在http請求訪問接口的時候，用過一些別人封裝好的類，但是用來用去，總是不習慣，而且有時候出問題了，還要去找原因，總之各種麻煩，於是我就根據自己實際項目的需求，寫了一些我認為算是比較實用的類。
package com.jiayu.trafficlight.http;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
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.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import com.jiayu.trafficlight.util.Config;
import com.jiayu.trafficlight.util.UploadUtil;
public class NetConnection {
/**
* 升級版接口
*
* @param url
* @param method
* @param successCallback
* @param failCallback
* @param map
*/
public NetConnection(final String url, final HttpMethod method,
final SuccessCallback successCallback,
final FailCallback failCallback, final Map<String, String> map) {
new AsyncTask<Void, Void, String>() {
@Override
protected String doInBackground(Void... params) {
StringBuffer sb = new StringBuffer();
String realString = "";
for (Map.Entry<String, String> 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(),
Config.CHARSET));
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(),
Config.CHARSET));
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型接口升級版
*
* @param url
* @param method
* @param successCallback
* @param failCallback
* @param map
*/
public NetConnection(final String url,
final SuccessCallback successCallback,
final FailCallback failCallback, final String json) {
new AsyncTask<Void, Void, String>() {
@Override
protected String doInBackground(Void... params) {
try {
HttpURLConnection uc = (HttpURLConnection) new URL(url)
.openConnection();
uc.setDoOutput(true);
uc.setRequestMethod("POST");
uc.setConnectTimeout(5000);
uc.setUseCaches(false);
uc.setRequestProperty("Content-Type", "application/json");
uc.setRequestProperty("Accept", "application/json");
BufferedWriter bw = new BufferedWriter(
new OutputStreamWriter(uc.getOutputStream(),
Config.CHARSET));
bw.write(json);
bw.flush();
System.out.println("Request url:" + uc.getURL());
System.out.println("Request date:" + json);
if (uc.getResponseCode() == 200) {
BufferedReader br = new BufferedReader(
new InputStreamReader(uc.getInputStream(),
Config.CHARSET));
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();
}
}
以上的類就是http訪問接口的類，以下就來舉些例子吧：
/**
* 積分商品列表
*/
private void initData(int flag) {
private String url = "http://192.168.1.11/xxx";
Map<String, String> params = new HashMap<String, String>();
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);
}
還有一種是json型的入參的：
/**
* 發起全車診斷 接口描述：該接口用於向 iOBD設備下發診斷指令
*/
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());
}
這個類其實是也是在參考高手的基礎上然后根據我開發項目的經驗歸納完善而來的，其實也算是經過了實際開發項目的考驗的，這個類可以直接拿來使用的。