Question

启动corda节点时出现错误消息。

Exception in thread "main" java.lang.NoClassDefFoundError: 
      net/corda/webserver/services/WebServerPluginRegistry
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.access$100(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at java.util.ServiceLoader$LazyIterator.nextService(Unknown Source)
    at java.util.ServiceLoader$LazyIterator.next(Unknown Source)
    at java.util.ServiceLoader$1.next(Unknown Source)

插件的代码：

class testcasePlugin : SerializationWhitelist, WebServerPluginRegistry{

override val webApis = listOf(
        Function(::MiscApi),

)

override val staticServeDirs: Map<String, String> = mapOf(
        // URL is /web/index
        "index" to javaClass.classLoader.getResource("index").toExternalForm(),
        // URL is /web/testcase
        "testcase" to javaClass.classLoader.getResource("testcase").toExternalForm()
)

override val whitelist: List<Class<*>> = listOf(TransactionBuilder::class.java)
}

获取错误的诀窍是删除＆＃39; net.corda.core.serialization.SerializationWhitelist＆＃39;来自META-INF.services文件夹的文件只留下＆net; net.corda.webserver.services.WebServerPluginRegistry＆＃39;文件。

知道出了什么问题吗？

Answer 1

您必须将插件拆分为两个，如下所示：

class testcaseWebPlugin : WebServerPluginRegistry {

override val webApis = listOf(
    Function(::MiscApi))

override val staticServeDirs: Map<String, String> = mapOf(
    // URL is /web/index
    "index" to javaClass.classLoader.getResource("index").toExternalForm(),
    // URL is /web/testcase
    "testcase" to javaClass.classLoader.getResource("testcase").toExternalForm()
)

class testcaseSerializationPlugin : SerializationWhitelist {

    override val whitelist: List<Class<*>> = 
        listOf(TransactionBuilder::class.java)
    }
}

Corda：升级到v1.0后启动节点时出错，并将序列化白名单添加到META-INF.services

1 个答案: