So I have to convert List<ClassObject> rows into JsonObjects to send into rest call. List has around 10,000 rows data. so can anyone please suggest me a easy way to convert List d,java,json,spring-boot"/>

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So I have to convert List<ClassObject> rows into JsonObjects to send into rest call. List has around 10,000 rows data. so can anyone please suggest me a easy way to convert List d

java - 如何转换大量列表 data into JSONobject?

So I have to convert List<ClassObject> rows into JsonObjects to send into rest call. List has around 10,000 rows data. so can anyone please suggest me a easy way to convert List d

问题描述

So I have to convert List<ClassObject> rows into JsonObjects to send into rest call. List has around 10,000 rows data. so can anyone please suggest me a easy way to convert List data in JsonObject? for now i am iterating the list data using for loop and then putting into JsonObject but it is taking so much time.

for (DeviceMasterForm dirtyForm : dirtyMasterFormsOnly) {

            tableObject = new JSONObject();
            tableObject.put("id", dirtyForm.getMasterForm().getId());
            tableObject.put("strFormTitle", dirtyForm.getMasterForm().getStrFormTitle());
            tableObject.put("iTemplateVersionNumber", dirtyForm.getMasterForm().getiTemplateVersionNumber());
            tableObject.put("iViewSequence", dirtyForm.getMasterForm().getiViewSequence());
            tableObject.put("hasConditions", dirtyForm.getMasterForm().getHasConditions());
            tableObject.put("flgDeleted", dirtyForm.getMasterForm().getFlgDeleted());
            tableObject.put("dtCreated", dirtyForm.getMasterForm().getDtCreated());
            tableObject.put("dtUpdated", dirtyForm.getMasterForm().getDtUpdated());

            tableJsonArray.put(tableObject);
        }

Exected result = [{"key":"value","key":"value"},{"key":"value","key":"value"}]

Microsoft WebView2 slow response time in windows service

When using Microsoft WebView2 API which is still in beta at the time of writing this question we are experiencing a significant difference in performance between a Windows VCL version of the application and Windows Service.

In the desktop application response, times for checking values of a web page are approx 250ms In the service application response, times for the same checks are approx 8000ms

All interfaces are identical and we have tried different user permissions on the service to ascertain if the problem related to user permissions, however with the system functioning just being significantly delayed this can be discounted.

Previously we used Internet Explorer (COM Object) to achieve the outcomes but this has now been deprecated. The language we are using at present is Delphi (Object Pascal) though the usage is due to the API and can be agnostic and has been tested with C# to the same result.

Does anyone have experience of issues with windows services running slowly compared to the same code in a VCL application?

标签： javajsonspring-boot

解决方案

Spring Boot 有一个内置的 json 序列化器。你可以这样做：

@RestController
public class MyController {

    @GetMapping("/list")
    public List<MyObject> getList() {
        //return your List Object here, Spring Boot will serialize it
        return new ArrayList<MyObject>();
    }
}

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