Package org.apache.jasper.tagplugins.jstl

Class Util

  • public class Util
extends java.lang.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 java.lang.String DEFAULT_ENCODING  

    • Constructor Summary

      Constructors 
      Constructor Description
      Util()  

    • Method Summary

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

      • DEFAULT_ENCODING

        public static final java.lang.String DEFAULT_ENCODING
        See Also:
        Constant Field Values

    • Constructor Detail

      • Util

        public Util()

    • Method Detail

      • getScope

        public static int getScope​(java.lang.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​(java.lang.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 java.lang.String getContentTypeAttribute​(java.lang.String input,
                                                       java.lang.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 java.lang.String stripSession​(java.lang.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 java.lang.String escapeXml​(java.lang.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 java.lang.String escapeXml​(char[] arrayBuffer,
                                         int length)

      • resolveUrl

        public static java.lang.String resolveUrl​(java.lang.String url,
                                          java.lang.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 '/'