Java对象指定部分/全部属性copy工具类

为了将部分属性从Java对象复制到另一个对象，可以使用实用程序类和反射复制指定字段的方法。以下是一个例子：

public class ObjectCopier {    public static void copyFields(Object source, Object destination, String... fields) throws IllegalAccessException {        Class<?> sourceClass = source.getClass();        Class<?> destinationClass = destination.getClass();        for (String field : fields) {            Field sourceField = null;            try {                sourceField = sourceClass.getDeclaredField(field);            } catch (NoSuchFieldException e) {                // Ignore fields that don't exist in the source object                continue;            }            Field destinationField = null;            try {                destinationField = destinationClass.getDeclaredField(field);            } catch (NoSuchFieldException e) {                // Ignore fields that don't exist in the destination object                continue;            }            sourceField.setAccessible(true);            destinationField.setAccessible(true);            destinationField.set(destination, sourceField.get(source));        }    }}

测试

@Datapublic class User {    private String warehouseCode;    private String warehouseName;    private Integer  deductType;    private String  deductOrderCode;    private BigDecimal deductAmount;}@Datapublic class User2 {    private String warehouseCode;    private String warehouseName;    private Integer  deductType;    public static void main(String[] args) throws IllegalAccessException {        User2 user2 = new User2();        user2.setWarehouseCode("code");        user2.setWarehouseName("name");        user2.setDeductType(111);        User user = new User();        ObjectCopier.copyFields(user2，user,"warehouseCode","warehouseName");        System.out.println(user);    }}

测试结果