List＜类型1＞转成List＜类型2＞的LIst类型转换工具类

蔚落 2022-12-26 08:23 143阅读 0赞

# 工具类代码 #

import lombok.extern.slf4j.Slf4j;
    import org.springframework.beans.BeanUtils;
    import java.util.List;
    import java.util.Set;
    import java.util.stream.Collectors;
    
    /** * List类型转换工具类 */
    @Slf4j
    public class BeanHelper { 
    
        public static <T> T copyProperties(Object source, Class<T> target){ 
            try { 
                T t = target.newInstance();
                BeanUtils.copyProperties(source, t);
                return t;
            } catch (Exception e) { 
                log.error("【数据转换出错】", target.getName(), e);
                return null;
            }
        }
    
    //List类型转换
        public static <T> List<T> copyWithCollection(List<?> sourceList, Class<T> target){ 
            try { 
                return sourceList.stream().map(s -> copyProperties(s, target)).collect(Collectors.toList());
            } catch (Exception e) { 
                log.error("【数据转换出错】", target.getName(), e);
    			return null;
            }
        }
    //Set类型转换
        public static <T> Set<T> copyWithCollection(Set<?> sourceList, Class<T> target){ 
            try { 
                return sourceList.stream().map(s -> copyProperties(s, target)).collect(Collectors.toSet());
            } catch (Exception e) { 
                log.error("【数据转换出错】", target.getName(), e);
    			return null;
            }
        }
    }

# 导包 #

我用的是SpringBoot,缺哪个就导入那个  
导入`lombok`和`beans`

<dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <scope>compile</scope>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
            </dependency>