Bean和Map转换的工具类
Bean和Map转换的工具类
依赖包:
基于Spring的cglib 实现。如果是Spring项目,可以不引入依赖。
```
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.3.8</version>
</dependency>
```
工具类如下:
import org.springframework.cglib.beans.BeanMap;
import java.util.HashMap;
import java.util.Map;
public class BeanMapUtil {
/**
* 将javaBean对象转换为map
*/
public static <T> Map<String, Object> beanToMap(T bean) {
Map<String, Object> map = new HashMap<>();
if (bean != null) {
BeanMap beanMap = BeanMap.create(bean);
for (Object key : beanMap.keySet()) {
Object value = beanMap.get(key);
map.put(key + "", value);
}
}
return map;
}
/**
* 将map转换为javaBean对象
* 注意:map的vaule类型,要与bean对应属性的类型一致
*/
public static <T> T mapToBean(Map<String, Object> map, T bean) {
if (map != null) {
BeanMap beanMap = BeanMap.create(bean);
beanMap.putAll(map);
}
return bean;
}
}
使用示例:
public void testBeanToMap() {
Order order = Order.builder().id(1633376593701060610L).build();
Map<String, Object> map = BeanMapUtil.beanToMap(order);
System.out.println(map);
}
public void testMapToBean() {
Map<String, Object> map = new HashMap<>();
//对应Order类的id字段为Long类型
map.put("id", 12343276L);
map.put("result", "testTest");
Order order = new Order();
BeanMapUtil.mapToBean(map, order);
System.out.println(order);
}
参考资料:
https://blog.csdn.net/mybook201314/article/details/118336749
https://www.zhihu.com/question/421708564