Java HtmlQuoting类代码示例

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
@Override
public void doFilter(HttpServletRequest request,
    HttpServletResponse response, FilterChain chain) throws IOException,
    ServletException {
  String uri = HtmlQuoting.quoteHtmlChars(request.getRequestURI());
  String redirectPath = containerLogPageRedirectPath(uri);
  if (redirectPath != null) {
    String redirectMsg =
        "Redirecting to log server" + " : " + redirectPath;
    PrintWriter out = response.getWriter();
    out.println(redirectMsg);
    response.setHeader("Location", redirectPath);
    response.setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT);
    return;
  }
  super.doFilter(request, response, chain);
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
public static void printGotoForm(JspWriter out,
                                 int namenodeInfoPort,
                                 String tokenString,
                                 String file,
                                 String nnAddress) throws IOException {
  out.print("<form action=\"browseDirectory.jsp\" method=\"get\" name=\"goto\">");
  out.print("Goto : ");
  out.print("<input name=\"dir\" type=\"text\" width=\"50\" id=\"dir\" value=\""+ HtmlQuoting.quoteHtmlChars(file)+"\"/>");
  out.print("<input name=\"go\" type=\"submit\" value=\"go\"/>");
  out.print("<input name=\"namenodeInfoPort\" type=\"hidden\" "
      + "value=\"" + namenodeInfoPort  + "\"/>");
  if (UserGroupInformation.isSecurityEnabled()) {
    out.print("<input name=\"" + DELEGATION_PARAMETER_NAME
        + "\" type=\"hidden\" value=\"" + tokenString + "\"/>");
  }
  out.print("<input name=\""+ NAMENODE_ADDRESS +"\" type=\"hidden\" "
      + "value=\"" + nnAddress  + "\"/>");
  out.print("</form>");
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
private void handleRedirect(HttpServletRequest servletRequest, HttpServletResponse httpServletResponse,
                            String activeServerAddress) throws IOException {
    String requestURI = servletRequest.getRequestURI();
    String queryString = servletRequest.getQueryString();
    if ((queryString != null) && (!queryString.isEmpty())) {
        requestURI += "?" + queryString;
    }
    String quotedUri = HtmlQuoting.quoteHtmlChars(requestURI);
    if (quotedUri == null) {
        quotedUri = "/";
    }
    String redirectLocation = activeServerAddress + quotedUri;
    LOG.info("Not active. Redirecting to {}", redirectLocation);
    // A POST/PUT/DELETE require special handling by sending HTTP 307 instead of the regular 301/302.
    // Reference: http://stackoverflow.com/questions/2068418/whats-the-difference-between-a-302-and-a-307-redirect
    if (isUnsafeHttpMethod(servletRequest)) {
        httpServletResponse.setHeader(HttpHeaders.LOCATION, redirectLocation);
        httpServletResponse.setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT);
    } else {
        httpServletResponse.sendRedirect(redirectLocation);
    }
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
public static void printGotoForm(JspWriter out, int namenodeInfoPort,
    String tokenString, String file, String nnAddress) throws IOException {
  out.print(
      "<form action=\"browseDirectory.jsp\" method=\"get\" name=\"goto\">");
  out.print("Goto : ");
  out.print(
      "<input name=\"dir\" type=\"text\" width=\"50\" id=\"dir\" value=\"" +
          HtmlQuoting.quoteHtmlChars(file) + "\"/>");
  out.print("<input name=\"go\" type=\"submit\" value=\"go\"/>");
  out.print("<input name=\"namenodeInfoPort\" type=\"hidden\" " + "value=\"" +
      namenodeInfoPort + "\"/>");
  if (UserGroupInformation.isSecurityEnabled()) {
    out.print("<input name=\"" + DELEGATION_PARAMETER_NAME +
        "\" type=\"hidden\" value=\"" + tokenString + "\"/>");
  }
  out.print("<input name=\"" + NAMENODE_ADDRESS + "\" type=\"hidden\" " +
      "value=\"" + nnAddress + "\"/>");
  out.print("</form>");
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
/**
 * Nicely print the Job-ACLs
 * @param tracker
 * @param jobAcls
 * @param out
 * @throws IOException
 */
static void printJobACLs(JobTracker tracker,
    Map<JobACL, AccessControlList> jobAcls, JspWriter out)
    throws IOException {
  if (tracker.areACLsEnabled()) {
    // Display job-view-acls and job-modify-acls configured for this job
    out.print("<b>Job-ACLs:</b><br>");
    for (JobACL aclName : JobACL.values()) {
      String aclConfigName = aclName.getAclName();
      AccessControlList aclConfigured = jobAcls.get(aclName);
      if (aclConfigured != null) {
        String aclStr = aclConfigured.toString();
        out.print("&nbsp;&nbsp;&nbsp;&nbsp;" + aclConfigName + ": "
            + HtmlQuoting.quoteHtmlChars(aclStr) + "<br>");
      }
    }
  }
  else {
    out.print("<b>Job-ACLs: " + new AccessControlList("*").toString()
        + "</b><br>");
  }
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
private void printJob(String timestamp,
                      String jobId, String jobName,
                      String user, Path logFile, JspWriter out)
throws IOException {
  out.print("<tr>"); 
  out.print("<td>" + new Date(Long.parseLong(timestamp)) + "</td>"); 
  out.print("<td>" + "<a href=\"jobdetailshistory.jsp?logFile=" 
      + logFile.toString() + "\">" + jobId + "</a></td>");
  out.print("<td>"
            + HtmlQuoting.quoteHtmlChars(unescapeUnderscores(jobName))
            + "</td>"); 
  out.print("<td>"
            + HtmlQuoting.quoteHtmlChars(unescapeUnderscores(user))
            + "</td>"); 
  out.print("</tr>");
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
@Override
public void doFilter(HttpServletRequest request,
    HttpServletResponse response, FilterChain chain) throws IOException,
    ServletException {
  response.setCharacterEncoding("UTF-8");
  String uri = HtmlQuoting.quoteHtmlChars(request.getRequestURI());
  String queryString = request.getQueryString();

  if (uri == null) {
    uri = "/";
  }
  if (queryString != null) {
    uri = uri + "?" + queryString;
  }
  RMWebApp rmWebApp = injector.getInstance(RMWebApp.class);
  rmWebApp.checkIfStandbyRM();
  if (rmWebApp.isStandby()
      && shouldRedirect(rmWebApp, uri)) {
    String redirectPath = rmWebApp.getRedirectPath() + uri;

    if (redirectPath != null && !redirectPath.isEmpty()) {
      String redirectMsg =
          "This is standby RM. The redirect url is: " + redirectPath;
      PrintWriter out = response.getWriter();
      out.println(redirectMsg);
      response.setHeader("Location", redirectPath);
      response.setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT);
      return;
    }
  }

  super.doFilter(request, response, chain);

}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
@Override
public void doFilter(HttpServletRequest request,
    HttpServletResponse response, FilterChain chain) throws IOException,
    ServletException {
  response.setCharacterEncoding("UTF-8");
  String uri = HtmlQuoting.quoteHtmlChars(request.getRequestURI());

  if (uri == null) {
    uri = "/";
  }
  RMWebApp rmWebApp = injector.getInstance(RMWebApp.class);
  rmWebApp.checkIfStandbyRM();
  if (rmWebApp.isStandby()
      && shouldRedirect(rmWebApp, uri)) {
    String redirectPath = rmWebApp.getRedirectPath() + uri;

    if (redirectPath != null && !redirectPath.isEmpty()) {
      String redirectMsg =
          "This is standby RM. The redirect url is: " + redirectPath;
      PrintWriter out = response.getWriter();
      out.println(redirectMsg);
      response.setHeader("Location", redirectPath);
      response.setStatus(HttpServletResponse.SC_TEMPORARY_REDIRECT);
      return;
    }
  }

  super.doFilter(request, response, chain);

}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
@Override
public void doFilter(HttpServletRequest request,
    HttpServletResponse response, FilterChain chain) throws IOException,
    ServletException {
  response.setCharacterEncoding("UTF-8");
  String uri = HtmlQuoting.quoteHtmlChars(request.getRequestURI());

  if (uri == null) {
    uri = "/";
  }
  RMWebApp rmWebApp = injector.getInstance(RMWebApp.class);
  rmWebApp.checkIfStandbyRM();
  if (rmWebApp.isStandby()
      && shouldRedirect(rmWebApp, uri)) {
    String redirectPath = rmWebApp.getRedirectPath() + uri;

    if (redirectPath != null && !redirectPath.isEmpty()) {
      String redirectMsg =
          "This is standby RM. Redirecting to the current active RM: "
              + redirectPath;
      response.addHeader("Refresh", "3; url=" + redirectPath);
      PrintWriter out = response.getWriter();
      out.println(redirectMsg);
      return;
    }
  }

  super.doFilter(request, response, chain);

}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
public static void printPathWithLinks(String dir, JspWriter out, 
                                      int namenodeInfoPort,
                                      String tokenString,
                                      String nnAddress
                                      ) throws IOException {
  try {
    String[] parts = dir.split(Path.SEPARATOR);
    StringBuilder tempPath = new StringBuilder(dir.length());
    out.print("<a href=\"browseDirectory.jsp" + "?dir="+ Path.SEPARATOR
        + "&namenodeInfoPort=" + namenodeInfoPort
        + getDelegationTokenUrlParam(tokenString) 
        + getUrlParam(NAMENODE_ADDRESS, nnAddress) + "\">" + Path.SEPARATOR
        + "</a>");
    tempPath.append(Path.SEPARATOR);
    for (int i = 0; i < parts.length-1; i++) {
      if (!parts[i].equals("")) {
        tempPath.append(parts[i]);
        out.print("<a href=\"browseDirectory.jsp" + "?dir="
            + HtmlQuoting.quoteHtmlChars(tempPath.toString()) + "&namenodeInfoPort=" + namenodeInfoPort
            + getDelegationTokenUrlParam(tokenString)
            + getUrlParam(NAMENODE_ADDRESS, nnAddress));
        out.print("\">" + HtmlQuoting.quoteHtmlChars(parts[i]) + "</a>" + Path.SEPARATOR);
        tempPath.append(Path.SEPARATOR);
      }
    }
    if(parts.length > 0) {
      out.print(HtmlQuoting.quoteHtmlChars(parts[parts.length-1]));
    }
  }
  catch (UnsupportedEncodingException ex) {
    ex.printStackTrace();
  }
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
/**
 * Get a HTML escaped uri with the query parameters of the request.
 * @param request HttpServletRequest with the request details
 * @return HTML escaped uri with the query paramters
 */
public static String getHtmlEscapedURIWithQueryString(
    HttpServletRequest request) {
  String urlEncodedQueryString = getURLEncodedQueryString(request);
  if (urlEncodedQueryString != null) {
    return HtmlQuoting.quoteHtmlChars(
        request.getRequestURI() + "?" + urlEncodedQueryString);
  }
  return HtmlQuoting.quoteHtmlChars(request.getRequestURI());
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
public static void printPathWithLinks(String dir, JspWriter out,
    int namenodeInfoPort, String tokenString, String nnAddress)
    throws IOException {
  try {
    String[] parts = dir.split(Path.SEPARATOR);
    StringBuilder tempPath = new StringBuilder(dir.length());
    out.print("<a href=\"browseDirectory.jsp" + "?dir=" + Path.SEPARATOR +
        "&namenodeInfoPort=" + namenodeInfoPort +
        getDelegationTokenUrlParam(tokenString) +
        getUrlParam(NAMENODE_ADDRESS, nnAddress) + "\">" + Path.SEPARATOR +
        "</a>");
    tempPath.append(Path.SEPARATOR);
    for (int i = 0; i < parts.length - 1; i++) {
      if (!parts[i].equals("")) {
        tempPath.append(parts[i]);
        out.print("<a href=\"browseDirectory.jsp" + "?dir=" +
            HtmlQuoting.quoteHtmlChars(tempPath.toString()) +
            "&namenodeInfoPort=" + namenodeInfoPort +
            getDelegationTokenUrlParam(tokenString) +
            getUrlParam(NAMENODE_ADDRESS, nnAddress));
        out.print("\">" + HtmlQuoting.quoteHtmlChars(parts[i]) + "</a>" +
            Path.SEPARATOR);
        tempPath.append(Path.SEPARATOR);
      }
    }
    if (parts.length > 0) {
      out.print(HtmlQuoting.quoteHtmlChars(parts[parts.length - 1]));
    }
  } catch (UnsupportedEncodingException ex) {
    ex.printStackTrace();
  }
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
@Override
public void doFilter(HttpServletRequest request,
    HttpServletResponse response, FilterChain chain) throws IOException,
    ServletException {
  response.setCharacterEncoding("UTF-8");
  String uri = HtmlQuoting.quoteHtmlChars(request.getRequestURI());

  if (uri == null) {
    uri = "/";
  }
  RMWebApp rmWebApp = injector.getInstance(RMWebApp.class);
  rmWebApp.checkIfStandbyRM();
  if (rmWebApp.isStandby()
      && !uri.equals("/" + rmWebApp.wsName() + "/v1/cluster/info")
      && !uri.equals("/" + rmWebApp.name() + "/cluster")) {
    String redirectPath = rmWebApp.getRedirectPath() + uri;

    if (redirectPath != null && !redirectPath.isEmpty()) {
      String redirectMsg =
          "This is standby RM. Redirecting to the current active RM: "
              + redirectPath;
      response.addHeader("Refresh", "3; url=" + redirectPath);
      PrintWriter out = response.getWriter();
      out.println(redirectMsg);
      return;
    }
  }

  super.doFilter(request, response, chain);

}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
public static void streamBlockInAscii(InetSocketAddress addr, 
    long blockId, Token<BlockTokenIdentifier> blockToken, long genStamp,
    long blockSize, long offsetIntoBlock, long chunkSizeToView,
    JspWriter out, Configuration conf) throws IOException {
  if (chunkSizeToView == 0) return;
  Socket s = new Socket();
  s.connect(addr, HdfsConstants.READ_TIMEOUT);
  s.setSoTimeout(HdfsConstants.READ_TIMEOUT);
    
    long amtToRead = Math.min(chunkSizeToView, blockSize - offsetIntoBlock);     
    
    // Use the block name for file name. 
    String file = BlockReader.getFileName(addr, blockId);
    BlockReader blockReader = BlockReader.newBlockReader(s, file,
      new Block(blockId, 0, genStamp), blockToken,
      offsetIntoBlock, amtToRead, conf.getInt("io.file.buffer.size", 4096));
      
  byte[] buf = new byte[(int)amtToRead];
  int readOffset = 0;
  int retries = 2;
  while ( amtToRead > 0 ) {
    int numRead;
    try {
      numRead = blockReader.readAll(buf, readOffset, (int)amtToRead);
    }
    catch (IOException e) {
      retries--;
      if (retries == 0)
        throw new IOException("Could not read data from datanode");
      continue;
    }
    amtToRead -= numRead;
    readOffset += numRead;
  }
  blockReader = null;
  s.close();
  out.print(HtmlQuoting.quoteHtmlChars(new String(buf)));
}
 

import org.apache.hadoop.http.HtmlQuoting; //导入依赖的package包/类
private void printBlackListedTrackers(JspWriter out, 
                           JobInProgress job) throws IOException {
  Map<String, Integer> trackerErrors = job.getTaskTrackerErrors();
  out.print("<table border=2 cellpadding=\"5\" cellspacing=\"2\">");
  out.print("<tr><th>TaskTracker</th><th>No. of Failures</th></tr>\n");
  int maxErrorsPerTracker = job.getJobConf().getMaxTaskFailuresPerTracker();
  for (Map.Entry<String,Integer> e : trackerErrors.entrySet()) {
    if (e.getValue().intValue() >= maxErrorsPerTracker) {
      out.print("<tr><td>" + HtmlQuoting.quoteHtmlChars(e.getKey()) +
          "</td><td>" + e.getValue() + "</td></tr>\n");
    }
  }
  out.print("</table>\n");
}