用Java合并两个XML文件-MergeTwoXMLFilesinJava

6  

I use XSLT to merge XML files. It allows me to adjust the merge operation to just slam the content together or to merge at an specific level. It is a little more work (and XSLT syntax is kind of special) but super flexible. A few things you need here

我使用XSLT来合并XML文件。它允许我调整合并操作，只是将内容一起猛击或在特定级别合并。这是一个更多的工作（和XSLT语法是一种特殊的），但超级灵活。这里有一些你需要的东西

a) Include an additional file b) Copy the original file 1:1 c) Design your merge point with or without duplication avoidance

a）包含一个附加文件b）复制原始文件1：1 c）设置合并点，有或没有避免重复

a) In the beginning I have

a）一开始我有

yoursecondfile.xml

this allows to point to the second file using $mDoc

这允许使用$ mDoc指向第二个文件

b) The instructions to copy a source tree 1:1 are 2 templates:

b）复制源树1：1的说明是2个模板：

With nothing else you get a 1:1 copy of your first source file. Works with any type of XML. The merging part is file specific. Let's presume you have event elements with an event ID attribute. You do not want duplicate IDs. The template would look like this:

没有其他任何东西你得到你的第一个源文件的1：1副本。适用于任何类型的XML。合并部分是特定于文件的。让我们假设你有一个带有事件ID属性的事件元素。您不需要重复的ID。模板看起来像这样：

Of course you can compare other things like tag names etc. Also it is up to you how deep the merge happens. If you don't have a key to compare, the construct becomes easier e.g. for log:

当然，您可以比较标签名称等其他内容。此外，合并发生的深度取决于您。如果您没有要比较的密钥，则构造变得更容易，例如对于日志：

To run XSLT in Java use this:

要在Java中运行XSLT，请使用以下命令：

    Source xmlSource = new StreamSource(xmlFile);
    Source xsltSource = new StreamSource(xsltFile);
    Result xmlResult = new StreamResult(resultFile);
    TransformerFactory transFact = TransformerFactory.newInstance();
    Transformer trans = transFact.newTransformer(xsltSource);
    // Load Parameters if we have any
    if (ParameterMap != null) {
       for (Entry curParam : ParameterMap.entrySet()) {
            trans.setParameter(curParam.getKey(), curParam.getValue());
       }
    }
    trans.transform(xmlSource, xmlResult);

or you download the Saxon SAX Parser and do it from the command line (Linux shell example):

或者您下载Saxon SAX Parser并从命令行执行（Linux shell示例）：

#!/bin/bash
notify-send -t 500 -u low -i gtk-dialog-info "Transforming $1 with $2 into $3 ..."
# That's actually the only relevant line below
java -cp saxon9he.jar net.sf.saxon.Transform -t -s:$1 -xsl:$2 -o:$3
notify-send -t 1000 -u low -i gtk-dialog-info "Extraction into $3 done!"

YMMV

因人而异

3  

Thanks to everyone for their suggestions unfortunately none of the methods suggested turned out to be suitable in the end, as I needed to have rules for the way in which different nodes of the structure where mereged.

感谢大家的建议，遗憾的是，最终没有一种方法被证明是合适的，因为我需要对结构中不同节点的方式有规则。

So what I did was take the DTD relating to the XML files I was merging and from that create a number of classes reflecting the structure. From this I used XStream to unserialize the XML file back into classes.

所以我所做的是获取与我正在合并的XML文件相关的DTD，并创建了许多反映结构的类。从这里我使用XStream将XML文件反序列化为类。

This way I annotated my classes making it a process of using a combination of the rules assigned with annotations and some reflection in order to merge the Objects as opposed to merging the actual XML structure.

这样我就可以对我的类进行注释，使其成为使用注释和注释分配的规则组合的过程，以便合并对象而不是合并实际的XML结构。

If anyone is interested in the code which in this case merges Nmap XML files please see http://fluxnetworks.co.uk/NmapXMLMerge.tar.gz the codes not perfect and I will admit not massively flexible but it definitely works. I'm planning to reimplement the system with it parsing the DTD automatically when I have some free time.

如果有人对代码感兴趣，在这种情况下合并Nmap XML文件，请参阅http://fluxnetworks.co.uk/NmapXMLMerge.tar.gz代码不完美，我承认不是大规模灵活但它绝对有效。我打算重新实现系统，因为我有空闲时间自动解析DTD。

2  

This is how it should look like using XML Merge:

这就是使用XML Merge的样子：

action.default=MERGE

xpath.info=/run/info
action.info=PRESERVE

xpath.result=/run/host/results/result
action.result=MERGE
matcher.result=ID

You have to set ID matcher for //result node and set PRESERVE action for //info node. Also beware that .properties XML Merge uses are case sensitive - you have to use "xpath" not "XPath" in your .properties.

您必须为//结果节点设置ID匹配器，并为// info节点设置PRESERVE操作。还要注意.properties XML Merge使用区分大小写 - 您必须在.properties中使用“xpath”而不是“XPath”。

Don't forget to define -config parameter like this:

不要忘记定义-config参数，如下所示：

java -cp lib\xmlmerge-full.jar; ch.elca.el4j.services.xmlmerge.tool.XmlMergeTool -config xmlmerge.properties example1.xml example2.xml 

2  

It might help if you were explicit about the result that you're interested in achieving. Is this what you're asking for?

如果您明确表示您有兴趣实现的结果，这可能会有所帮助。这是你要求的吗？

Doc A:

文件A：