使用Java或Python根据特定条件从复杂的JSON中提取值

我对JSON一无所知。我有一个JSON文件，其中包含以下格式：

{“A”：
{“B”：[
{“C”：{“text”：“Command X”，“意为”：“Read”，“http”：“some link”，“Reference”：“Reference name”}，
{“C”：{“text”：“Command Y”，“意为”：“Write”，“http”：“some link”}，
{“C”：{“text”：“Command Z”，“意思是”：“Read”，“http”：“some link”}
],
“上下文”：{“上下文id”：“6429”，“章节id”：“123”，“句子id”：“456”，“标题”：“某物”，“章节id”：“6”，“章节标题”：“某物”，“章节id”：“77”，“章节编号”：“1”，“句子编号”：“12”，“段落id”：“0000”，“小节标题”：“某物”}，
“链接id”：“123”，“命令”：“XYZ”，“节链接”：“链接”，“命令编号”：“20.5.1”，“内容参考”：“某物”}
}
{“A”：
....
}

我需要摘录以下内容：

Command”：XYZ命令编号：20.5.1命令X含义：读取命令Z含义：读取

---

这意味着：对于每个

A

，如果命令的含义是

“Read”

，则提取命令，然后提取常规命令

“XYZ”“

和命令号。

还有Java库FasterXml，它具有用于读取和写入类似Json的ObjectMapper的对象。就有条件地提取对象而言，有条件的部分取决于您。

还有Java库FasterXml，其中包含用于读取和写入类似Json的ObjectMapper的对象。就条件提取对象而言，条件部分取决于您。

您可以导入

json

库并通过

python

使用

json.loads（）

函数：

import json
s = '{"A":{"B":[{"C":{"text":"Command X","meaning":"Read","http":"some link","Reference":"Reference name"}},{"C":{"text":"Command Y","meaning":"Write","http":"some link"}},{"C":{"text":"Command Z","meaning":"Read","http":"some link"}}],"context":{"context-id":"6429","section-id":"123","sentence-id":"456","title":"Something","chapter-id":"6","section-title":"Something","sentence-num-in-chapter":"30","section-id":"77","sentence-num-in-section":"1","num-of-sentences":"12","para-id":"0000","subsection-title":"something"},"link-id":"123","Command":"XYZ","Sectionlink":"link","command-number":"20.5.1","content-ref":"Something"}}'

ds = json.loads(s)

for dict in ds:
      if dict == 'A':
            A = ds[dict]
            for dict in A:
                  for B in A[dict]:
                        try:
                              if B['C']['meaning']=='Read':
                                    print("text : ",B['C']['text'])
                                    print("Command : ",A['Command'])
                                    print("command-number : ",A['command-number'])
                        except:
                              exit

---

注意：注意在

读取
含义
键的
值后删除空格字符。
您可以导入
json
库并通过
python
使用
json.loads（）
函数：

import json
s = '{"A":{"B":[{"C":{"text":"Command X","meaning":"Read","http":"some link","Reference":"Reference name"}},{"C":{"text":"Command Y","meaning":"Write","http":"some link"}},{"C":{"text":"Command Z","meaning":"Read","http":"some link"}}],"context":{"context-id":"6429","section-id":"123","sentence-id":"456","title":"Something","chapter-id":"6","section-title":"Something","sentence-num-in-chapter":"30","section-id":"77","sentence-num-in-section":"1","num-of-sentences":"12","para-id":"0000","subsection-title":"something"},"link-id":"123","Command":"XYZ","Sectionlink":"link","command-number":"20.5.1","content-ref":"Something"}}'

ds = json.loads(s)

for dict in ds:
      if dict == 'A':
            A = ds[dict]
            for dict in A:
                  for B in A[dict]:
                        try:
                              if B['C']['meaning']=='Read':
                                    print("text : ",B['C']['text'])
                                    print("Command : ",A['Command'])
                                    print("command-number : ",A['command-number'])
                        except:
                              exit

注意：在
Read
value of
means
key之后删除空格字符时要小心。
Python有专门的json模块来解析json文件。如果您喜欢python，请参阅python有专门的json模块来解析json文件。如果您喜欢python，请参考。非常感谢您的帮助，您的答案非常有效。欢迎@Zain感谢您的帮助，您的答案非常有效。欢迎@Zain