我希望得到一些帮助调试此问题.如果我将以下JSON发送到我的后端,它可以正常工作:
{
"approvalRequired": false,
"location": {
"locationName": "<+37.33233141,-122.03121860> +\/- 5.00m (speed 0.00 mps \/ course -1.00) @ 9\/16\/18, 9:24:59 PM Pacific Daylight Time",
"longitude": -122.0312186,
"latitude": 37.332331410000002
}
}
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但是,如果我现在发送以下内容:
{
"approvalRequired": false,
"scheduledStartTime": "2016-01-01T10:24:00+01:00",
"location": {
"locationName": "<+37.33233141,-122.03121860> +\/- 5.00m (speed 0.00 mps \/ course -1.00) @ 9\/16\/18, 9:24:59 PM Pacific Daylight Time",
"longitude": -122.0312186,
"latitude": 37.332331410000002
}
}
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我得到了上述错误.在我的后端代码中,我有以下内容:
@DynamoDBTypeConverted(converter = ZonedDateTimeTypeConverter.class)
@DynamoDBAttribute(attributeName = "scheduledStartTime")
public ZonedDateTime scheduledStartTime;
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API方法签名如下所示:
@RequestMapping(method = RequestMethod.POST)
public ResponseEntity create(@RequestBody Event event) {...} …Run Code Online (Sandbox Code Playgroud) 棘手的问题,希望有人有好的想法。
我showMenu(...)在 flutter 中调用我的文本按钮,效果很好。但是,有时在调整屏幕大小期间,菜单会卡在屏幕上的某个位置(远离其预期位置)。有时它会遵循其锚定位置。非常奇怪,我也注意到下拉菜单的这种行为。
这是我的示例代码。我想要么始终随屏幕移动菜单,或者在最坏的情况下,在屏幕调整大小事件上隐藏菜单。任何关于如何做的想法都会很棒!
class ZHomeMenuBar extends StatefulWidget {
const ZHomeMenuBar({Key? key}) : super(key: key);
@override
State<ZHomeMenuBar> createState() => _ZHomeMenuBarState();
}
class _ZHomeMenuBarState extends State<ZHomeMenuBar> {
final GlobalKey _mesKey = GlobalKey();
final GlobalKey _accKey = GlobalKey();
@override
Widget build(BuildContext context) {
final zuser = Provider.of<ZUser?>(context);
return Container(
height: 66,
decoration: BoxDecoration(color: context.backgroundColor),
padding: EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: Row(
children: [
Text(zuser == null ? "" : zuser.displayName ?? ""),
const Spacer(),
ZTextButton(text: "Portfolio", onPressed: () => …Run Code Online (Sandbox Code Playgroud) 我正在尝试编写一个DateTimeFormatter允许我采用多种不同String格式的格式,然后将String格式转换为特定类型.由于项目的范围和已经存在的代码,我不能使用不同类型的格式化程序.
例如,我想接受MM/dd/yyyy以及yyyy-MM-dd'T'HH:mm:ss然后当我打印时我只想打印MM/dd/yyyy格式并在我打电话时将其格式化LocalDate.format(formatter);
有人可以建议如何用这个做到这一点 java.time.format.*;
以下是我可以做到的方式org.joda:
// MM/dd/yyyy format
DateTimeFormatter monthDayYear = DateTimeFormat.forPattern("MM/dd/yyyy");
// array of parsers, with all possible input patterns
DateTimeParser[] parsers = {
// parser for MM/dd/yyyy format
monthDayYear.getParser(),
// parser for yyyy-MM-dd'T'HH:mm:ss format
DateTimeFormat.forPattern("yyyy-MM-dd'T'HH:mm:ss").getParser()
};
DateTimeFormatter parser = new DateTimeFormatterBuilder()
// use the monthDayYear formatter for output (monthDayYear.getPrinter())
// and parsers array for input (parsers)
.append(monthDayYear.getPrinter(), parsers)
// create formatter (using UTC …Run Code Online (Sandbox Code Playgroud) 我注意到在Obj-C中有很多问题,但我几乎不记得Obj-C,每个答案都是针对这个问题的.在这里我得到这个错误:"有时当应用程序刷新时,表单元格没有重复使用的索引路径".我注意到,当我不刷新但是我离开并重新打开表视图时,格式化已经毁了.
这是我在几个地方使用的"刷新"方法:
@IBAction func loadData(){
timeLineData.removeAllObjects()
//pulls the data from the server
var findTimeLineData: PFQuery = PFQuery(className: "Sweets")
findTimeLineData.findObjectsInBackgroundWithBlock{
(objects:[AnyObject]!, error: NSError!) -> Void in
if !error{
for object:PFObject! in objects{
self.timeLineData.addObject(object)
}
let tempArray: NSArray = self.timeLineData.reverseObjectEnumerator().allObjects
self.timeLineData = tempArray as NSMutableArray
//reloads the data in the table view
self.tableView.reloadData()
}
}
}
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而tableview方法:
override func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell? {
let cell: SweetTableViewCell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as SweetTableViewCell
let sweet: PFObject = self.timeLineData.objectAtIndex(indexPath.row) as …Run Code Online (Sandbox Code Playgroud) 我希望在这里能理解此错误,并且可能对可编码和可解码的内容有更广泛的了解。我班的一部分看起来如下:
public var eventId: String?
public var eventName: String?
public var eventDescription: String?
public var location: CLLocation?
/// These properties will be encoded/decoded from JSON
private enum CodingKeys: String, CodingKey {
case eventId
case eventName
case eventDescription
case location
}
public required convenience init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
let eventId = try container.decode(String?.self, forKey: .eventId)
let eventName = try container.decode(String?.self, forKey: .eventName)
let location = try container.decode(CLLocation?.self, forKey: .location)
self.init(eventId: eventId, eventName: eventName, location:location) …Run Code Online (Sandbox Code Playgroud) 我正在尝试使用 Firestore 安全规则来编辑一些数据,如下所示,在 Flutter 中有一个事务:
Future sendRequest(uidSend, uidRec, pid, title) async {
final crSend = ChatRequest(uid: uidRec, pid: pid, title: title);
var _lsSend = List();
_lsSend.add(crSend.toJson());
final crRec = ChatRequest(uid: uidSend, pid: pid, title: title);
var _lsRec = List();
_lsRec.add(crRec.toJson());
final uMSendDocref = userMetadataCollection.document(uidSend);
final uMRecDocref = userMetadataCollection.document(uidRec);
Firestore.instance.runTransaction((transaction) async {
await transaction.update(uMSendDocref, <String, dynamic>{
"sentRequests": FieldValue.arrayUnion(
_lsSend,
),
});
await transaction.update(uMRecDocref, <String, dynamic>{
"receivedRequests": FieldValue.arrayUnion(
_lsRec,
),
});
});
}
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请注意,用户 1 正在尝试更新他/她自己的数据以及用户 2 的数据。但是,我只希望 user1 能够更新 …
我正在寻找一种方法来遍历 2d n by m int 数组 (int[col][row]),在 Java 中首先逐行(简单部分)然后逐列遍历。这是逐行执行的代码,有没有办法逐行执行col?
for(int i = 0; i < display.length; i++){
for (int j = 0; j < display[i].length; j++){
if (display[i][j] == 1)
display[i][j] = w++;
else w = 0;
}
}
Run Code Online (Sandbox Code Playgroud) 我的用例如下.我想使用Java S3 SDK将文件从某个s3Location移动到不同的s3Location.例如,如果文件在bucket/current,我想将其移动到bucket/old.
我目前可以下载一个文件作为S3Object,将该对象转换为文件(java.io,因为S3 Java客户端因为我不明白的原因不允许你上传一个S3Object,你下载的对象非常相同!)并上传该文件.我很好奇是否有更好的方法.
谢谢!
我目前处于-07:00UTC 的太平洋标准时间 (PST)。
如果我这样做:moment().format('Z')我正确地得到了-07:00. 有没有办法(简单地)强制 moment.format() 忽略夏令时(在我的情况下给我-08:00)?
我看到互联网上满是抱怨apache pdf产品的人,但是我在这里找不到我的特殊用例。我正在尝试使用apache poi做一个简单的Hello World。现在,我的代码如下:
public ByteArrayOutputStream export() throws IOException {
//Blank Document
XWPFDocument document = new XWPFDocument();
//Write the Document in file system
ByteArrayOutputStream out = new ByteArrayOutputStream();;
//create table
XWPFTable table = document.createTable();
XWPFStyles styles = document.createStyles();
styles.setSpellingLanguage("English");
//create first row
XWPFTableRow tableRowOne = table.getRow(0);
tableRowOne.getCell(0).setText("col one, row one");
tableRowOne.addNewTableCell().setText("col two, row one");
tableRowOne.addNewTableCell().setText("col three, row one");
//create second row
XWPFTableRow tableRowTwo = table.createRow();
tableRowTwo.getCell(0).setText("col one, row two");
tableRowTwo.getCell(1).setText("col two, row two");
tableRowTwo.getCell(2).setText("col three, row two");
//create third row …Run Code Online (Sandbox Code Playgroud) 我一直在做一个项目并且有一个我正在使用的现有对象。我试图找到一种简单的方法来保存、检索和删除 Core Data 中这些对象的列表。
这是我的对象
import Foundation
class Book : Codable {
var coverIndex:Int?
var authorName:[String]?
var title:String?
var editionCount:Int?
var firstPublishYear:Int?
var key: String?
var publishPlace:[String]?
var publisher:[String]?
public enum BookResponseCodingKeys: String, CodingKey {
case coverIndex = "cover_i"
case authorName = "author_name"
case editionCount = "edition_count"
case firstPublishYear = "first_publish_year"
case key = "key"
case title = "title"
case publishPlace = "publish_place"
case publisher = "publisher"
}
public required init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: …Run Code Online (Sandbox Code Playgroud) I have essentially lifted this code from the internet:
//variables
//location manager
var locationManager:CLLocationManager!
var currentLocation:CLLocation?
//outlets
@IBOutlet weak var whatTextField: UITextField!
@IBOutlet weak var whereTextField: UITextField!
@IBOutlet weak var whenTextField: UITextField!
@IBAction func onCreateEventClick(_ sender: Any) {
let event = CAEvent(eventId: "123777abc", eventName: whatTextField.text, location: currentLocation)
event.save { (error) in
//handle event error
print(error)
}
}
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if( CLLocationManager.authorizationStatus() == .authorizedWhenInUse ||
CLLocationManager.authorizationStatus() == .authorizedAlways){
determineCurrentLocation()
} …Run Code Online (Sandbox Code Playgroud) java ×5
swift ×5
ios ×4
flutter ×2
2d ×1
amazon-s3 ×1
apache ×1
apache-poi ×1
arrays ×1
cllocation ×1
codable ×1
core-data ×1
datetime ×1
dst ×1
firebase ×1
flutter-web ×1
java-time ×1
javascript ×1
momentjs ×1
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uitableview ×1
xcode ×1