Nifi 处理器未正确解析 JSON
Nifi processor is not parsing JSON correctly
我正在使用 EvaluateJsonPath 从 JSON 中提取一个特定值。我正在使用以下 JSON 路径表达式：
$.data[?(@.containerType == 'SOURCE' && @.path == 'SOURCE_KYLO_DATALAKE')].id
这是 JSON 文档，我在 :
上调用 JSONPath
{"data":[{"id":"dc18bf87-c5a6-4600-9584-e79fb988b1d0","path":["@Rakesh.Prasad@diageo.com"],"tag":"0","type":"CONTAINER","containerType":"HOME"},{"id":"42e52055-4deb-4d5d-942f-4e1c4e48c35e","path":["BPM"],"tag":"3","type":"CONTAINER","containerType":"SPACE"},{"id":"49e3d118-e4f9-41ef-ad97-6b2745c75c4f","path":["DATABRICKS_USAGE_REPORT"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"613f52e9-64df-4c9c-b083-c282f349eb4e","path":["LIGHTHOUSE"],"tag":"3","type":"CONTAINER","containerType":"SPACE"},{"id":"f57bcd83-4d0e-481e-b880-0fb8b20798a1","path":["MDM"],"tag":"2","type":"CONTAINER","containerType":"SPACE"},{"id":"745cd2d5-7303-4c0a-9cab-f5205b9eec90","path":["NIELSEN"],"tag":"2","type":"CONTAINER","containerType":"SPACE"},{"id":"b40da338-c429-4bb3-b2ef-51295a143fc8","path":["PowerBI"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"dffd025c-b0f0-4b9b-9060-da4aa54204d1","path":["REFERENCE_DATA"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"14f9759a-2059-4728-acad-fe01f129f148","path":["SAP_ODP_MASTERDATA"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"063bb5e8-041a-4f69-98a3-d2509d5e89d0","path":["TRAX"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"9c737147-6632-4328-bf10-ba4959a2806f","path":["TRAX_API"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"99167858-17ca-406f-b887-62af3d0da68a","path":["DEPLETION"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"52f17de1-a66e-4f08-9077-04acf3914663","path":["SOURCE_ADLS_NIELSEN_PROD"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"bea0de9c-b579-46bd-89ff-4b9497c3910e","path":["SOURCE_KYLO_DATALAKE"],"tag":"5","type":"CONTAINER","containerType":"SOURCE"},{"id":"20985e83-cd31-469e-9a17-1e586bccfb27","path":["SOURCE_LIGHTHOUSE_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"47406901-c9ce-4fce-b0ab-37b07338949b","path":["SOURCE_MDM_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"f1feff7d-8ada-46bb-a5fe-0283a2c746b3","path":["SOURCE_MDS_UAT"],"tag":"0","type":"CONTAINER","containerType":"SOURCE"},{"id":"48a5d1b6-8d32-449d-a317-d242f2394e71","path":["SOURCE_NIELSEN_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"32eaeeb5-60d5-4d87-a983-1e71e3543920","path":["SOURCE_PROD_BPM"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"f4af00a5-a536-4272-93cb-891ec13ef8e4","path":["SOURCE_SAP_MDS_STAGING"],"tag":"3","type":"CONTAINER","containerType":"SOURCE"},{"id":"7250d605-75a9-4ef2-a01b-55c2bcb44dd9","path":["SOURCE_TRAX_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"38a8293e-72f4-42c2-be66-667b21a1ac55","path":["SOURCE_KYLO_HIVE2"],"tag":"10","type":"CONTAINER","containerType":"SOURCE"},{"id":"95cb9f2f-3421-451a-8635-bb8487dc1872","path":["dwlprd1"],"tag":"7","type":"CONTAINER","containerType":"SOURCE"},{"id":"ac9334e4-daf2-4c6f-92f1-0452440fb737","path":["dwlprd2"],"tag":"5","type":"CONTAINER","containerType":"SOURCE"},{"id":"c27af9bd-075b-4fb8-bcd4-8450f26ff7f9","path":["SOURCE_ADLS_NIELSEN_DEPLETION_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"}]}
当我在 JSONPath 在线测试工具（见附图）上使用上面的配置（那个特定的 JSONPath 查询）时，我得到了预期的结果。但不知何故，nifi 正在返回空数组。
模板：
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FlowFiles</key><value>false</value></entry><entry><key>generate-ff-custom-text</key><value>{"data":[{"id":"dc18bf87-c5a6-4600-9584-e79fb988b1d0","path":["@Rakesh.Prasad@diageo.com"],"tag":"0","type":"CONTAINER","containerType":"HOME"},{"id":"42e52055-4deb-4d5d-942f-4e1c4e48c35e","path":["BPM"],"tag":"3","type":"CONTAINER","containerType":"SPACE"},{"id":"49e3d118-e4f9-41ef-ad97-6b2745c75c4f","path":["DATABRICKS_USAGE_REPORT"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"613f52e9-64df-4c9c-b083-c282f349eb4e","path":["LIGHTHOUSE"],"tag":"3","type":"CONTAINER","containerType":"SPACE"},{"id":"f57bcd83-4d0e-481e-b880-0fb8b20798a1","path":["MDM"],"tag":"2","type":"CONTAINER","containerType":"SPACE"},{"id":"745cd2d5-7303-4c0a-9cab-f5205b9eec90","path":["NIELSEN"],"tag":"2","type":"CONTAINER","containerType":"SPACE"},{"id":"b40da338-c429-4bb3-b2ef-51295a143fc8","path":["PowerBI"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"dffd025c-b0f0-4b9b-9060-da4aa54204d1","path":["REFERENCE_DATA"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"14f9759a-2059-4728-acad-fe01f129f148","path":["SAP_ODP_MASTERDATA"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"063bb5e8-041a-4f69-98a3-d2509d5e89d0","path":["TRAX"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"9c737147-6632-4328-bf10-ba4959a2806f","path":["TRAX_API"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"99167858-17ca-406f-b887-62af3d0da68a","path":["DEPLETION"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"52f17de1-a66e-4f08-9077-04acf3914663","path":["SOURCE_ADLS_NIELSEN_PROD"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"bea0de9c-b579-46bd-89ff-4b9497c3910e","path":["SOURCE_KYLO_DATALAKE"],"tag":"5","type":"CONTAINER","containerType":"SOURCE"},{"id":"20985e83-cd31-469e-9a17-1e586bccfb27","path":["SOURCE_LIGHTHOUSE_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"47406901-c9ce-4fce-b0ab-37b07338949b","path":["SOURCE_MDM_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"f1feff7d-8ada-46bb-a5fe-0283a2c746b3","path":["SOURCE_MDS_UAT"],"tag":"0","type":"CONTAINER","containerType":"SOURCE"},{"id":"48a5d1b6-8d32-449d-a317-d242f2394e71","path":["SOURCE_NIELSEN_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"32eaeeb5-60d5-4d87-a983-1e71e3543920","path":["SOURCE_PROD_BPM"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"f4af00a5-a536-4272-93cb-891ec13ef8e4","path":["SOURCE_SAP_MDS_STAGING"],"tag":"3","type":"CONTAINER","containerType":"SOURCE"},{"id":"7250d605-75a9-4ef2-a01b-55c2bcb44dd9","path":["SOURCE_TRAX_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"38a8293e-72f4-42c2-be66-667b21a1ac55","path":["SOURCE_KYLO_HIVE2"],"tag":"10","type":"CONTAINER","containerType":"SOURCE"},{"id":"95cb9f2f-3421-451a-8635-bb8487dc1872","path":["dwlprd1"],"tag":"7","type":"CONTAINER","containerType":"SOURCE"},{"id":"ac9334e4-daf2-4c6f-92f1-0452440fb737","path":["dwlprd2"],"tag":"5","type":"CONTAINER","containerType":"SOURCE"},{"id":"c27af9bd-075b-4fb8-bcd4-8450f26ff7f9","path":["SOURCE_ADLS_NIELSEN_DEPLETION_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"}]}</value></entry><entry><key>character-set</key><value>UTF-8</value></entry></properties><runDurationMillis>0</runDurationMillis><schedulingPeriod>1 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sec</yieldDuration></config><name>EvaluateJsonPath</name><relationships><autoTerminate>false</autoTerminate><name>failure</name></relationships><relationships><autoTerminate>false</autoTerminate><name>matched</name></relationships><relationships><autoTerminate>false</autoTerminate><name>unmatched</name></relationships><state>STOPPED</state><style/><type>org.apache.nifi.processors.standard.EvaluateJsonPath</type></processors></snippet><timestamp>09/24/2018 06:03:42 EDT</timestamp></template>
当您在path数组中搜索值时，将SOURCE_KYLO_DATALAKE包含在[](array)中，那么处理器只会将匹配的id值作为输出内容。
更改 Eval JsonPath 属性 值如下
数据集
$.data[?(@.containerType == 'SOURCE' && @.path == ['SOURCE_KYLO_DATALAKE'])].id
配置：
输出流文件内容：
["bea0de9c-b579-46bd-89ff-4b9497c3910e"]
UPDATE:
我用过 NiFi-1.7.1，EvaluateJson 表达式在这个版本中工作正常。
但是，如果您使用的是其他版本的 NiFi，则
1.if 你在数组中有 only one element 然后在你的 EvaluateJsonPath 处理器中使用下面的表达式。
数据集
$.data[?(@.containerType == 'SOURCE' && @.path[0] == 'SOURCE_KYLO_DATALAKE')].id
2.If 那么数组中的元素不止一个
流量：
流程说明：
1.SplitJson
- 将数据数组拆分为单独的消息
- 将 JsonPathExpression 配置为
$.data
2.EvaluateJsonPath
- 提取所需内容并作为流文件的属性保留
现在我们将 id,containerType,path 值作为 flowfile 的属性
3.RouteOnAttribute:
在此处理器中，我们使用 NiFi 表达式语言检查属性值
添加新的属性为
需要
${containerType:equals("SOURCE"):and(${anyDelineatedValue("${path:replace('[',''):replace(']','')}",","):equals('"SOURCE_KYLO_DATALAKE"')})}
将所需的关系提供给 ReplaceText 处理器
4.ReplaceText
- 现在我们将 id 值替换为流文件内容
现在我们将从 ReplaceText 处理器的输出流文件内容中获取 id 值。
如果可能，将 NiFi 版本升级到 1.7.1 那么您就不需要执行所有这些解决方法:)
我正在使用 EvaluateJsonPath 从 JSON 中提取一个特定值。我正在使用以下 JSON 路径表达式：
$.data[?(@.containerType == 'SOURCE' && @.path == 'SOURCE_KYLO_DATALAKE')].id
这是 JSON 文档，我在 :
上调用 JSONPath{"data":[{"id":"dc18bf87-c5a6-4600-9584-e79fb988b1d0","path":["@Rakesh.Prasad@diageo.com"],"tag":"0","type":"CONTAINER","containerType":"HOME"},{"id":"42e52055-4deb-4d5d-942f-4e1c4e48c35e","path":["BPM"],"tag":"3","type":"CONTAINER","containerType":"SPACE"},{"id":"49e3d118-e4f9-41ef-ad97-6b2745c75c4f","path":["DATABRICKS_USAGE_REPORT"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"613f52e9-64df-4c9c-b083-c282f349eb4e","path":["LIGHTHOUSE"],"tag":"3","type":"CONTAINER","containerType":"SPACE"},{"id":"f57bcd83-4d0e-481e-b880-0fb8b20798a1","path":["MDM"],"tag":"2","type":"CONTAINER","containerType":"SPACE"},{"id":"745cd2d5-7303-4c0a-9cab-f5205b9eec90","path":["NIELSEN"],"tag":"2","type":"CONTAINER","containerType":"SPACE"},{"id":"b40da338-c429-4bb3-b2ef-51295a143fc8","path":["PowerBI"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"dffd025c-b0f0-4b9b-9060-da4aa54204d1","path":["REFERENCE_DATA"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"14f9759a-2059-4728-acad-fe01f129f148","path":["SAP_ODP_MASTERDATA"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"063bb5e8-041a-4f69-98a3-d2509d5e89d0","path":["TRAX"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"9c737147-6632-4328-bf10-ba4959a2806f","path":["TRAX_API"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"99167858-17ca-406f-b887-62af3d0da68a","path":["DEPLETION"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"52f17de1-a66e-4f08-9077-04acf3914663","path":["SOURCE_ADLS_NIELSEN_PROD"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"bea0de9c-b579-46bd-89ff-4b9497c3910e","path":["SOURCE_KYLO_DATALAKE"],"tag":"5","type":"CONTAINER","containerType":"SOURCE"},{"id":"20985e83-cd31-469e-9a17-1e586bccfb27","path":["SOURCE_LIGHTHOUSE_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"47406901-c9ce-4fce-b0ab-37b07338949b","path":["SOURCE_MDM_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"f1feff7d-8ada-46bb-a5fe-0283a2c746b3","path":["SOURCE_MDS_UAT"],"tag":"0","type":"CONTAINER","containerType":"SOURCE"},{"id":"48a5d1b6-8d32-449d-a317-d242f2394e71","path":["SOURCE_NIELSEN_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"32eaeeb5-60d5-4d87-a983-1e71e3543920","path":["SOURCE_PROD_BPM"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"f4af00a5-a536-4272-93cb-891ec13ef8e4","path":["SOURCE_SAP_MDS_STAGING"],"tag":"3","type":"CONTAINER","containerType":"SOURCE"},{"id":"7250d605-75a9-4ef2-a01b-55c2bcb44dd9","path":["SOURCE_TRAX_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"38a8293e-72f4-42c2-be66-667b21a1ac55","path":["SOURCE_KYLO_HIVE2"],"tag":"10","type":"CONTAINER","containerType":"SOURCE"},{"id":"95cb9f2f-3421-451a-8635-bb8487dc1872","path":["dwlprd1"],"tag":"7","type":"CONTAINER","containerType":"SOURCE"},{"id":"ac9334e4-daf2-4c6f-92f1-0452440fb737","path":["dwlprd2"],"tag":"5","type":"CONTAINER","containerType":"SOURCE"},{"id":"c27af9bd-075b-4fb8-bcd4-8450f26ff7f9","path":["SOURCE_ADLS_NIELSEN_DEPLETION_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"}]}
当我在 JSONPath 在线测试工具（见附图）上使用上面的配置（那个特定的 JSONPath 查询）时，我得到了预期的结果。但不知何故，nifi 正在返回空数组。
模板：
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FlowFiles</key><value>false</value></entry><entry><key>generate-ff-custom-text</key><value>{"data":[{"id":"dc18bf87-c5a6-4600-9584-e79fb988b1d0","path":["@Rakesh.Prasad@diageo.com"],"tag":"0","type":"CONTAINER","containerType":"HOME"},{"id":"42e52055-4deb-4d5d-942f-4e1c4e48c35e","path":["BPM"],"tag":"3","type":"CONTAINER","containerType":"SPACE"},{"id":"49e3d118-e4f9-41ef-ad97-6b2745c75c4f","path":["DATABRICKS_USAGE_REPORT"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"613f52e9-64df-4c9c-b083-c282f349eb4e","path":["LIGHTHOUSE"],"tag":"3","type":"CONTAINER","containerType":"SPACE"},{"id":"f57bcd83-4d0e-481e-b880-0fb8b20798a1","path":["MDM"],"tag":"2","type":"CONTAINER","containerType":"SPACE"},{"id":"745cd2d5-7303-4c0a-9cab-f5205b9eec90","path":["NIELSEN"],"tag":"2","type":"CONTAINER","containerType":"SPACE"},{"id":"b40da338-c429-4bb3-b2ef-51295a143fc8","path":["PowerBI"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"dffd025c-b0f0-4b9b-9060-da4aa54204d1","path":["REFERENCE_DATA"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"14f9759a-2059-4728-acad-fe01f129f148","path":["SAP_ODP_MASTERDATA"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"063bb5e8-041a-4f69-98a3-d2509d5e89d0","path":["TRAX"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"9c737147-6632-4328-bf10-ba4959a2806f","path":["TRAX_API"],"tag":"0","type":"CONTAINER","containerType":"SPACE"},{"id":"99167858-17ca-406f-b887-62af3d0da68a","path":["DEPLETION"],"tag":"1","type":"CONTAINER","containerType":"SPACE"},{"id":"52f17de1-a66e-4f08-9077-04acf3914663","path":["SOURCE_ADLS_NIELSEN_PROD"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"bea0de9c-b579-46bd-89ff-4b9497c3910e","path":["SOURCE_KYLO_DATALAKE"],"tag":"5","type":"CONTAINER","containerType":"SOURCE"},{"id":"20985e83-cd31-469e-9a17-1e586bccfb27","path":["SOURCE_LIGHTHOUSE_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"47406901-c9ce-4fce-b0ab-37b07338949b","path":["SOURCE_MDM_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"f1feff7d-8ada-46bb-a5fe-0283a2c746b3","path":["SOURCE_MDS_UAT"],"tag":"0","type":"CONTAINER","containerType":"SOURCE"},{"id":"48a5d1b6-8d32-449d-a317-d242f2394e71","path":["SOURCE_NIELSEN_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"32eaeeb5-60d5-4d87-a983-1e71e3543920","path":["SOURCE_PROD_BPM"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"f4af00a5-a536-4272-93cb-891ec13ef8e4","path":["SOURCE_SAP_MDS_STAGING"],"tag":"3","type":"CONTAINER","containerType":"SOURCE"},{"id":"7250d605-75a9-4ef2-a01b-55c2bcb44dd9","path":["SOURCE_TRAX_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"},{"id":"38a8293e-72f4-42c2-be66-667b21a1ac55","path":["SOURCE_KYLO_HIVE2"],"tag":"10","type":"CONTAINER","containerType":"SOURCE"},{"id":"95cb9f2f-3421-451a-8635-bb8487dc1872","path":["dwlprd1"],"tag":"7","type":"CONTAINER","containerType":"SOURCE"},{"id":"ac9334e4-daf2-4c6f-92f1-0452440fb737","path":["dwlprd2"],"tag":"5","type":"CONTAINER","containerType":"SOURCE"},{"id":"c27af9bd-075b-4fb8-bcd4-8450f26ff7f9","path":["SOURCE_ADLS_NIELSEN_DEPLETION_UAT"],"tag":"1","type":"CONTAINER","containerType":"SOURCE"}]}</value></entry><entry><key>character-set</key><value>UTF-8</value></entry></properties><runDurationMillis>0</runDurationMillis><schedulingPeriod>1 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sec</yieldDuration></config><name>EvaluateJsonPath</name><relationships><autoTerminate>false</autoTerminate><name>failure</name></relationships><relationships><autoTerminate>false</autoTerminate><name>matched</name></relationships><relationships><autoTerminate>false</autoTerminate><name>unmatched</name></relationships><state>STOPPED</state><style/><type>org.apache.nifi.processors.standard.EvaluateJsonPath</type></processors></snippet><timestamp>09/24/2018 06:03:42 EDT</timestamp></template>
当您在path数组中搜索值时，将SOURCE_KYLO_DATALAKE包含在[](array)中，那么处理器只会将匹配的id值作为输出内容。
更改 Eval JsonPath 属性 值如下
数据集
$.data[?(@.containerType == 'SOURCE' && @.path == ['SOURCE_KYLO_DATALAKE'])].id
配置：
输出流文件内容：
["bea0de9c-b579-46bd-89ff-4b9497c3910e"]
UPDATE:
我用过 NiFi-1.7.1，EvaluateJson 表达式在这个版本中工作正常。
但是，如果您使用的是其他版本的 NiFi，则
1.if 你在数组中有 only one element 然后在你的 EvaluateJsonPath 处理器中使用下面的表达式。
数据集
$.data[?(@.containerType == 'SOURCE' && @.path[0] == 'SOURCE_KYLO_DATALAKE')].id
2.If 那么数组中的元素不止一个
流量：
流程说明：
1.SplitJson
- 将数据数组拆分为单独的消息
- 将 JsonPathExpression 配置为
$.data
2.EvaluateJsonPath
- 提取所需内容并作为流文件的属性保留
3.RouteOnAttribute:
在此处理器中，我们使用 NiFi 表达式语言检查属性值
添加新的属性为
需要
${containerType:equals("SOURCE"):and(${anyDelineatedValue("${path:replace('[',''):replace(']','')}",","):equals('"SOURCE_KYLO_DATALAKE"')})}
将所需的关系提供给 ReplaceText 处理器
4.ReplaceText
- 现在我们将 id 值替换为流文件内容
现在我们将从 ReplaceText 处理器的输出流文件内容中获取 id 值。
如果可能，将 NiFi 版本升级到 1.7.1 那么您就不需要执行所有这些解决方法:)