jaxb2-basics与com.intershop.gradle.jaxb 6.0.0兼容报错问题

使用Gradle 8.1.1搭配com.intershop.gradle.jaxb 6.0.0版本，基于Java 17从WSDL生成Java类，需要借助jaxb2-basics扩展来使用-XtoString参数生成带toString方法的类。但在依赖中添加jaxbext 'org.jvnet.jaxb2_commons:jaxb2-basics:1.11.1'后，哪怕没加-XtoString参数，执行xjc任务时也直接失败。注释掉该依赖后，生成任务能正常运行。现在需要解决这个兼容性问题，让jaxb2-basics能正常工作，同时可以通过-XtoString参数生成符合要求的Java类。

原项目配置如下：

plugins {
    id "java"
    id 'com.intershop.gradle.jaxb' version '6.0.0'
}

sourceSets {
    main {
        java {
            srcDir "${project.buildDir}/generated-java/csClientWs"
        }
    }
}

repositories {
    mavenCentral()
}

ext {
    testV = '4.7.472.60'
}

dependencies {
    implementation 'com.sun.xml.bind:jaxb-xjc:4.0.2'
    implementation 'com.sun.xml.bind:jaxb-jxc:4.0.2'
    implementation 'com.sun.xml.bind:jaxb-impl:4.0.2'
    implementation 'com.sun.xml.bind:jaxb-core:4.0.2'
    implementation 'org.glassfish.jaxb:jaxb-runtime:4.0.2'
    implementation 'jakarta.xml.bind:jakarta.xml.bind-api:3.0.1'
    implementation 'jakarta.activation:jakarta.activation-api:2.1.0'

    jaxbext 'javax.xml.bind:jaxb-api:2.4.0-b180830.0359'
    jaxbext 'net.java.dev.jaxb2-commons:jaxb-fluent-api:2.1.8'
    jaxbext 'com.github.jaxb-xew-plugin:jaxb-xew-plugin:2.1'

    //jaxbext 'org.jvnet.jaxb2_commons:jaxb2-basics:1.11.1'

    //implementation 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:1.11.1'
    //implementation 'org.jvnet.jaxb2_commons:jaxb2-basics-runtime:1.11.1'
    //implementation 'org.jvnet.jaxb2_commons:jaxb2-basics:1.11.1'
    //implementation 'org.jvnet.jaxb2_commons:jaxb2-basics-annotate:1.1.0'
}

jaxb {
    javaGen {
        csClientWs {
            strictValidation = false
            extension = true
            packageName = 'org.excample.csclient.ws'
            header = true
            schema = file("${projectDir}/src/main/wsdl/test_${testV}.wsdl")
            binding = file("${projectDir}/src/main/wsdl/binding.xjb")
            args = ['-wsdl', '-Xxew', '-Xfluent-api']
        }
    }
}

1. 版本适配：jaxb2-basics 1.11.1是为JAXB 2.x（javax命名空间）设计的，而当前项目使用的是JAXB 4.x（Jakarta EE 9+，jakarta命名空间），版本不匹配导致冲突。需要改用支持Jakarta的jaxb2-basics版本。
2. 更新依赖配置：
   • 替换jaxbext中的jaxb2-basics为兼容Jakarta的版本：jaxbext 'org.jvnet.jaxb2_commons:jaxb2-basics:2.0.4'
   • 添加对应的runtime依赖到implementation：implementation 'org.jvnet.jaxb2_commons:jaxb2-basics-runtime:2.0.4'
   • 移除旧的javax.xml.bind:jaxb-api依赖，避免与Jakarta API冲突
3. 启用-XtoString参数：在jaxb任务的args中添加-XtoString

修改后的完整配置：

plugins {
    id "java"
    id 'com.intershop.gradle.jaxb' version '6.0.0'
}

sourceSets {
    main {
        java {
            srcDir "${project.buildDir}/generated-java/csClientWs"
        }
    }
}

repositories {
    mavenCentral()
}

ext {
    testV = '4.7.472.60'
}

dependencies {
    implementation 'com.sun.xml.bind:jaxb-xjc:4.0.2'
    implementation 'com.sun.xml.bind:jaxb-jxc:4.0.2'
    implementation 'com.sun.xml.bind:jaxb-impl:4.0.2'
    implementation 'com.sun.xml.bind:jaxb-core:4.0.2'
    implementation 'org.glassfish.jaxb:jaxb-runtime:4.0.2'
    implementation 'jakarta.xml.bind:jakarta.xml.bind-api:3.0.1'
    implementation 'jakarta.activation:jakarta.activation-api:2.1.0'
    // 添加jaxb2-basics runtime依赖
    implementation 'org.jvnet.jaxb2_commons:jaxb2-basics-runtime:2.0.4'

    // 移除旧的javax JAXB API依赖，避免冲突
    // jaxbext 'javax.xml.bind:jaxb-api:2.4.0-b180830.0359'
    jaxbext 'net.java.dev.jaxb2-commons:jaxb-fluent-api:2.1.8'
    jaxbext 'com.github.jaxb-xew-plugin:jaxb-xew-plugin:2.1'
    // 使用兼容Jakarta的jaxb2-basics版本
    jaxbext 'org.jvnet.jaxb2_commons:jaxb2-basics:2.0.4'
}

jaxb {
    javaGen {
        csClientWs {
            strictValidation = false
            extension = true
            packageName = 'org.excample.csclient.ws'
            header = true
            schema = file("${projectDir}/src/main/wsdl/test_${testV}.wsdl")
            binding = file("${projectDir}/src/main/wsdl/binding.xjb")
            // 添加-XtoString参数
            args = ['-wsdl', '-Xxew', '-Xfluent-api', '-XtoString']
        }
    }
}

执行gradle generateJaxb任务，此时应该能正常生成带toString方法的Java类，且无任务失败报错。

内容的提问来源于stack exchange，提问作者Dmitry Roginin