【发布时间】：2012-03-12 11:42:18
【问题描述】：
我正在尝试为 Dropbox 爬虫编写测试。
我已经设置了一个在加载时将数据加载到数据库中的 Fixture。
Fixtures.deleteDatabase();
Fixtures.loadModels("testusers.yaml");
代码出现问题
da = da.merge(); //exceptions gets thrown here
已到达。它抛出一个 JdbcSQLException：
org.h2.jdbc.JdbcSQLException: Timeout trying to lock table "USER"; SQL statement:
select user0_.id as id7_0_, user0_.activationSent as activati2_7_0_,
user0_.confirmationCode as confirma3_7_0_, user0_.email as email7_0_,
user0_.first_name as first5_7_0_, user0_.isAdmin as isAdmin7_0_,
user0_.lastLogin as lastLogin7_0_, user0_.last_name as last8_7_0_,
user0_.passwordHash as password9_7_0_,
user0_.recoverPasswordCode as recover10_7_0_,
user0_.referralCode as referra11_7_0_,
user0_.signupDate as signupDate7_0_ from User user0_ where user0_.id=? [50200-149]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:327)
at org.h2.message.DbException.get(DbException.java:167)
at org.h2.message.DbException.get(DbException.java:144)
at org.h2.table.RegularTable.doLock(RegularTable.java:499)
at org.h2.table.RegularTable.lock(RegularTable.java:433)
at org.h2.table.TableFilter.lock(TableFilter.java:140)
at org.h2.command.dml.Select.queryWithoutCache(Select.java:571)
at org.h2.command.dml.Query.query(Query.java:257)
at org.h2.command.dml.Query.query(Query.java:227)
at org.h2.command.CommandContainer.query(CommandContainer.java:78)
at org.h2.command.Command.executeQuery(Command.java:178)
at org.h2.jdbc.JdbcPreparedStatement.executeQuery(JdbcPreparedStatement.java:96)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1953)
at org.hibernate.loader.Loader.doQuery(Loader.java:802)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)
at org.hibernate.loader.Loader.loadEntity(Loader.java:2037)
... 36 more
UpdateDropboxRowJob.java 引发异常的地方
package mashpan.crawl.jobs;
import play.Logger;
import play.jobs.*;
import models.DropboxAuthentication;
public class UpdateDropboxRowJob extends Job {
private DropboxAuthentication da;
private long count;
private boolean crawled;
public UpdateDropboxRowJob(DropboxAuthentication da, long count, boolean crawled) {
Logger.debug("[UpdateDropboxRowJob] ctor: "
+",[da=" + (da == null ? "null" : da.toString()) + "]"
+", count=[" + count + "]"
+", crawled=[" + crawled + "]"
);
this.da = da;
this.count = count;
this.crawled = crawled;
}
@Override
public void doJob() throws Exception {
Logger.debug("[UpdateDropboxRowJob] doJob: "
+"da=[" + (da == null ? "null" : da.toString()) + "]"
+"count=[" + count + "]"
+"crawled=[" + crawled + "]"
+"da.count"+(da == null ? "da==null" : da.count) + "]"
);
da = da.merge(); //exceptions gets thrown here
da.count = this.count;
da.crawled = this.crawled;
da.save();
}
}
@Entity
public class DropboxAuthentication extends Model {
public String type;
//public String email;
public String token_key;
public String token_secret;
public long count;
public boolean crawled;
public byte[] cipher;
public byte[] iv;
public long lastCrawlTime;
@OneToOne
public User user;
public DropboxAuthentication(String type, byte[] cipher, byte[] iv, String token_key, String token_secret, User u, Date issueDate)
{
this.type = type;
this.cipher = cipher;
this.iv = iv;
this.token_key = token_key;
this.token_secret = token_secret;
this.user = u;
}
@Override
public String toString() {
return "DropboxAuthentication [type=" + type + ", token_key="
+ token_key + ", token_secret=" + token_secret + ", count="
+ count + ", crawled=" + crawled + ", cipher="
+ Arrays.toString(cipher) + ", iv=" + Arrays.toString(iv)
+ ", lastCrawlTime=" + lastCrawlTime + ", user=" + user + "]";
}
}
我想是事务有问题，我试着去做
JPA.em().getTransaction().commit();
但我给了我另一个例外，即交易未激活。出乎意料
JPA.em().getTransaction().begin();
JPA.em().getTransaction().commit();
抛出已经有事务在运行的异常。
所以可能主要的问题是 play 如何在测试模式下处理事务
播放框架：1.2.3
*********** 更新 ************* p>
我从
更改了我的 application.conf%db=mem
到
%test.db=mysql://USER:PASSWORD@localhost/development
在下面我现在得到一个不同的异常（在同一行）：
javax.persistence.EntityNotFoundException: Unable to find models.User with id 1
at org.hibernate.ejb.Ejb3Configuration$Ejb3EntityNotFoundDelegate.handleEntityNotFound(Ejb3Configuration.java:133)
at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:233)
at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:285)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1090)
at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:1038)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:630)
at org.hibernate.type.EntityType.resolve(EntityType.java:438)
at org.hibernate.type.EntityType.replace(EntityType.java:298)
at org.hibernate.type.AbstractType.replace(AbstractType.java:176)
at org.hibernate.type.TypeHelper.replace(TypeHelper.java:212)
at org.hibernate.event.def.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:600)
at org.hibernate.event.def.DefaultMergeEventListener.mergeTransientEntity(DefaultMergeEventListener.java:337)
at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:303)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:258)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:84)
at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:867)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:851)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:855)
at org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:686)
at play.db.jpa.GenericModel.merge(GenericModel.java:211)
at mashpan.crawl.jobs.UpdateDropboxRowJob.doJob(UpdateDropboxRowJob.java:33)
at play.jobs.Job.doJobWithResult(Job.java:50)
at play.jobs.Job.call(Job.java:146)
但是，查看数据库，我发现用户实际上是持久存在的。
【问题讨论】：
-
您不会碰巧打开了一个 h2 控制台，您只是在其中插入了一个用户而没有提交，是吗？ :)
标签： java hibernate jdbc playframework