毕业设计-安卓Android图书馆占座app的设计与实现（Java）

package com.mobileclient.util; import java.io.ByteArrayOutputStream; import java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import java.net.URLEncoder; 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.ClientProtocolException; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import android.content.Intent; import android.net.Uri; import android.os.Environment; import com.mobileclient.activity.photoListActivity; import com.mobileclient.app.Declare; public class HttpUtil { // 基础URL public static final String BASE_URL = "http://192.168.1.103:8080/JavaWebProject/"; public static final String FILE_PATH = Environment.getExternalStorageDirectory().getAbsolutePath() + "/mobileclient"; public static final String Cach_Dir = Declare.context.getCacheDir().getAbsolutePath(); // 获得Get请求对象request public static HttpGet getHttpGet(String url) { HttpGet request = new HttpGet(url); return request; } // 获得Post请求对象request public static HttpPost getHttpPost(String url) { HttpPost request = new HttpPost(url); return request; } // 根据请求获得响应对象response public static HttpResponse getHttpResponse(HttpGet request) throws ClientProtocolException, IOException { HttpResponse response = new DefaultHttpClient().execute(request); return response; } // 根据请求获得响应对象response public static HttpResponse getHttpResponse(HttpPost request) throws ClientProtocolException, IOException { HttpResponse response = new DefaultHttpClient().execute(request); return response; } // 发送Post请求，获得响应查询结果 public static String queryStringForPost(String url) { // 根据url获得HttpPost对象 HttpPost request = HttpUtil.getHttpPost(url); String result = null; try { // 获得响应对象 HttpResponse response = HttpUtil.getHttpResponse(request); // 判断是否请求成功 if (response.getStatusLine().getStatusCode() == 200) { // 获得响应 result = EntityUtils.toString(response.getEntity()); return result; } } catch (ClientProtocolException e) { e.printStackTrace(); result = "网络异常！"; return result; } catch (IOException e) { e.printStackTrace(); result = "网络异常！"; return result; } return null; } // 获得响应查询结果 public static String queryStringForPost(HttpPost request) { String result = null; try { // 获得响应对象 HttpResponse response = HttpUtil.getHttpResponse(request); // 判断是否请求成功 if (response.getStatusLine().getStatusCode() == 200) { // 获得响应 result = EntityUtils.toString(response.getEntity()); return result; } } catch (ClientProtocolException e) { e.printStackTrace(); result = "网络异常！"; return result; } catch (IOException e) { e.printStackTrace(); result = "网络异常！"; return result; } return null; } // 发送Get请求，获得响应查询结果 public static String queryStringForGet(String url) { // 获得HttpGet对象 HttpGet request = HttpUtil.getHttpGet(url); String result = null; try { // 获得响应对象 HttpResponse response = HttpUtil.getHttpResponse(request); // 判断是否请求成功 if (response.getStatusLine().getStatusCode() == 200) { // 获得响应 result = EntityUtils.toString(response.getEntity()); return result; } } catch (ClientProtocolException e) { e.printStackTrace(); result = "网络异常！"; return result; } catch (IOException e) { e.printStackTrace(); result = "网络异常！"; return result; } return null; } public static boolean sendXML(String path, String xml) throws Exception { byte[] data = xml.getBytes(); URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setConnectTimeout(5 * 1000); conn.setDoOutput(true);// 如果通过post提交数据，必须设置允许对外输出数据 conn.setRequestProperty("Content-Type", "text/xml; charset=UTF-8"); conn.setRequestProperty("Content-Length", String.valueOf(data.length)); OutputStream outStream = conn.getOutputStream(); outStream.write(data); outStream.flush(); outStream.close(); if (conn.getResponseCode() == 200) { return true; } return false; } public static byte[] sendGetRequest(String path, Map<String, String> params, String enc) throws Exception { StringBuilder sb = new StringBuilder(path); sb.append('?'); // ?method=save&title=435435435&timelength=89& for (Map.Entry<String, String> entry : params.entrySet()) { sb.append(entry.getKey()).append('=') .append(URLEncoder.encode(entry.getValue(), enc)) .append('&'); } sb.deleteCharAt(sb.length() - 1); URL url = new URL(sb.toString()); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setConnectTimeout(5 * 1000); if (conn.getResponseCode() == 200) { return readStream(conn.getInputStream()); } return null; } public static boolean sendPostRequest(String path, Map<String, String> params, String enc) throws Exception { // title=dsfdsf&timelength=23&method=save StringBuilder sb = new StringBuilder(); if (params != null && !params.isEmpty()) { for (Map.Entry<String, String> entry : params.entrySet()) { sb.append(entry.getKey()).append('=') .append(URLEncoder.encode(entry.getValue(), enc)) .append('&'); } sb.deleteCharAt(sb.length() - 1); } byte[] entitydata = sb.toString().getBytes();// 得到实体的二进制数据 URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setConnectTimeout(5 * 1000); conn.setDoOutput(true);// 如果通过post提交数据，必须设置允许对外输出数据 // Content-Type: application/x-www-form-urlencoded // Content-Length: 38 conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); conn.setRequestProperty("Content-Length", String.valueOf(entitydata.length)); OutputStream outStream = conn.getOutputStream(); outStream.write(entitydata); outStream.flush(); outStream.close(); if (conn.getResponseCode() == 200) { return true; } return false; } public static byte[] SendPostRequest(String path, Map<String, String> params, String enc) throws Exception { // title=dsfdsf&timelength=23&method=save StringBuilder sb = new StringBuilder(); if (params != null && !params.isEmpty()) { for (Map.Entry<String, String> entry : params.entrySet()) { sb.append(entry.getKey()).append('=') .append(URLEncoder.encode(entry.getValue(), enc)) .append('&'); } sb.deleteCharAt(sb.length() - 1); } byte[] entitydata = sb.toString().getBytes();// 得到实体的二进制数据 URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setConnectTimeout(5 * 1000); conn.setDoOutput(true);// 如果通过post提交数据，必须设置允许对外输�