Я использую MyBatis с playframework, и все работает хорошо, кроме:
Когда я пытался использовать кэш по умолчанию, встроенный в MyBatis (тег <cache/> в файлах xml mapper), при получении кэшированного оператора select я получаю эту трассировку стека.
Если я выполняю одни и те же операторы в модульном тесте (или другом приложении без использования playframework), все работает нормально.
Итак, я полагаю, это как-то связано с тем, что playframework загружает / компилирует классы, что-то вроде проблемы загрузчика классов.
Макет каталога моего проекта выглядит примерно так (соответствующие биты):
app
controllers
data // xml mapping files and java interfaces for ibatis
// & a class that returns a SqlSessionFactory
domain // Pojos for SQL results (e.g. User.java)
models
views
lib // here is myibatis jar file
(...) // the rest of the standard play framework project
Метод модели, который вызывает исключение, таков:
public static UserAuthentication findAuthenticatonIdentity(UserId userId){
SqlSessionFactory sessionFactory = IbatisSessionFactory.getSqlMapper();
SqlSession session = sessionFactory.openSession();
AuthMapper authMapper = session.getMapper(AuthMapper.class);
UserAuthentication ua = authMapper.selectByUserId(userId); // line 162
session.close();
return ua;
}
А UserAuthentication реализует Сериализуемый!
А вот и трассировка стека:
Execution exception (In /app/models/UserModel.java around line 162)
PersistenceException occured :
### Error querying database. Cause: org.apache.ibatis.cache.CacheException: Error deserializing object. Cause: java.lang.ClassNotFoundException: data.domain.UserAuthentication
### Cause: org.apache.ibatis.cache.CacheException: Error deserializing object. Cause: java.lang.ClassNotFoundException: data.domain.UserAuthentication
play.exceptions.JavaExecutionException:
### Error querying database. Cause: org.apache.ibatis.cache.CacheException: Error deserializing object. Cause: java.lang.ClassNotFoundException: data.domain.UserAuthentication
### Cause: org.apache.ibatis.cache.CacheException: Error deserializing object. Cause: java.lang.ClassNotFoundException: data.domain.UserAuthentication
at play.mvc.ActionInvoker.invoke(ActionInvoker.java:231)
at Invocation.HTTP Request(Play!)
Caused by: org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: org.apache.ibatis.cache.CacheException: Error deserializing object. Cause: java.lang.ClassNotFoundException: data.domain.UserAuthentication
### Cause: org.apache.ibatis.cache.CacheException: Error deserializing object. Cause: java.lang.ClassNotFoundException: data.domain.UserAuthentication
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:94)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:58)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:90)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40)
at $Proxy8.selectByUserId(Unknown Source)
at models.UserModel.findAuthenticatonIdentity(UserModel.java:162)
at controllers.securesocial.MySecureSocial.checkAccess(MySecureSocial.java:97)
at play.mvc.ActionInvoker.invoke(ActionInvoker.java:504)
at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:478)
at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:473)
at play.mvc.ActionInvoker.handleBefores(ActionInvoker.java:322)
at play.mvc.ActionInvoker.invoke(ActionInvoker.java:142)
... 1 more
Caused by: org.apache.ibatis.cache.CacheException: Error deserializing object. Cause: java.lang.ClassNotFoundException: data.domain.UserAuthentication
at org.apache.ibatis.cache.decorators.SerializedCache.deserialize(SerializedCache.java:94)
at org.apache.ibatis.cache.decorators.SerializedCache.getObject(SerializedCache.java:50)
at org.apache.ibatis.cache.decorators.LoggingCache.getObject(LoggingCache.java:50)
at org.apache.ibatis.cache.decorators.SynchronizedCache.getObject(SynchronizedCache.java:55)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:72)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:100)
... 13 more
Caused by: java.lang.ClassNotFoundException: data.domain.UserAuthentication
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:603)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1574)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1495)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1731)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at java.util.ArrayList.readObject(ArrayList.java:593)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at org.apache.ibatis.cache.decorators.SerializedCache.deserialize(SerializedCache.java:91)
... 18 more
UserAuthentication.java
public class UserAuthentication implements Serializable {
private int id;
private String authId;
private String secret;
private String token; // Oauth1 token
private String accessToken; // Oauth2 request token
private String displayName;
private String authMethod;
private String provider;
private String email;
private String avatarUrl;
private Date lastAccess;
private String password;
private boolean emailVerified;
private int userId;
private String activationUuid;
private Date activationExpiry;
// + getters & setters
}
UserId.java
public class UserId implements java.io.Serializable {
/**
* The id the user has in a external service.
*/
public String id;
/**
* The provider this user belongs to.
*/
public ProviderType provider; // simple enum
}