mybatis OGNL应用

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<if test="@Ognl@isNotEmpty(name)">AND A.NAME like '%${name}%'</if><if test="@Ognl@isNotEmpty(mobile)">AND A.MOBILE = #{mobile}</if>

public class Ognl {/** * 可以用于判断 Map,Collection,String,Array是否为空 *  * @param o * @return */@SuppressWarnings("unchecked")public static boolean isEmpty(Object o) throws IllegalArgumentException {if (o == null)return true;if (o instanceof String) {return StringUtils.isEmpty((String) o);} else if (o instanceof Collection) {return CollectionUtils.isEmpty((Collection) o);} else if (o.getClass().isArray()) {return ArrayUtils.isEmpty((Object[]) o);} else if (o instanceof Map) {MapUtils.isEmpty((Map) o);} else if (o instanceof Date) {return o == null;} else if (o instanceof Number) {return o == null;} else if (o instanceof Boolean) {return o == null;} else {throw new IllegalArgumentException("Illegal argument type,must be : Map,Collection,Array,String. but was:"+ o.getClass());}return false;}/** * 可以用于判断 Map,Collection,String,Array是否不为空 *  * @param c * @return */public static boolean isNotEmpty(Object o) {return !isEmpty(o);}public static boolean isNotEmpty(Object... objects) {if (objects == null)return false;for (Object obj : objects) {if (isEmpty(obj)) {return false;};}return true;}public static boolean isNotBlank(Object o) {return !isBlank(o);}public static boolean isNumber(Object o) {if (o instanceof Number) {return true;} else if (o instanceof String) {return NumberUtils.isNumber((String) o);} else {return false;}}public static boolean isBlank(Object o) {return StringUtils.isBlank((String) o);}public static boolean isBlank(String str) {return StringUtils.isBlank(str);}}

Ognl.java 必须放在class目录，也就是没有包名。