关于java:Jackson-里-objectMapperreadValue-如何转换泛型-ListE

Jackson (com.fasterxml.jackson) 的 readValue 办法能够将json字符串转换成指定的对象

一般用法

import com.fasterxml.jackson.databind.ObjectMapper;class Abc {    Long a;        public Long getA() {        return a;    }    public void setA(Long a) {        this.a= a;    }}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;List<Abc> abc = objectMapper.readValue("[{\"a\": 1000396667}]", new TypeReference<List<Abc>>() {});