okhttp常用工具类

在网络请求中常用的框架有

okhttp

android-async-http

volley

retrofit

这里介绍一下okhttp的使用

compile 'com.squareup.okhttp:okhttp:2.5.0'

package test.org.util;import android.text.TextUtils;import com.squareup.okhttp.Callback;import com.squareup.okhttp.FormEncodingBuilder;import com.squareup.okhttp.MediaType;import com.squareup.okhttp.OkHttpClient;import com.squareup.okhttp.Request;import com.squareup.okhttp.RequestBody;import com.squareup.okhttp.Response;import org.apache.http.client.utils.URLEncodedUtils;import org.apache.http.message.BasicNameValuePair;import java.io.IOException;import java.net.URLEncoder;import java.util.List;import java.util.Map;import java.util.concurrent.TimeUnit;public class OkHttpUtil {    private static final String CHARSET_NAME = "UTF-8";    public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");    private static final OkHttpClient okHttpClient = new OkHttpClient();    static {        okHttpClient.setConnectTimeout(10, TimeUnit.SECONDS);    }    /**     * 同步get     *     * @param url     * @return     * @throws Exception     */    public static String get(String url) throws Exception {        Request request = new Request.Builder().url(url).build();        Response response = execute(request);        if (response.isSuccessful()) {            return response.body().string();        } else {            throw new IOException("Unexpected code " + response);        }    }    /**     * 同步get请求     *     * @param url     * @param data     * @return     * @throws Exception     */    public static String get(String url, Map<String, String> data) throws Exception {        url = getRequestUrl(url, data);        Request request = new Request.Builder().url(url).build();        Response response = execute(request);        if (response.isSuccessful()) {            return response.body().string();        } else {            throw new IOException("Unexpected code " + response);        }    }    /**     * 异步get请求     *     * @param url     * @param responseCallback     * @return     * @throws Exception     */    public static void get(String url, Callback responseCallback) throws Exception {        Request request = new Request.Builder().url(url).build();        enqueue(request, responseCallback);    }    /**     * 异步get     *     * @param url     * @param data     * @param responseCallback     * @return     * @throws Exception     */    public static void get(String url, Map<String, String> data, Callback responseCallback) throws Exception {        url = getRequestUrl(url, data);        Request request = new Request.Builder().url(url).build();        enqueue(request, responseCallback);    }    /**     * 同步post json数据     *     * @param url     * @param json     * @return     * @throws IOException     */    public static String post(String url, String json) throws IOException {        RequestBody body = RequestBody.create(JSON, json);        Request request = new Request.Builder().url(url).post(body).build();        Response response = execute(request);        if (response.isSuccessful()) {            return response.body().string();        } else {            throw new IOException("Unexpected code " + response);        }    }    /**     * 同步post 键值对数据     *     * @param url     * @param data     * @return     * @throws IOException     */    public static String post(String url, Map<String, String> data) throws IOException {        FormEncodingBuilder formBuilder = new FormEncodingBuilder();        for (Map.Entry<String, String> item : data.entrySet()) {            formBuilder.add(item.getKey(), item.getValue());        }        RequestBody body = formBuilder.build();        Request request = new Request.Builder().url(url).post(body).build();        Response response = execute(request);        if (response.isSuccessful()) {            return response.body().string();        } else {            throw new IOException("Unexpected code " + response);        }    }    /**     * 异步post json     *     * @param url     * @param json     * @param responseCallback     * @throws IOException     */    public static void post(String url, String json, Callback responseCallback) throws IOException {        RequestBody body = RequestBody.create(JSON, json);        Request request = new Request.Builder().url(url).post(body).build();        enqueue(request, responseCallback);    }    /**     * 异步post key-value     *     * @param url     * @param data     * @param responseCallback     * @throws IOException     */    public static void post(String url, Map<String, String> data, Callback responseCallback) throws IOException {        FormEncodingBuilder formBuilder = new FormEncodingBuilder();        for (Map.Entry<String, String> item : data.entrySet()) {            formBuilder.add(item.getKey(), item.getValue());        }        RequestBody body = formBuilder.build();        Request request = new Request.Builder().url(url).post(body).build();        enqueue(request, responseCallback);    }    /**     * 同步put     *     * @param url     * @param json     * @return     * @throws IOException     */    public static String put(String url, String json) throws IOException {        RequestBody body = RequestBody.create(JSON, json);        Request request = new Request.Builder().url(url).put(body).build();        Response response = execute(request);        if (response.isSuccessful()) {            return response.body().string();        } else {            throw new IOException("Unexpected code " + response);        }    }    /**     * 同步put key-value     *     * @param url     * @param data     * @return     * @throws IOException     */    public static String put(String url, Map<String, String> data) throws IOException {        FormEncodingBuilder formBuilder = new FormEncodingBuilder();        for (Map.Entry<String, String> item : data.entrySet()) {            formBuilder.add(item.getKey(), item.getValue());        }        RequestBody body = formBuilder.build();        Request request = new Request.Builder().url(url).put(body).build();        Response response = execute(request);        if (response.isSuccessful()) {            return response.body().string();        } else {            throw new IOException("Unexpected code " + response);        }    }    /**     * 异步put json     *     * @param url     * @param json     * @throws IOException     */    public static void put(String url, String json, Callback responseCallback) throws IOException {        RequestBody body = RequestBody.create(JSON, json);        Request request = new Request.Builder().url(url).put(body).build();        enqueue(request, responseCallback);    }    /**     * 异步put key-value     *     * @param url     * @param data     * @param responseCallback     * @throws IOException     */    public static void put(String url, Map<String, String> data, Callback responseCallback) throws IOException {        FormEncodingBuilder formBuilder = new FormEncodingBuilder();        for (Map.Entry<String, String> item : data.entrySet()) {            formBuilder.add(item.getKey(), item.getValue());        }        RequestBody body = formBuilder.build();        Request request = new Request.Builder().url(url).put(body).build();        enqueue(request, responseCallback);    }    /**     * 通用同步请求。     *     * @param request     * @return     * @throws IOException     */    public static Response execute(Request request) throws IOException {        return okHttpClient.newCall(request).execute();    }    /**     * 通用异步请求     *     * @param request     * @param responseCallback     */    public static void enqueue(Request request, Callback responseCallback) {        okHttpClient.newCall(request).enqueue(responseCallback);    }    /**     * 开启异步线程访问网络, 且不在意返回结果（实现空callback）     *     * @param request     */    public static void enqueue(Request request) {        okHttpClient.newCall(request).enqueue(new Callback() {            @Override            public void onResponse(Response arg0) throws IOException {                //            }            @Override            public void onFailure(Request arg0, IOException arg1) {                //            }        });    }    public static String getStringFromServer(String url) throws IOException {        Request request = new Request.Builder().url(url).build();        Response response = execute(request);        if (response.isSuccessful()) {            String responseUrl = response.body().string();            return responseUrl;        } else {            throw new IOException("Unexpected code " + response);        }    }    /**     * 这里使用了HttpClinet的API。只是为了方便     *     * @param params     * @return     */    public static String formatParams(List<BasicNameValuePair> params) {        return URLEncodedUtils.format(params, CHARSET_NAME);    }    /**     * 为HttpGet 的 url 方便的添加多个name value 参数。     *     * @param url     * @param params     * @return     */    public static String attachHttpGetParams(String url, List<BasicNameValuePair> params) {        return url + "?" + formatParams(params);    }    /**     * 为HttpGet 的 url 方便的添加1个name value 参数。     *     * @param url     * @param name     * @param value     * @return     */    public static String attachHttpGetParam(String url, String name, String value) {        return url + "?" + name + "=" + value;    }    /**     * get方式URL拼接     *     * @param url     * @param map     * @return     */    private static String getRequestUrl(String url, Map<String, String> map) {        if (map == null || map.size() == 0) {            return url;        } else {            StringBuilder newUrl = new StringBuilder(url);            if (url.indexOf("?") == -1) {                newUrl.append("?rd=" + Math.random());            }            for (Map.Entry<String, String> item : map.entrySet()) {                if (false == TextUtils.isEmpty(item.getKey().trim())) {                    try {                        newUrl.append("&" + item.getKey().trim() + "=" + URLEncoder.encode(String.valueOf(item.getValue().trim()), "UTF-8"));                    } catch (Exception e) {                        e.printStackTrace();                    }                }            }            return newUrl.toString();        }    }}

这个工具类很不错：

https://github.com/hongyangAndroid/okhttp-utils