jsonString是要解析的Json字符串。 new TypeReference<List<Map<String, Object>>>(){}定义解析后的数据类型,这里是List<Map>。 2. 完整代码示例 // 导入Jackson库importcom.fasterxml.jackson.databind.ObjectMapper;importcom.fasterxml.jackson.core.type.TypeReference;publicclassJsonToListMapExample{publicstaticvoid...
可以直接返回resultMapList即可。完整代码如下所示: importjava.util.ArrayList;importjava.util.List;importjava.util.Map;importorg.json.JSONArray;importorg.json.JSONObject;publicclassJsonUtils{publicstaticList<Map<String,Object>>jsonToListMap(StringjsonString){JSONArrayjsonArray=newJSONArray(jsonString);List...
List<Map<String, Object>> map = g.fromJson(jsonStr,newTypeToken<List<Map<String, Object>>>(){}.getType());
JSONObject jsonMap = JSONObject.fromObject(jsonMapStr); Iterator<String> it = jsonMap.keys(); while(it.hasNext()) { String key = (String) it.next(); SimpleUser u = (SimpleUser) JSONObject.toBean( JSONObject.fromObject(jsonMap.get(key)), SimpleUser.class); map.put(key, u); } re...
Map<String,Object> obj = JSON.parseObject(s, Map.class); System.out.println(obj); System.out.println("---"); // list 转 json 字符串 String s1 = JSON.toJSONString(map); System.out.println(s1); // json 字符串 转 list List
JavaType valueType=objectMapper.getTypeFactory().constructParametricType(HashMap.class,String.class,Object.class);HashMap<String,Object>map=objectMapper.readValue(str,valueType); 将JSON字符串转为List JavaType valueType=objectMapper.getTypeFactory().constructParametricType(ArrayList.class,Person.class);List<...
在写代码时,经常会遇到各转类型之间互相转换,比如json转换为Map,jsonArray转List集合,List集合转json,现在整理一个工具类,方便日后查阅。 代码语言:javascript 复制 importjava.util.HashMap;importjava.util.Iterator;importjava.util.List;importjava.util.Map;importorg.apache.commons.lang.StringUtils;importorg.zgr...
= new Gson(); Type type = new TypeToken<ArrayList<Map<String, String>>>() {}.getType(); ArrayList<Map<String, String>> data = gson.fromJson(reader, type); // convert back to JSON string from object System.out.println(new GsonBuilder().setPrettyPrinting().create().toJson(data)); ...
1.json转对象 2.json转List 3.json转数组 4。json转HashMap 5.object转json importcom.fasterxml.jackson.databind.DeserializationFeature;importcom.fasterxml.jackson.databind.ObjectMapper;importcom.fasterxml.jackson.databind.SerializationFeature;importcom.fasterxml.jackson.databind.type.ArrayType;importcom.fasterxml....