java String 和ArrayList转换 换化

[Ljava.lang.String; cannot be cast to java.util.List

原因：

Map<String, Object> parameters = (Map<String, Object>) jsonResult.getData();

parameters 参数中refrenceIds 是个string

（比如："refrenceIds": ["1438647705516691456", "1436069122789134336"],）

下步代码：

List<Long> refrenceIds = (List<Long>) MapUtils.getObject(parameters, SystemConst.REFRENCEIDS);

就会转换报错

解决：

@Override
public int submitCheckBatchAgreeOrder(Map<String, Object> parameters) throws Exception {//List<Long> refrenceIds = (List<Long>) MapUtils.getObject(parameters, SystemConst.REFRENCEIDS);List<Long> refrenceIds = ArraylistUtils.getLongList((String[]) MapUtils.getObject(parameters, SystemConst.REFRENCEIDS));parameters.put(SystemConst.REFRENCEIDS, refrenceIds);if (CollectionUtils.isEmpty(refrenceIds)){return NumberUtils.INTEGER_ZERO;}return agreeOrderDao.submitCheckBatchAgreeOrder(parameters);
}

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实体类转Map

Map<String, Object> parameters = CglibUtils.beanToMap(request);

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将指定的字符串数组转化为List<Long>

public static List<Long> getLongList(String[] stringArray)
{if (ArrayUtils.getLength(stringArray) == NumberUtils.INTEGER_ZERO){return null;}Set<Long> set = Sets.newHashSetWithExpectedSize(stringArray.length);for (String str : stringArray){try{set.add(Long.parseLong(str));}catch (NumberFormatException ex){log.error("编号格式有误---{}", str);return null;}}return new ArrayList<>(set);
}

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