Jackson (com.fasterxml.jackson) 的 readValue 方法能夠將json字符串轉換成指定的對象
普通用法
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);
若是遇見泛型怎麼辦? 比方說 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>>() {});