request).execute();
}
/**
* 异步基于post的多文件上传
*/
private void _postDataFileAsync(String url, final ResultCallback callback, File[] files, String[] fileKeys, Param... params) {
Request request = buildMultipartFormRequest(url, files, fileKeys, params);
deliveryResult(callback, request);
}
/**
* 异步基于post的文件上传，单文件不带参数上传
*
* @param url
* @param callback
* @param file
* @param fileKey
*/
private void _postDataFileAsync(String url, ResultCallback callback, File file, String fileKey) {
Request request = buildMultipartFormRequest(url, new File[]{file}, new String[]{fileKey}, null);
deliveryResult(callback, request);
}
/**
* 异步基于post的文件上传，单文件且携带其他form参数上传
*
* @param url 接口地址
* @param callback callback
* @param file file
* @param fileKey fileKey
* @param params params
*/
private void _postDataFileAsync(String url, ResultCallback callback, File file, String fileKey, Param... params) {
Request request = buildMultipartFormRequest(url, new File[]{file}, new String[]{fileKey}, params);
deliveryResult(callback, request);
}
/**
* 同步 post上传json对象
*
* @param url url;
* @param jsonStr json 字符串
* @return 字符串
* @throws IOException
*/
private String _postJsonDataSync(String url, String jsonStr) throws IOException {
String result = null;
MediaType JSON = MediaType.parse("text/html;charset=utf-8");
RequestBody requestBody = RequestBody.create(JSON, jsonStr);
Request request = new Request.Builder().url(url).post(requestBody).build();
Response response = okHttpClient.newCall(request).execute();
result = response.body().string();
return result;
}
/**
* 异步 post上传json对象
*
* @param url url
* @param jsonStr json数据字符串
* @param callback callback
*/
private void _postJsonDataAsync(String url, String jsonStr, final ResultCallback callback) {
MediaType JSON = MediaType.parse("text/html;charset=utf-8");
RequestBody requestBody = RequestBody.create(JSON, jsonStr);
Request request = new Request.Builder().url(url).post(requestBody).build();
deliveryResult(callback, request);
}
/**
* post 异步上传图片
*
* @param url url
* @param callback callback
* @param file file
* @param fileKey fileKey
* @param map map
*/
private void _upLoadImg(String url, final ResultCallback callback, File file, String fileKey, Map<String, String> map) {
Param[] params = map2Params(map);
getInstance()._postDataFileAsync(url, callback, file, fileKey, params);
}
/**
* 创建 MultipartFormRequest
*
* @param url 接口地址
* @param files files
* @param fileKeys file keys
* @param params params
* @return MultipartFormRequest
*/
private Request buildMultipartFormRequest(String url, File[] files,
String[] fileKeys, Param[] params) {
params = validateParam(params);
MultipartBody.Builder builder = new MultipartBody.Builder();
for (Param param : params) {
builder.addPart(Headers.of("Content-Disposition", "form-data; name=\"" + param.key + "\""),
RequestBody.create(null, param.value));
}
if (files != null) {
RequestBody fileBody;
for (int i = 0; i < files.length; i++) {
File file = files[i];
String fileName = file.getName();
fileBody = RequestBody.create(MediaType.parse(guessMimeType(fileName)), file);
//TODO 根据文件名设置contentType
builder.addPart(Headers.of("Content-Disposition",
"form-data; name=\"" + fileKeys[i] + "\"; filename=\"" + fileName + "\""),
fileBody);
}
}
RequestBody requestBody = builder.build();
return new Request.Builder()
.url(url)
.post(requestBody)
.build();
}
private Param[] validateParam(Param[] params) {
if (params == null)
return new Param[0];
else
return params;
}
private String guessMimeType(String path) {
FileNameMap fileNameMap = URLConnection.getFileNameMap();
String contentTypeFor = fileNameMap.getContentTypeFor(path);
if (contentTypeFor == null) {
contentTypeFor = "application/octet-stream";
}
return contentTypeFor;
}
/**
* 异步下载文件
*/
private void _downloadFileAsync(final String url, final String destFileDir,
final ResultCallback callback) {
final Request request = new Request.Builder().url(url).build();
final Call call = okHttpClient.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
sendFailedStringCallback(request, e, callback);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
InputStream is = null;
byte[] b = new byte[2048];
int len;
FileOutputStream fos = null;
try {
is = response.body().byteStream();
File file = new File(destFileDir, getFileName(url));
fos = new FileOutputStream(file);
while ((len = is.read(b)) != -1) {
fos.write(b, 0, len);
}
fos.flush();
// 如果下载文件成功，第一个参数为文件的绝对路径
sendSuccessResultCallback(file.getAbsolutePath(), callback);
} catch (Exception e) {
sendFailedStringCallback(response.request(), e, callback);
} finally {
if (is != null) {
is.close();
}
if (fos != null) {
fos.close();
}
}
}
});
}
private String getFileName(String path) {
int separatorIndex = path.lastIndexOf("/");
return (separatorIndex < 0) ? path : path.substring(separatorIndex + 1,
path.length());
}
/***************************************************************** 公共方法***************************************************/
/**
* get 同步请求
*
* @param url 接口地址
* @return response
*/
public static Response getDataSync(String url) {
return getInstance()._getDataSync(url);
}
/**
* get 同步请求
*
* @param url 接口地址
* @return 字符串
* @throws IOException
*/
public static String getDataString(String url) throws IOException {
return getInstance()._getDataString(url);
}
/**
* get 异步请求
*
* @param url 接口地址
*/
public static void getDataAsync(String url, final ResultCallback callback) {
getInstance()._getDataAsync(url, callback);
}
/**
* post 同步请求
*
* @param url url
* @param param param
* @return response
* @throws IOException
*/
public static Response postDataSync(String url, Param... param) throws IOException {
return getInstance()._postDataSync(url, param);
}
/**
* post 同步请求
*
* @param url url
* @param params param
* @return 字符串
* @throws IOException
*/
public static String postDataString(String url, Param... params) throws IOException {
return getInstance()._postDataString(url, params);
}
/**
* post 异步请求
*
* @param url url
* @param callback 异步回调
* @param params params
*/
public static void postDataAsync(String url, final ResultCallback callback, Param... params) {
getInstance()._postDataAsync(url, callback, params);
}
/**
* post map集合 异步请求
*
* @param url url
* @param callback callback
* @param params params
*/
public static void postDataAsync(String url, final ResultCallback callback, Map<String, String> params) {
getInstance()._postDataAsync(url, callback, params);
}
/**
* post 异步上传图片
*
* @param url url
* @param callback callback
* @param file file
* @param fileKey fileKey
* @param map map
*/
public static void upLoadImg(String url, final ResultCallback callback, File file, String fileKey, Map<String, String> map) {
getInstance()._upLoadImg(url, callback, file, fileKey, map);
}
/**
* map 转换为 Param
*
* @param params map
* @return params
*/
private Param[] map2Params(Map<String, String> params) {
if (params == null) {
return new Param[0];
}
int size = params.size();
Param[] res = new Param[size];
Set<Map.Entry<String, String>> entries = params.entrySet();
int i = 0;
for (Map.Entry<String, String> entry : entries) {
res[i++] = new Param(entry.getKey(), entry.getValue());
}
return res;
}
/**
* 创建 PostRequest
*
* @param url url
* @param params params
* @return request
*/
private Request buildPostRequest(String url, Param[] params) {
if (params == null) {
params = new Param[0];
}
FormBody.Builder builder = new FormBody.Builder();
for (Param param : params) {
builder.add(param.key, param.value);
}
RequestBody requestBody = builder.build();
return new Request.Builder()
.url(url)
.post(requestBody)
.build();
}
/**
* 抽象类，用于请求成功后的回调
*
* @param <T>
*/
public static abstract class ResultCallback<T> {
//这是请求数据的返回类型，包含常见的（Bean，List等）
Type mType;
public ResultCallback() {
mType = getSuperclassTypeParameter(getClass());
}
/**
* 通过反射想要的返回类型
*
* @param subclass
* @return
*/
static Type getSuperclassTypeParameter(Class<?> subclass) {
Type superclass = subclass.getGenericSuperclass();
if (superclass instanceof Class) {
throw new RuntimeException("Missing type parameter.");
}
ParameterizedType parameterized = (ParameterizedType) superclass;
return $Gson$Types.canonicalize(parameterized.getActualTypeArguments()[0]);
}
//失败回调
public abstract void onError(Request request, Exception e);
//成功的回调
public abstract void onResponse(T response);
}
private Map<String, String> mSessions = new HashMap<>();
/**
* 请求回调处理方法并传递返回值
*
* @param callback Map类型请求参数
* @param request Request请求
*/
private void deliveryResult(final ResultCallback callback, final Request request) {
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
sendFailedStringCallback(request, e, callback);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
try {
final String string = response.body().string();
if (callback.mType == String.class) {
sendSuccessResultCallback(string, callback);
} else {
Object o = gson.fromJson(string, callback.mType);
sendSuccessResultCallback(o, callback);
}
} catch (IOException e) {
sendFailedStringCallback(response.request(), e, callback);
} catch (com.google.gson.JsonParseException e)//Json解析的错误
{
sendFailedStringCallback(response.request(), e, callback);
}
}
});
}
/**
* 处理请求失败的回调信息方法
*
* @param e 错误信息
* @param callback 回调类
*/
private void sendFailedStringCallback(final Request request, final Exception e, final ResultCallback callback) {
handler.post(new Runnable() {
@Override
public void run() {
if (callback != null)
callback.onError(request, e);
}
});
}
/**
* 处理请求成功的回调信息方法
*
* @param object 服务器响应信息
* @param callback 回调类
*/
private void sendSuccessResultCallback(final Object object, final ResultCallback callback) {
handler.post(new Runnable() {
@Override
public void run() {
if (callback != null) {
callback.onResponse(object);
}
}
});
}
public static class Param {
public Param() {
}
public Param(String key, String value) {
this.key = key;
this.value = value;
}
String key;
String value;
}
}
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