如何使用gradle、jaxb和xjc从xsd生成jaxb类，类应该具有XmlRootElement

Question

我们试图使用gradle、xsd和xjc生成JAXB类，JAXB类应该具有XmlRootElement注释，以便可以将其作为web服务响应公开。我们正在跟踪这个链接http://azagorneanu.blogspot.com/2011/09/configure-maven-to-generate-classes.html，这很有帮助，但我们无法找到一个只有gradle的特定示例。所以我们想出了一些我们将分享的答案。

Answer 1

我的版本使用gradle本地特性来生成jaxbclass。

或者，如果您的模式依赖于外部xsd，请使用“绿洲目录”技术在本地解析外部XSD。在这种情况下，还可以禁用XML模式验证以防止验证错误。

或者，您可以使用自定义jaxb绑定来调整您的jaxbclass。（Jaxb-bindings.xjb）

基本上是一个gradle自定义任务，它调用JavaVM中可用的XJCTask ant任务，在我的示例中，库来自Java8。任务名称是"GenerateSSource"，需要根据您的模式位置进行调整。

configurations {
    jaxb // Only for generation purpose
}

dependencies {
    jaxb  'javax.xml.bind:jaxb-api:2.2.11' 
    jaxb  'com.sun.xml.bind:jaxb-xjc:2.2.11'    
    jaxb  'com.sun.xml.bind:jaxb-impl:2.2.11'
    jaxb  'com.sun.xml.bind:jaxb-osgi:2.2.11'
}

task generateSources() {
    doLast {
        def jaxbTargetDir = file("$buildDir/generated/src/main/java")

        if (!jaxbTargetDir.exists()) {
            jaxbTargetDir.mkdirs()
        }

        ant.taskdef(name: 'xjc', classname: 'com.sun.tools.xjc.XJCTask', classpath: configurations.jaxb.asPath)

        ant.xjc(
                destdir: "${jaxbTargetDir}",
                schema: "${projectDir}/src/main/resources/MySchema.xsd",
                binding: "${projectDir}/src/main/resources/jaxb-bindings.xjb",
                catalog: "${projectDir}/src/main/resources/catalog.xml",
                removeOldOutput: 'yes', extension: 'true'
        )
                {
                    arg(line: '-nv -disableXmlSecurity')
                }
    }
}

如果需要目录，请创建一个文件“catalog.xml”，该文件可能如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE catalog
    PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN"
           "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
    <system systemId="http://www.w3.org/TR/2002/REC-xmlenc-core-20021210/xenc-schema.xsd" uri="xenc-schema.xsd" />
    <system systemId="http://www.w3.org/TR/xmlenc-core/xenc-schema.xsd" uri="xenc-schema.xsd" />
    <system systemId="http://www.w3.org/TR/2002/REC-xmldsig-core-20020212/xmldsig-core-schema.xsd" uri="xmldsig-core-schema.xsd" />
</catalog>

对于jax绑定

<?xml version="1.0" encoding="UTF-8"?>
<bindings xmlns="http://java.sun.com/xml/ns/jaxb" version="2.1"
    xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc" xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <globalBindings>
        <xjc:javaType
            adapter="org.gazpachoquest.sample.JodaLocalDateTimeConverter"
            name="org.joda.time.LocalDateTime" xmlType="xs:dateTime" />
    </globalBindings>
</bindings>

如果除了jaxb生成之外，还需要包含这些类来构建。您需要调整渐变源布局和依赖项。

apply plugin: 'java'

def generatedSourcesOutput = "$buildDir/generated/main/java"

sourceSets {
    main {
        java.srcDirs "$generatedSourcesOutput"
    }
}

configurations {
    jaxb
}

dependencies {
    jaxb  'javax.xml.bind:jaxb-api:2.2.11' 
    jaxb  'com.sun.xml.bind:jaxb-xjc:2.2.11'    
    jaxb  'com.sun.xml.bind:jaxb-impl:2.2.11'
    jaxb  'com.sun.xml.bind:jaxb-osgi:2.2.11'

    compile 'com.sun.xml.bind:jaxb-xjc:2.2.11'
    compile 'com.sun.xml.bind:jaxb-impl:2.2.11'
    compile 'javax.xml.bind:jaxb-api:2.2.11'
}

compileJava {
    dependsOn generateSources
}

这就是全部！

Answer 2

group 'com.example'
version '1.0-SNAPSHOT'

apply plugin: 'java'

sourceCompatibility = 1.8
targetCompatibility = 1.8


repositories {
    mavenCentral()
}

project.ext {
    jaxbTargetDir = file("src/generated/java")

}


configurations {
    xsd2java
}

dependencies {
    xsd2java "com.sun.xml.bind:jaxb-xjc:2.2.6"
    xsd2java "com.sun.xml.bind:jaxb-impl:2.2.6"
}

task xsd2java() {

    doLast {
        jaxbTargetDir.mkdirs()

        ant.taskdef(name: 'xjc', classname: 'com.sun.tools.xjc.XJCTask', classpath: configurations.xsd2java.asPath)
        ant.jaxbTargetDir = jaxbTargetDir


        ant.xjc(
                destdir: '${jaxbTargetDir}',
                package: 'com.example.request',
                schema: 'src/main/resources/XMLreq.xsd'
        )

        ant.xjc(
                destdir: '${jaxbTargetDir}',
                package: 'com.example.response',
                schema: 'src/main/resources/XMLres.xsd'
        )

    }
}
compileJava.dependsOn xsd2java

Answer 3

build.gradle应该是下面的样子

    buildscript {
    repositories {
    mavenCentral()
        jcenter()
    }
    dependencies {
        classpath "net.saliman:gradle-cobertura-plugin:2.2.4"
        classpath 'com.github.jacobono:gradle-jaxb-plugin:1.3.5'

    }
}
apply plugin: 'com.github.jacobono.jaxb'
dependencies {
    jaxb 'com.sun.xml.bind:jaxb-xjc:2.2.7'
    jaxb "org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.6.5"
    jaxb "org.jvnet.jaxb2_commons:jaxb2-basics:0.6.4"
    jaxb "org.jvnet.jaxb2_commons:jaxb2-basics-annotate:0.6.4"
}
configurations {
    jaxb
}
task jaxb(){
    description 'Converts xsds to classes'
    def jaxbTargetDir = file("generated")
    doLast {
    jaxbTargetDir.mkdirs()
    ant.taskdef(name: 'xjc', classname: 'org.jvnet.jaxb2_commons.xjc.XJC2Task', classpath: configurations.jaxb.asPath)
    ant.jaxbTargetDir = jaxbTargetDir 
    ant.xjc(destdir: '${jaxbTargetDir}', package: 'com.sample.jaxbclasses', schema:'generated/schema.xsd', binding:'generated/binding.xjb', extension:'true'){
        arg(value: "-Xannotate")
        }
    }
}

schema.xsd

    <xs:element name="user" type="user" />
    <xs:element name="userList" type="userList" />

    <xs:complexType name="user">
        <xs:all>
            <xs:element name="id" type="xs:long" minOccurs="0" />
            <xs:element name="name" type="xs:string" />
            <xs:element name="registrationDate" type="xs:dateTime" />
        </xs:all>
    </xs:complexType>

    <xs:complexType name="userList">
        <xs:sequence>
            <xs:element name="user" type="user" minOccurs="0" maxOccurs="unbounded" />
        </xs:sequence>
    </xs:complexType>

</xs:schema>

结合xjb

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<jaxb:bindings xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:annox="http://annox.dev.java.net" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/jaxb http://java.sun.com/xml/ns/jaxb/bindingschema_2_0.xsd"
    version="2.1">
    <jaxb:globalBindings>
        <!-- Use java.util.Calendar instead of javax.xml.datatype.XMLGregorianCalendar for xs:dateTime -->
        <jaxb:javaType name="java.util.Calendar" xmlType="xs:dateTime"
                parseMethod="javax.xml.bind.DatatypeConverter.parseDateTime" 
                printMethod="javax.xml.bind.DatatypeConverter.printDateTime" />

        <!-- Force all classes implements Serializable -->
        <xjc:serializable uid="1" />
    </jaxb:globalBindings>

    <!-- Annotate the following classes with XmlRootElement -->
    <jaxb:bindings schemaLocation="schema.xsd" node="/xs:schema">
        <jaxb:bindings node="xs:complexType[@name='user']">
            <annox:annotate>
                <annox:annotate annox:class="javax.xml.bind.annotation.XmlRootElement" name="user" />
            </annox:annotate>
        </jaxb:bindings>
        <jaxb:bindings node="xs:complexType[@name='userList']">
            <annox:annotate>
                <annox:annotate annox:class="javax.xml.bind.annotation.XmlRootElement" name="userList" />
            </annox:annotate>
        </jaxb:bindings>
    </jaxb:bindings>
</jaxb:bindings>

低于约束。xjb也可以使用

<?xml version="1.0"?>
<jxb:bindings version="1.0" xmlns:jxb="http://java.sun.com/xml/ns/jaxb" xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc" jxb:extensionBindingPrefixes="xjc" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <jxb:bindings schemaLocation="schema.xsd" node="/xs:schema">
    <jxb:globalBindings>
      <xjc:simple />
    </jxb:globalBindings>
  </jxb:bindings>
</jxb:bindings>

现在您可以运行任务“jaxb”，全部设置完毕。干杯

你ser.java

//
// This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, v2.2.7 
// See <a href="http://java.sun.com/xml/jaxb">http://java.sun.com/xml/jaxb</a> 
// Any modifications to this file will be lost upon recompilation of the source schema. 
// Generated on: 2017.01.26 at 11:59:18 AM EST 
//


package com.sample.jaxbclasses;

import java.io.Serializable;
import java.util.Calendar;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlSchemaType;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;


/**
* <p>Java class for user complex type.
* 
 * <p>The following schema fragment specifies the expected content contained within this class.
* 
 * <pre>
* &lt;complexType name="user">
*   &lt;complexContent>
*     &lt;restriction base="{http://www.w3.org/2001/XMLSchema}anyType">
*       &lt;all>
*         &lt;element name="id" type="{http://www.w3.org/2001/XMLSchema}long" minOccurs="0"/>
*         &lt;element name="name" type="{http://www.w3.org/2001/XMLSchema}string"/>
*         &lt;element name="registrationDate" type="{http://www.w3.org/2001/XMLSchema}dateTime"/>
*       &lt;/all>
*     &lt;/restriction>
*   &lt;/complexContent>
* &lt;/complexType>
* </pre>
* 
 * 
 */
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "user", propOrder = {

})
@XmlRootElement(name = "user")
public class User
    implements Serializable
{

    private final static long serialVersionUID = 1L;
    protected Long id;
    @XmlElement(required = true)
    protected String name;
    @XmlElement(required = true, type = String.class)
    @XmlJavaTypeAdapter(Adapter1 .class)
    @XmlSchemaType(name = "dateTime")
    protected Calendar registrationDate;

    /**
     * Gets the value of the id property.
     * 
     * @return
     *     possible object is
     *     {@link Long }
     *     
     */
    public Long getId() {
        return id;
    }

    /**
     * Sets the value of the id property.
     * 
     * @param value
     *     allowed object is
     *     {@link Long }
     *     
     */
    public void setId(Long value) {
        this.id = value;
    }

    /**
     * Gets the value of the name property.
     * 
     * @return
     *     possible object is
     *     {@link String }
     *     
     */
    public String getName() {
        return name;
    }

    /**
     * Sets the value of the name property.
     * 
     * @param value
     *     allowed object is
     *     {@link String }
     *     
     */
    public void setName(String value) {
        this.name = value;
    }

    /**
     * Gets the value of the registrationDate property.
     * 
     * @return
     *     possible object is
     *     {@link String }
     *     
     */
    public Calendar getRegistrationDate() {
        return registrationDate;
    }

    /**
     * Sets the value of the registrationDate property.
     * 
     * @param value
     *     allowed object is
     *     {@link String }
     *     
     */
    public void setRegistrationDate(Calendar value) {
        this.registrationDate = value;
    }

}