如何从 XSD 生成 JAXB 类？

我在 XML 方面完全是个新手。我正在做一个 JavaEE 项目 REST 实现，我们返回了大量的 XML。因此，我们决定使用 JAXB。到目前为止，我们手动为 XML 编写了模型代码。

但是已经存在这些我们不知道如何编码的复杂结构。我们已经阅读了关于从 XSD 生成类的文章。我们确实有 XSD。

我的问题是:

1)我读过 XJC，在哪里可以找到它？

2.)我们必须安装整个 JAXB 吗? (那么我们到目前为止使用的是 JAXB 吗?)

310198 次浏览
小开

您可以从 < a href = “ http://JAXB.java.net/2.2.5/”rel = “ nofollow”> http://JAXB.java.net/2.2.5/下载 JAXB jar 文件 您不需要安装任何东西，只需调用 xjc 命令并使用类路径参数指向下载的 JAXBjar 文件。

小开

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

  • 你可以在这里找到更多关于 XJC 绑定编译器的信息，这是 jdk 安装程序: XJC: < a href = “ http://docs.oracle.com/javase/6/docs/technology/tools/share/XJC.html”rel = “ norefrer”> JavaTM Architecture for XML Binding-Binding Compiler

希望这个能帮上忙！

小开
最佳答案

从 Java SE 6开始，XJC 包含在 JDK 的 bin 目录中:

博客的内容如下:

用 JAXB 处理原子馈源 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。在这个示例中，我们将处理这个 blog 的 Atom 提要。

演示

在本例中，我们将使用 JAXB 将与此 blog 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

下面的模型是由模式到 Java 编译器(XJC)生成的。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>();
}

EntryType

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>();
}

FeedType

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>();
}

发电机类型

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>();
}

IconType

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>();
}

ID 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 = "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>();
}

LinkType

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>();
}

LogoType

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>();
}

个人类型

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>();
}

SourceType

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>();
}

UriType

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>();
}
小开

1)你可以使用标准的 java 工具 谢谢-([ your java home dir ] bin xjc.exe)。但你需要创造。蝙蝠(或。Sh)使用它的脚本。

例如 generate.bat:

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

例如 test-scheme. 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>

使用参数运行. bat 文件: generate.bat test-scheme. xsd-d [ your src dir ]

更多信息请使用这个文档 -http://docs.oracle.com/javaee/5/tutorial/doc/bnazg.html

还有这个 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。

小开
  1. 下载 http://java.net/downloads/jaxb-workshop/IDE%20plugins/org.jvnet.jaxbw.zip
  2. 解压缩压缩文件。
  3. 将 org.jvnet.jaxbw.eclipse _ 1.0.0文件夹放入. eclipseplugins 文件夹
  4. 重启日食。
  5. 右键单击 XSD 文件，您可以找到连接菜单。
小开

对于 Eclipse STS (至少3.5)，您不需要安装任何东西。你必须在下一步中指定包和位置，就是这样，你的类应该被生成。我想上面提到的所有解决方案都是有效的，但是这似乎是目前为止最简单的(对于 STS 用户)。

[更新] Eclipse STS 版本3.6(基于开普勒)提供了相同的功能。

blah

小开

在 Eclipse中，右键单击您想要获取的 xsd文件—— > Generate —— > Java... —— > Generator: “ Schema to JAXB Java Class”。

我刚刚面临同样的问题，我有一大堆 xsd文件，其中只有一个是 XML Root Element，它工作得很好，正如我在 Eclipse 中解释的那样

小开

Cxf 对这类东西提供了很好的支持

<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>
小开

在 intellij click. xsd 文件中 - > 网上服务 - > 从 Xml Schema JAXB 生成 Java 代码 然后给出包路径和包名 - > ok

注意，所需的插件是: JavaEE: Web 服务(JAX-WS)(绑定)

小开

您还可以使用 Jaxb2-maven-plugin插件从模式生成源代码:

        <plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>jaxb2-maven-plugin</artifactId>
<version>2.2</version>
<executions>
<execution>
<goals>
<goal>xjc</goal>
</goals>
</execution>
</executions>
<configuration>
<sources>
<source>src/main/resources/your_schema.xsd</source>
</sources>
<xjbSources>
<xjbSource>src/main/resources/bindings.xjb</xjbSource>
</xjbSources>
<packageName>some_package</packageName>
<outputDirectory>src/main/java</outputDirectory>
<clearOutputDir>false</clearOutputDir>
<generateEpisode>false</generateEpisode>
<noGeneratedHeaderComments>true</noGeneratedHeaderComments>
</configuration>
</plugin>

提交答案