|
@@ -0,0 +1,96 @@
|
|
|
+package org.fouram.core.util;
|
|
|
+
|
|
|
+import org.springframework.beans.BeansException;
|
|
|
+import org.springframework.beans.FatalBeanException;
|
|
|
+import org.springframework.util.Assert;
|
|
|
+
|
|
|
+import java.beans.PropertyDescriptor;
|
|
|
+import java.lang.reflect.Method;
|
|
|
+import java.lang.reflect.Modifier;
|
|
|
+import java.util.*;
|
|
|
+
|
|
|
+/**
|
|
|
+ * 扩展spring的BeanUtils,增加拷贝属性排除null值的功能(注:String为null不考虑)
|
|
|
+ *
|
|
|
+ * @author 孙宇
|
|
|
+ */
|
|
|
+public class BeanUtils extends org.springframework.beans.BeanUtils {
|
|
|
+
|
|
|
+ public static void copyNotNullProperties(Object source, Object target, String[] ignoreProperties) throws BeansException {
|
|
|
+ copyNotNullProperties(source, target, null, ignoreProperties);
|
|
|
+ }
|
|
|
+
|
|
|
+ public static void copyNotNullProperties(Object source, Object target, Class<?> editable) throws BeansException {
|
|
|
+ copyNotNullProperties(source, target, editable, null);
|
|
|
+ }
|
|
|
+
|
|
|
+ public static void copyNotNullProperties(Object source, Object target) throws BeansException {
|
|
|
+ copyNotNullProperties(source, target, null, null);
|
|
|
+ }
|
|
|
+
|
|
|
+ @SuppressWarnings("rawtypes")
|
|
|
+ private static void copyNotNullProperties(Object source, Object target, Class<?> editable, String[] ignoreProperties) throws BeansException {
|
|
|
+
|
|
|
+ Assert.notNull(source, "Source must not be null");
|
|
|
+ Assert.notNull(target, "Target must not be null");
|
|
|
+
|
|
|
+ Class<?> actualEditable = target.getClass();
|
|
|
+ if (editable != null) {
|
|
|
+ if (!editable.isInstance(target)) {
|
|
|
+ throw new IllegalArgumentException("Target class [" + target.getClass().getName() + "] not assignable to Editable class [" + editable.getName() + "]");
|
|
|
+ }
|
|
|
+ actualEditable = editable;
|
|
|
+ }
|
|
|
+ PropertyDescriptor[] targetPds = getPropertyDescriptors(actualEditable);
|
|
|
+ List<String> ignoreList = (ignoreProperties != null) ? Arrays.asList(ignoreProperties) : null;
|
|
|
+
|
|
|
+ for (PropertyDescriptor targetPd : targetPds) {
|
|
|
+ if (targetPd.getWriteMethod() != null && (ignoreProperties == null || (!ignoreList.contains(targetPd.getName())))) {
|
|
|
+ PropertyDescriptor sourcePd = getPropertyDescriptor(source.getClass(), targetPd.getName());
|
|
|
+ if (sourcePd != null && sourcePd.getReadMethod() != null) {
|
|
|
+ try {
|
|
|
+ Method readMethod = sourcePd.getReadMethod();
|
|
|
+ if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) {
|
|
|
+ readMethod.setAccessible(true);
|
|
|
+ }
|
|
|
+ Object value = readMethod.invoke(source);
|
|
|
+ if (value != null || "java.lang.String".equals(readMethod.getReturnType().getName())) {// 这里判断以下value是否为空,当然这里也能进行一些特殊要求的处理 例如绑定时格式转换等等,如果是String类型,则不需要验证是否为空
|
|
|
+ boolean isEmpty = false;
|
|
|
+ if (value instanceof Set) {
|
|
|
+ Set s = (Set) value;
|
|
|
+ if (s == null || s.isEmpty()) {
|
|
|
+ isEmpty = true;
|
|
|
+ }
|
|
|
+ } else if (value instanceof Map) {
|
|
|
+ Map m = (Map) value;
|
|
|
+ if (m == null || m.isEmpty()) {
|
|
|
+ isEmpty = true;
|
|
|
+ }
|
|
|
+ } else if (value instanceof List) {
|
|
|
+ List l = (List) value;
|
|
|
+ if (l == null || l.size() < 1) {
|
|
|
+ isEmpty = true;
|
|
|
+ }
|
|
|
+ } else if (value instanceof Collection) {
|
|
|
+ Collection c = (Collection) value;
|
|
|
+ if (c == null || c.size() < 1) {
|
|
|
+ isEmpty = true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!isEmpty) {
|
|
|
+ Method writeMethod = targetPd.getWriteMethod();
|
|
|
+ if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) {
|
|
|
+ writeMethod.setAccessible(true);
|
|
|
+ }
|
|
|
+ writeMethod.invoke(target, value);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } catch (Throwable ex) {
|
|
|
+ throw new FatalBeanException("Could not copy properties from source to target", ex);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+}
|