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GWT - > RPC - >的MongoDB(嗎啡)GWT +蒙戈(嗎啡)= IncompatibleClassChangeError
Caused by: java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at
com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass(JettyLauncher.java:372)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:366)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at
com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload$WebAppClassLoaderExtension.findClass(JettyLauncher.java:372)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:366)
at org.mortbay.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:337)
at com.mongodb.MongoOptions.reset(MongoOptions.java:47)
at com.mongodb.MongoOptions.<init>(MongoOptions.java:29)
at com.mongodb.Mongo.<init>(Mongo.java:148)
at com.mongodb.Mongo.<init>(Mongo.java:113)
at
myapp.database.MyCodeImpl.getDataSource(MyCodeImpl.java:42)
at
MyCodeImpl.getDataSource():
public Datastore getDataSource() {
try {
Morphia morphia = new Morphia();
Mongo db = new Mongo("localhost");
return morphia.createDatastore(db, getDatabaseName());
} catch (UnknownHostException e) {
e.printStackTrace();
throw new DatabaseException();
}
}
線42:蒙戈分貝=新蒙戈( 「本地主機」);
沒有GWT工作正常。爲什麼不適用於GWT? 看起來像com.mongodb.DbDecoder問題...有什麼建議嗎?
同意!確保所有.jar庫(MongoDB等)都在war \ WEB-INF \ lib中,而不是任何子目錄。 – vladaman 2012-04-07 06:53:44