Question

我想将一个groovy对象属性复制到另一个java对象，我知道groovy到groovy是这样的

def copyProperties(source, target) {
    source.properties.each { key, value ->
        if (target.hasProperty(key) && !(key in ['class', 'metaClass']))
            target[key] = value
    }
}

java to java我可以使用apache BeanUtils，但是如何将groovy对象属性复制到java对象属性？ PS：时髦的对象

class UserInfo {
    Integer age
    String userName
    String password
}

java对象

 public class UserInfo {
    private int age;
    private String userName;
    private String password;
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
}

Answer 1

def copyProperties(source, Object target) {
    source.properties.each { key, value ->
        Class<? extends Object> toClass = target.getClass();

        try {
            BeanInfo toBean = Introspector.getBeanInfo(toClass);

            PropertyDescriptor[] toPd = toBean.getPropertyDescriptors();

            for (PropertyDescriptor propertyDescriptor : toPd) {
                propertyDescriptor.getDisplayName();

                if (key.equals(
                        propertyDescriptor.getDisplayName())
                        && !(key in ['class', 'metaClass'])) {
                    if(propertyDescriptor.getWriteMethod() != null)
                        propertyDescriptor.getWriteMethod().invoke(target, value);
                }

            }
        } catch (IntrospectionException e) {
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
    }
}

我自己得到了它〜

如何将groovy属性复制到java bean属性

1 个答案: