java如何从XSD生成JAXB类？

Question

我对XML完全是个新手。我正在做一个JavaEE项目REST实现，我们返回了大量XML。有了这个，我们决定使用JAXB。到目前为止，我们为XML手动编写了模型

但是已经有了这些复杂的结构，我们不知道如何编码。我们已经读过关于从XSD生成类的内容。我们有一个XSD

我的问题是：

1.）我读过关于XJC的书，在哪里可以找到

2.）我们必须安装整个JAXB吗？（到目前为止我们使用了什么？这不是JAXB吗？）

Answer 1

cxf对这类东西有很好的支持

<plugin>
    <groupId>org.apache.cxf</groupId>
    <artifactId>cxf-xjc-plugin</artifactId>
    <version>2.3.0</version>
    <configuration>
      <extensions>
        <extension>org.apache.cxf.xjcplugins:cxf-xjc-dv:2.3.0</extension>
      </extensions>
    </configuration>
    <executions>
      <execution>
        <id>generate-sources-trans</id>
        <phase>generate-sources</phase>
        <goals>
          <goal>xsdtojava</goal>
        </goals>
        <configuration>
          <sourceRoot>${basedir}/src/main/java</sourceRoot>
          <xsdOptions>
            <xsdOption>
              <xsd>src/main/resources/xxx.xsd</xsd>
            </xsdOption>
          </xsdOptions>
        </configuration>
      </execution>
    </executions>
  </plugin>

Answer 2

对于EclipseST（至少3.5版）您不需要安装任何东西右键单击模式。xsd->；生成->；JAXB类您必须指定软件包&；在下一步中，仅此而已，应该生成您的类。我想上面提到的所有解决方案都有效，但这似乎是迄今为止最简单的（对于STS用户）

[更新]Eclipse STS 3.6版（基于开普勒）也有相同的功能

Answer 3

• 如果您正在使用Eclipse，还可以尝试JAXB Eclipse Plug-In

• 您可以在这里找到关于jdk安装附带的XJC绑定编译器的更多信息：XJC:Java™ Architecture for XML Binding -Binding Compiler

我希望这有帮助

Answer 4

XJC包含在JDK的bin目录中，从JavaSE6开始。有关示例，请参见：

• http://blog.bdoughan.com/2010/09/processing-atom-feeds-with-jaxb.html

博客内容如下：

使用JAXB处理Atom提要 Atom是一种表示web提要的XML格式。标准格式允许阅读器应用程序显示来自不同来源的提要。在这个例子中，我们将处理这个博客的Atom提要

演示

在本例中，我们将使用JAXB将与此博客对应的Atom XML提要转换为对象，然后再转换回XML

import java.io.InputStream;
import java.net.URL;
import javax.xml.bind.*;
import javax.xml.transform.stream.StreamSource;
import org.w3._2005.atom.FeedType;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance("org.w3._2005.atom");

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        URL url = new URL("http://bdoughan.blogspot.com/atom.xml");
        InputStream xml = url.openStream();
        JAXBElement<feedtype> feed = unmarshaller.unmarshal(new StreamSource(xml), FeedType.class);
        xml.close();

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

}

JAXB模型

以下模型由schema to Java编译器（XJC）生成。为了节省空间，我省略了get/set方法和注释

xjc -d generated http://www.kbcafe.com/rss/atom.xsd.xml

包裹信息

@XmlSchema(
        namespace = "http://www.w3.org/2005/Atom",
        elementFormDefault = XmlNsForm.QUALIFIED)
@XmlAccessorType(XmlAccessType.FIELD)
package org.w3._2005.atom;

import javax.xml.bind.annotation.*;

类别类型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "categoryType")
public class CategoryType {
    @XmlAttribute(required = true)
    protected String term;

    @XmlAttribute
    @XmlSchemaType(name = "anyURI")
    protected String scheme;

    @XmlAttribute
    protected String label;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

内容类型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "contentType", propOrder = {"content"})
public class ContentType {
    @XmlMixed
    @XmlAnyElement(lax = true)
    protected List<Object> content;

    @XmlAttribute
    protected String type;

    @XmlAttribute
    @XmlSchemaType(name = "anyURI")
    protected String src;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

日期时间类型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.datatype.XMLGregorianCalendar;
import javax.xml.namespace.QName;

@XmlType(name = "dateTimeType", propOrder = {"value"})
public class DateTimeType {
    @XmlValue
    @XmlSchemaType(name = "dateTime")
    protected XMLGregorianCalendar value;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

入口类型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "entryType", propOrder = {"authorOrCategoryOrContent"})
public class EntryType {
    @XmlElementRefs({
        @XmlElementRef(name = "id", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "rights", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "summary", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "title", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "author", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "source", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "updated", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "category", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "content", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "published", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "contributor", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "link", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class)
    })
    @XmlAnyElement(lax = true)
    protected List<Object> authorOrCategoryOrContent;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

饲料型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "feedType", propOrder = {"authorOrCategoryOrContributor"})
public class FeedType {
    @XmlElementRefs({
        @XmlElementRef(name = "link", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "updated", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "category", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "rights", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "contributor", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "title", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "id", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "generator", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "icon", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "subtitle", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "author", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "entry", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "logo", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class)
    })
    @XmlAnyElement(lax = true)
    protected List<Object> authorOrCategoryOrContributor;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

生成器类型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "generatorType", propOrder = {"value"})
public class GeneratorType {
    @XmlValue
    protected String value;

    @XmlAttribute
    @XmlSchemaType(name = "anyURI")
    protected String uri;

    @XmlAttribute
    protected String version;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

iCountype

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "iconType", propOrder = {"value"})
public class IconType {
    @XmlValue
    @XmlSchemaType(name = "anyURI")
    protected String value;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

IdType

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "idType", propOrder = {"value"})
public class IdType {
    @XmlValue
    @XmlSchemaType(name = "anyURI")
    protected String value;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

链接类型

package org.w3._2005.atom;

import java.math.BigInteger;
import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "linkType", propOrder = {"content"})
public class LinkType {
    @XmlValue
    protected String content;

    @XmlAttribute(required = true)
    @XmlSchemaType(name = "anyURI")
    protected String href;

    @XmlAttribute
    protected String rel;

    @XmlAttribute
    protected String type;

    @XmlAttribute
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "NMTOKEN")
    protected String hreflang;

    @XmlAttribute
    protected String title;

    @XmlAttribute
    @XmlSchemaType(name = "positiveInteger")
    protected BigInteger length;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

标识

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "logoType", propOrder = {"value"})
public class LogoType {
    @XmlValue
    @XmlSchemaType(name = "anyURI")
    protected String value;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

人格类型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "personType", propOrder = {"nameOrUriOrEmail"})
public class PersonType {
    @XmlElementRefs({
        @XmlElementRef(name = "email", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "name", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "uri", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class)
    })
    @XmlAnyElement(lax = true)
    protected List<Object> nameOrUriOrEmail;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

源类型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "sourceType", propOrder = {"authorOrCategoryOrContributor"})
public class SourceType {
    @XmlElementRefs({
        @XmlElementRef(name = "updated", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "category", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "subtitle", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "logo", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "generator", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "icon", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "title", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "id", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "author", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "contributor", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "link", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class),
        @XmlElementRef(name = "rights", namespace = "http://www.w3.org/2005/Atom", type = JAXBElement.class)
    })
    @XmlAnyElement(lax = true)
    protected List<Object> authorOrCategoryOrContributor;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

文本类型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "textType", propOrder = {"content"})
public class TextType {
    @XmlMixed
    @XmlAnyElement(lax = true)
    protected List<Object> content;

    @XmlAttribute
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    protected String type;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

尿酸型

package org.w3._2005.atom;

import java.util.*;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.*;
import javax.xml.namespace.QName;

@XmlType(name = "uriType", propOrder = {"value"})
public class UriType {
    @XmlValue
    @XmlSchemaType(name = "anyURI")
    protected String value;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlSchemaType(name = "anyURI")
    protected String base;

    @XmlAttribute(namespace = "http://www.w3.org/XML/1998/namespace")
    @XmlJavaTypeAdapter(CollapsedStringAdapter.class)
    @XmlSchemaType(name = "language")
    protected String lang;

    @XmlAnyAttribute
    private Map<QName, String> otherAttributes = new HashMap<QName, String>();
}

Answer 5

1）您可以使用标准java实用工具xjc-（[your java home dir]\bin\xjc.exe）。但你需要创造。使用它的bat（或.sh）脚本

例如生成。蝙蝠：

[your java home dir]\bin\xjc.exe %1 %2 %3

例如，测试方案。xsd:

<?xml version="1.0"?>
<xs:schema version="1.0"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           elementFormDefault="qualified" 
           targetNamespace="http://myprojects.net/xsd/TestScheme"
           xmlns="http://myprojects.net/xsd/TestScheme">
    <xs:element name="employee" type="PersonInfoType"/>

    <xs:complexType name="PersonInfoType">
        <xs:sequence>
            <xs:element name="firstname" type="xs:string"/>
            <xs:element name="lastname" type="xs:string"/>
        </xs:sequence>
    </xs:complexType>
</xs:schema>

快跑。带参数的bat文件：生成。bat测试方案。xsd-d[你的src目录]

有关更多信息，请使用本文档-http://docs.oracle.com/javaee/5/tutorial/doc/bnazg.html

而这个http://docs.oracle.com/javase/6/docs/technotes/tools/share/xjc.html

2）默认情况下，JAXB（xjc实用程序）与JDK6一起安装