java - 如何使用 CXF xjcplugin 生成 equals 和 hashCode

Question

我正在尝试从 XSD 文件生成一个包含方法 toString、equals 和 hashCode 的 Java 类。我开始使用 toString，但我无法弄清楚如何让 CXF 插件生成 equals 和 hashCode 方法。

这是我的 XSD 文件:

<?xml version="1.0" encoding="utf-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.example.com/messagedefinitions"
           xmlns="http://www.example.com/messagedefinitions">


    <xs:element name="Message">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="status" type="Status"/>
                <xs:element name="id" type="Identifier"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>

    <xs:simpleType name="Status">
        <xs:restriction base="xs:string">
            <xs:maxLength value="4"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:simpleType name="Identifier">
        <xs:restriction base="xs:int"/>
    </xs:simpleType>

</xs:schema>

我的工作 POM(不工作的被注释掉了):

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>xsd-demo</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>xsd-demo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <cxf.version>2.6.1</cxf.version>
        <cxf.xjc.plugin.version>2.6.1</cxf.xjc.plugin.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-tools-common</artifactId>
            <version>${cxf.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.cxf.xjc-utils</groupId>
            <artifactId>xjc-utils</artifactId>
            <type>pom</type>
            <version>${cxf.xjc.plugin.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.cxf.xjc-utils</groupId>
            <artifactId>cxf-xjc-runtime</artifactId>
            <version>${cxf.xjc.plugin.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <inherited>true</inherited>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.cxf</groupId>
                <artifactId>cxf-xjc-plugin</artifactId>
                <version>${cxf.xjc.plugin.version}</version>
                <executions>
                    <execution>
                        <id>generate-sources</id>
                        <phase>generate-sources</phase>
                        <goals>
                            <goal>xsdtojava</goal>
                        </goals>

                        <configuration>
                            <sourceRoot>${basedir}/target/generated-sources</sourceRoot>
                            <xsdOptions>
                                <xsdOption>
                                    <extension>true</extension>
                                    <xsd>${basedir}/src/main/resources/xsd/Message.xsd</xsd>
                                    <bindingFile>${basedir}/src/main/resources/bindings.xml</bindingFile>
                                    <extensionArgs>
                                        <arg>-Xts:style:multiline</arg>
                                        <!--<arg>-Xequals</arg>-->
                                        <!--<arg>-XhashCode</arg>-->
                                    </extensionArgs>
                                </xsdOption>
                            </xsdOptions>
                            <extensions>
                                <extension>org.apache.cxf.xjcplugins:cxf-xjc-ts:${cxf.xjc.plugin.version}</extension>
                                <!--<extension>org.apache.cxf.xjcplugins:cxf-xjc-XhashCode:${cxf.xjc.plugin.version}-->
                                <!--</extension>-->
                                <!--<extension>org.apache.cxf.xjcplugins:cxf-xjc-Xequals:${cxf.xjc.plugin.version}-->
                                <!--</extension>-->
                            </extensions>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

绑定(bind)文件:

<?xml version="1.0" encoding="UTF-8"?>
<jaxb:bindings
        xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
        xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
        jaxb:version="2.1">
    <jaxb:globalBindings>
        <xjc:serializable uid="1234"/>
    </jaxb:globalBindings>
</jaxb:bindings>

如果我取消注释 Xequals 的注释行，我会收到此错误:

[错误] 无法在项目 xsd-demo 上执行目标 org.apache.cxf:cxf-xjc-plugin:2.6.1:xsdtojava (generate-sources):无法下载扩展工件:请求的下载不存在。在中央 ( http://repo1.maven.org/maven2 ) 找不到工件 org.apache.cxf.xjcplugins:cxf-xjc-Xequals:jar:2.6.1

很好，我意识到工件不存在，但我不知道如何配置 CXF 插件来生成 equals 和 hashCode 方法。你知道我如何配置 CXF 插件来生成 equals 和 hashCode 方法吗？在此先感谢您的帮助。

Answer 1

我无法让 cxf-xjc-plugin 从 XML 模式文件生成 equals 和 hashCode 方法。我放弃了 cxf-xjc-plugin，转而使用 maven-jaxb2-plugin。这是我使用的插件配置:

<plugin>
  <groupId>org.jvnet.jaxb2.maven2</groupId>
  <artifactId>maven-jaxb2-plugin</artifactId>
  <version>0.8.3</version>
  <executions>
    <execution>
      <id>generate</id>
      <phase>generate-sources</phase>
      <goals>
        <goal>generate</goal>
      </goals>
      <configuration>
        <extension>true</extension>
          <generatePackage>my.package.name</generatePackage>
          <args>
            <arg>-XtoString</arg>
            <arg>-Xequals</arg>
            <arg>-XhashCode</arg>
          </args>
          <schemaDirectory>${basedir}/src/main/resources</schemaDirectory>
          <schemaIncludes>
            <include>xsd/*.xsd</include>
          </schemaIncludes>
          <plugins>
            <plugin>
              <groupId>org.jvnet.jaxb2_commons</groupId>
              <artifactId>jaxb2-basics</artifactId>
              <version>0.6.4</version>
            </plugin>
          </plugins>
        </configuration>
      </execution>
  </executions>
</plugin>