【问题标题】:Referencing a local relative file in a JSON Schema?在 JSON Schema 中引用本地相关文件?
【发布时间】:2014-04-01 20:18:44
【问题描述】:

我正在为 REST Web 服务构建 JSON。然而,架构已经增长到超过 1300 行,我想将它拆分到多个文件中。我正在使用json-schema-validator 版本 2.1.8 针对 JSON 示例响应文件夹对我的架构进行单元测试。

我知道您在当前文件中定义了导入类型,例如 { "$ref": "#/definitions/MyBool" },但是如果我想将 MyBool 的定义移动到另一个文件中,例如 Common.schema.json,那么我将如何引用它?

我尝试了{ "$ref": "Common.schema.json/definitions/MyBoolean" }{ "$ref": "./Common.schema.json/defintion/MyBoolean" }{ "$ref": "file://./Common.schema.json/definitions/MyBoolean" },但它们都不起作用。

Does JSON Schema validation in common-js utils support references?”上的答案似乎应该可以,但我似乎无法正确使用语法。

我正在加载架构:

JsonNode mySchema = JsonLoader.fromReader(   new InputStreamReader(  JsonSchemaTest.class.getResourceAsStream( "/json/schema/MySchema.schema.json" )  )   );

然后验证它:

JsonSchemaFactory.byDefault().getValidator().validate(   schema,   new InputStreamReader(  getClass().getResourceAsStream( "/json/sample/MyJsonSample.json" )  )   ).isSuccess();

FWIW MyBool 看起来像:

"MyBool": {
    "type": "object",
    "properties": {
        "value" :{
            "type": "string",
            "enum": [ "true", "false", "file not found" ]
        }
    },
    "required": ["value"],
    "additionalProperties": false
}

当我不尝试提取 MyBool 时,架构会正确验证我的所有 JSON 样本。


我收到的异常是:

com.github.fge.jsonschema.core.exceptions.ProcessingException: fatal: unable to dereference URI "file:/Common.schema.json/definitions/MyBool#"
    level: "fatal"
    uri: "file:/Common.schema.json/definitions/MyBool#"
    exceptionMessage: "\\Common.schema.json\\definitions\\MyBool (The system cannot find the path specified)"

    at com.github.fge.jsonschema.core.load.URIManager.getContent(URIManager.java:108)
    at com.github.fge.jsonschema.core.load.SchemaLoader$1.load(SchemaLoader.java:108)
    at com.github.fge.jsonschema.core.load.SchemaLoader$1.load(SchemaLoader.java:103)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195)
    at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821)
    at com.github.fge.jsonschema.core.load.SchemaLoader.get(SchemaLoader.java:165)
    at com.github.fge.jsonschema.core.load.RefResolver.rawProcess(RefResolver.java:113)
    at com.github.fge.jsonschema.core.load.RefResolver.rawProcess(RefResolver.java:50)
    at com.github.fge.jsonschema.core.processing.RawProcessor.process(RawProcessor.java:76)
    at com.github.fge.jsonschema.core.processing.RawProcessor.process(RawProcessor.java:40)
    at com.github.fge.jsonschema.core.processing.ProcessorChain$ProcessorMerger.process(ProcessorChain.java:188)
    at com.github.fge.jsonschema.core.processing.ProcessingResult.of(ProcessingResult.java:78)
    at com.github.fge.jsonschema.core.processing.CachingProcessor$1.load(CachingProcessor.java:127)
    at com.github.fge.jsonschema.core.processing.CachingProcessor$1.load(CachingProcessor.java:119)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195)
    at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821)
    at com.github.fge.jsonschema.core.processing.CachingProcessor.process(CachingProcessor.java:108)
    at com.github.fge.jsonschema.processors.validation.ValidationChain.process(ValidationChain.java:106)
    at com.github.fge.jsonschema.processors.validation.ValidationChain.process(ValidationChain.java:55)
    at com.github.fge.jsonschema.core.processing.ProcessorMap$Mapper.process(ProcessorMap.java:165)
    at com.github.fge.jsonschema.core.processing.ProcessingResult.of(ProcessingResult.java:78)
    at com.github.fge.jsonschema.core.processing.CachingProcessor$1.load(CachingProcessor.java:127)
    at com.github.fge.jsonschema.core.processing.CachingProcessor$1.load(CachingProcessor.java:119)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195)
    at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821)
    at com.github.fge.jsonschema.core.processing.CachingProcessor.process(CachingProcessor.java:108)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:83)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.processObject(ValidationProcessor.java:179)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:121)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.processArray(ValidationProcessor.java:149)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:119)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.processObject(ValidationProcessor.java:179)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:121)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:48)
    at com.github.fge.jsonschema.keyword.validator.draftv4.OneOfValidator.validate(OneOfValidator.java:67)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:100)
    at com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:48)
    at com.github.fge.jsonschema.core.processing.ProcessingResult.of(ProcessingResult.java:78)
    at com.github.fge.jsonschema.main.JsonValidator.validate(JsonValidator.java:103)
    at com.github.fge.jsonschema.main.JsonValidator.validate(JsonValidator.java:123)
    at com.initech.ws.json.BaseJsonSchemaTest.jsonFileShouldValidate(BaseJsonSchemaTest.java:84)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.junit.runners.Suite.runChild(Suite.java:127)
    at org.junit.runners.Suite.runChild(Suite.java:26)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.junit.runners.Suite.runChild(Suite.java:127)
    at org.junit.runners.Suite.runChild(Suite.java:26)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:74)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:211)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:67)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

【问题讨论】:

  • 您好!你能展示你用来加载你的模式的代码吗?另外,您使用的是哪个版本?
  • @fge 我已经用这些细节更新了问题,但我还没有机会尝试你的建议。
  • 相对路径是否意味着您可以使用 .. 之类的东西?
  • @CMCDragonkai 是的

标签: java json jsonschema json-schema-validator


【解决方案1】:

您需要的是能够使用绝对 URI 来引用您的文件。

假设您使用的是稳定版本(即 2.0.2),请使用 this method 加载您的架构。

鉴于您的文件所在的位置,请使用:

final JsonSchema schema 
    = factory.getJsonSchema("resource:/json/schema/MySchema.schema.json");

这意味着此模式中的 URI 解析将相对于此(加载)URI;所以,参考你的MyBoolean.json,你会这样做:

{
    "$ref": "MyBoolean.json#/pointer/into/file"
}

如果它位于,例如,/json/schema/subschemas,那么你会写:

{
    "$ref": "subschemas/MyBoolean.json#/pointer/into/file"
}

父母也工作等等。


请注意,如自述文件中所述,2.1.x 是开发版本!我目前正在修改 API...

【讨论】:

    【解决方案2】:

    以下解决方案对我有用。路径是相对于我运行 mvn 目标的位置。

    "items": {
                    "type": "object",
                    "$ref": "file:src/xyz/abc/lmn/DeviceRecord.json"
             }
    

    这里file: 是您执行maven 目标的路径。

    【讨论】:

    • 但是当您在 Web 服务器上部署架构时,file: 协议不会导致问题吗?
    【解决方案3】:

    老问题,但我能够通过这样做来解决这个问题

    given().when().get("...")
                    .then()
                    .statusCode(200)
                    .body(matchesJsonSchemaInClasspath("schemas/the-array-schema.json"));
    

    然后在the-array-schema.json(在/resources/schemas目录下),我有

    {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "array",
      "items": {
        "$ref": "the-object-schema.json"
      }
    }
    

    其中the-object-schema.json 也在/resources/schemas 目录中。

    【讨论】:

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