@JsonIgnoreProperties转换实体时忽略json中不存在的字段

package com.*******.****.drp.util;
import java.io.IOException;
 
import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.map.DeserializationConfig;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
 
import lombok.extern.slf4j.Slf4j;
/** 
* @Description:
* @author :******| paranoia_zk@yeah.net 
* @date ：2017年6月8日 上午10:32:04 
*/
@Slf4j
public class JacksonUtil {
    private final static ObjectMapper objectMapper = new ObjectMapper();
 
    static {
        objectMapper.configure(JsonParser.Feature.ALLOW_COMMENTS, true);
        objectMapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
        objectMapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
        objectMapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_CONTROL_CHARS, true);
        objectMapper.configure(JsonParser.Feature.INTERN_FIELD_NAMES, true);
        objectMapper.configure(JsonParser.Feature.CANONICALIZE_FIELD_NAMES, true);
        objectMapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    }
 
    public static String encode(Object obj) {
        try {
            return objectMapper.writeValueAsString(obj);
        } catch (JsonGenerationException e) {
            log.error("encode(Object)", e); //$NON-NLS-1$
        } catch (JsonMappingException e) {
            log.error("encode(Object)", e); //$NON-NLS-1$
        } catch (IOException e) {
            log.error("encode(Object)", e); //$NON-NLS-1$
        }
        return null;
    }
 
    /**
     * 将json string反序列化成对象
     *
     * @param json
     * @param valueType
     * @return
     */
    public static <T> T decode(String json, Class<T> valueType) {
        try {
            return objectMapper.readValue(json, valueType);
        } catch (JsonParseException e) {
            log.error("decode(String, Class<T>)", e);
        } catch (JsonMappingException e) {
            log.error("decode(String, Class<T>)", e);
        } catch (IOException e) {
            log.error("decode(String, Class<T>)", e);
        }
        return null;
    }
}