封装Jackson，实现JSON String＜-＞Java Object转换的Mapper

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import com.fasterxml.jackson.databind.util.JSONPObject;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.Collection;
import java.util.Map;
import java.util.TimeZone;

/**
 * 简单封装Jackson，实现JSON String<->Java Object转换的Mapper.
 * <p>
 * 可以直接使用公共示例JsonMapper.INSTANCE, 也可以使用不同的builder函数创建实例，封装不同的输出风格,
 * <p>
 * 不要使用GSON, 在对象稍大时非常缓慢.
 * <p>
 * 注意: 需要参考本模块的POM文件，显式引用jackson.
 *
 * @author wyh
 */
public class JsonMapper {
   
    /**
     * 日志
     */
    private static Logger logger = LoggerFactory.getLogger(JsonMapper.class)