Bean轉Map、Map轉Bean

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

1. Bean轉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轉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>      

代碼：

/**
 * 将javabean對象裝換為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裝換為javabean對象   
 */
public static <T> T mapToBean(Map<String, Object> map,T bean) {
    BeanMap beanMap = BeanMap.create(bean);
    beanMap.putAll(map);
    return bean;
}      

轉載于:https://www.cnblogs.com/yifanSJ/p/9220967.html