Bean转Map

--------------------------------------方式一：使用反射-----------------------------------------------------------

1. Bean转Map

public static Map<String, Object> objectToMap(Object obj) {
    if(obj == null){
        return null;
    }
    try {
        Map<String, Object> map = new HashMap<String, Object>();
        Field[] declaredFields = obj.getClass().getDeclaredFields();
        for (Field field : declaredFields) {
            field.setAccessible(true);
            map.put(field.getName(), field.get(obj));
        }
        return map;
    } catch (IllegalAccessException e) {
        return null;
    }
}

2. Map转Bean

public static <T>T mapToObject(Map<String, Object> map, Class<T> beanClass) throws Exception {
    if (map == null)
        return null;
    Object obj = beanClass.newInstance();
    Field[] fields = obj.getClass().getDeclaredFields();
    for (Field field : fields) {
        int mod = field.getModifiers();
        if(Modifier.isStatic(mod) || Modifier.isFinal(mod)){
            continue;
        }
        field.setAccessible(true);
        field.set(obj, map.get(field.getName()));
    }
    return (T)obj;
}

--------------------------------------方式二：使用cglib-----------------------------------------------------------

<dependency>
    <groupId>cglib</groupId>
    <artifactId>cglib</artifactId>
    <version>3.2.6</version>
</dependency>

代码：

/** 
 * 将javabean对象装换为map
 */  
public static <T> Map<String, Object> beanToMap(T bean) {  
    Map<String, Object> map = Maps.newHashMap();  
    if (bean != null) {  
        BeanMap beanMap = BeanMap.create(bean);  
        for (Object key : beanMap.keySet()) {  
            map.put(key+"", beanMap.get(key));  
        }             
    }  
    return map;  
}  
  
/** 
 * 将map装换为javabean对象 
 */  
public static <T> T mapToBean(Map<String, Object> map,T bean) {  
    BeanMap beanMap = BeanMap.create(bean);  
    beanMap.putAll(map);  
    return bean;  
}