在线视频网站/在线教学网站（毕业设计）

package com.local.uitls; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.math.BigDecimal; import java.net.HttpURLConnection; import java.net.InetAddress; import java.net.InetSocketAddress; import java.net.NetworkInterface; import java.net.Socket; import java.net.URL; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Calendar; import java.util.Collection; import java.util.Collections; import java.util.Date; import java.util.Enumeration; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Random; import java.util.UUID; import javax.servlet.http.HttpServletRequest; import net.sf.json.JSONObject; import org.apache.commons.lang3.StringUtils; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.ParseException; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.util.EntityUtils; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes; import com.alibaba.fastjson.JSON; import common.Logger; /** * 工具类 * * @ClassName: CommonUtils * @Description: TODO * @author Lan * @date 2015年9月7日 下午8:09:17 * */ public class CommonUtils extends BaseAction { private static Logger log=Logger.getLogger(CommonUtils.class); /** * Get百度接口请求 * @param url * @return * @throws ParseException * @throws IOException */ public static JSONObject doBetJson(String url) throws ParseException, IOException{ DefaultHttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(url); JSONObject jsonObject = null; HttpResponse httpResponse = client.execute(httpGet); HttpEntity entity = httpResponse.getEntity(); if(entity != null){ String result = EntityUtils.toString(entity,"UTF-8"); //处理百度接口返回值的外部括号 result=result.substring(result.indexOf("(")+1, result.length()-1); jsonObject = JSONObject.fromObject(result); } httpGet.releaseConnection(); return jsonObject; } /** * Get请求 * @param url * @return * @throws ParseException * @throws IOException */ public static JSONObject doGetJson(String url) throws ParseException, IOException{ DefaultHttpClient client = new DefaultHttpClient(); HttpGet httpGet = new HttpGet(url); JSONObject jsonObject = null; HttpResponse httpResponse = client.execute(httpGet); HttpEntity entity = httpResponse.getEntity(); if(entity != null){ String result = EntityUtils.toString(entity,"UTF-8"); jsonObject = JSONObject.fromObject(result); } httpGet.releaseConnection(); return jsonObject; } /** * POST请求 * @param url * @param outStr * @return * @throws ParseException * @throws IOException */ public static JSONObject doPostStr(String url,String outStr) throws ParseException, IOException{ DefaultHttpClient client = new DefaultHttpClient(); HttpPost httpost = new HttpPost(url); JSONObject jsonObject = null; httpost.setEntity(new StringEntity(outStr,"UTF-8")); HttpResponse response = client.execute(httpost); String result = EntityUtils.toString(response.getEntity(),"UTF-8"); jsonObject = JSONObject.fromObject(result); httpost.releaseConnection(); return jsonObject; } //json字符串发送 public void writeJson(Object object) { try { response.setCharacterEncoding("utf-8"); response.setContentType("text/html;charset=utf-8"); response.getWriter().print(JSON.toJSONString(object)); } catch (Exception e) { e.printStackTrace(); } } /** * 泛型方法，将javaBean转成Map集合 * @param t * @return */ public static <T> Map toMap(T t){ Map<String,Object> map=new HashMap<String, Object>(); //泛型对象转成Map方便操作特定属性 JSONObject json=new JSONObject(); json=json.fromObject(t); Iterator it = json.keys(); // 遍历jsonObject数据，//net.sf最初的JSON将NULL字符串转成“”；org.json/alibaba.fast.json将不会显示为NULL的字符串 while (it.hasNext()) { String key = String.valueOf(it.next()); map.put(key, isEmpty(String.valueOf(json.get(key)))?null:json.get(key)); } return map; } /** * 获取UUID替换里面的-字符 * * @return */ public final static String getUUID() { UUID uuid = UUID.randomUUID(); return uuid.toString().replaceAll("-", ""); } /** * 是否为数字 * @param str * @return */ public static boolean isNumeric(String str){ return StringUtils.isNumeric(str); } /** * 字符串是否为空 * @param str * @return */ public static boolean isEmpty(String str){ return str==null||str.trim().equalsIgnoreCase("null")||str.trim().length()==0; } /** * 判断一个字符串是否为double long 是否为数字 * @param str * @return */ public static boolean isNumber(String str){ try{ double db = Double.parseDouble(str); return true; }catch(NumberFormatException e){ return false; } } /** * 字符串加上UUID * * @param pre * 字符串类型参数 * @return */ public final static String getUUID(String pre) { return pre + getUUID(); } //枷锁时间戳生成ID public synchronized static String getKey() { //取当前时间的长整形值包含毫秒 long millis = System.currentTimeMillis(); //long millis = System.nanoTime(); //加上两位随机数 Random random = new Random(); int end2 = random.nextInt(99); //如果不足两位前面补0 String str = millis + String.format("%02d", end2); return str; } //得到"yyyy-MM-dd HH:mm:ss"格式的时间字符串 public String getTime(){ return Toolkits.Obtain_date(Toolkits.GENERAL_TIME); } /** * 判断数组是否为空 * @param s * 需判断的数组 * @return boolean * @author Guan */ @SuppressWarnings("rawtypes") public final static boolean isNull(Collection collection) { return collection == null || collection.isEmpty(); } @SuppressWarnings("rawtypes") public final static boolean isNotNull(Collection collection) { return !CommonUtils.isNull(collection); } @SuppressWarnings("rawtypes") public final static boolean isNull(Map m) { return m == null || m.isEmpty(); } @SuppressWarnings("rawtypes") public final static boolean isNotNull(Map m) { return !CommonUtils.isNull(m); } /** * * @Title: isConnect * @Description: 功能：检测当前URL是否可连接或是否有效 * @Description: 已加锁，只能单线程运行调用 * @param @param urlStr 指定URL网络地址 * @return int HTTP状态码(200)-正常访问，(404)-资源不存在，(500)–服务器错误，(-1)-URL无效 * @author Tyrone.Li * @throws */ public synchronized static int isConnect(String urlStr) { URL url; HttpURLConnection con; // 返回页面代码 int state = -1; // 如果传递进来的URL为空或者长度为0，则无效 if (urlStr == null || urlStr.length() <= 0) { return state; } try { url = new URL(urlStr); con = (HttpURLConnection) url.openConnection(); // 设置连接主机超时 con.setConnectTimeout(5000