struts-logic.tld

ActionServlet源码 struts的一个步骤都有 知道本来有视频的太大了 就没有上传了

    Evaluate the nested body content of this tag if the requested
    variable is less than or equal to the specified value.
    </strong></p>
          
    <p>Compares the variable specified by one of the selector attributes
    against the specified constant value.  The nested body content of this
    tag is evaluated if the variable is <strong>less than or equal</strong>
    to the value.</p>
    ]]>
        </description>
        <attribute>
            <name>cookie</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the value of the cookie whose
      name is specified by this attribute.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>header</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the value of the header whose
      name is specified by this attribute.  The name match is performed
      in a case insensitive manner.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>name</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the JSP bean specified by this
      attribute, if <code>property</code> is not specified, or the value
      of the specified property of this bean, if <code>property</code>
      is specified.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>parameter</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the first, or only, value of the
      request parameter specified by this attribute.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>property</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the property (of the bean specified
      by the <code>name</code> attribute) specified by this attribute.
      The property reference can be simple, nested, or indexed.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>scope</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The bean scope within which to search for the bean named by the
      <code>name</code> property, or "any scope" if not specified.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>value</name>
            <required>true</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The constant value to which the variable, specified by other
      attribute(s) of this tag, will be compared.</p>
      ]]>
            </description>
        </attribute>
    </tag>
    <tag>
        <name>lessThan</name>
        <tag-class>org.apache.struts.taglib.logic.LessThanTag</tag-class>
        <body-content>JSP</body-content>
        <description>
            <![CDATA[
            <p><strong>
    Evaluate the nested body content of this tag if the requested
    variable is less than the specified value.
    </strong></p>
          
    <p>Compares the variable specified by one of the selector attributes
    against the specified constant value.  The nested body content of this
    tag is evaluated if the variable is <strong>less than</strong>
    the value.</p>
    ]]>
        </description>
        <attribute>
            <name>cookie</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the value of the cookie whose
      name is specified by this attribute.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>header</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the value of the header whose
      name is specified by this attribute.  The name match is performed
      in a case insensitive manner.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>name</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the JSP bean specified by this
      attribute, if <code>property</code> is not specified, or the value
      of the specified property of this bean, if <code>property</code>
      is specified.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>parameter</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the first, or only, value of the
      request parameter specified by this attribute.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>property</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be compared is the property (of the bean specified
      by the <code>name</code> attribute) specified by this attribute.
      The property reference can be simple, nested, and/or indexed.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>scope</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The bean scope within which to search for the bean named by the
      <code>name</code> property, or "any scope" if not specified.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>value</name>
            <required>true</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The constant value to which the variable, specified by other
      attribute(s) of this tag, will be compared.</p>
      ]]>
            </description>
        </attribute>
    </tag>
    <tag>
        <name>match</name>
        <tag-class>org.apache.struts.taglib.logic.MatchTag</tag-class>
        <body-content>JSP</body-content>
        <description>
            <![CDATA[
            <p><strong>
    Evaluate the nested body content of this tag if the specified value
    is an appropriate substring of the requested variable.
    </strong></p>
          
    <p>Matches the variable specified by one of the selector attributes
    (as a String) against the specified constant value.  If the value is
    a substring (appropriately limited by the <code>location</code>
    attribute), the nested body content of this tag is evaluated.</p>
    ]]>
        </description>
        <attribute>
            <name>cookie</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be matched is the value of the cookie whose
      name is specified by this attribute.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>header</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be matched is the value of the header whose
      name is specified by this attribute.  The name match is performed
      in a case insensitive manner.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>location</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>If not specified, a match between the variable and the value may
      occur at any position within the variable string.  If specified, the
      match must occur at the specified location (either <code>start</code>
      or <code>end</code>) of the variable string.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>name</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be matched is the JSP bean specified by this
      attribute, if <code>property</code> is not specified, or the value
      of the specified property of this bean, if <code>property</code>
      is specified.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>parameter</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be matched is the first, or only, value of the
      request parameter specified by this attribute.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>property</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The variable to be matched is the property (of the bean specified
      by the <code>name</code> attribute) specified by this attribute.
      The property reference can be simple, nested, and/or indexed.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>scope</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The bean scope within which to search for the bean named by the
      <code>name</code> property, or "any scope" if not specified.</p>
      ]]>
            </description>
        </attribute>
        <attribute>
            <name>value</name>
            <required>true</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The constant value which is checked for existence as a substring
      of the specified variable.</p>
      ]]>
            </description>
        </attribute>
    </tag>
    <tag>
        <name>messagesNotPresent</name>
        <tag-class>
            org.apache.struts.taglib.logic.MessagesNotPresentTag</tag-class>
        <body-content>JSP</body-content>
        <description>
            <![CDATA[
            <p><strong>
    Generate the nested body content of this tag if the specified
    message is not present in any scope.
    </strong></p>
          
    <p>Evaluates the nested body content of this tag if
       an <code>ActionMessages</code>
       object, <code>ActionErrors</code> object, a String,
       or a String array is not present in any scope.  If
       such a bean is found, nothing will be rendered.
    </p>
    
            <dl><dt><b>Since:</b></dt>
            <dd>Struts 1.1</dd></dl>
          ]]>
        </description>
        <attribute>
            <name>name</name>
            <required>false</required>
            <rtexprvalue>true</rtexprvalue>
            <description>
                <![CDATA[
      <p>The parameter key used to retrieve the message from page, request,
      session or application scope.</p>
      ]]>