jacksonUtil工具类

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.util.List;
import java.util.Map;

/**
 * Jackson工具类
 */
public class JacksonUtil {

    private static ObjectMapper mapper = new ObjectMapper();

    public static String bean2Json(Object data) {
        try {
            String result = mapper.writeValueAsString(data);
            return result;
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static <T> T json2Bean(String jsonData, Class<T> beanType) {
        try {
            T result = mapper.readValue(jsonData, beanType);
            return result;
        } catch (Exception e) {
            e.printStackTrace();
        }

        return null;
    }

    public static <T> List<T> json2List(String jsonData, Class<T> beanType) {
        Ja