mongodb 3.x驱动程序Android兼容性 [英] mongodb 3.x driver Android compatibility
问题描述
我正在开发一个Android应用程序，该应用程序使用java mongodb驱动程序3.0.3连接到mongodb的每个实例.
I'm developing an Android app that use the java mongodb driver 3.0.3 to connect to every instance of mongodb.
通用等距的连接器代码为:
The connector code to a generic istance is:
try{
MongoCredential credential = MongoCredential.createCredential(user, dbname, pass.toCharArray());
MongoClient mongoClient = new MongoClient( new ServerAddress(server , port ), Arrays.asList(credential));
MongoDatabase db = mongoClient.getDatabase(dbname);
System.out.println("Connect to database successfully ");
Iterator i= mongoClient.listDatabaseNames().iterator();
while (i.hasNext()){
Log.d("DATABASE", (String) i.next());
}
Iterator ic= db.listCollectionNames().iterator();
while (ic.hasNext()){
Log.d("COLLECTION", (String) ic.next());
}
}catch(Exception e){
System.err.println( e.getClass().getName() + ": " + e.getMessage() );
}
在运行时我有一些错误:
At runtime I have some error:
09-11 19:13:50.898 7418-7418/it.mysite.mongodbviewer W/org.bson.ObjectId:无法从JMX获取进程标识符，而是使用随机数java.lang.NoClassDefFoundError:无法解决以下问题: Ljava/lang/management/ManagementFactory;
09-11 19:13:50.898 7418-7418/it.mysite.mongodbviewer W/org.bson.ObjectId﹕ Failed to get process identifier from JMX, using random number instead java.lang.NoClassDefFoundError: Failed resolution of: Ljava/lang/management/ManagementFactory;
和
com.mongodb.MongoException:java.lang.NoClassDefFoundError:com.mongodb.connection.ScramSha1Authenticator $ ScramSha1SaslClient
com.mongodb.MongoException: java.lang.NoClassDefFoundError: com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient
使用以下代码生成循环:
that generate a loop with this:
I/art:拒绝先前失败的类java.lang.Class的重新初始化
I/art﹕ Rejecting re-init on previously-failed class java.lang.Class
任何人都有解决方案吗? Java/lang/management/ManagementFactory对于Android似乎不存在，如何解决?如果这是问题的中心.
Anyone has a solution? java/lang/management/ManagementFactory seems not to exist for Android, how can you solve? If this is the center of the problem.
预先感谢，Matteo
Thanks in advance, Matteo
PS:完整的日志为:
PS: The complete log is:
09-11 19:13:50.898 7418-7418/it.mysite.mongodbviewer W/org.bson.ObjectId﹕ Failed to get process identifier from JMX, using random number instead
java.lang.NoClassDefFoundError: Failed resolution of: Ljava/lang/management/ManagementFactory;
at org.bson.types.ObjectId.createProcessIdentifier(ObjectId.java:502)
at org.bson.types.ObjectId.<clinit>(ObjectId.java:460)
at com.mongodb.connection.ClusterId.<init>(ClusterId.java:47)
at com.mongodb.connection.DefaultClusterFactory.create(DefaultClusterFactory.java:40)
at com.mongodb.Mongo.createCluster(Mongo.java:660)
at com.mongodb.Mongo.createCluster(Mongo.java:646)
at com.mongodb.Mongo.<init>(Mongo.java:275)
at com.mongodb.MongoClient.<init>(MongoClient.java:184)
at com.mongodb.MongoClient.<init>(MongoClient.java:160)
at it.mysite.mongodbmanager.data.MongoDBDriver.connect(MongoDBDriver.java:102)
at it.mysite.mongodbmanager.fragments.MongoDBAccountDetailFragment.onClick(MongoDBAccountDetailFragment.java:101)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19865)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.ClassNotFoundException: Didn't find class "java.lang.management.ManagementFactory" on path: DexPathList[[zip file "/data/app/it.mysite.mongodbviewer-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at org.bson.types.ObjectId.createProcessIdentifier(ObjectId.java:502)
at org.bson.types.ObjectId.<clinit>(ObjectId.java:460)
at com.mongodb.connection.ClusterId.<init>(ClusterId.java:47)
at com.mongodb.connection.DefaultClusterFactory.create(DefaultClusterFactory.java:40)
at com.mongodb.Mongo.createCluster(Mongo.java:660)
at com.mongodb.Mongo.createCluster(Mongo.java:646)
at com.mongodb.Mongo.<init>(Mongo.java:275)
at com.mongodb.MongoClient.<init>(MongoClient.java:184)
at com.mongodb.MongoClient.<init>(MongoClient.java:160)
at it.mysite.mongodbmanager.data.MongoDBDriver.connect(MongoDBDriver.java:102)
at it.mysite.mongodbmanager.fragments.MongoDBAccountDetailFragment.onClick(MongoDBAccountDetailFragment.java:101)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19865)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Suppressed: java.lang.ClassNotFoundException: java.lang.management.ManagementFactory
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 22 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
09-11 19:13:50.901 7418-7418/it.mysite.mongodbviewer I/cluster﹕ Cluster created with settings {hosts=[192.168.1.74:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
09-11 19:13:50.918 7418-7418/it.mysite.mongodbviewer I/System.out﹕ Connect to database successfully
09-11 19:13:50.924 7418-7418/it.mysite.mongodbviewer I/cluster﹕ No server chosen by ReadPreferenceServerSelector{readPreference=primary} from cluster description ClusterDescription{type=UNKNOWN, connectionMode=SINGLE, all=[ServerDescription{address=192.168.1.74:27017, type=UNKNOWN, state=CONNECTING}]}. Waiting for 30000 ms before timing out
09-11 19:13:50.954 7418-7487/it.mysite.mongodbviewer I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient>
09-11 19:13:50.954 7418-7487/it.mysite.mongodbviewer I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient>
09-11 19:13:50.955 7418-7487/it.mysite.mongodbviewer I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient>
09-11 19:13:50.956 7418-7487/it.mysite.mongodbviewer I/cluster﹕ Exception in monitor thread while connecting to server 192.168.1.74:27017
com.mongodb.MongoException: java.lang.NoClassDefFoundError: com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient
at com.mongodb.connection.InternalStreamConnection.open(InternalStreamConnection.java:125)
at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:127)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.NoClassDefFoundError: com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient
at com.mongodb.connection.ScramSha1Authenticator.createSaslClient(ScramSha1Authenticator.java:61)
at com.mongodb.connection.SaslAuthenticator.authenticate(SaslAuthenticator.java:42)
at com.mongodb.connection.DefaultAuthenticator.authenticate(DefaultAuthenticator.java:32)
at com.mongodb.connection.InternalStreamConnectionInitializer.authenticateAll(InternalStreamConnectionInitializer.java:99)
at com.mongodb.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:44)
at com.mongodb.connection.InternalStreamConnection.open(InternalStreamConnection.java:115)
at com.mongodb.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:127)
at java.lang.Thread.run(Thread.java:818)
09-11 19:13:51.479 7418-7487/it.mysite.mongodbviewer I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient>
09-11 19:13:52.106 7418-7487/it.mysite.mongodbviewer I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient>
09-11 19:13:52.637 7418-7487/it.mysite.mongodbviewer I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.mongodb.connection.ScramSha1Authenticator$ScramSha1SaslClient>
推荐答案
对于想在Android上使用github.com/mongodb/mongo-java-driver的任何人，我都有解决方案！
For anyone want to use github.com/mongodb/mongo-java-driver on Android, I have a solution!
我已经从表面上的github.com/mongodb/mongo-java-driver派生出来，并集成了github.com/koterpillar/android-sasl的类来修复Android上的javax.security.sasl.
I've forked from ufficial github.com/mongodb/mongo-java-driver and integrated classes from github.com/koterpillar/android-sasl to fix javax.security.sasl on Android.
重要提示:由于Android上不存在java.nio.channels.AsynchronousSocketChannel，并且不存在任何移植，因此未移植任何驱动程序异步.
Important: No driver-async is not ported because java.nio.channels.AsynchronousSocketChannel doesn't exist on Android and doesn't exist any porting.
结果是可以正常工作的同步MongoDB Android(Java)驱动程序，您可以从 https:/下载/github.com/matfur92/mongo-java-driver
The result is a working synchronous MongoDB Android (Java) driver that you can download from https://github.com/matfur92/mongo-java-driver
最新更新(2015年11月5日): 3.2.0 -SNAPSHOT->
LAST UPDATE (5 November 2015) : 3.2.0-SNAPSHOT --> https://github.com/matfur92/mongo-java-driver/blob/gh-pages/JARs/mongo-java-driver-3.2.0-SNAPSHOT.jar?raw=true
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