Map<String, Object> testMap = new HashMap<>(); testMap.put("name", "22"); testMap.put("age", 20); testMap.put("date", new Date()); testMap.put("student", new Student("hyl", 20, new Date())); String jsonStr = mapper.writeValueAsString(testMap); System.out.println(json...
Map<String, Object> testMap = new HashMap<>(); testMap.put("name", "22"); testMap.put("age", 20); testMap.put("date", new Date()); testMap.put("student", new Student("hyl", 20, new Date())); String jsonStr = mapper.writeValueAsString(testMap); System.out.println(json...
Map<String, Object> testMap =newHashMap<>(); testMap.put("name","merry"); testMap.put("age",30); testMap.put("date",newDate()); testMap.put("user",newXwjUser(1,"Hello World",newDate())); try{ String jsonStr = mapper.writeValueAsString(testMap); System.out.println("Map转...
const m2 = new Map([['a', '1'],['b','2']]) 1. 2. 2.键的类型 Object:键类型必须是string或者Symbol,如果非String类型,会进行数据类型转换 Map:键可以是任意类型,包括对象,数组,函数等。不会进行数据类型转换。 在添加键值对时,会通过严格相等 === 来判断键属性是否已经存在 特例:NaN NaN ===...
{state.GLOBAL_MAP_THREAD.set(newObjectMapper());}Map map=state.GLOBAL_MAP_THREAD.get().readValue(json,Map.class);returnmap;}@BenchmarkpublicMaplocalTest()throws Exception{ObjectMapper objectMapper=newObjectMapper();Map map=objectMapper.readValue(json,Map.class);returnmap;}publicstaticvoidmain(String...
returnmap; } publicstaticvoidmain(String[] args)throwsException{ Options opts =newOptionsBuilder .include(ObjectMapperTest.class.getSimpleName) .resultFormat(ResultFormatType.CSV) .build; newRunner(opts).run; } } 测试结果如下。 Benchmark Mode Cnt Score Error Units ...
(); Map map = objectMapper.readValue(json, Map.class); return map; } public static void main(String[] args) throws Exception { Options opts = new OptionsBuilder() .include(ObjectMapperTest.class.getSimpleName()) .resultFormat(ResultFormatType.CSV) .build(); new Runner(opts).run(); } ...
Map<String, Object> testMap = new HashMap<>(); testMap.put("name", "22"); testMap.put("age", 20); testMap.put("date", new Date()); testMap.put("student", new Student("hyl", 20, new Date())); String jsonStr = mapper.writeValueAsString(testMap); ...
简单数据绑定:比如绑定int类型、List、Map等… 代码语言:javascript 代码运行次数:0 运行 AI代码解释 @Testpublicvoidtest1()throws JsonProcessingException{ObjectMapper objectMapper=newObjectMapper();// 绑定简单类型 和 Map类型Integer age=objectMapper.readValue("1",int.class);Map map=objectMapper.readValue("{\...
对于写来说比较简单,一个writeValueAsString(obj)方法走天下;但对于读来说,除了使用readValue(String content, Class<T> valueType)自动完成数据绑定外,需要特别注意泛型擦除问题:若反序列化成为一个集合类型(Collection or Map),泛型会被擦除,此时你应该使用readValue(String content, TypeReference<T> valueTypeRef...