android http请求访问接口的封装

转自 https://www.cnblogs.com/you411305469/p/5212479.html

里面介绍了实用的两种

要特别注意，向php请求数据是表单类型的数据
application/x-www-form-urlencoded

import android.os.AsyncTask;import org.json.JSONObject;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection;import java.util.Map;/** * @author Admin * @version $Rev$ * @des ${TODO} * @updateAuthor $Author$ * @updateDes ${TODO} */public class HttpConnection {    /**     * 升级版接口     *     * @param url     * @param method     * @param successCallback     * @param failCallback     * @param map     */    public HttpConnection(final String url, final HttpMethod method,                         final SuccessCallback successCallback,                         final FailCallback failCallback, final Map map) {        new AsyncTask() {            @Override            protected String doInBackground(Void... params) {                StringBuffer sb = new StringBuffer();                String realString = "";                for (Map.Entry entry : map.entrySet()) {                    sb.append(entry.getKey()).append("=")                            .append(entry.getValue()).append("&");                }                realString = sb.toString().substring(0,                        sb.toString().length() - 1);                try {                    URLConnection uc;                    switch (method) {                        case POST:                            uc = new URL(url).openConnection();                            uc.setDoOutput(true);                            uc.setConnectTimeout(5000);                            BufferedWriter bw = new BufferedWriter(                                    new OutputStreamWriter(uc.getOutputStream(),                                            "utf-8"));                            bw.write(realString);                            bw.flush();                            break;                        default:                            uc = new URL(url + "?" + realString).openConnection();                            uc.setConnectTimeout(5000);                            uc.setRequestProperty("apikey",                                    "2f50fafc573e93a725e277b073d9c5dd");                            break;                    }                    System.out.println("Request url:" + uc.getURL());                    System.out.println("Request date:" + realString);                    System.out.println("Result status:"                            + ((HttpURLConnection) uc).getResponseCode());                    if (((HttpURLConnection) uc).getResponseCode() == 200) {                        BufferedReader br = new BufferedReader(                                new InputStreamReader(uc.getInputStream(),                                        "utf-8"));                        StringBuffer result = new StringBuffer();                        String line = "";                        while ((line = br.readLine()) != null) {                            result.append(line);                        }                        System.out.println("Result:" + result);                        return result.toString();                    } else {                        System.out.println("Result:"                                + ((HttpURLConnection) uc).getResponseCode());                    }                } catch (MalformedURLException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                }                return null;            }            @Override            protected void onPostExecute(String result) {                if (result != null) {                    try {                        JSONObject json = new JSONObject(result);                        if (successCallback != null) {                            successCallback.onSuccess(result);                        }                    } catch (Exception e) {                        e.printStackTrace();                    }                } else {                    if (failCallback != null) {                        failCallback.onFail();                    }                }                super.onPostExecute(result);            }        }.execute();    }    /**     * json型接口升级版     *     * @param url     * @param successCallback     * @param failCallback     * @param json map     */    public HttpConnection(final String url,                         final SuccessCallback successCallback,                         final FailCallback failCallback, final String json) {        new AsyncTask() {            @Override            protected String doInBackground(Void... params) {                try {                    HttpURLConnection uc = (HttpURLConnection) new URL(url)                            .openConnection();                    //打开输出流                    uc.setDoOutput(true);                    //打开输入流                    uc.setDoInput(true);                    uc.setInstanceFollowRedirects(true);                    //post方式                    uc.setRequestMethod("POST");                    //超时                    uc.setConnectTimeout(5000);                    //禁止使用缓存                    uc.setUseCaches(false);                    //接收字符串类型数据用json                    uc.setRequestProperty("Accept", "application/json");                    //请求的内容为表单类型数据                    uc.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");                    //设置utf8                    uc.setRequestProperty("Charset", "UTF-8");//                    BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(uc.getOutputStream(),"utf-8"));//                    bw.write(json);//                    bw.flush();                    /**                     * 请求数据（表单类型的或json类型的数据）                     */                    OutputStreamWriter writer = new OutputStreamWriter(uc.getOutputStream());                    //发送参数                    writer.write(json);                    //清理当前编辑器的左右缓冲区，并使缓冲区数据写入基础流                    writer.flush();                    System.out.println("Request url:" + uc.getURL());                    System.out.println("Request date:" + json);                    //判断接收数据，为json格式                    if (uc.getResponseCode() == 200) {                        BufferedReader br = new BufferedReader(                                new InputStreamReader(uc.getInputStream(),                                        "utf-8"));                        StringBuffer result = new StringBuffer();                        String line = "";                        while ((line = br.readLine()) != null) {                            result.append(line);                        }                        System.out.println("Result:" + result);                        return result.toString();                    } else {                        System.out.println("uc.getResponseCode()=="                                + uc.getResponseCode());                        System.out.println("uc.getResponseMessage()=="                                + uc.getResponseMessage());                    }                } catch (MalformedURLException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                }                return null;            }            @Override            protected void onPostExecute(String result) {                if (result != null) {                    if (successCallback != null) {                        successCallback.onSuccess(result);                    }                } else {                    if (failCallback != null) {                        failCallback.onFail();                    }                }                super.onPostExecute(result);            }        }.execute();    }    public static interface SuccessCallback {        void onSuccess(String result);    }    public static interface FailCallback {        void onFail();    }}

以上类需要用到HttpMethod

public enum HttpMethod {    POST,GET}

以上的类就是http访问接口的类，以下就来举些例子吧：

/**     * 积分商品列表     */    private void initData(int flag) {        private String url = "http://192.168.1.11/xxx";        Map params = new HashMap();        params.put("types", "0");        params.put("isonsail", "0");        params.put("rowStart",  "0");        params.put("rowEnd",  "20");        new NetConnection(url, "post",                new NetConnection.SuccessCallback() {                     @Override                    public void onSuccess(String result) {                                             }                }, new NetConnection.FailCallback() {                     @Override                    public void onFail() {                                             }                }, params);    }

还有一种是json型的入参的：

/**     * 发起全车诊断 接口描述：该接口用于向 iOBD设备下发诊断指令     */    public void check() {        JSONObject param = new JSONObject();        try {            param.put("appkey", Config.getAppKey(this));            param.put("imei", Config.getImei(this));        } catch (Exception e) {            e.printStackTrace();        }        new NetConnection(Config.SERVER_URL + "diagnosis/trigge",                new NetConnection.SuccessCallback() {                    @Override                    public void onSuccess(String result) {                                             }                }, new NetConnection.FailCallback() {                    @Override                    public void onFail() {                                             }                }, param.toString());    }

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