Jsp tag file例子以及说明(4)

      _jspxFactory.releasePageContext(_jspx_page_context); 
    } 
  } 
 
  private boolean _jspx_meth_easy_005ffirstTag_005f0(javax.servlet.jsp.PageContext _jspx_page_context) 
          throws java.lang.Throwable { 
    javax.servlet.jsp.PageContext pageContext = _jspx_page_context; 
    javax.servlet.jsp.JspWriter out = _jspx_page_context.getOut(); 
    //  easy:firstTag 
    org.apache.jsp.tag.web.firstTag_tag _jspx_th_easy_005ffirstTag_005f0 = (new org.apache.jsp.tag.web.firstTag_tag());//构造tag类 
    _jsp_instancemanager.newInstance(_jspx_th_easy_005ffirstTag_005f0); 
    _jspx_th_easy_005ffirstTag_005f0.setJspContext(_jspx_page_context); 
    _jspx_th_easy_005ffirstTag_005f0.doTag();//开始执行dotTag方法，和标准的tag lib类似. 
    _jsp_instancemanager.destroyInstance(_jspx_th_easy_005ffirstTag_005f0); 
    return false; 
  } 

例子2 在jsp引入tag file，并传递参数给tag file

encodeTagTest.jsp

[java] 
<%@ page contentType="text/html; charset=UTF-8" %> 
<%@ taglib prefix="easy" tagdir="/WEB-INF/tags" %> 
//引入tag，传入参数input,值为"<br/> means changing line" 
<easy:encode input="<br/> means changing line"/> 

encode.tag

[java] 
<%@ attribute name="input" required="true" %> 
<%! 
  //定义方法 
  private String encodeHtmlTag(String tag) { 
    if (tag==null) 
      return null; 
    int length = tag.length(); 
    StringBuffer encodedTag = new StringBuffer(2 * length); 
    for (int i=0; i<length; i++) { 
      char c = tag.charAt(i); 
      if (c=='<') 
        encodedTag.append("<"); 
      else if (c=='>') 
        encodedTag.append(">"); 
      else if (c=='&') 
        encodedTag.append("&"); 
      else if (c=='"') 
        encodedTag.append(""");   
      else if (c==' ') 
        encodedTag.append(" ");