如何告诉 Xalan 转义 HTML 属性中的字符

问题描述

下面Java代码的结果是

The result of the Java code below is

<input value="<http://example.org/>">

我想要的是

<input value="&lt;http://example.org/&gt;">

代码是

Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
Element input = doc.createElement("input");
input.setAttribute("value", "<http://example.org/>");

Transformer xform = TransformerFactory.newInstance().newTransformer();
xform.setOutputProperty(OutputKeys.INDENT, "yes");
xform.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
xform.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
xform.setOutputProperty(OutputKeys.ENCODING, "utf-8");
xform.setOutputProperty(OutputKeys.METHOD, "html");
StringWriter writer = new StringWriter();
xform.transform(new DOMSource(input), new StreamResult(writer));
System.out.println(writer.toString());

xform 的实现是 com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl

The implementation of xform is com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl

Xalan 是否有任何设置可以逃避 <和 > 字符正确吗?它导致 ajax 调用的客户端出现问题.

Is there any setting for Xalan that will escape the < and > characters correctly? It is causing problems in client side of ajax calls.

推荐答案

Apache Commons 有一个 StringEscapeUtils.escapeXml() 和可用于转义 xml 的 .unescapeXml() 方法将其设置为属性之前的片段.

Apache Commons have a StringEscapeUtils.escapeXml() and a .unescapeXml() methods that you can use to escape the xml fragment before setting it to the attribute.

input.setAttribute("value", StringEscapeUtils.escapeXml("<http://example.org/>"));

希望有所帮助，祝您愉快！

Hope that help, enjoy!

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