如何构造 HTTP GET 请求来过滤 JSON 响应？答案

【问题标题】：How to construct an HTTP GET request to filter a JSON response?如何构造 HTTP GET 请求来过滤 JSON 响应？
【发布时间】：2015-12-17 11:36:53
【问题描述】：

我正在使用 Curl 发出以下 HTTP GET 请求：

卷曲http://rest.ensembl.org/variation/human/rs56116432?content-type=application

它返回以下 JSON 对象：

{"source":"Variants (including SNPs and indels) imported from dbSNP","mappings":[{"location":"9:133256042-133256042","assembly_name":"GRCh38","end":133256042,"seq_region_name":"9","strand":1,"coord_system":"chromosome","allele_string":"C/T","start":133256042},{"location":"CHR_HG2030_PATCH:133256189-133256189","assembly_name":"GRCh38","end":133256189,"seq_region_name":"CHR_HG2030_PATCH","strand":-1,"coord_system":"chromosome","allele_string":"C/T","start":133256189}],"name":"rs56116432","MAF":"0.00259585","ambiguity":"Y","var_class":"SNP","synonyms":[],"evidence":["Multiple_observations","Frequency","1000Genomes","ESP","ExAC"],"ancestral_allele":"C","minor_allele":"T","most_severe_consequence":"missense_variant"

是否可以构造HTTP请求，只返回键"most_severe_consequence"的值给浏览器，而不是在请求返回后过滤数据？

API documentation 不包含具体示例。

【问题讨论】：

标签： json rest curl

【解决方案1】：

您可以添加一个查询参数，以获取所需的响应组件。

例如http://rest.ensembl.org/variation/human/rs56116432?content-type=application;bit_i_care_about=most_severe_consequence

或者，如果您知道自己只需要一个字段，则可以有一个额外的路径元素....

http://rest.ensembl.org/variation/human/rs56116432/most_severe_consequence?content-type=application

【讨论】：

您似乎在建议服务可以执行 OP 要求的方式，而不是它实际支持的方式。