模拟Http请求及访问网络和SDCard的权限设置

心已赠人 2024-02-17 22:15 27阅读 0赞

## 1 在manifest.xml文件中，application标签前添加： ##

<uses-permission android:name="android.permission.INTERNET"/>
     
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
      
    <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 block
    			e.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 block
    			e.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 block
    			e.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 block
    			e.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 block
    			e.printStackTrace();
    		}
    		Log.i(TAG, "##"+response);
    	}