开始整理自己的标签库BluesTags1.0（包含最新版AJAX无限级树菜单）

package blues.lee.tags.ajaxTree; import javax.servlet.jsp.tagext.Tag; import javax.servlet.jsp.PageContext; import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspWriter; import java.util.List; /** * 树标签处理类 <br> * Author：李鹏 <br> * CreateDate：2006-11-15 <br> * Modifier：李鹏 <br> * ModifyDate：2008-7-29 <br> * Version:2.0<br> * Copyright(c)2008 深蓝工作室<br> * All right reserved.<br> * */ public class BlueTreeTag implements Tag { private PageContext pageContext; private Tag parent; public String rootId; //根节点ID public String blueClass; //根据节点ID获得所有该节点子节点的实现类 public String blueURL; //点击节点超连接---isUseDataURL为false时有用 public boolean isUseDataURL; //是否使用节点封装对象的节点超连接 public String rootName; //根节点名称 public String imageURL; //所有图片目录路径 public String rootImage; //根节点图片 public String folderImg; //有子节点关闭图片 public String folderOpenImg; //有子节点展开图片 public String fileImg; //无子节点图片 public String openImg; //节点展开图片 public String closeImg; //节点关闭图片 public String elementLineImg; //带有节点的线图片 public String lineImg; //无节点的线图片 public String endLineImg; //最后一个节点线图片 public String endFolderOpenImg; //最后一个有子节点展开图片 public String endFolderCloseImg; //最后一个有子节点关闭图片 public String noneImg;//空白图片 public boolean isFolderURL; //是否给有子节点的节点加超连接---isUseDataURL为false时有用 public String rootURL; //根节点连接 public String target; //所有连接的target属性 public String linkClass; //超连接样式 public String styleClass; //总样式 public String imgClass; //图片样式 public String useDataImg; //节点图片是否使用数据类图片，no为不使用，first为仅第一级目录使用，all全部使用 public String js; //设置JS文件位置 public String onMouseOver; //鼠标经过每个节点时的样式 public String onMouseOut; //鼠标离开每个节点时的样式 public BlueTreeTag() { super(); this.rootId = "0"; this.blueClass = null; //必须设置 this.blueURL = "javascript:void(0);"; this.isUseDataURL = false; this.rootName = "根节点"; this.rootImage = "rootImage.gif"; this.imageURL = null; //必须设置 this.folderImg = "folder.gif"; this.folderOpenImg = "folderOpen.gif"; this.fileImg = "file.gif"; this.openImg = "open.gif"; this.closeImg = "close.gif"; this.elementLineImg = "elementLine.gif"; this.lineImg = "line.gif"; this.endLineImg = "endLine.gif"; this.endFolderOpenImg = "endFolderOpen.gif"; this.endFolderCloseImg = "endFolderClose.gif"; this.noneImg = "none.gif"; this.isFolderURL = true; this.rootURL = "javascript:void(0);"; this.target = "_blank"; this.linkClass=""; this.imgClass=""; this.styleClass=""; this.useDataImg="no"; this.js=null; //必须设置 this.onMouseOver="#CCCCCC"; this.onMouseOut=""; } /** * 设置标签的页面上下文 * @param pageContext */ public void setPageContext(PageContext pageContext) { this.pageContext = pageContext; } /** * 设置上一级标签 * @param t */ public void setParent(Tag parent) { this.parent = parent; } public Tag getParent() { return this.parent; } /** * 开始标签时的操作 * @return * @throws JspException */ public int doStartTag() throws JspException { if(this.blueClass==null){ throw new JspException("树标签blueClass属性未设置！"); } if(this.imageURL==null){ throw new JspException("树标签imageURL属性未设置！"); } if(this.js==null){ throw new JspException("树标签js属性未设置！"); } return BlueTreeTag.SKIP_BODY; //返回SKIP_BODY，表示不计算标签体 } /** * 结束标签时的操作 * @return * @throws JspException */ public int doEndTag() throws JspException { JspWriter out = this.pageContext.getOut(); try { String tree = this.createTree(); out.print(tree); } catch (Exception ex) { throw new JspException("创建树错误:" + ex.getMessage()); } return BlueTreeTag.EVAL_PAGE; } /** * Release 用于释放标签程序占用的资源，比如使用了数据库连接，那么应该关闭这个连接 */ public void release() { } /** * 构建树 * @return 返回树HTML代码字符串 */ public String createTree() throws Exception { StringBuffer result = new StringBuffer(); BlueTreeFactory treeFactory = new BlueTreeFactory(); BlueTreeInterFace tree = (BlueTreeInterFace) treeFactory.create(this. blueClass); List elements = null; elements = tree.getTreeElements(this.rootId,null); result.append("<script type='text/javascript'>"); result.append("function init(){"); result.append("BlueTree['rootId']='"+this.rootId+"';"); result.append("BlueTree['blueClass']='"+this.blueClass+"';"); result.append("BlueTree['blueURL']='"+this.blueURL+"';"); result.append("BlueTree['isUseDataURL']='"+this.isUseDataURL+"';"); result.append("BlueTree['rootName']='"+this.rootName+"';"); result.append("BlueTree['imageURL']='"+this.imageURL+"';"); result.append("BlueTree['rootImage']='"+this.rootImage+"';"); result.append("BlueTree['folderImg']='"+this.folderImg+"';"); result.append("BlueTree['folderOpenImg']='"+this.folderOpenImg+"';"); result.append("BlueTree['fileImg']='"+this.fileImg+"';"); result.append("BlueTree['openImg']='"+this.openImg+"';"); result.append("BlueTree['closeImg']='"+this.closeImg+"';"); result.append("BlueTree['elementLineImg']='"+this.elementLineImg+"';"); result.append("BlueTree['lineImg']='"+this.lineImg+"';"); result.append("BlueTree['endLineImg']='"+this.endLineImg+"';"); result.append("BlueTree['endFolderOpenImg']='"+this.endFolderOpenImg+"';"); result.append("BlueTree['endFolderCloseImg']='"+this.endFolderCloseImg+"';"); result.append("BlueTree['noneImg']='"+this.noneImg+"';"); result.append("BlueTree['isFolderURL']='"+this.isFolderURL+"';"); result.append("BlueTree['rootURL']='"+this.rootURL+"';"); result.append("BlueTree['target']='"+this.target+"';"); result.append("BlueTree['linkClass']='"+this.linkClass+"';"); result.append("BlueTree['styleClass']='"+this.styleClass+"';"); result.append("BlueTree['imgClass']='"+this.imgClass+"';"); result.append("BlueTree['useDataImg']='"+this.useDataImg+"';"); result.append("BlueTree['js']='"+this.js+"';"); result.append("BlueTree['onMouseOver']='"+this.onMouseOver+"';"); result.append("BlueTree['onMouseOut']='"+this.onMouseOut+"';"); result.append("}"); result.append("</script>"); // //样式 // result.append("<style>"); // result.append(".onMouseOver{"); // result.append("background-color:#CCCCCC;"); // result.append("}"); // result.append(".onMouseOut{"); // result.append("}"); // result.append("</style>"); //js result.append("<script src=\""); result.append(this.js); result.append("\">"); result.append("</script>"); //开始创建树 result.append("<table id=\"root\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\" class=\""); result.append(this.styleClass); result.append("\">"); //创建跟节点 result.append("<tr onMouseOver=\"mouseOverNode();\""); result.append(" onMouseOut=\"mouseOutNode();\">"); result.append("<td style=\"white-space:nowrap;\">"); result.append("<a class=\""); result.append(this.linkClass); result.append("\" href=\""); result.append(this.rootURL); result.append("\" target=\""); result.append(this.target); result.append("\">"); result.append("<img align=\"absmiddle\" class=\""); result.append(this.imgClass); result.append("\" src=\""); result.append(this.image