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Jackson 工具包

There is a newer version: 1.0.2

package com.mokung.pomegranate.jackson.handler.getter;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.NullNode;
import com.fasterxml.jackson.databind.node.TextNode;
import com.mokung.pomegranate.jackson.handler.Getter;

/**
 *
 * @author mokung
 */
public class StringGetter implements Getter {

    @Override
    public String getter(JsonNode valueNode, ObjectMapper mapper, boolean cast) {
        if (valueNode instanceof TextNode) {
            return valueNode.asText();
        }
        if (!cast || valueNode == null || valueNode instanceof NullNode) {
            return null;
        }
        return valueNode.asText();
    }
}