Android（7）模拟Http请求及访问网络和SDCard的权限设置

1  在manifest.xml文件中，application标签前添加：

<uses-permission android:name="android.permission.INTERNET"/><!-- 向SDCard写入数据权限 --> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><!-- SDCard中创建与删除文件权限 -->  <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>  这一设置可以没有

2  示例

2.1 使用HttpURLConnection

BasicHttpClient.java

public class BasicHttpClient {private static final int TIME_OUT = 1000*6;private static final String METHOD_POST="POST";private static final String METHOD_GET="GET";private static final int HTTP_OK = 200;public String httpGet(String urlStr) {URL url = null;HttpURLConnection conn = null;InputStream inStream = null;String response = null;try {url = new URL(urlStr);conn = (HttpURLConnection) url.openConnection();conn.setDoInput(true);conn.setConnectTimeout(TIME_OUT);conn.setRequestMethod(METHOD_GET);conn.setRequestProperty("accept", "*/*");conn.connect();int responseCode = conn.getResponseCode();if(responseCode == HTTP_OK) {inStream = conn.getInputStream();response = getResponse(inStream);} else {response = "返回码:"+responseCode;}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {conn.disconnect();}return response;}public String httpPost(String urlStr, String params) {byte[] data = params.getBytes();URL url = null;HttpURLConnection conn = null;InputStream inStream = null;String response = null;try {url = new URL(urlStr);conn = (HttpURLConnection) url.openConnection();conn.setDoOutput(true);conn.setDoInput(true);conn.setUseCaches(false);conn.setConnectTimeout(TIME_OUT);conn.setRequestMethod(METHOD_POST);conn.setRequestProperty("Connection", "Keep-Alive");conn.setRequestProperty("Charset", "UTF-8");conn.setRequestProperty("Content-Length", String.valueOf(data.length));conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");conn.connect();DataOutputStream outputStream = new DataOutputStream(conn.getOutputStream());outputStream.write(data);outputStream.flush();outputStream.close();int responseCode = conn.getResponseCode();if(responseCode == HTTP_OK) {inStream = conn.getInputStream();response = getResponse(inStream);} else {response = "返回码:"+responseCode;}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {conn.disconnect();}return response;}private String getResponse(InputStream inStream) throws Exception {ByteArrayOutputStream outputStream = new ByteArrayOutputStream();int len = -1;byte[] buffer = new byte[1024];while((len=inStream.read(buffer))!=-1) {outputStream.write(buffer, 0, len);}byte[] data = outputStream.toByteArray();return new String(data);}}

BasicHttpClientTest.java

public class BasicHttpClientTest extends AndroidTestCase {private static final String TAG = "BasicHttpClientTest";String urlStr = "http://192.168.1.107:8080/test/test.txt";String params = "id=1&name=jiao";public void testHttpGet() {BasicHttpClient client = new BasicHttpClient();String response = client.httpGet(urlStr+"?"+params);Log.i(TAG, response);}public void testHttpPost() {BasicHttpClient client = new BasicHttpClient();String response = client.httpPost(urlStr, params);Log.i(TAG, response);}}

2.2 使用Apache提供的HttpClient

ApacheHttpClient.java

public class ApacheHttpClient {public String httpGet(String urlStr) {String response = null;HttpClient httpclient = new DefaultHttpClient();HttpGet httpGet = new HttpGet(urlStr);HttpResponse httpResponse;try {httpResponse = httpclient.execute(httpGet);int responseCode = httpResponse.getStatusLine().getStatusCode();if (responseCode == HttpStatus.SC_OK) {response = EntityUtils.toString(httpResponse.getEntity());} else {response = "返回码:" + responseCode;}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return response;}public String httpPost(String urlStr, List<NameValuePair> params) throws Exception {String response = null;HttpClient httpClient = new DefaultHttpClient();HttpPost httppost = new HttpPost(urlStr);try {httppost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));HttpResponse httpResponse = httpClient.execute(httppost);int responseCode = httpResponse.getStatusLine().getStatusCode();if (responseCode == HttpStatus.SC_OK) {response = EntityUtils.toString(httpResponse.getEntity());} else {response = "返回码:" + responseCode;}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}return response;}}

测试代码：

public void testHttpPost() {ApacheHttpClient client = new ApacheHttpClient();List<NameValuePair> params = new ArrayList<NameValuePair>();params.add(new BasicNameValuePair("id", "1"));params.add(new BasicNameValuePair("name", "jiao"));String response = null;try {response = client.httpPost(urlStr, params);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}Log.i(TAG, "##"+response);}