Groovy - JsonSlurper解析JSON文件

Question

我有一个类似于下面结构的JSON文档,我试图在Groovy中解析它.基本上每个学校(学校信息),我想抓住SCHOOL_COUNTRY其他领域.我正在尝试下面的代码,但它没有返回我需要的东西.对于列出的每所学校(1,000),我只想抓住特定的部分,例如:

def parseJSON(long id) {

    JSONFile fileInstance = JSONFile.get(id)
    def json = new JsonSlurper().setType(RELAX).parse(new FileReader(fileInstance.filePath))
    def schoolInfo = json.SCHOOL_INFO
    def schoolName = json.SCHOOL_INFO.SCHOOL_NAME
    schoolInfo.each {
       render(schoolInfo.SCHOOL_NAME)
    }
}

所以基本上每个学校都打印出学校的名称.JSON结构:

[{
    "SCHOOL_INFO": {
        "SCHOOL_COUNTRY": "Finland",   
        "SCHOOL NAME": "Findland Higher Learning"              
     },
     "LOCATION": {                  
         "LONGITUDE": "24.999",                   
         "LATITUDE": "61.001"
     }
}]

Answer 1

我不确定这是否是唯一的错误,但你无法读schoolInfo.SCHOOL_NAME入each.SCHOOL_NAME是属性,json.SCHOOL_INFO所以it.SCHOOL_NAME是访问它的正确方法.看看下面的例子:

import groovy.json.JsonSlurper

def jsonAsText = '''[{
    "SCHOOL_INFO": {
        "SCHOOL_COUNTRY": "Finland",   
        "SCHOOL NAME": "Findland Higher Learning"              
    },
    "LOCATION": {                  
        "LONGITUDE": "24.999",                   
        "LATITUDE": "61.001"
    }
}]'''

def json = new JsonSlurper().parseText(jsonAsText)

def schoolInfo= json.SCHOOL_INFO
schoolInfo.each{
    println it."SCHOOL NAME"
}

它打印:

Findland Higher Learning