Java List＜Map＜String, Object＞＞到 List＜T＞数据转换

柔情只为你懂 2024-03-03 08:49 59阅读 0赞

/**
         * List<Map<String, Object>> 到 List<T> 数据转换
         */
        public static <T> List<T> setList(final List<Map<String, Object>> srcList, Class<T> clazz) {
        
            List<T> list = new ArrayList<>();
            for (int i=0;i<srcList.size();i++){
        
                try {
        
                    T t = clazz.newInstance();
                    Field[] fields = t.getClass().getDeclaredFields();
                    for (Field field : fields) {
        
                        if (!"serialVersionUID".equals(field.getName())) {
        
                            //设置对象的访问权限，保证对private的属性的访问
                            field.setAccessible(true);
                            //读取配置转换字段名，并从map中取出数据
                            Object v = srcList.get(i).get(field.getName());
                            field.set(t, convert(v, field.getType()));
                        }
                    }
                    list.add(t);
                } catch (Exception ex) {
        
                    ex.toString();
                }
    
            };
            return list;
        }
    
        /**
         * 字段类型转换
         */
        private static <T> T convert(Object obj, Class<T> type) {
        
            System.out.println("-convert-"+obj.toString()+",-type-"+type.toString());
            if (obj != null && StringUtils.isNotBlank(obj.toString())) {
        
                if (type.equals(String.class)) {
        
                    return (T) obj.toString();
                } else if (type.equals(BigDecimal.class)) {
        
                    return (T) new BigDecimal(obj.toString());
                }else if(type.equals(Double.class)){
        
                    return (T) Double.valueOf(obj.toString());
                }else if(type.equals(Integer.class)){
        
                    return (T) Integer.valueOf(obj.toString());
                }else if(type.equals(Date.class)){
        
                    return (T) new Date(obj.toString());
                }
                else{
        
                    //其他类型转换
                    return (T) obj.toString();
                }
    
            }
            return null;
        }