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Asked: 2026-05-30T09:13:50+00:00

I want to transform an XML file with javax.xml.transform.Transformer , but my web access

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I want to transform an XML file with javax.xml.transform.Transformer, but my web access passes through a proxy.

I’ve tried using a new URIResolver with the transformer, but that didn’t work. How can I instruct the transformer to use the proxy?

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  1. Editorial Team

    For general network access from the JDK, one option is to pass JDK args at startup.

    Something like:

    java -Dhttp.proxyHost=myproxy.com -Dhttp.proxyPort=8080 ... MyTransformerClass

    Often a better solution is set the option programatically in your application, using values you’ve read from your config file.

    Something like:

    System.setProperty("http.proxyHost", myConfig.getProxyHost());
System.setProperty("http.proxyPort", myConfig.getProxyPort());

    See http://docs.oracle.com/javase/6/docs/technotes/guides/net/proxies.html for all the options

    However, in the specific example of XML processing where you need to resolve XSD, DTD etc. It’s almost always better to have a local copy of the resource as you’ve tried and specify a javax.xml.stream.XMLResolver to your parser to load the local copy rather than the remote.

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