SpringData Neo4J REST:使用@Indexed（unique=true）时出现运行时异常

我通过REST使用SpringData和Neo4j，当我添加@Indexed（unique=true）时，我看到了一个异常。这不会在embedded中引发异常，如果删除unique=true，也不会在REST中引发异常。即使数据库为空（没有节点和索引），也会发生这种情况

有什么想法吗

package com.mycompany;

import org.springframework.data.neo4j.annotation.GraphId;
import org.springframework.data.neo4j.annotation.Indexed;
import org.springframework.data.neo4j.annotation.NodeEntity;

@NodeEntity
public class Person {
  @GraphId
  private Long id;

  @Indexed(unique=true) private String name; // <<<-- does not error if I remove unique-true)

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public Long getId() {
    return id;
  }

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

  @Override
  public int hashCode() {
    int hash = 7;
    hash = 23 * hash + (this.name != null ? this.name.hashCode() : 0);
    return hash;
  }

  @Override
  public boolean equals(Object obj) {
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    final Person other = (Person) obj;
    if ((this.name == null) ? (other.name != null) : !this.name.equals(other.name)) {
      return false;
    }
    return true;
  }

}

为了完整起见，下面是测试代码：

package com.mycompany;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.neo4j.support.Neo4jTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;

import com.mycompany.Person;

import static org.junit.Assert.*;

@ContextConfiguration(locations = "classpath:testContext.xml")
@RunWith(SpringJUnit4ClassRunner.class)
public class NeoTest {

  @Autowired
  Neo4jTemplate template;

  @Test
  //@Transactional
  public void testSomething() {

    Person add = new Person();
    add.setName("Jorgan Jorgansen");
    add = template.save(add); 

    Person other = template.findOne(add.getId(), Person.class);
    assertNotNull("Retrieved entity is non-null", other);
    assertEquals("Retrieved entity equals saved entity", add, other);

  }
}

似乎是一个已知的bug，请参见。 无论如何，例外是关于_类型_索引，它与您在类中定义的索引无关，SDN使用它按类名检索对象

package com.mycompany;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.neo4j.support.Neo4jTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;

import com.mycompany.Person;

import static org.junit.Assert.*;

@ContextConfiguration(locations = "classpath:testContext.xml")
@RunWith(SpringJUnit4ClassRunner.class)
public class NeoTest {

  @Autowired
  Neo4jTemplate template;

  @Test
  //@Transactional
  public void testSomething() {

    Person add = new Person();
    add.setName("Jorgan Jorgansen");
    add = template.save(add); 

    Person other = template.findOne(add.getId(), Person.class);
    assertNotNull("Retrieved entity is non-null", other);
    assertEquals("Retrieved entity equals saved entity", add, other);

  }
}