Map工具类 博客分类： J2SE

import java.io.Serializable;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.math.BigDecimal;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author 
 * 2017-09-25
 */
public class MapConvertUtil implements Serializable{
	
	/**
	 * 序列化
	 */
	private static final long serialVersionUID = -1581756576497606672L;
	
	private static final Logger LOGGER = LoggerFactory.getLogger(MapConvertUtil.class);
	
	public static Double getDoubleValue(Map<String, Object> map, String key) {
		BigDecimal value = getMapValue(map, key, BigDecimal.class);
		return value == null ? 0d : value.doubleValue();
	}
	
	public static Float getFloatValue(Map<String, Object> map, String key) {
		BigDecimal value = getMapValue(map, key, BigDecimal.class);
		return value == null ? 0f : value.floatValue();
	}

	public static Date getDateValue(Map<String, Object> map, String key) {
		Object value = map.get(key);
		return value == null ? new Date() : new Date(value.toString());
	}

	public static Integer getIntegerValue(Map<String, Object> map, String key) {
		Object value = map.get(key);
		if(value != null)
		{
			try {
				return Integer.valueOf(value.toString());
			} catch (Exception e) {
				LOGGER.error("exception message:", e);
				return 0;
			}
		}
		return 0;
	}
	
	public static Long getLongValue(Map<String, Object> map, String key) {
		Object value = map.get(key);
		if(value != null)
		{
			try {
				return Long.valueOf(value.toString());
			} catch (Exception e) {
				LOGGER.error("exception message:", e);
				return 0l;
			}
		}
		return 0l;
	}
	
	public static String getStringValue(Map<String, Object> map, String key) {
		String value = getMapValue(map, key, String.class);
		return value == null ? "" : value;
	}

	public static <T> T getMapValue(Map<String, Object> map, String key, Class<T> clazz) {
		Object value = map.get(key);
		if (value == null) {
			return null;
		}
		return clazz.cast(value);
	}

	public static Map<String, Object> PO2Map(Object o){
		Map<String, Object> map = new HashMap<String, Object>();
		Field[] fields = null;
		try {
			//子类属性
			fields = o.getClass().getDeclaredFields();
			for (Field field : fields) {
				field.setAccessible(true);
				String proName = field.getName();
				Object proValue = field.get(o);
				map.put(proName, proValue);
			}
			
			//父类属性
			fields = o.getClass().getSuperclass().getDeclaredFields();
			for (Field field : fields) {
				field.setAccessible(true);
				String proName = field.getName();
				Object proValue = field.get(o);
				map.put(proName, proValue);
			}
		} catch (Exception e) {
			LOGGER.error("exception message:", e);
		}
		return map;
	}

	public static Object map2PO(Map<String,Object> map,Object o){
		try {
			if (!map.isEmpty()) {
				for (Map.Entry<String,Object> m : map.entrySet()) {
					Object v = "";
					if (!m.getKey().isEmpty()) {
						v = m.getValue();
					}
					Field[] fields = null;
					//子类属性
					fields = o.getClass().getDeclaredFields();
					for (Field field : fields) {
						int mod = field.getModifiers();
						if(Modifier.isStatic(mod) || Modifier.isFinal(mod)){
							continue;
						}
						if (field.getName().equals(m.getKey())) {
							field.setAccessible(true);
							field.set(o, v);
						}
	
					}
					
					//父类属性
					fields = o.getClass().getSuperclass().getDeclaredFields();
					for (Field field : fields) {
						int mod = field.getModifiers();
						if(Modifier.isStatic(mod) || Modifier.isFinal(mod)){
							continue;
						}
						if (field.getName().equals(m.getKey())) {
							field.setAccessible(true);
							field.set(o, v);
						}
	
					}
				}
			}
		}catch (Exception e) {
			LOGGER.error("exception message:", e);
		}
		return o;
	}
	
	public static Map<String,Object> getMsgResultMap(final String msg)
	{
		return new HashMap<String, Object>(){/**
			 */
			private static final long serialVersionUID = 3883115499389307532L;

		{
		    put("code", "0");
		    put("msg", msg);
	    }};
	}
	
	public static Map<String,Object> getDataResultMap(final Object data)
	{
		return new HashMap<String, Object>(){/**
			 */
			private static final long serialVersionUID = 2024109428179733317L;

		{
		    put("code", "1");
		    put("msg", "success");
		    put("data", data);
	    }};
	}
}