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Thymeleaf does not show data in html page

I’m just studying Thymeleaf and I don’t understand why I can’t show data inside my html code. My Thymeleaf controller is as follows: @Controller public class UserController { @GetMapping("/index") public String getMessage(Model model) { model.addAttribute("welcome", "Hello!"); return "index"; } }…

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Javascript – Firebase Unhandle Exception PlatformException(null-error, Host platform returned null value for non-null return value., null, null)

When I was make application for user signup and signin by using firebase but I cannot run as properly it give some error like bellow. E/flutter ( 6840): #0 FirebaseCoreHostApi.optionsFromResource (package:firebase_core_platform_interface/src/pigeon/messages.pigeon.dart:248:7) E/flutter ( 6840): <asynchronous suspension> E/flutter ( 6840): #1…

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Amazon web services – Optimize neptune query while using repeat & times

I have the following neptune query g.V().hasLabel('User') .has('user_id', 1004) .repeat(both('USES_UPI','USES_ACCOUNT','USES_HARDWARE_ID','USES_GAID','HAS_COOKIES').simplePath().dedup()) .times(3) .hasLabel('Gaid') .dedup() .count() and it's taking too much time. I tried profiling the query Original Traversal ================== [GraphStep(vertex,[]), HasStep([~label.eq(User), user_id.eq(159017810)]), RepeatStep([VertexStep(BOTH,[USES_UPI, USES_ACCOUNT, USES_HARDWARE_ID, USES_GAID, HAS_COOKIES],vertex), PathFilterStep(simple,null,null), DedupGlobalStep(null,null), RepeatEndStep],until(loops(3)),emit(false)), HasStep([~label.eq(Gaid)]),…

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Why String ""[]"" is a valid json?

Why fastjson and Jackson both judge the string ""[]"" a valid JSON? @Test public void validJSON() { String jsonString1 = ""[]""; System.out.println("fastjson: " + JSON.isValid(jsonString1)); ObjectMapper objectMapper = new ObjectMapper(); boolean flag = false; try { JsonNode jsonNode1 = objectMapper.readTree(jsonString1);…

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