- import java.lang.reflect.Field;
- import java.lang.reflect.Method;
- import java.util.HashMap;
- import java.util.Map;
- import org.apache.log4j.Logger;
- public class DomainEquals {
- /**
- * 日志操作类
- */
- private static Logger logger = Logger.getLogger(DomainEquals.class);
- public DomainEquals() {
- }
- /**
- * 比较两个BEAN或MAP对象的值是否相等
- * 如果是BEAN与MAP对象比较时MAP中的key值应与BEAN的属性值名称相同且字段数目要一致
- * @param source
- * @param target
- * @return
- */
- public static boolean domainEquals(Object source, Object target) {
- if (source == null || target == null) {
- return false;
- }
- boolean rv = true;
- if (source instanceof Map) {
- rv = mapOfSrc(source, target, rv);
- } else {
- rv = classOfSrc(source, target, rv);
- }
- logger.info("THE EQUALS RESULT IS " + rv);
- return rv;
- }
- /**
- * 源目标为MAP类型时
- * @param source
- * @param target
- * @param rv
- * @return
- */
- private static boolean mapOfSrc(Object source, Object target, boolean rv) {
- HashMap<String, String> map = new HashMap<String, String>();
- map = (HashMap) source;
- for (String key : map.keySet()) {
- if (target instanceof Map) {
- HashMap<String, String> tarMap = new HashMap<String, String>();
- tarMap = (HashMap) target;
- if(tarMap.get(key)==null){
- rv = false;
- break;
- }
- if (!map.get(key).equals(tarMap.get(key))) {
- rv = false;
- break;
- }
- } else {
- String tarValue = getClassValue(target, key) == null ? "" : getClassValue(target, key).toString();
- if (!tarValue.equals(map.get(key))) {
- rv = false;
- break;
- }
- }
- }
- return rv;
- }
- /**
- * 源目标为非MAP类型时
- * @param source
- * @param target
- * @param rv
- * @return
- */
- private static boolean classOfSrc(Object source, Object target, boolean rv) {
- Class<?> srcClass = source.getClass();
- Field[] fields = srcClass.getDeclaredFields();
- for (Field field : fields) {
- String nameKey = field.getName();
- if (target instanceof Map) {
- HashMap<String, String> tarMap = new HashMap<String, String>();
- tarMap = (HashMap) target;
- String srcValue = getClassValue(source, nameKey) == null ? "" : getClassValue(source, nameKey)
- .toString();
- if(tarMap.get(nameKey)==null){
- rv = false;
- break;
- }
- if (!tarMap.get(nameKey).equals(srcValue)) {
- rv = false;
- break;
- }
- } else {
- String srcValue = getClassValue(source, nameKey) == null ? "" : getClassValue(source, nameKey)
- .toString();
- String tarValue = getClassValue(target, nameKey) == null ? "" : getClassValue(target, nameKey)
- .toString();
- if (!srcValue.equals(tarValue)) {
- rv = false;
- break;
- }
- }
- }
- return rv;
- }
- /**
- * 根据字段名称取值
- * @param obj
- * @param fieldName
- * @return
- */
- public static Object getClassValue(Object obj, String fieldName) {
- if (obj == null) {
- return null;
- }
- try {
- Class beanClass = obj.getClass();
- Method[] ms = beanClass.getMethods();
- for (int i = 0; i < ms.length; i++) {
- // 非get方法不取
- if (!ms[i].getName().startsWith("get")) {
- continue;
- }
- Object objValue = null;
- try {
- objValue = ms[i].invoke(obj, new Object[] {});
- } catch (Exception e) {
- logger.info("反射取值出错:" + e.toString());
- continue;
- }
- if (objValue == null) {
- continue;
- }
- if (ms[i].getName().toUpperCase().equals(fieldName.toUpperCase())
- || ms[i].getName().substring(3).toUpperCase().equals(fieldName.toUpperCase())) {
- return objValue;
- } else if (fieldName.toUpperCase().equals("SID")
- && (ms[i].getName().toUpperCase().equals("ID") || ms[i].getName().substring(3).toUpperCase()
- .equals("ID"))) {
- return objValue;
- }
- }
- } catch (Exception e) {
- // logger.info("取方法出错!" + e.toString());
- }
- return null;
- }
- public static void main(String args[]) {
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/280620134361.html
来源: http://www.codesnippet.cn/detail/280620134361.html