我有一个包含多个JSONObject的JSONArray
[
{
"record":[
{
"timeStamp":"2018-10-11T05:36:51+00:00",
"code":200,
"text":"OK"
},
{
"hostname":"qwe",
"address":"192.168.1.1",
"type":"A",
"priority":"0",
"ttl":"3600"
},
{
"hostname":"www",
"address":"test.com",
"type":"CNAME",
"priority":"0",
"ttl":"3600"
}
]
},
{
"record":[
{
"timeStamp":"2018-10-11T05:36:52+00:00",
"code":200,
"text":"OK"
},
{
"hostname":"rty",
"address":"192.168.1.2",
"type":"A",
"priority":"0",
"ttl":"300"
},
{
"hostname":"*",
"address":"test",
"type":"CNAME",
"priority":"0",
"ttl":"3600"
}
]
}
]
如何解析此JSONArray并将其导出为CSV文件。
这是我到目前为止尝试过的
File file=new File("/home/administrator/Desktop/test.csv");
String csv = jsonArray;
FileUtils.writeStringToFile(file, csv);
System.out.println("CSV created.");
我想要的输出是
timeStamp,code,text,hostname,address,type,priority,ttl,hostname,address,type,priority,ttl
2018-10-11T05:36:51+00:00,200,OK,qwe,192.168.1.1,A,0,300,www,test.com,CNAME,0,3600
2018-10-11T05:36:52+00:00,200,OK,rty,192.168.1.2,A,0,300,*,test,CNAME,0,3600
鉴于上面的JSONArray,是否可能有这样的输出?
答案 0 :(得分:0)
抱歉,过去30分钟来我一直在敲击键盘,但我终于完成了,这里是代码。
public static String getCSVData() throws IOException, JSONException {
Path jsonFile = Paths.get("json");
String json = new String(Files.readAllBytes(jsonFile), StandardCharsets.UTF_8);
JSONArray jsonArray = new JSONArray(json.trim());
List<List<String>> jsonArrays = new ArrayList<>();
for (int i = 0; i < jsonArray.length(); i++) {
List<String> jsonObjects = new ArrayList<>();
JSONArray record = jsonArray.getJSONObject(i).getJSONArray("record");
for (int i2 = 0; i2 < record.length(); i2++) {
JSONObject jsonObject = record.getJSONObject(i2);
if (i2 == 0) {
jsonObjects.add(jsonObject.get("timeStamp").toString());
jsonObjects.add(jsonObject.get("code").toString());
jsonObjects.add(jsonObject.get("text").toString());
} else {
jsonObjects.add(jsonObject.get("hostname").toString());
jsonObjects.add(jsonObject.get("address").toString());
jsonObjects.add(jsonObject.get("type").toString());
jsonObjects.add(jsonObject.get("priority").toString());
jsonObjects.add(jsonObject.get("ttl").toString());
}
}
jsonArrays.add(jsonObjects);
}
StringBuilder stringBuilder = new StringBuilder("timeStamp,code,text,hostname,address,type,priority,ttl,hostname,address,type,priority,ttl\n");
for(List<String> arrays : jsonArrays){
stringBuilder.append(StringUtils.join(arrays, ",")).append("\n");
}
return stringBuilder.toString().trim();
}
为解释代码,我首先遍历第一个Array,然后获取第一个JSONArray的jsonObject,然后从我通过遍历第一个JSONArray然后在遍历记录和获取所有项目并将其保存到ArrayList中。并通过JDK提供的StringUtils将它们加入。
如果要将其写入文件,请使用此
Files.write(Paths.get("YOUR CSV FILE"), getCSVData().getBytes(StandardCharsets.UTF_8));
我使用的所有代码均由JDK和org.json提供。
在我们打印出getCSVDate()之后;输出为:
timeStamp,code,text,hostname,address,type,priority,ttl,hostname,address,type,priority,ttl
2018-10-11T05:36:51+00:00,200,OK,qwe,192.168.1.1,A,0,3600,www,test.com,CNAME,0,3600
2018-10-11T05:36:52+00:00,200,OK,rty,192.168.1.2,A,0,300,*,test,CNAME,0,3600