Tag Archives: HTML5

Chrome browser settings cause err when accessing the website_ FAILED

When testing in the test environment, the Chrome browser in one environment cannot be accessed, and the following error is reported: failed to load resource: Net:: err_ FAILED 。 It’s OK to use other browsers, and it’s OK for other colleagues to use chrome browsers.

terms of settlement:

1. Open chrome://flags/#block -insecure-private-network-request

2. Disable block secure private network requests  


How to Solve Error: Failed to load ApplicationContext

Solution: failed to load ApplicationContext

Generally, it can be solved according to the following steps
Step 1: check the annotation
check whether there are the following annotations


If not, add dependencies and add comments


Step 2: check the package name
check whether the package name or package path in the XML file is correct, because beans are configured through XML. If they cannot be loaded, they are usually injected into the XML file in the container.


Step 3: check the encoding format



Problems and solutions of error reporting in using swiper in Vue

In recent development, we encountered the problem of always reporting errors when using swiper components. Later, it was found that the problem was caused by the version

1. Download these two versions of plug-ins:
“wiper”: “^ 4.5.1”,
“Vue awesome wiper”: “^ 4.0.4”,

npm install [email protected] --save -dev
npm install [email protected] --save -dev

2. Introduce in the component of xxxx.vue

import { swiper, swiperSlide } from "vue-awesome-swiper";
import "swiper/dist/css/swiper.css";
export default {
  name: "index",
  components: {

3. Use in div

<swiper ref="mySwiper" v-bind:options="swiperOptions">
          <swiper-slide v-for="(item, index) in slideList" :key="index">
            <a v-bind:href="'/#/product'%20+%20'item.id'">
              <img v-bind:src="item.img" alt />

error: resource android:attr/lStar not found [How to Solve]

When integrating androidx.activity:activity in Android projects, an error is reported.xxx/app/build/intermediates/incremental/mergeDebugResources/merged.dir/values/values.xml:5395: error: resource android:attr/lStar not found.error: failed linking references.

1. gradle introduces the configuration.

    def activity_version = "1.4.0-alpha02"

    // Java language implementation
    implementation "androidx.activity:activity:$activity_version"
    // Kotlin
    implementation "androidx.activity:activity-ktx:$activity_version"

2. Project gradle configuration:

buildscript {
    repositories {
    dependencies {
        classpath "com.android.tools.build:gradle:4.0.1"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files

3. The project is a brand-new project and kotlin has not been introduced, so it is not a kotlin version number problem.

4. After modifying the compilesdkversion and targetsdkversion to 31, the operation is normal.

[Solved] INSTALL_FAILED_DEXOPT (DEX optimization verification failed)

Phenomenon: APK installation of some mobile phones (system 5.0 11 model, system version is uncertain) fails, and the operation code is as follows:

The installation did not succeed.
The application could not be installed: INSTALL_FAILED_DEXOPT (DEX optimization verification failed)

List of apks:
[0]  ‘ D:\workspace\WalletHelper\app\build\outputs\apk\debug\app-debug.apk’
The device might have stale dexed jars that don’t match the current version (dexopt error).

Let’s start with the solution:

Put < in androidmanifest.xml; application> Set the Android: vmsafemode property of to true

Since minsdkversion 21 is set, Android 5.0 (API level 21) and later versions use the runtime named art, which itself supports loading multiple DEX files from APK files. Art performs precompiling during application installation, which scans for  classesN.dex   Files and compile them into a single file  .oat   File for Android devices to execute. So if your  minSdkVersion   For version 21 or later, multidex is enabled by default, and you do not need the multidex library.

About JS error uncaught syntax error: invalid shorthand property initializer

Sometimes when typing JS code, you will often encounter such errors:

This is due to careless typing of code, resulting in grammatical format errors.

If the object literal is used to define the object, the relationship between the attribute name and the attribute value:

var province = [{
            id: 1002,
            name: 'Heibei',
            city: [{
                    id: 1,
                    name= 'Shijiazhuang' // use object literals to define objects with attribute names separated from attribute values by:.
                    id: 2,
                    name: 'Handan'

Grammar norms are very important. Try not to make mistakes that can be avoided.