blocks|key|2299499|text|试试Castor吧。它能够从DTD+(可能也从XSD+)生成java代码。因此，您可以在运行时生成代码，然后编译它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2299500|顺便说一句，再次检查JAXB。我相信它也能做到这一点。|2299501|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Try Castor. It is able to generate java code from DTD (and probably from XSD too). So, you can generate the code at runtime and then compile it.

BTW check JAXB again. I believe that it can do the same.

blocks|key|1465608|text|尝试使用XSLT。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1465609|您可以将输入的XML文件转换为另一个XML文件，该文件将作为Jaxb/XmlBeans/...的输入。来填充您的bean。|1465610|XSL文件将是描述映射的“运行时”配置。|1465611|输入XML+-(XSLT)->+Bean+XML+-(Jaxb)->+Java+bean|1465612|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Try XSLT.

You can take you input XML file and transform it in another XML file that will be the input for Jaxb/XmlBeans/... to populate your bean.

The XSL file will be the "runtime" configuration that will describe the mapping.

Input XML ---(XSLT)---> Bean XML ---(Jaxb)---> Java bean

blocks|key|231709|text|Hibernate实际上对XML映射有一些支持。更多信息请参见the+doc。我在一段时间前做了一个PoC，发现文档中缺少它。我不知道如何正确使用名称空间。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|231710|我们最终使用了罗马，因为我们只需要解析/生成具有自定义名称空间的Atom提要。但我不认为罗马能解决你的问题。映射是在Java代码中完成的，并且在解析/生成RSS+/+Atom时受到限制。|231711|祝你好运！如果你最终使用Hibernate，我很想知道它是如何为你工作的！|231712|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.jboss.org/hibernate/core/3.3/reference/en/html/xml.html^0|V|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

Hibernate actually has some support for XML mapping. See <a href="http://docs.jboss.org/hibernate/core/3.3/reference/en/html/xml.html" rel="nofollow">the doc</a> for more infos. I did a PoC some time ago, and found it a bit lacking on the documentation. I didnt find how to use namespaces properly.

We finally used Rome as we only needed to parse / generate Atom feeds with custom namespaces. But I dont think Rome will solve your problem. The mappings are done in Java code, and it is restricted in parsing / generating RSS / Atom ...

Good luck ! And if you end up using Hibernate, I'd love to know how it is working for you !

blocks|key|1465651|text|Apache+Commons+Digester可能是一个值得考虑的有趣工具。它做了您需要做的事情，例如，获取XML并将其转换为Java+bean。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1465652|entityMap|0|LINK|mutability|MUTABLE|url|http://commons.apache.org/digester/^0|0|N|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="http://commons.apache.org/digester/" rel="nofollow">Apache Commons Digester</a> should probably be a interesting tool to consider. It does what you need, i.e. take a XML and transform it into a Java bean.

blocks|key|2299671|text|EclipseLink+JAXB+(MOXy)+(我是技术负责人)有一个XML映射文件。对于您的示例，映射文件为：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2299672|binding.xml|style|BOLD|2299673|<xml-bindings
++++xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
++++package-name="blog.bindingfile">
++++<java-types>
++++++++<java-type+name="Customer">
++++++++++++<xml-root-element/>
++++++++++++<xml-type+prop-order="person+street+city+state+zip+phone"/>
++++++++</java-type>
++++++++<java-type+name="Person">
++++++++++++<xml-type+prop-order="customerNumber+firstName+lastName"/>
++++++++++++<java-attributes>
++++++++++++++++<xml-element+java-attribute="customerNumber"+name="cust-num"/>
++++++++++++++++<xml-element+java-attribute="firstName"+name="first-name"/>
++++++++++++++++<xml-element+java-attribute="lastName"+name="last-name"/>
++++++++++++</java-attributes>
++++++++</java-type>
++++</java-types>
</xml-bindings>|code-block|syntax|javascript|2299674|域模型|2299675|这将映射以下类：|2299676|package+blog.bindingfile;

public+class+Customer+{

++++public+Person+person;
++++public+String+street;
++++public+String+city;
++++public+String+state;
++++public+Integer+zip;
++++public+String+phone;

}

package+blog.bindingfile;

public+class+Person+{

++++public+int+customerNumber;
++++public+String+firstName;
++++public+String+lastName;

}|2299677|XML|2299678|从以下XML到/从以下XML：|2299679|<?xml+version="1.0"+encoding="UTF-8"?>
<customer>
++++<person>
++++++++<cust-num>123456789</cust-num>
++++++++<first-name>John</first-name>
++++++++<last-name>Smith</last-name>
++++</person>
++++<street>12345+Happy+Lane</street>
++++<city>Plunk</city>
++++<state>WA</state>
++++<zip>98059</zip>
++++<phone>888.555.1234</phone>
</customer>|2299680|演示代码|2299681|如下所示：|2299682|package+blog.bindingfile;

import+java.io.File;
import+java.util.HashMap;
import+java.util.Map;

import+javax.xml.bind.JAXBContext;
import+javax.xml.bind.Marshaller;
import+javax.xml.bind.Unmarshaller;

import+org.eclipse.persistence.jaxb.JAXBContextFactory;

public+class+Demo+{

++++public+static+void+main(String[]+args)+throws+Exception+{
++++++++Map<String,+Object>+properties+=+new+HashMap<String,+Object>(1);
++++++++properties.put(JAXBContextFactory.ECLIPSELINK_OXM_XML_KEY,+new+File("binding.xml"));
++++++++JAXBContext+jc+=+JAXBContext.newInstance("blog.bindingfile",+Customer.class.getClassLoader()+,+properties);

++++++++Unmarshaller+unmarshaller+=+jc.createUnmarshaller();
++++++++Customer+customer+=+(Customer)+unmarshaller.unmarshal(new+File("input.xml"));

++++++++Marshaller+marshaller+=+jc.createMarshaller();
++++++++marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,+true);
++++++++marshaller.marshal(customer,+System.out);
++++}

}|2299683|jaxb.properties|2299684|要使用MOXy作为您的JAXB实现，您需要在您的模型类中包含一个包含以下条目的jaxb.properties文件：|2299685|javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory|2299686|便笺|2299687|此示例使用即将发布的EclipseLink+2.2版本中提供的简化引导。有关使用EclipseLink+2.1的示例，请参阅：|2299688|2299689|http://wiki.eclipse.org/EclipseLink/Examples/MOXy/EclipseLink-OXM.XML|unordered-list-item|2299690|2299691|entityMap|0|LINK|mutability|MUTABLE|url|http://www.eclipse.org/eclipselink/moxy.php|1^0|0|N|0|0|0|B|0|0|0|3|0|0|0|0|3|0|0|0|0|4|0|0|0|0|F|0|0|0|0|2|0|0|0|0|1X|1|0|0^^$0|@$1|2|3|4|5|6|7|1S|8|@]|9|@$A|1T|B|1U|1|1V]]|C|$]]|$1|D|3|E|5|6|7|1W|8|@$A|1X|B|1Y|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|1Z|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|20|8|@$A|21|B|22|F|G]]|9|@]|C|$]]|$1|O|3|P|5|6|7|23|8|@]|9|@]|C|$]]|$1|Q|3|R|5|J|7|24|8|@]|9|@]|C|$K|L]]|$1|S|3|T|5|6|7|25|8|@$A|26|B|27|F|G]]|9|@]|C|$]]|$1|U|3|V|5|6|7|28|8|@]|9|@]|C|$]]|$1|W|3|X|5|J|7|29|8|@]|9|@]|C|$K|L]]|$1|Y|3|Z|5|6|7|2A|8|@$A|2B|B|2C|F|G]]|9|@]|C|$]]|$1|10|3|11|5|6|7|2D|8|@]|9|@]|C|$]]|$1|12|3|13|5|J|7|2E|8|@]|9|@]|C|$K|L]]|$1|14|3|15|5|6|7|2F|8|@$A|2G|B|2H|F|G]]|9|@]|C|$]]|$1|16|3|17|5|6|7|2I|8|@]|9|@]|C|$]]|$1|18|3|19|5|J|7|2J|8|@]|9|@]|C|$K|L]]|$1|1A|3|1B|5|6|7|2K|8|@$A|2L|B|2M|F|G]]|9|@]|C|$]]|$1|1C|3|1D|5|6|7|2N|8|@]|9|@]|C|$]]|$1|1E|3|-4|5|6|7|2O|8|@]|9|@]|C|$]]|$1|1F|3|1G|5|1H|7|2P|8|@]|9|@$A|2Q|B|2R|1|2S]]|C|$]]|$1|1I|3|-4|5|6|7|2T|8|@]|9|@]|C|$]]|$1|1J|3|-4|5|6|7|2U|8|@]|9|@]|C|$]]]|1K|$1L|$5|1M|1N|1O|C|$1P|1Q]]|1R|$5|1M|1N|1O|C|$1P|1G]]]]

<a href="http://www.eclipse.org/eclipselink/moxy.php" rel="nofollow">EclipseLink JAXB (MOXy)</a> (I'm the tech lead) has an XML mapping file. For your example the mapping file would be:

binding.xml

<pre><code>&lt;xml-bindings
 xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
 package-name="blog.bindingfile"&gt;
 &lt;java-types&gt;
 &lt;java-type name="Customer"&gt;
 &lt;xml-root-element/&gt;
 &lt;xml-type prop-order="person street city state zip phone"/&gt;
 &lt;/java-type&gt;
 &lt;java-type name="Person"&gt;
 &lt;xml-type prop-order="customerNumber firstName lastName"/&gt;
 &lt;java-attributes&gt;
 &lt;xml-element java-attribute="customerNumber" name="cust-num"/&gt;
 &lt;xml-element java-attribute="firstName" name="first-name"/&gt;
 &lt;xml-element java-attribute="lastName" name="last-name"/&gt;
 &lt;/java-attributes&gt;
 &lt;/java-type&gt;
 &lt;/java-types&gt;
&lt;/xml-bindings&gt;
</code></pre>

Domain Model

This would map the following classes:

<pre><code>package blog.bindingfile;

public class Customer {

 public Person person;
 public String street;
 public String city;
 public String state;
 public Integer zip;
 public String phone;

}

package blog.bindingfile;

public class Person {

 public int customerNumber;
 public String firstName;
 public String lastName;

}
</code></pre>

XML

To/from the following XML:

<pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;customer&gt;
 &lt;person&gt;
 &lt;cust-num&gt;123456789&lt;/cust-num&gt;
 &lt;first-name&gt;John&lt;/first-name&gt;
 &lt;last-name&gt;Smith&lt;/last-name&gt;
 &lt;/person&gt;
 &lt;street&gt;12345 Happy Lane&lt;/street&gt;
 &lt;city&gt;Plunk&lt;/city&gt;
 &lt;state&gt;WA&lt;/state&gt;
 &lt;zip&gt;98059&lt;/zip&gt;
 &lt;phone&gt;888.555.1234&lt;/phone&gt;
&lt;/customer&gt;
</code></pre>

Demo Code

As demonstrated by:

<pre><code>package blog.bindingfile;

import java.io.File;
import java.util.HashMap;
import java.util.Map;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

import org.eclipse.persistence.jaxb.JAXBContextFactory;

public class Demo {

 public static void main(String[] args) throws Exception {
 Map&lt;String, Object&gt; properties = new HashMap&lt;String, Object&gt;(1);
 properties.put(JAXBContextFactory.ECLIPSELINK_OXM_XML_KEY, new File("binding.xml"));
 JAXBContext jc = JAXBContext.newInstance("blog.bindingfile", Customer.class.getClassLoader() , properties);

 Unmarshaller unmarshaller = jc.createUnmarshaller();
 Customer customer = (Customer) unmarshaller.unmarshal(new File("input.xml"));

 Marshaller marshaller = jc.createMarshaller();
 marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
 marshaller.marshal(customer, System.out);
 }

}
</code></pre>

jaxb.properties

To use MOXy as your JAXB implementation you need to include a jaxb.properties file with your model classes with the following entry:

<pre><code>javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory
</code></pre>

Note

This example uses the simplified bootstrapping available in the upcoming EclipseLink 2.2 release. For an example using EclipseLink 2.1 see:

<ul>
<li><a href="http://wiki.eclipse.org/EclipseLink/Examples/MOXy/EclipseLink-OXM.XML" rel="nofollow">http://wiki.eclipse.org/EclipseLink/Examples/MOXy/EclipseLink-OXM.XML</a></li>
</ul>

I am trying to find a library that allows me to place the content of an XML into a JavaBean (something like Digester, Jaxb, JIXB etc) but I need it to be runtime (not at compile time, or by byte code generation) and use a mapping file of some sort.

The idea will be something like Hibernate's HBM mapping files, a way to specify which XML element goes into which Java property. I am currently using Digester but I want something simpler for its rules file. 

This should also work on a 1.4 JDK so annotations won't really do (but I will consider such responses just for completeness's sake).

To resume, I need a runtime tool that does XML to Java based on a XML descriptor of some sort, something like this (taken from JIXB) but at runtime (i.e. pass it the XML, the Java class to output object and the mapping descriptor):

<img src="https://i.stack.imgur.com/XMYEC.gif" alt="alt text">

Do you know of such a library?

Thank you!

XML to Java mapping tool - with mapping descriptor

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试寻找一个库，它允许我将XML的内容放入JavaBean (如Digester、Jaxb、JIXB等)，但我需要它是运行时的(而不是在编译时，也不是通过字节码生成)，并使用某种映射文件。这个想法类似于Hibernate的HBM映射文件，是一种指定哪个XML元素进入哪个Java属性的方法。我目前正在使用Digester，但我希望它的规则文件更简单。这也应该适用于1.4JDK，因此注释不会真正

问XML到Java的映射工具-带有映射描述符
EN

回答 5

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