log.warn("Parse object to String error", e);returnnull; } }/*** Object转json字符串 将转换的json结果格式化 * *@paramobj *@param<T> *@return*/publicstatic<T>String obj2StringPretty(T obj) {if(obj ==null) {returnnull; }try{returnobjinstanceofString ?(String) obj : objectMapper.writ...
public static void conventJsonToObject(){ String json = "{\"name\":\"周润发\",\"age\":23,\"birthday\":560016000000,\"email\":\"zhourunfa@qq.com\"}"; ObjectMapper objectMapper = new ObjectMapper(); User user = null; try { user = objectMapper.readValue(json, User.class); } catch ...
public static <T>String objectToJsonPretty(T obj){ if(obj == null){ return null; } try { return obj instanceof String ? (String) obj : objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(obj); } catch (Exception e) { log.warn("Parse Object to Json error",e); e.printS...
遍历某个JsonNode的key和value(value可能是字符串也可能是子jsonNode,但如果value是jsonNode数组的话,是无法读取的) Iterator<Map.Entry<String,JsonNode>> jsonNodes =jsonNode.fields();while(jsonNodes.hasNext()) { Map.Entry<String, JsonNode> node =jsonNodes.next(); System.err.println("遍历获取key:...
public static void main(String[] args) { System.out.println(toJson(new user(1, "张三", "男", new Date())); } public static String toJson(Object obj){ String re=null; Gson gson=new Gson(); re= gson.toJson(obj); return re; } 代码语言:javascript 代码运行次数:0 复制Cloud Studio...
("Parse Object to Json error",e);e.printStackTrace();returnnull;}}/*** json转对象* @param src* @param clazz* @param <T>* @return*/publicstatic<T>TjsonToObject(Stringsrc,Class<T>clazz){if(StringUtils.isEmpty(src)||clazz==null){returnnull;}try{returnclazz.equals(String.class)?(T...
0 How to parse JSON to list of strings? 14 Jackson parse string field as JSON 0 How to parse JSON String to java object with jackson? 0 Parse Json String using jackson Parser 0 convert to string to json 1 How to parse JSON string into Map? 1 Parsing string to JsonObject in...
Infinite recursion (StackOverflowError) (through reference chain: dm.jdbc.desc.EPGroup["props"]->dm...
Very simply, to parse the JSON String we only need anObjectMapper: @TestpublicvoidwhenParsingJsonStringIntoJsonNode_thenCorrect()throwsJsonParseException, IOException {StringjsonString="{"k1":"v1","k2":"v2"}";ObjectMappermapper=newObjectMapper();JsonNodeactualObj=mapper.readTree(jsonString); assert...
(jsonFile); JsonToken jsonToken = jsonParser.nextToken(); while (jsonToken != JsonToken.END_ARRAY) { String fieldname = jsonParser.getCurrentName(); if ("identifier".equals(fieldname)) { jsonToken = jsonParser.nextToken(); currMap.put(fieldname, jsonParser.getText()); } // 无用的 ...