import org.apache.jasper.compiler.tagplugin.TagPlugin; //导入依赖的package包/类
/**
 * Invoke tag plugin for the given custom tag, if a plugin exists for
 * the custom tag's tag handler.
 *
 * The given custom tag node will be manipulated by the plugin.
 */
private void invokePlugin(Node.CustomTag n, PageInfo pageInfo) {
    TagPlugin tagPlugin = tagPlugins.get(n.getTagHandlerClass().getName());
    if (tagPlugin == null) {
        return;
    }

    TagPluginContext tagPluginContext = new TagPluginContextImpl(n, pageInfo);
    n.setTagPluginContext(tagPluginContext);
    tagPlugin.doTag(tagPluginContext);
}
 

import org.apache.jasper.compiler.tagplugin.TagPlugin; //导入依赖的package包/类
/**
    * Invoke tag plugin for the given custom tag, if a plugin exists for 
    * the custom tag's tag handler.
    *
    * The given custom tag node will be manipulated by the plugin.
    */
   private void invokePlugin(Node.CustomTag n) {
TagPlugin tagPlugin = (TagPlugin)
	tagPlugins.get(n.getTagHandlerClass().getName());
if (tagPlugin == null) {
    return;
}

TagPluginContext tagPluginContext = new TagPluginContextImpl(n, pageInfo);
n.setTagPluginContext(tagPluginContext);
tagPlugin.doTag(tagPluginContext);
   }
 

import org.apache.jasper.compiler.tagplugin.TagPlugin; //导入依赖的package包/类
/**
 * Invoke tag plugin for the given custom tag, if a plugin exists for the
 * custom tag's tag handler.
 *
 * The given custom tag node will be manipulated by the plugin.
 */
private void invokePlugin(Node.CustomTag n, PageInfo pageInfo) {
	TagPlugin tagPlugin = tagPlugins.get(n.getTagHandlerClass().getName());
	if (tagPlugin == null) {
		return;
	}

	TagPluginContext tagPluginContext = new TagPluginContextImpl(n, pageInfo);
	n.setTagPluginContext(tagPluginContext);
	tagPlugin.doTag(tagPluginContext);
}
 

import org.apache.jasper.compiler.tagplugin.TagPlugin; //导入依赖的package包/类
/**
 * Invoke tag plugin for the given custom tag, if a plugin exists for
 * the custom tag's tag handler.
 * <p/>
 * The given custom tag node will be manipulated by the plugin.
 */
private void invokePlugin(Node.CustomTag n, PageInfo pageInfo) {
    TagPlugin tagPlugin = tagPlugins.get(n.getTagHandlerClass().getName());
    if (tagPlugin == null) {
        return;
    }

    TagPluginContext tagPluginContext = new TagPluginContextImpl(n, pageInfo);
    n.setTagPluginContext(tagPluginContext);
    tagPlugin.doTag(tagPluginContext);
}
 

import org.apache.jasper.compiler.tagplugin.TagPlugin; //导入依赖的package包/类
/**
    * Invoke tag plugin for the given custom tag, if a plugin exists for 
    * the custom tag's tag handler.
    *
    * The given custom tag node will be manipulated by the plugin.
    */
   private void invokePlugin(Node.CustomTag n) {
TagPlugin tagPlugin = tagPlugins.get(n.getTagHandlerClass().getName());
if (tagPlugin == null) {
    return;
}

TagPluginContext tagPluginContext = new TagPluginContextImpl(n, pageInfo);
n.setTagPluginContext(tagPluginContext);
tagPlugin.doTag(tagPluginContext);
   }
 

import org.apache.jasper.compiler.tagplugin.TagPlugin; //导入依赖的package包/类
/**
 * Invoke tag plugin for the given custom tag, if a plugin exists for 
 * the custom tag's tag handler.
 *
 * The given custom tag node will be manipulated by the plugin.
 */
private void invokePlugin(Node.CustomTag n) {
    TagPlugin tagPlugin = tagPlugins.get(n.getTagHandlerClass().getName());
    if (tagPlugin == null) {
        return;
    }

    TagPluginContext tagPluginContext = new TagPluginContextImpl(n, pageInfo);
    n.setTagPluginContext(tagPluginContext);
    tagPlugin.doTag(tagPluginContext);
}
 

import org.apache.jasper.compiler.tagplugin.TagPlugin; //导入依赖的package包/类
private void init(ErrorDispatcher err) throws JasperException {
if (initialized)
    return;

InputStream is = ctxt.getResourceAsStream(TAG_PLUGINS_XML);
if (is == null)
    return;

TreeNode root = (new ParserUtils()).parseXMLDocument(TAG_PLUGINS_XML,
						     is);
if (root == null) {
    return;
}

if (!TAG_PLUGINS_ROOT_ELEM.equals(root.getName())) {
    err.jspError("jsp.error.plugin.wrongRootElement", TAG_PLUGINS_XML,
		 TAG_PLUGINS_ROOT_ELEM);
}

tagPlugins = new HashMap<String, TagPlugin>();
Iterator pluginList = root.findChildren("tag-plugin");
while (pluginList.hasNext()) {
    TreeNode pluginNode = (TreeNode) pluginList.next();
           TreeNode tagClassNode = pluginNode.findChild("tag-class");
    if (tagClassNode == null) {
	// Error
	return;
    }
    String tagClass = tagClassNode.getBody().trim();
    TreeNode pluginClassNode = pluginNode.findChild("plugin-class");
    if (pluginClassNode == null) {
	// Error
	return;
    }

    String pluginClassStr = pluginClassNode.getBody();
    TagPlugin tagPlugin = null;
    try {
	Class<? extends TagPlugin> pluginClass =
                   Class.forName(pluginClassStr).asSubclass(TagPlugin.class);
	tagPlugin =  pluginClass.newInstance();
    } catch (Exception e) {
	throw new JasperException(e);
    }
    if (tagPlugin == null) {
	return;
    }
    tagPlugins.put(tagClass, tagPlugin);
}
initialized = true;
   }
 

import org.apache.jasper.compiler.tagplugin.TagPlugin; //导入依赖的package包/类
private void init(ErrorDispatcher err) throws JasperException {
if (initialized)
    return;

InputStream is = ctxt.getResourceAsStream(TAG_PLUGINS_XML);
if (is == null)
    return;

       boolean blockExternal = Boolean.parseBoolean(ctxt.getInitParameter(
                                   Constants.XML_BLOCK_EXTERNAL_INIT_PARAM));
TreeNode root = (new ParserUtils(blockExternal)).parseXMLDocument(TAG_PLUGINS_XML,
						     is);
if (root == null) {
    return;
}

if (!TAG_PLUGINS_ROOT_ELEM.equals(root.getName())) {
    err.jspError("jsp.error.plugin.wrongRootElement", TAG_PLUGINS_XML,
		 TAG_PLUGINS_ROOT_ELEM);
}

tagPlugins = new HashMap<String, TagPlugin>();
Iterator pluginList = root.findChildren("tag-plugin");
while (pluginList.hasNext()) {
    TreeNode pluginNode = (TreeNode) pluginList.next();
           TreeNode tagClassNode = pluginNode.findChild("tag-class");
    if (tagClassNode == null) {
	// Error
	return;
    }
    String tagClass = tagClassNode.getBody().trim();
    TreeNode pluginClassNode = pluginNode.findChild("plugin-class");
    if (pluginClassNode == null) {
	// Error
	return;
    }

    String pluginClassStr = pluginClassNode.getBody();
    TagPlugin tagPlugin = null;
    try {
	Class<? extends TagPlugin> pluginClass =
                   Class.forName(pluginClassStr).asSubclass(TagPlugin.class);
	tagPlugin =  pluginClass.newInstance();
    } catch (Exception e) {
	throw new JasperException(e);
    }
    if (tagPlugin == null) {
	return;
    }
    tagPlugins.put(tagClass, tagPlugin);
}
initialized = true;
   }