android实用代码

今天晚上写了测试类，虽然说达不到什么效果。但是能给大家一些实用的代码。

让我看看代码的：

package com.smart.net.utils;import java.io.ByteArrayOutputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import java.net.URLEncoder;import java.util.Map;public class NetTool {/** * byte[] data=param.getBytes(); 以后要注意，发送数据接收数据，都要用字节数组去接收它 *  *  * Content-Type 指action entype="multipart/x-" * */public static InputStream sendPostRequest(String uriPath,Map<String, String> params, String encoding) throws Exception {// String param="id=67&name"+URLEncoder.encode("老梁","UTF-8");//要发送的数据StringBuilder sb = new StringBuilder();// 进行封装for (Map.Entry<String, String> entry : params.entrySet()) {sb.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), encoding));sb.append('&');}sb.deleteCharAt(sb.length() - 1);byte[] data = sb.toString().getBytes();URL url = new URL(uriPath);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setConnectTimeout(6 * 1000);conn.setDoOutput(true);// 发送POST至服务器conn.setUseCaches(false);conn.setRequestMethod("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");DataOutputStream dataOutStream = new DataOutputStream(conn.getOutputStream());// 得到输出流dataOutStream.write(data);dataOutStream.flush();dataOutStream.close();System.out.println(conn.getResponseCode());if (conn.getResponseCode() == 200) {return conn.getInputStream();}return null;}/** *  *  * */public static String getTextContent(InputStream inStream,String encoding) throws Exception {byte[] data=readStream(inStream);return new String(data,encoding);}/** * 获取URL路径指定的内容 *  *  * 获得指定内容 * */public static String getTextContent2(String path,String encoding) throws Exception {URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(6 * 1000);// 别超过10秒。System.out.println(conn.getResponseCode());if(conn.getResponseCode()==200){InputStream inputStream=conn.getInputStream();byte[] data=readStream(inputStream);return new String(data,encoding);}return null;}/** * 直接可以得到文本与流的数据 * */public static InputStream getContent(String uriPath) throws Exception {URL url = new URL(uriPath);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(6 * 1000);// 别超过10秒。System.out.println(conn.getResponseCode());if(conn.getResponseCode()==200){return conn.getInputStream();}return null;}///**// * 直接可以得到文本与流的数据// * */public static InputStream getContentImputStream(String path,String encoding) throws Exception {URL url = new URL(path);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(6 * 1000);// 别超过10秒。System.out.println(conn.getResponseCode());if(conn.getResponseCode()==200){return conn.getInputStream();}return null;}/** * 获取指定路径，的数据。 *  * **/public static byte[] getImage(String urlpath) throws Exception {URL url = new URL(urlpath);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");conn.setConnectTimeout(6 * 1000);// 别超过10秒。if(conn.getResponseCode()==200){InputStream inputStream=conn.getInputStream();return readStream(inputStream);}return null;}/** * 读取数据  * 输入流 *  * */public static byte[] readStream(InputStream inStream) throws Exception {ByteArrayOutputStream outstream=new ByteArrayOutputStream();byte[] buffer=new byte[1024];int len=-1;while((len=inStream.read(buffer)) !=-1){outstream.write(buffer, 0, len);}outstream.close();inStream.close();return outstream.toByteArray();}}package com.smart.activity;import java.io.File;import java.io.FileInputStream;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;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 android.test.AndroidTestCase;import android.util.Log;import com.smart.net.utils.FormFile;import com.smart.net.utils.HttpRequester;import com.smart.net.utils.NetTool;/** * 如何使用大数据发送 * */public class PostParamTest extends AndroidTestCase {/*** * 本代码报错，原因为数据类型不对，18 向Internet上传文件-1.avi  38：38分 *  *  * */private final String TAG = "PostParamTest";/*** * 上专文件， * 要有四部份数据 * 名称 * 内容类型 * 表单字段名称 * 类型 * 发送文件及文本请求参数 *  * 面试上专100M * 文件读成数组，然后写上传上去 *上传到网络流里面去，  * *///发送文件及文本请求参数public void testSendPostFileparams() throws Exception{Map<String,String> params=new HashMap<String,String>();params.put("method", "save");params.put("id", "988");params.put("name", "老梁");FileInputStream inStream=new FileInputStream(new File("/sdcard/smart.xml"));//byte[] data=NetTool.readStream(inStream);//inStream.close();FormFile file=new FormFile("smart.xml",inStream,"file","test/xml");//这行代码出现报错//HttpRequester.post("www.baidu.com",params,file);//HttpRequester.post("", params, null);}/** * 利用 * （资源包）httpcomponents-asyncclient-4.0根据包下面的内容显示， * pairms.add(new BasicNameValuePair("id", "988"));//服务器端pairms.add(new BasicNameValuePair("name", "老梁"));pairms.add(new BasicNameValuePair("method", "save")); * 两种做方法 * *///通过HhttpClien发送Post请求public void testSendPostParamFromHttpClient() throws Exception {HttpPost httpPost = new HttpPost("");//请求参数，指服务器地址。List<NameValuePair> pairms = new ArrayList<NameValuePair>();//参娄pairms.add(new BasicNameValuePair("id", "988"));//服务器端pairms.add(new BasicNameValuePair("name", "老梁"));pairms.add(new BasicNameValuePair("method", "save"));//代表数据部分httpPost.setEntity(new UrlEncodedFormEntity(pairms, HTTP.UTF_8));DefaultHttpClient httpclient = new DefaultHttpClient();HttpResponse response = httpclient.execute(httpPost);response.getEntity().getContent();// Log.i(TAG, result);}// 读取服务器信息//自定义发送Post请求public void testSendPostParam() throws Exception {// 这里放的服务器地址，我们可以把JAVA写的项目眼布起来，一样都可以使用。String path = "http:www.baidu.com";Map<String, String> params = new HashMap<String, String>();params.put("methos", "save");params.put("id", "29832");params.put("name", "老梁");String result = NetTool.getTextContent(NetTool.sendPostRequest(path,params,"UTF-8"), "UTF-8");Log.i(TAG, result);}}package com.smart.activity;import java.io.ByteArrayInputStream;import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStreamWriter;import android.os.Environment;import android.test.AndroidTestCase;import android.util.Log;import com.smart.domain.Resource;import com.smart.net.utils.NetTool;import com.smart.net.utils.SAXResourceService;public class GetXMLTest extends AndroidTestCase {private static final String TAG = "GetXMLTest";public void testGetXML() throws Exception {// 如果参数是中文，必须进行Url编码String path = "http://211.143.108.6/wap/ResCatService?act=pic&s=h";//String xml = NetTool.getTextContent(NetTool.getContent(path), "UTF-8");String xml = NetTool.getTextContent2(path, "UTF-8");FileOutputStream outStream=new FileOutputStream(new File(Environment.getExternalStorageDirectory(),"test.xml"));OutputStreamWriter writer=new OutputStreamWriter(outStream,"UTF-8");writer.write(xml);writer.flush();//一定写进这个方法，要不然，写到内容里面就会没有写入文本outStream.close();//Log.i(TAG, xml);}//这种性能会差一点public void testGetXMLAndParser() throws Exception {// 如果参数是中文，必须进行URI编码String path = "http://211.143.108.6/wap/ResCatService?act=pic&s=h";String xml = NetTool.getTextContent(NetTool.getContent(path), "UTF-8");InputStream inStream=new ByteArrayInputStream(xml.getBytes());Resource resource=SAXResourceService.readXml(inStream);Log.i(TAG, resource.toString());//打印出来XML文件的资源}/** *  *  * *///public void testGetXMLAndParset() throws Exception{//String path="";//String xml=Net//}//这种调用方法效果相对来讲会好一点public void testGetXMLAndParser2() throws Exception {// 如果参数是中文，必须进行URI编码String path = "http://211.143.108.6/wap/ResCatService?act=pic&s=h";InputStream inStream = NetTool.getContent(path);////InputStream inStream=new ByteArrayInputStream(xml.getBytes());if(inStream!=null){Resource resource=SAXResourceService.readXml(inStream);Log.i(TAG, resource.toString());//打印出来XML文件的资源}else{Log.i(TAG, "----------->ERROR");}}}
标签: android实用代码

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