[英]Compound key with Ebean and PlayFramework
我已经在MySQL中创建了复合键。 该表为ActionNoteCode
,复合键由字段action_note_code
和collection
。 我在ebean和play框架的复合键上遵循了该示例。
该类的ActionNoteCode
代码:
@Entity
public class ActionNoteCode extends Model {
@EmbeddedId
public ActionNoteCodeIndex id;
String description = "";
@Embeddable
class ActionNoteCodeIndex {
String acvtion_note_code;
String collection;
}
}
当Play开始播放时,会引发以下错误:
Cannot register class [models.prospector.actionNote.ActionNoteCode$ActionNoteCodeIndex] in Ebean server
这表明您正在使用models文件夹/软件包:
ebean.default="models.*"
这是完整的堆栈跟踪:
play.api.Configuration$$anon$1: Configuration error[Cannot register class [models.prospector.actionNote.ActionNoteCode$ActionNoteCodeIndex] in Ebean server]
at play.api.Configuration$.configError(Configuration.scala:156)
at play.api.Configuration.reportError(Configuration.scala:809)
at play.Configuration.reportError(Configuration.java:368)
at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.addModelClassesToServerConfig(DefaultEbeanConfig.java:107)
at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.parse(DefaultEbeanConfig.java:82)
at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.get(DefaultEbeanConfig.java:56)
at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.get(DefaultEbeanConfig.java:40)
at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:81)
at com.google.inject.internal.BoundProviderFactory.provision(BoundProviderFactory.java:72)
at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:61)
Caused by: java.lang.VerifyError: Bad type on operand stack
Exception Details:
Location:
models/prospector/actionNote/ActionNoteCode$ActionNoteCodeIndex.<init>(Lmodels/prospector/actionNote/ActionNoteCode;)V @2: invokevirtual
Reason:
Type uninitializedThis (current frame, stack[0]) is not assignable to 'models/prospector/actionNote/ActionNoteCode$ActionNoteCodeIndex'
Current Frame:
bci: @2
flags: { flagThisUninit }
locals: { uninitializedThis, 'models/prospector/actionNote/ActionNoteCode' }
stack: { uninitializedThis, 'models/prospector/actionNote/ActionNoteCode' }
Bytecode:
0x0000000: 2a2b b600 202a b700 232a bb00 2559 2ab7
0x0000010: 0028 b500 2ab1
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.addModelClassesToServerConfig(DefaultEbeanConfig.java:105)
at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.parse(DefaultEbeanConfig.java:82)
at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.get(DefaultEbeanConfig.java:56)
at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.get(DefaultEbeanConfig.java:40)
at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:81)
at com.google.inject.internal.BoundProviderFactory.provision(BoundProviderFactory.java:72)
at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:61)
at com.google.inject.internal.BoundProviderFactory.get(BoundProviderFactory.java:62)
1-尝试使您的类成为静态的, public static class ActionNoteCodeIndex
。
2-如果它不起作用,请将您的ActionNoteCodeIndex
类ActionNoteCodeIndex
到单独的文件中。 我想这确实有所作为,因为ebean扫描文件以使用它们。
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