問題描述

private void validateXML(DOMSource source) throws Exception {
    URL schemaFile = new URL("http://www.csc.liv.ac.uk/~valli/modules.xsd");
    SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI);
    Schema schema = schemaFactory.newSchema(schemaFile);

    Validator validator = schema.newValidator();
    DOMResult result = new DOMResult();
    try {
        validator.validate(source, result); 
        System.out.println("is valid");
    } catch (SAXException e) {
        System.out.println("not valid because " + e.getLocalizedMessage());
    }
}

但這會返回一個錯誤:線程main"java.lang.IllegalArgumentException 中的異常:沒有實現由 http:///www.w3.org/2001/XMLSchema - 可以加載實例

But this returns an error saying: Exception in thread "main" java.lang.IllegalArgumentException: No SchemaFactory that implements the schema language specified by: http://www.w3.org/2001/XMLSchema -instance could be loaded

這是我的代碼問題還是實際 xsd 文件的問題?

Is this a problem with my code or with the actual xsd file?

推薦答案

這個錯誤意味著你安裝的Java沒有任何可以解析XMLSchema文件的類，所以不是schema或者你的代碼有問題.

That error means that your installed Java doesn't have any classes that can parse XMLSchema files, so it's not a problem with the schema or your code.

p>

我很確定最近的 JRE 默認有合適的類，所以你能給我們提供 java -version 的輸出嗎?

更新:

您使用了錯誤的 XMLContants 字符串.你想要:XMLConstants.W3C_XML_SCHEMA_NS_URI

You're using the wrong XMLContants string. You want: XMLConstants.W3C_XML_SCHEMA_NS_URI

這篇關于針對 XSD Schema 的 Java XML 驗證的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！