动态生成bean实体

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最近工作中需要和前端同事配合，将传来的数据动态组装成dto实体，故可以用cglib动态代理来实现。

public class BeanDto {

    public Object object = null;

    public BeanMap beanMap = null;

    public BeanDto() {
        super();
    }

    public BeanDto(Map propertyMap) {
        this.object = createDtoBean(propertyMap);
        this.beanMap = BeanMap.create(this.object);
    }

    /**
     * set方法
     * @param property 属性名
     * @param value 值
     */
    public void setValue(String property, Object value) {
        beanMap.put(property, value);
    }

    /**
     * get方法
     * @param property 属性名
     * @return 值
     */
    public Object getValue(String property) {
        return beanMap.get(property);
    }

    /**
     *获取Dto
     * @return
     */
    public Object getObject() {
        return this.object;
    }

    private Object createDtoBean(Map propertyMap) {
        BeanGenerator generator = new BeanGenerator();
        Set keySet = propertyMap.keySet();
        for (Iterator i = keySet.iterator(); i.hasNext();) {
            String key = (String) i.next();
            generator.addProperty(key, (Class) propertyMap.get(key));
        }
        return generator.create();
    }
}

测试

public static void main(String[] args) throws ClassNotFoundException {

        // 设置类成员属性
        HashMap propertyMap = new HashMap();

        propertyMap.put("id", Class.forName("java.lang.Integer"));

        propertyMap.put("name", Class.forName("java.lang.String"));

        propertyMap.put("address", Class.forName("java.lang.String"));

        // 生成动态 Bean
        FatherBeanDto bean = new FatherBeanDto(propertyMap);

        // 给 Bean 设置值
        bean.setValue("id", new Integer(123));

        bean.setValue("name", "454");

        bean.setValue("address", "789");

        // 从 Bean 中获取值，当然了获得值的类型是 Object

        System.out.println("  >> id      = " + bean.getValue("id"));

        System.out.println("  >> name    = " + bean.getValue("name"));

        System.out.println("  >> address = " + bean.getValue("address"));

        // 获得bean的实体
        Object object = bean.getObject();

        // 通过反射查看所有方法名
        Class clazz = object.getClass();
        Method[] methods = clazz.getDeclaredMethods();
        for (int i = 0; i < methods.length; i++) {
            System.out.println(methods[i].getName());
        }
    }
    }