Class Util

java.lang.Object
org.apache.jasper.tagplugins.jstl.Util
public class Util extends Object
Util contains some often used consts, static methods and embedded class to support the JSTL tag plugin.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static class 
    Util.ImportResponseWrapper
    Wraps responses to allow us to retrieve results as Strings.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final String
    DEFAULT_ENCODING
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    Util()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static String
    escapeXml(char[] arrayBuffer, int length)
     
    static String
    escapeXml(String buffer)
    Performs the following substring replacements (to facilitate output to XML/HTML pages): & -> &amp < -> &lt; > -> &gt; " -> &#034; ' -> &#039; See also OutSupport.writeEscapedXml(). taken from org.apache.taglibs.standard.tag.common.core.Util
    static String
    getContentTypeAttribute(String input, String name)
    Get the value associated with a content-type attribute.
    static int
    getScope(String scope)
    Converts the given string description of a scope to the corresponding PageContext constant.
    static boolean
    isAbsoluteUrl(String url)
    Returns true if our current URL is absolute, false otherwise. taken from org.apache.taglibs.standard.tag.common.core.ImportSupport
    static String
    resolveUrl(String url, String context, PageContext pageContext)
    Utility methods taken from org.apache.taglibs.standard.tag.common.core.UrlSupport
    static String
    stripSession(String url)
    Strips a servlet session ID from url.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

  • Constructor Details

    • Util

      public Util()

  • Method Details

    • getScope

      public static int getScope(String scope)
      Converts the given string description of a scope to the corresponding PageContext constant. The validity of the given scope has already been checked by the appropriate TLV.
      Parameters:
      scope - String description of scope
      Returns:
      PageContext constant corresponding to given scope description taken from org.apache.taglibs.standard.tag.common.core.Util

    • isAbsoluteUrl

      public static boolean isAbsoluteUrl(String url)
      Returns true if our current URL is absolute, false otherwise. taken from org.apache.taglibs.standard.tag.common.core.ImportSupport
      Parameters:
      url - The URL
      Returns:
      true if the URL is absolute

    • getContentTypeAttribute

      public static String getContentTypeAttribute(String input, String name)
      Get the value associated with a content-type attribute. Syntax defined in RFC 2045, section 5.1. taken from org.apache.taglibs.standard.tag.common.core.Util
      Parameters:
      input - The attribute string
      name - The attribute name
      Returns:
      the attribute value

    • stripSession

      public static String stripSession(String url)
      Strips a servlet session ID from url. The session ID is encoded as a URL "path parameter" beginning with "jsessionid=". We thus remove anything we find between ";jsessionid=" (inclusive) and either EOS or a subsequent ';' (exclusive). taken from org.apache.taglibs.standard.tag.common.core.ImportSupport
      Parameters:
      url - The URL
      Returns:
      the URL without a user submitted session id parameter

    • escapeXml

      public static String escapeXml(String buffer)
      Performs the following substring replacements (to facilitate output to XML/HTML pages):
      • & -> &amp
      • < -> &lt;
      • > -> &gt;
      • " -> &#034;
      • ' -> &#039;
      See also OutSupport.writeEscapedXml(). taken from org.apache.taglibs.standard.tag.common.core.Util
      Parameters:
      buffer - Data to escape
      Returns:
      escaped data

    • escapeXml

      public static String escapeXml(char[] arrayBuffer, int length)

    • resolveUrl

      public static String resolveUrl(String url, String context, PageContext pageContext) throws JspException
      Utility methods taken from org.apache.taglibs.standard.tag.common.core.UrlSupport
      Parameters:
      url - The URL
      context - The context
      pageContext - The page context
      Returns:
      the absolute URL
      Throws:
      JspException - If the URL doesn't start with '/'