Android + Dozer 抛出 IllegalArgumentException

Question

我正在尝试在 Android 项目中使用 Dozer。但是当我尝试将一个 Bean 映射到另一个 Bean 时，它会抛出以下错误：

06-16 09:45:56.687    1727-1727/ch.heia_fr.tic.ipal.test_dozer E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: ch.heia_fr.tic.ipal.test_dozer, PID: 1727
    java.lang.RuntimeException: Unable to start activity ComponentInfo{ch.heia_fr.tic.ipal.test_dozer/ch.heia_fr.tic.ipal.test_dozer.MainActivity}: java.lang.IllegalArgumentException: http://apache.org/xml/features/validation/schema
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2693)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2760)
            at android.app.ActivityThread.access$900(ActivityThread.java:177)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:145)
            at android.app.ActivityThread.main(ActivityThread.java:5944)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1389)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1184)
     Caused by: java.lang.IllegalArgumentException: http://apache.org/xml/features/validation/schema
            at org.apache.harmony.xml.parsers.DocumentBuilderFactoryImpl.setAttribute(DocumentBuilderFactoryImpl.java:86)
            at org.dozer.loader.xml.XMLParserFactory.createDocumentBuilderFactory(XMLParserFactory.java:56)
            at org.dozer.loader.xml.XMLParserFactory.createParser(XMLParserFactory.java:35)
            at org.dozer.loader.xml.MappingStreamReader.<init>(MappingStreamReader.java:43)
            at org.dozer.loader.xml.MappingFileReader.<init>(MappingFileReader.java:44)
            at org.dozer.DozerBeanMapper.loadFromFiles(DozerBeanMapper.java:219)
            at org.dozer.DozerBeanMapper.loadCustomMappings(DozerBeanMapper.java:209)
            at org.dozer.DozerBeanMapper.initMappings(DozerBeanMapper.java:315)
            at org.dozer.DozerBeanMapper.getMappingProcessor(DozerBeanMapper.java:192)
            at org.dozer.DozerBeanMapper.map(DozerBeanMapper.java:120)
            at ch.heia_fr.tic.ipal.test_dozer.MainActivity.onCreate(MainActivity.java:26)
            at android.app.Activity.performCreate(Activity.java:6289)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2760)
            at android.app.ActivityThread.access$900(ActivityThread.java:177)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:145)
            at android.app.ActivityThread.main(ActivityThread.java:5944)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1389)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1184)

这是我的 build.gradle ：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        applicationId "ch.heia_fr.tic.ipal.test_dozer"
        minSdkVersion 19
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    packagingOptions{
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.2.0'
    compile 'net.sf.dozer:dozer:5.4.0'
}

以及出现问题的代码：

PersonBean bean = new PersonBean();
bean.setFirstName("Bob");
bean.setLastName("Robert");
bean.setStreet("Main Street");
bean.setTown("Bern");

Mapper mapper = new DozerBeanMapper();
PersonDTO dto = mapper.map(bean, PersonDTO.class

我认为问题出在缺少 XML MappingFile 但我不知道将它放在 android 项目中的哪个位置。

谢谢

Answer 1

它甚至没有开始搜索映射文件。如果您查看在 android-sdk-22 中实现的 DocumentBuilderFactory，您会发现该方法没有实现。它实际上抛出了一个异常。

我猜想android 不支持xml bean 映射定义。尝试使用文档中显示的 API 映射。

编辑：它看起来也不工作。 Dozer 仍然尝试在映射调用时加载这两个映射（构建器映射和基于文件的映射）。 这么久了，我试过 Dozer、Orika 和 ModelMapper，但只有最后一个适用于 android。