从蚂蚁JAXB类文件生成XML模式 [英] Generating XML Schema from JAXB class files in Ant

问题描述

是否有可能使用 shemagen Ant任务来生成的类文件，而不是从源XSD架构？

Is it possible to use the shemagen ant Task to generate an xsd schema from class files instead of from source?

推荐答案

您也许可以写的东西很容易，然后从蚂蚁调用它：

You could probably write something fairly easily, and then call it from Ant:

import java.io.File;
import java.io.IOException;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.SchemaOutputResolver;
import javax.xml.transform.Result;
import javax.xml.transform.stream.StreamResult;

public class SchemaGenerator {

    public static void main(String[] args) throws Exception {
        String contextPath = args[0];
        String outputDir = args[1];
        JAXBContext jc = JAXBContext.newInstance(contextPath);
        jc.generateSchema(new MySchemaOutputResolver(schemaFileName));
    }

    private static class MySchemaOutputResolver extends SchemaOutputResolver {

        private String outputDir;

        public MySchemaOutputResolver(String outputDir) {
            this.outputDir = outputDir;
        }

        public Result createOutput(String namespaceURI, String suggestedFileName) throws IOException {
            File file = new File(outputDir + "/" + suggestedFileName);
            StreamResult result = new StreamResult(file);
            result.setSystemId(file.toURI().toURL().toString());
            return result;
        }

    }   

}

在您的上下文路径，你会需要一个jaxb.in​​dex文件，将包含在你的JAXBContext类的列表。或者你可以通过类名的SchemaGenerator类，并通过一个类加载器加载它们。

In your context path you would need a jaxb.index file with a list of classes to be included in your JAXBContext. Or you could pass the class names to the SchemaGenerator class and load them via a ClassLoader.

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