Question

在Debian wheezy实例上，我刚刚将我的独立Neo4j服务器从版本2.0.2迁移到2.1.1（我在java-7-openjdk-amd64上运行。）。由于我在REST API上遇到批量查询问题：

在空数据库中，我尝试了以下测试：

首先我创建了一个节点：

curl -H Accept:application/json -H Content-Type:application/json -X POST -d '{"name":"Steven"}' http://localhost:7474/db/data/node

节点已成功创建：

    {
      "extensions" : {
      },
      "paged_traverse" : "http://localhost:7474/db/data/node/0/paged/traverse/{returnType}{?pageSize,leaseTime}",
      "labels" : "http://localhost:7474/db/data/node/0/labels",
      "outgoing_relationships" : "http://localhost:7474/db/data/node/0/relationships/out",
      "traverse" : "http://localhost:7474/db/data/node/0/traverse/{returnType}",
      "all_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/all/{-list|&|types}",
      "property" : "http://localhost:7474/db/data/node/0/properties/{key}",
      "all_relationships" : "http://localhost:7474/db/data/node/0/relationships/all",
      "self" : "http://localhost:7474/db/data/node/0",
      "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/out/{-list|&|types}",
      "properties" : "http://localhost:7474/db/data/node/0/properties",
      "incoming_relationships" : "http://localhost:7474/db/data/node/0/relationships/in",
      "incoming_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/in/{-list|&|types}",
      "create_relationship" : "http://localhost:7474/db/data/node/0/relationships",
      "data" : {
        "name" : "Steven"
    }

然后我尝试获取新节点：

curl -H Accept:application/json -H Content-Type:application/json -X GET http://localhost:7474/db/data/node/0

给了我预期的结果：

    {
      "extensions" : {
      },
      "paged_traverse" : "http://localhost:7474/db/data/node/0/paged/traverse/{returnType}{?pageSize,leaseTime}",
      "labels" : "http://localhost:7474/db/data/node/0/labels",
      "outgoing_relationships" : "http://localhost:7474/db/data/node/0/relationships/out",
      "traverse" : "http://localhost:7474/db/data/node/0/traverse/{returnType}",
      "all_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/all/{-list|&|types}",
      "property" : "http://localhost:7474/db/data/node/0/properties/{key}",
      "all_relationships" : "http://localhost:7474/db/data/node/0/relationships/all",
      "self" : "http://localhost:7474/db/data/node/0",
      "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/out/{-list|&|types}",
      "properties" : "http://localhost:7474/db/data/node/0/properties",
      "incoming_relationships" : "http://localhost:7474/db/data/node/0/relationships/in",
      "incoming_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/in/{-list|&|types}",
      "create_relationship" : "http://localhost:7474/db/data/node/0/relationships",
      "data" : {
        "name" : "Steven"
    }

但是批处理中的相同请求给了我以下错误

curl -H Accept:application/json -H Content-Type:application/json -X POST -d '[{"method":"GET","to":"/node/0","id":0}]' http://localhost:7474/db/data/batch

{
  "exception" : "NullPointerException",
  "fullname" : "java.lang.NullPointerException",
  "stacktrace" : [ "org.neo4j.server.web.Jetty9WebServer.invokeDirectly(Jetty9WebServer.java:339)", "org.neo4j.server.rest.batch.NonStreamingBatchOperations.invoke(NonStreamingBatchOperations.java:55)", "org.neo4j.server.rest.batch.BatchOperations.performRequest(BatchOperations.java:201)", "org.neo4j.server.rest.batch.BatchOperations.parseAndPerform(BatchOperations.java:171)", "org.neo4j.server.rest.batch.NonStreamingBatchOperations.performBatchJobs(NonStreamingBatchOperations.java:48)", "org.neo4j.server.rest.web.BatchOperationService.batchProcess(BatchOperationService.java:126)", "org.neo4j.server.rest.web.BatchOperationService.performBatchOperations(BatchOperationService.java:76)", "java.lang.reflect.Method.invoke(Method.java:606)", "org.neo4j.server.rest.transactional.TransactionalRequestDispatcher.dispatch(TransactionalRequestDispatcher.java:139)", "java.lang.Thread.run(Thread.java:744)"]

我看到的唯一日志是http：

127.0.0.1 - - [03 / Jun / 2014：14：56：17 +0200]“POST / db / data / node HTTP / 1.1”201 1160“ - ”“curl / 7.26.0” 127.0.0.1 - - [03 / Jun / 2014：14：56：33 +0200]“GET / db / data / node / 0 HTTP / 1.1”200 1160“ - ”“curl / 7.26.0” 127.0.0.1 - - [03 / Jun / 2014：14：56：47 +0200]“POST / db / data / batch HTTP / 1.1”500 1000“ - ”“curl / 7.26.0”

任何帮助都将不胜感激。

谢谢。

编辑：流模式下的完全相同的请求（即标题X-Stream设置为true）具有不同的行为：它提供预期数据但状态为500.

curl -H X-Stream:true -H Accept:application/json -H Content-Type:application/json -X POST -d '[{"method":"GET","to":"/node/0","id":0}]' http://localhost:7474/db/data/batch

[
  {
    "id":0,
    "from":"/node/0",
    "body":
      {
        "extensions":{},
        "paged_traverse":"http://localhost:7474/db/data/node/0/paged/traverse/{returnType}{?pageSize,leaseTime}",
        "labels":"http://localhost:7474/db/data/node/0/labels",
        "outgoing_relationships":"http://localhost:7474/db/data/node/0/relationships/out",
        "traverse":"http://localhost:7474/db/data/node/0/traverse/{returnType}",
        "all_typed_relationships":"http://localhost:7474/db/data/node/0/relationships/all/{-list|&|types}",
        "property":"http://localhost:7474/db/data/node/0/properties/{key}",
        "all_relationships":"http://localhost:7474/db/data/node/0/relationships/all",
        "self":"http://localhost:7474/db/data/node/0",
        "properties":"http://localhost:7474/db/data/node/0/properties",
        "outgoing_typed_relationships":"http://localhost:7474/db/data/node/0/relationships/out/{-list|&|types}",
        "incoming_relationships":"http://localhost:7474/db/data/node/0/relationships/in",
        "incoming_typed_relationships":"http://localhost:7474/db/data/node/0/relationships/in/{-list|&|types}",
        "create_relationship":"http://localhost:7474/db/data/node/0/relationships",
        "data":
          {
            "name":"Steven"
          }
      },
    "status":500
  }
]

使用Neo4j 2.1.1在REST API上发生批处理错误

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