Ejemplo n.º 1
0
 public static void main(String[] args) {
   HttpClient client = new HttpClient(); // Create an instance of HttpClient.
   GetMethod method = new GetMethod(url); // Create a method instance.	
   method
       .getParams()
       .setParameter(
           HttpMethodParams.RETRY_HANDLER,
           new DefaultHttpMethodRetryHandler(
               3, false)); // Provide custom retry handler is necessary
   try {
     int statusCode = client.executeMethod(method); // Execute the method.
     if (statusCode != HttpStatus.SC_OK) {
       System.err.println("Method failed: " + method.getStatusLine());
     }
     byte[] responseBody = method.getResponseBody(); // Read the response body.
     System.out.println(
         new String(
             responseBody)); // Deal with the response.// Use caution: ensure correct character
                             // encoding and is not binary data
   } catch (HttpException e) {
     System.err.println("Fatal protocol violation: " + e.getMessage());
     e.printStackTrace();
   } catch (IOException e) {
     System.err.println("Fatal transport error: " + e.getMessage());
     e.printStackTrace();
   } finally {
     method.releaseConnection(); // Release the connection.
   }
 }
  /** use httpclient to get the data */
  public static ByteBuffer getDataFromURI(String uri) throws IOException {

    GetMethod get = new GetMethod(uri);

    try {
      new HttpClient().executeMethod(get);
      return new ByteBuffer(get.getResponseBodyAsStream());
    } finally {
      get.releaseConnection();
    }
  }
Ejemplo n.º 3
0
 /** 根据模版及参数产生静态页面 */
 public boolean createHtmlPage(String url, String htmlFileName) {
   boolean status = false;
   int statusCode = 0;
   try {
     // 创建一个HttpClient实例充当模拟浏览器
     httpClient = new HttpClient();
     // 设置httpclient读取内容时使用的字符集
     httpClient.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, "gbk");
     // 创建GET方法的实例
     getMethod = new GetMethod(url);
     // 使用系统提供的默认的恢复策略,在发生异常时候将自动重试3次
     getMethod
         .getParams()
         .setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());
     // 设置Get方法提交参数时使用的字符集,以支持中文参数的正常传递
     getMethod.addRequestHeader("Content-Type", "text/html;charset=gbk");
     // 执行Get方法并取得返回状态码,200表示正常,其它代码为异常
     statusCode = httpClient.executeMethod(getMethod);
     if (statusCode != 200) {
       logger.fatal("静态页面引擎在解析" + url + "产生静态页面" + htmlFileName + "时出错!");
     } else {
       // 读取解析结果
       sb = new StringBuffer();
       in = getMethod.getResponseBodyAsStream();
       br = new BufferedReader(new InputStreamReader(in));
       while ((line = br.readLine()) != null) {
         sb.append(line + "\n");
       }
       if (br != null) br.close();
       page = sb.toString();
       // 将页面中的相对路径替换成绝对路径,以确保页面资源正常访问
       page = formatPage(page);
       // 将解析结果写入指定的静态HTML文件中,实现静态HTML生成
       writeHtml(htmlFileName, page);
       status = true;
     }
   } catch (Exception ex) {
     logger.fatal("静态页面引擎在解析" + url + "产生静态页面" + htmlFileName + "时出错:" + ex.getMessage());
   } finally {
     // 释放http连接
     getMethod.releaseConnection();
   }
   return status;
 }
Ejemplo n.º 4
0
 // ���� URL ָ�����ҳ
 public String downloadFile(String url) {
   String filePath = null;
   // 1.���� HttpClinet��������
   HttpClient httpClient = new HttpClient();
   // ���� HTTP���ӳ�ʱ 5s
   httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(5000);
   // 2.���� GetMethod��������
   GetMethod getMethod = new GetMethod(url);
   // ���� get����ʱ 5s
   getMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 5000);
   // �����������Դ���
   getMethod
       .getParams()
       .setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());
   // 3.ִ��GET����
   try {
     int statusCode = httpClient.executeMethod(getMethod);
     // �жϷ��ʵ�״̬��
     if (statusCode != HttpStatus.SC_OK) {
       System.err.println("Method failed: " + getMethod.getStatusLine());
       filePath = null;
     }
     // 4.���� HTTP ��Ӧ����
     byte[] responseBody = getMethod.getResponseBody(); // ��ȡΪ�ֽ�����
     // ������ҳ url ���ɱ���ʱ���ļ���
     filePath =
         "temp\\" + getFileNameByUrl(url, getMethod.getResponseHeader("Content-Type").getValue());
     File file = new File(filePath);
     if (!file.getParentFile().exists()) {
       file.getParentFile().mkdir();
     }
     saveToLocal(responseBody, filePath);
   } catch (HttpException e) {
     // �����������쳣��������Э�鲻�Ի��߷��ص�����������
     System.out.println("�������http��ַ�Ƿ���ȷ");
     e.printStackTrace();
   } catch (IOException e) {
     // ���������쳣
     e.printStackTrace();
   } finally {
     // �ͷ�����
     getMethod.releaseConnection();
   }
   return filePath;
 }
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    try {
      address = PAConfiguration.getAddress();
      port = PAConfiguration.getPort(instantiation);
      poslAddress = PAConfiguration.getPOSL(instantiation, topic);
      rdfAddress = PAConfiguration.getRDFTaxonomy(instantiation);
      messageEndpoint = PAConfiguration.getEndpointName(instantiation, topic);
    } catch (BadConfigurationException e) {
      System.out.println(e.getMessage());
      e.printStackTrace();
      System.exit(0);
    }
    response.setContentType("text/html; charset=UTF-8");
    PrintWriter out = response.getWriter();

    try {
      System.out.println("5 Publicty Chair Servlet");
      System.out.println(response.toString());

      BufferedReader brd = request.getReader();

      String input = "";
      String message = "";

      while (!input.equals("</RuleML>")) {

        input = brd.readLine();

        message = message + input;
      }
      String[] varOrder = getVariableOrder(message);
      System.out.println("Received Message: " + message);

      //	BackwardReasoner br = new BackwardReasoner();
      //   Iterator solit =null;
      //   DefiniteClause dc = null;
      //   SymbolTable.reset();

      POSLParser pp = new POSLParser();
      // String contents = "c(a).\nc(b).\nc(c).";

      Date t1 = new GregorianCalendar().getTime();
      System.out.println(t1.getHours() + ":" + t1.getMinutes());
      // append time to contents

      System.out.println("day: " + t1.getDay());
      System.out.println("day: " + t1.getYear());
      System.out.println("day: " + t1.getMonth());

      // time
      String time = "time(" + t1.getHours() + ":integer).";
      System.out.println(time);

      String url = poslAddress;

      // String url = "http://www.jdrew.org/oojdrew/test.posl";
      String contents = "";

      // day of the week
      int day = t1.getDay();
      boolean weekday = true;

      if (day == 0 || day == 6) {
        weekday = false;
      }

      String dayOfWeek;

      if (weekday) {
        dayOfWeek = "day(weekday).";
      } else {
        dayOfWeek = "day(weekend).";
      }
      // full date
      Calendar cal = new GregorianCalendar();

      int year = cal.get(Calendar.YEAR);
      int month = cal.get(Calendar.MONTH) + 1;
      int day2 = cal.get(Calendar.DAY_OF_MONTH);

      String date;

      String day3 = "" + day2;

      if (day2 == 1 || day2 == 2 || day2 == 3 || day2 == 4 || day2 == 5 || day2 == 6 || day2 == 7
          || day2 == 8 || day2 == 9) {

        day3 = "0" + day2;
      }

      if (month == 10 || month == 11 || month == 12) date = "" + year + month + day3;
      else date = "" + year + "0" + month + day3;

      date = "date(" + date + ":integer).";

      System.out.println(date);

      String url2 = rdfAddress;
      HttpClient client2 = new HttpClient();
      GetMethod method2 = new GetMethod(url2);
      method2.setFollowRedirects(true);
      String typestr = "";
      // Execute the GET method
      int statusCode2 = client2.executeMethod(method2);
      if (statusCode2 != -1) {
        typestr = method2.getResponseBodyAsString();
      }
      System.out.println("Types: " + typestr);
      Types.reset();
      RDFSParser.parseRDFSString(typestr);

      try {
        HttpClient client = new HttpClient();
        GetMethod method = new GetMethod(url);
        method.setFollowRedirects(true);

        // Execute the GET method
        int statusCode = client.executeMethod(method);
        if (statusCode != -1) {
          contents = method.getResponseBodyAsString();
        }
      } catch (Exception e) {
        e.printStackTrace();
      }
      contents = contents + "\n" + time;
      contents = contents + "\n" + dayOfWeek;
      contents = contents + "\n" + date;

      BackwardReasoner br = new BackwardReasoner();
      Iterator solit = null;
      DefiniteClause dc = null;
      SymbolTable.reset();

      pp.parseDefiniteClauses(contents);

      br.loadClauses(pp.iterator());
      System.out.println("TEST");
      Iterator it = pp.iterator();
      while (it.hasNext()) {
        DefiniteClause d = (DefiniteClause) it.next();
        System.out.println("Loaded clause: " + d.toPOSLString());
      }

      br = new BackwardReasoner(br.clauses, br.oids);

      MessageParser m = new MessageParser(message);
      Element atom = null;

      try {

        atom = m.parseForContent();

      } catch (Exception e) {

        System.out.println("Invalid Message");
        // out.flush();

      }

      QueryBuilder q = new QueryBuilder(atom);
      String query = q.generateDoc();
      System.out.println("ABOUT TO INPUT THIS QUERY:" + query);
      RuleMLParser qp = new RuleMLParser();

      try {

        dc = qp.parseRuleMLQuery(query);

      } catch (Exception e) {
        System.out.println("Invalid Query");
        // out.flush();
      }

      // solit = br.iterativeDepthFirstSolutionIterator(dc);

      solit = br.iterativeDepthFirstSolutionIterator(dc);

      int varSize = 0;

      while (solit.hasNext()) {

        Vector data = new Vector();

        BackwardReasoner.GoalList gl = (BackwardReasoner.GoalList) solit.next();

        Hashtable varbind = gl.varBindings;
        javax.swing.tree.DefaultMutableTreeNode root = br.toTree();
        root.setAllowsChildren(true);

        javax.swing.tree.DefaultTreeModel dtm = new DefaultTreeModel(root);

        int i = 0;
        Object[][] rowdata = new Object[varbind.size()][2];
        varSize = varbind.size();

        Enumeration e = varbind.keys();
        while (e.hasMoreElements()) {
          Object k = e.nextElement();
          Object val = varbind.get(k);
          String ks = (String) k;
          rowdata[i][0] = ks;
          rowdata[i][1] = val;
          i++;
        }

        data.addElement(rowdata);
        String[] messages = new String[data.size()];
        MessageGenerator g =
            new MessageGenerator(
                data, varSize, messageEndpoint, m.getId(), m.getProtocol(), m.getRel(), varOrder);
        messages = g.Messages2();

        String appender = "";

        URL sender = new URL(address + ":" + port);
        HttpMessage msg = new HttpMessage(sender);
        Properties props = new Properties();

        for (int i1 = 0; i1 < data.size(); i1++) {
          System.out.println(i1 + ")" + messages[i1].toString());
          props.put("text", messages[i1].toString());
          InputStream in = msg.sendGetMessage(props);
        }
        System.out.println("NEXT MESSAGE");
      }

      MessageGenerator g =
          new MessageGenerator(
              null, varSize, messageEndpoint, m.getId(), m.getProtocol(), m.getRel());

      URL sender = new URL(address + ":" + port);
      HttpMessage msg = new HttpMessage(sender);
      Properties props = new Properties();

      String finalMessage = g.finalMessage(query);

      System.out.println(finalMessage);

      props.put("text", finalMessage);
      InputStream in = msg.sendGetMessage(props);

      System.out.println("Stop_Communication");

    } catch (Exception e) {
      System.out.println("ERROR has occured : " + e.toString());
    }
    out.close();
  }