Groovy - JsonSlurper解析JSON文件

Question

我有一個類似於下面結構的JSON文檔，我試圖在Groovy中解析它。 基本上每個學校（學校信息），我想抓住SCHOOL_COUNTRY和其他領域。 我正在嘗試下面的代碼，但它沒有返回我需要的東西。 對於列出的每所學校（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)
    }
}

所以基本上每個學校都打印出學校的名稱。 JSON結構：

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

Answer 1

我不確定它是否是唯一的錯誤，但你不能在each讀取schoolInfo.SCHOOL_NAME 。 SCHOOL_NAME是財產json.SCHOOL_INFO所以it.SCHOOL_NAME是訪問它正確的方式。 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

Answer 2

干得好：

import groovy.json.JsonSlurper

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

def slurper = new JsonSlurper().parseText(t)
slurper.each {
    println it.SCHOOL_INFO."SCHOOL NAME"
}

我不確定學校名稱是否應該_簽名。

Answer 3

println it.SCHOOL_INFO."SCHOOL NAME"

這應該沒有_符號。