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spring-data-couchbase - org.springframework.data.mapping.model.MappingException

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我试图用spring-data-couchbase版本1.0.0来保持对象.RELEASE：

package com.spring.data.couchbase.user;

import javax.persistence.Entity;

import org.springframework.data.annotation.Id;
import org.springframework.data.couchbase.core.mapping.Field;

@Entity
public class User {

@Id
private String id;

public String getId() {
    return id;
}

public void setId(String id) {
    this.id = id;
}

@Field("lastName")
private String lastName;

public String getLastName() {
    return lastName;
}

public void setLastname(String lastName) {
    this.lastName = lastName;
}

public String getFirstName() {
    return firstName;
}

public void setFirstName(String firstName) {
    this.firstName = firstName;
}

@Field("firstName")
private String firstName;

   }

当我尝试将对象保存到couchbase数据库时，我得到一个MappingException . 全栈如下 . AFAIK entiry似乎很好 . spring-data-couchbase还有什么额外的预期？

Exception in thread "main" org.springframework.data.mapping.model.MappingException: An ID property is needed, but not found on this entity.
at org.springframework.data.couchbase.core.convert.MappingCouchbaseConverter.write(MappingCouchbaseConverter.java:316)
at org.springframework.data.couchbase.core.convert.MappingCouchbaseConverter.write(MappingCouchbaseConverter.java:50)
at org.springframework.data.couchbase.core.CouchbaseTemplate.save(CouchbaseTemplate.java:298)
at org.springframework.data.couchbase.core.CouchbaseTemplate.save(CouchbaseTemplate.java:149)
at org.springframework.data.couchbase.repository.support.SimpleCouchbaseRepository.save(SimpleCouchbaseRepository.java:82)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:358)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:343)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.data.couchbase.repository.support.ViewPostProcessor$ViewInterceptor.invoke(ViewPostProcessor.java:80)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy18.save(Unknown Source)
at com.spring.data.couchbase.user.MyService.doWork(MyService.java:27)
at com.spring.data.couchbase.user.Main.main(Main.java:17)
java spring-data couchbase spring-data-couchbase

3 回答

  • 0

    正如作者所回答的，您需要具有非空的ID，因为Couchbase本身通过其唯一ID标识每个Document . 您应该在ID之上添加验证，以确保它始终不为空且不为空 .

    回复于
  • 1

    我认为问题如下：

    1：你的类上有@Entity注释，这是一个JPA注释 . 请改用org.springframework.data.couchbase.core.mapping.Document注释

    2：CouchBase存储名为_id的id，因此您应该将类中的该字段重命名为_id（根据http://developer.couchbase.com/documentation/mobile/current/develop/guides/couchbase-lite/native-api/document/index.html#special-properties）

    回复于
  • 1

    您可以使用以下内容

    import com.couchbase.client.java.repository.annotation.Field;
import com.couchbase.client.java.repository.annotation.Id;

@Id
@GeneratedValue(strategy = GenerationStrategy.UNIQUE)
public String id;
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