public static String objectToString(Object obj) throws Exception { return mapper.writeValueAsString(obj); } // 将Map转成指定的Bean public static Object mapToBean(Map map, Class clazz) throws Exception { return mapper.readValue(objectToString(map), clazz); } // 将Bean转成Map public static Ma...
假设您有一个JSON字符串,您想将其转换为一个Map<String, Object>对象。这里是一个例子: java String jsonString = "{\"name\":\"John\", \"age\":30, \"city\":\"New York\"}"; try { Map<String, Object> map = objectMapper.readValue(jsonString, Map.class); System.out.pri...
背景 有个场景就是要把pojo转成map<String,Object>,用于展示,但是自己写的感觉太丑了,一个pojo就得写一个。 比如下面这样 image.png 想看看怎么改进 jackson的支持 参照refer,发现jackson是支持pojo和map互转的(之前只是看前辈用过,以为只是和json String互相转换用的,结果发现jackson功能太强大了,可以参照知乎的ref...
String>toMap(Object obj){// Convert the object to an intermediate form (map of strings to JSON...
Map<String,Object>userData=mapper.readValue(newFile("user.json"),Map.class); System.out.println(userData); // 写入JSON数据 userData=newHashMap<String,Object>(); Map<String,String>nameStruct=newHashMap<String,String>(); nameStruct.put("first","Joe"); ...
public String ajaxTest(String data) throws JsonMappingException, IOException{ ObjectMapper om=new ObjectMapper(); Map<String,Object> map=om.readValue(data, Map.class); System.out.println(map.get("customer")); System.out.println("items"+map.get("items")); ...
//map转json对象 JSONObject json = new JSONObject(map); //json对象转Map Map map_1 = JSONObject.parseObject(strList, Map.class); //Map<String,Object> map_1 = (Map<String,Object>)jsonObject_1; 此方法也行 Gson //map转json对象 Gson gson = new Gson(); String jsonString_2 = gson....
public void testJackson() throws IOException { ObjectMapper mapper = new ObjectMapper(); File from = new File("albumnList.txt"); TypeReference<HashMap<String,Object>> typeRef = new TypeReference<HashMap<String,Object>>() {}; HashMap<String,Object> o = mapper.readValue(from, typeRef); Syst...
String 转 Map Map resultMap = JSON.parseObject(str); List<User> 转 List<Map> Object data = resultMap.get("data"); List<Map> dataList = JSONObject.parseObject(JSONObject.toJSONString(data), List.class); ———
private String name; private String email; private String address; private Birthday birthday; // getter、setter @Override public String toString() { returnthis.name +"#" +this.id +"#" +this.address +"#" +this.birthday +"#" +this.email; ...