Android和Hibernate Validator-可以一起使用吗? [英] Android and Hibernate Validator - it is possible to use together?

问题描述

我想知道是否可以在Android上使用Hibernate Validator.我尝试过，但看起来Android平台(javax.xml.stream.XMLInputFactory)上缺少某些javax软件包.

I wonder if it is possible to use Hibernate Validator on Android. I tried but it looks like some javax packages are missing on Android platform (javax.xml.stream.XMLInputFactory).

这是我的代码，依赖关系和错误:

Here is my code, dependency and error:

ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory();
Validator validator = validatorFactory.getValidator();

compile 'org.hibernate:hibernate-validator:5.1.3.Final'
compile 'javax.el:javax.el-api:2.2.4'
compile 'org.glassfish.web:javax.el:2.2.4'

03-28 10:07:15.562    6477-6477/foo E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: foo, PID: 6477
    java.lang.NoClassDefFoundError: Failed resolution of: Ljavax/xml/stream/XMLInputFactory;
            at org.hibernate.validator.internal.xml.XmlParserHelper.<init>(XmlParserHelper.java:66)
            at org.hibernate.validator.internal.xml.ValidationXmlParser.<init>(ValidationXmlParser.java:60)
            at org.hibernate.validator.internal.engine.ConfigurationImpl.getBootstrapConfiguration(ConfigurationImpl.java:287)
            at org.hibernate.validator.internal.engine.ConfigurationImpl.parseValidationXml(ConfigurationImpl.java:361)
            at org.hibernate.validator.internal.engine.ConfigurationImpl.buildValidatorFactory(ConfigurationImpl.java:214)
            at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:110)
            at foo.FooActivity.onCreate(FooActivity.java:35)
            at android.app.Activity.performCreate(Activity.java:5933)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
            at android.app.ActivityThread.access$800(ActivityThread.java:144)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5221)
            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:899)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
     Caused by: java.lang.ClassNotFoundException: Didn't find class "javax.xml.stream.XMLInputFactory" on path: DexPathList[[zip file "/data/app/foo-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
            at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
            at org.hibernate.validator.internal.xml.XmlParserHelper.<init>(XmlParserHelper.java:66)
            at org.hibernate.validator.internal.xml.ValidationXmlParser.<init>(ValidationXmlParser.java:60)
            at org.hibernate.validator.internal.engine.ConfigurationImpl.getBootstrapConfiguration(ConfigurationImpl.java:287)
            at org.hibernate.validator.internal.engine.ConfigurationImpl.parseValidationXml(ConfigurationImpl.java:361)
            at org.hibernate.validator.internal.engine.ConfigurationImpl.buildValidatorFactory(ConfigurationImpl.java:214)
            at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:110)
            at foo.FooActivity.onCreate(FooActivity.java:35)
            at android.app.Activity.performCreate(Activity.java:5933)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
            at android.app.ActivityThread.access$800(ActivityThread.java:144)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5221)
            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:899)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
    Suppressed: java.lang.ClassNotFoundException: javax.xml.stream.XMLInputFactory
            at java.lang.Class.classForName(Native Method)
            at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
            at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
            ... 21 more
     Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

推荐答案

我设法解决了这个问题.由于缺少xml软件包，我们必须在配置中禁用此选项.这是我建议的解决方案.

I managed to solve this. Due to lack of xml packages we have to disable this option in configuration. Here is my proposed solution.

    ValidatorFactory validatorFactory = Validation
            .byDefaultProvider()
            .configure()
            .ignoreXmlConfiguration()
            .buildValidatorFactory();

    Validator validator = validatorFactory.getValidator();

必须具有以下依赖性:

compile 'org.hibernate:hibernate-validator:5.1.3.Final'
compile 'javax.el:javax.el-api:2.2.4'
compile 'org.glassfish.web:javax.el:2.2.4'

对于来自字符串资源的自定义消息，必须实现MessageInterpolator.首先，必须扩展应用程序才能在整个项目中访问全局上下文.

For custom messages from strings resources, MessageInterpolator has to be implemented. First of all Application must be extended for access to global context all over project.

public class ApplicationContext extends Application {
    private static Application application;

    @Override
    public void onCreate() {
        super.onCreate();
        application = this;
    }

    public static Application getApplication() {
        return application;
    }
}

配置:

    ValidatorFactory validatorFactory = Validation
            .byDefaultProvider()
            .configure()
            .ignoreXmlConfiguration()
            .messageInterpolator(new MessageInterpolator() {
                @Override
                public String interpolate(String messageTemplate, Context context) {
                    int id = ApplicationContext.getApplication().getResources().getIdentifier(messageTemplate, "string", R.class.getPackage().getName());
                    return ApplicationContext.getApplication().getString(id);
                }

                @Override
                public String interpolate(String messageTemplate, Context context, Locale locale) {
                    return interpolate(messageTemplate, context);
                }
            })
            .buildValidatorFactory();

示例:

@NotEmpty(message = "error_empty")
private String foo;

<resources>
    <string name="error_empty">Cannot be empty</string>
</resources>

这篇关于Android和Hibernate Validator-可以一起使用吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！