转List、Map使用方式是objectMapper.readValue(String jsonStr, TypeReference<T> valueTypeRef);例子如下: List:objectMapper.readValue(json, new TypeReference<List<JsonPerson>>() {});Map:objectMapper.readValue(json, new TypeReference<Map<String, JsonPerson>>() {}); 使用constructType方式 转化对象,就是提...
1、String转成List //此对象可放在外面ObjectMapperom =newObjectMapper();//使用TypeReference,这里是要重新实现的,不要忘记后面的花括号List<VoucherOrganization> orgList = om.readValue(orgJson,newTypeReference<List<VoucherOrganization>>() { }); 2、转成对象比较简单后面有时间再补充 3、对象转json ObjectMapp...
步骤1:将字符串反序列化为JSON对象 // 导入相关包importcom.fasterxml.jackson.databind.ObjectMapper;// 将字符串反序列化为JSON对象StringjsonString="[\"apple\",\"banana\",\"cherry\"]";ObjectMapperobjectMapper=newObjectMapper();List<String>list=objectMapper.readValue(jsonString,List.class); 1. 2. 3....
publicstaticvoidmain(String[]args){Map<String,Object>map=newHashMap<>();map.put("a",1000);map.put("b",2000);ObjectMapper mapper=newObjectMapper();try{// map 转 json 字符串String s=mapper.writeValueAsString(map);System.out.println(s);// json 字符串 转 mapMap map1=mapper.readValue(s...
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<...
ObjectMapper oMapper=newObjectMapper(); Student obj=newStudent(); obj.setName("mkyong"); obj.setAge(34); obj.setSkills(Arrays.asList("java","node"));//object -> MapMap<String, Object> map = oMapper.convertValue(obj, Map.class); ...
您需要将字符串反序列化为User对象。我在这里使用了JacksonObjectMapper(你可以很好地使用其他的，比如Gson...
其中Arrays.asList(),数组转集合的方法,用法参考其他博客如下:http://blog.csdn.net/cntanghai/article/details/7188296. 其中将string转json格式的方法如下: publicstatic<T> T readValue(String content, Class<T>valueType) {if(objectMapper ==null) ...
private ObjectMapper objectMapper; Abc abc = objectMapper.readValue("{\"a\": 1000396667}", Abc.class); 如果碰见泛型怎么办? 比方说List<E> import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; ...
private ObjectMapper objectMapper; Abc abc = objectMapper.readValue("{\"a\": 1000396667}", Abc.class); 如果碰见泛型怎么办? 比方说List<E> import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.ObjectMapper; ...