从会话 bean 评估 JSTL

发布于 2024-11-10 06:56:54 字数 897 浏览 3 评论 0原文

我有一个提供 JSP 的 servlet，并且我正在尝试从会话 bean 的字符串中输出自定义标记。自定义标签无需评估即可打印出来。如果我将自定义标签添加到 JSP，它就像一个魅力，但我无法从会话 bean 动态添加它们。我尝试过直接从会话 bean 输出：

<%= sessionBean.getTags() %>

并且

<% out.print(sessionBean.getTags()); %>

尝试创建一个接受字符串作为属性的自定义标记：

public class JSTLOut extends TagSupport {
   String value;
   public void setValue(String value) {
      this.value = value;
   }
   public int doStartTag() {
      try {
         JSPWriter out = pageContext.getOut();
         if (value != null) {
            out.print.(value);
         }
      catch(IOException ioe) {
         // TODO: handle
      }
      return(SKIP_BODY);
   }
}

我尝试使用 Eval taglib

这个 taglib 导致了 LinkageError，显然与 websphere 配合不好。有人能指出我正确的方向吗？

原文

I've got a servlet providing a JSP and I'm trying to output custom tags from a string from my session bean. The custom tags get printed out without being evaluated. If I add my custom tags to JSP it works like a charm but I cannot dynamically add them from the session bean.
I've tried the outputting straight from the session bean:

<%= sessionBean.getTags() %>

and

<% out.print(sessionBean.getTags()); %>

I've tried creating a custom tag that accepts a string as it's attribute:

public class JSTLOut extends TagSupport {
   String value;
   public void setValue(String value) {
      this.value = value;
   }
   public int doStartTag() {
      try {
         JSPWriter out = pageContext.getOut();
         if (value != null) {
            out.print.(value);
         }
      catch(IOException ioe) {
         // TODO: handle
      }
      return(SKIP_BODY);
   }
}

I've tried using Eval taglib

This taglib caused a LinkageError, obviously not playing nice with websphere. Could anyone point me in the right direction?

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