我有以下 Json{ "Parent": { "pk1": "pv1", "pk2": "pv2", "Child": { "*": { "ck1": "cv1", "ck2": "cv2" } } }}現(xiàn)在我想刪除 "*":{} 但保留其內(nèi)容。預(yù)期的輸出是這樣的。{ "Parent": { "pk1": "pv1", "pk2": "pv2", "Child": { "ck1": "cv1", "ck2": "cv2" } }}我如何使用 Java Jackson 來實現(xiàn)這一目標(biāo)？
1 回答
不負相思意
TA貢獻1777條經(jīng)驗 獲得超10個贊
看下面的操作
ObjectMapper mapper = new ObjectMapper();
String file = "src/main/resources/yourjson.json";
JsonNode object = mapper.readTree(new File(file));
ObjectNode child = (ObjectNode) object.path("Parent").path("Child");
JsonNode star = child.path("*");
child.remove("*");
Iterator<String> startFieldNames = star.fieldNames();
while (startFieldNames.hasNext()) {
String startFieldName = startFieldNames.next();
child.set(startFieldName, star.get(startFieldName));
}
System.out.println(mapper.writer().withDefaultPrettyPrinter().writeValueAsString(object));
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