英文:
How to pass ArrayList to JPA repository method from lambda expression?
问题
这里有一个实体类：
public class Call {private String uniqId;private String gwNumber;}
字符串行：
String line = "qwe-123,10\nrty-345,15\nasd-567,17";
使用"\n"来分隔每个实体的数据：
Arrays.stream(result.split("\n")).forEach(s -> {String[] callFields = s.split(",");Call call = new Call();call.setUniqId(callFields[0]);call.setGwNum(callFields[1]);List<Call> callList = new ArrayList<>();callList.add(call);});
如何将callList传递给JPA repository.saveAll(callList)方法？
英文:
There is entity class:
public class Call {private String uniqId;private String gwNumber;}String line = "qwe-123,10\nrty-345,15\nasd-567,17";Arrays.stream(result.split("\n")) // "\n" is used to separate data for each entity.forEach(s-> {String[] callFields = s.split(","); // "," is used to separate data for each filed of entityCall call = new Call();call.setUniqId(callFields[0]);call.setGwNum(callFields[1]);List<Call> callList = new ArrayList<>();callList.add(call);});
How to pass callList to JPA repository.saveAll(callList) method ?
答案1
得分: 1
我认为你应该忘记从Stream中调用某物。我不是说这是不可能的，但这并不推荐。
class Call {}List<Call> callList = Arrays.stream(result.split("\n")).map(s -> {Call call = new Call();// ...return call;}).collect(Collectors.toList());
List<Call> callList 可以写入数据库。
英文:
I think you should forget to call smth. from Steram. I do not say this is impossible, but it's not recommended.
class Call {}List<Call> callList = Arrays.stream(result.split("\n")).map(s -> {Call call = new Call();// ...return call;}).collect(Collectors.toList());
List<Call> callList could be written into DB.
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