如何在 Java 中从 String 创建 XML 对象?

2022-01-10 00:00:00 xml xml-parsing java jdom

我正在尝试编写一个代码来帮助我创建一个 XML 对象.例如，我将一个字符串作为函数的输入，它会返回一个 XMLObject.

I am trying to write a code that helps me to create a XML object. For example, I will give a string as input to a function and it will return me a XMLObject.

XMLObject convertToXML(String s) {}

当我在网上搜索时，我通常会看到有关创建 XML 文档的示例.所以我看到的所有关于创建 XML 并写入文件并创建文件的事情.但我做过类似的事情:

When I was searching on the net, generally I saw examples about creating XML documents. So all the things I saw about creating an XML and write on to a file and create the file. But I have done something like that:

Document document = new Document();
Element child = new Element("snmp");
child.addContent(new Element("snmpType").setText("snmpget"));
child.addContent(new Element("IpAdress").setText("127.0.0.1"));
child.addContent(new Element("OID").setText("1.3.6.1.2.1.1.3.0"));
document.setContent(child);

您认为创建一个 XML 对象就足够了吗?你能帮我如何从 XML 中获取数据吗?例如，如何从该 XML 中获取 IpAdress?

Do you think it is enough to create an XML object? and also can you please help me how to get data from XML? For example, how can I get the IpAdressfrom that XML?

非常感谢大家

编辑 1: 实际上，现在我认为拥有一个像 base.xml 这样的文件对我来说可能会容易得多，我会将所有基本内容写入其中例如:

EDIT 1: Actually now I thought that maybe it would be much easier for me to have a file like base.xml, I will write all basic things into that for example:

<snmp>
<snmpType><snmpType>
<OID></OID>
</snmp>

然后使用这个文件创建一个 XML 对象.你怎么看?

and then use this file to create a XML object. What do you think about that?

推荐答案

如果您可以创建字符串 xml，您可以轻松地将其转换为 xml 文档对象，例如-

If you can create a string xml you can easily transform it to the xml document object e.g. - 

String xmlString = "<?xml version="1.0" encoding="utf-8"?><a><b></b><c></c></a>";  

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();  
DocumentBuilder builder;  
try {  
    builder = factory.newDocumentBuilder();  
    Document document = builder.parse(new InputSource(new StringReader(xmlString)));  
} catch (Exception e) {  
    e.printStackTrace();  
}

您可以使用文档对象和xml解析库或xpath来取回ip地址.

You can use the document object and xml parsing libraries or xpath to get back the ip address.

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