java bean的拷贝类

src/com/platform/utils/BeanCopy.java

@@ -0,0 +1,80 @@
+package com.platform.utils;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import com.fasterxml.jackson.databind.PropertyNamingStrategy.UpperCamelCaseStrategy;
+
+public class BeanCopy {
+	
+	/** 复制属性（子类父类等继承关系不可用）
+	 * @param source 源对象
+	 * @param dst 目标对象
+	 * @param params 不复制的属性
+	 * @throws Exception 
+	 * @throws IllegalArgumentException
+	 * @throws IllegalAccessException
+	 * @throws NoSuchFieldException
+	 * @throws SecurityException
+	 */
+	public static void copyBean(Object source, Object dst, String... params) throws Exception{
+		if (dst.getClass().getSuperclass() == source.getClass()) {
+			fatherCopyChild(source, dst, params);
+		}
+		List<String> filter = new ArrayList<String>();
+		filter.addAll(Arrays.asList(params));
+		Field[] sourceField = source.getClass().getDeclaredFields();
+		List<String> sourceFieldName = new ArrayList<String>();
+		for (Field fie : sourceField) {
+			sourceFieldName.add(fie.getName());
+		}
+		Field[] dstField = dst.getClass().getDeclaredFields();
+		for (Field field : dstField) {
+			String name = field.getName();
+			if (filter.contains(name)) {
+				continue;
+			}
+			if (sourceFieldName.contains(name)) {
+				field.setAccessible(true);
+				Object value;
+//					Method m = source.getClass().getMethod("get"+upperHeadChar(name));
+//					value = m.invoke(source);
+					value = source.getClass().getDeclaredField(name).get(source);
+					if (null != value) {
+						field.set(dst, value);
+					}
+			}
+		}
+		
+	}
+	
+	private static void fatherCopyChild(Object father, Object dst, String... params) throws Exception{
+		List<String> filter = new ArrayList<String>();
+		filter.addAll(Arrays.asList(params));
+		if (dst.getClass().getSuperclass() == father.getClass()) {
+			Class faClass = father.getClass();
+			Field[] ff = faClass.getDeclaredFields();
+			for (int i = 0; i < ff.length; i++) {
+				Field f = ff[i];
+				String name = f.getName();
+				if (filter.contains(name)) {
+					continue;
+				}
+				f.setAccessible(true);
+				Class type = f.getType();
+				Method m = faClass.getMethod("get"+upperHeadChar(f.getName()));
+				Object obj = m.invoke(father);
+				f.set(dst, obj);
+			}
+		}
+	}
+	
+	private static String upperHeadChar(String in) {
+		String head = in.substring(0,1);
+		return head.toUpperCase()+in.substring(1, in.length());
+	}
+
+}