在Visual Studio 2008中进行重建和清洁+构建之间的区别是什么?清洁+重建与清洁+重建不同吗?

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.js" type="text/javascript"></script>
<script>
$.get("http://example.com/", function(data) {
     alert(data);
});
</script>

它对那个URL做一个OPTIONS请求，然后回调永远不会被调用任何东西。

当它不是跨域时，它工作得很好。

jQuery不应该只是调用一个<script>节点，然后在它加载时做回调吗?我知道我将无法得到的结果(因为它是跨域)，但这是可以的;我只想让电话接通。这是bug，还是我做错了什么?

我如何递归地列出在Java目录下的所有文件?框架是否提供任何实用程序?

我看到了很多俗气的实现。但没有来自框架或nio

我以前从未使用过SOAP，对Python也有点陌生。我这样做是为了让自己熟悉这两种技术。我已经安装了soapplib，并试图阅读他们的客户端文档，但我不太理解它。是否还有其他更适合作为Python的SOAP客户端库的东西?

编辑:为了以防万一，我使用的是Python 2.6。

如何在JavaScript中检测Internet连接是否离线?

使用Android Studio 3.3 Canary 11和gradle插件版本3.3.0-alpha11。当尝试同步gradle时，它会抛出以下错误

WARNING: API 'variant.getExternalNativeBuildTasks()' is obsolete and has been 
replaced with 'variant.getExternalNativeBuildProviders()'.
It will be removed at the end of 2019.
For more information, see https://d.android.com/r/tools/task-configuration- 
avoidance
Affected Modules: app

单击错误将我引导到gradle文件中的这一行

applicationVariants.all { variant ->
            variant.outputs.all {
                outputFileName = "${variant.name}-${variant.versionName}.apk"
            }
        }

我到底需要改变什么?

项目build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        mavenCentral() // jcenter() works as well because it pulls from Maven Central
        maven { url "https://maven.google.com" }
        google()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0-alpha11'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath "io.realm:realm-gradle-plugin:4.1.1"
        classpath 'com.google.gms:google-services:3.2.1'
        classpath 'com.google.firebase:firebase-plugins:1.1.5'
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url "https://maven.google.com" }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

// Define versions in a single place
ext {
    // Sdk and tools
    minSdkVersion = 21
    targetSdkVersion = 27
    compileSdkVersion = 27
    buildToolsVersion = '27.0.3'

    // App dependencies
    supportLibraryVersion = '27.1.1'
    appCompactLibraryVersion = '27.1.1'
    playServicesVersion = '15.0.1'
    firebaseVersionCore = '16.0.1'
    firebaseVersionPerf = '16.0.0'
    firebaseVersionMessaging = '17.1.0'

    //lottie
    lottieVersion = '2.5.0'
}

应用build.gradle

buildscript {
    repositories {
        maven { url 'https://maven.fabric.io/public' }
    }

    dependencies {
        classpath 'io.fabric.tools:gradle:1.25.4'
    }
    buildscript {
        repositories {
            maven { url "https://maven.google.com" }
            maven { url 'https://maven.fabric.io/public' }
            mavenCentral()

        }

        dependencies {
            // These docs use an open ended version so that our plugin
            // can be updated quickly in response to Android tooling updates

            // We recommend changing it to the latest version from our changelog:
            // https://docs.fabric.io/android/changelog.html#fabric-gradle-plugin
            classpath 'io.fabric.tools:gradle:'
        }
    }
}
apply plugin: 'com.android.application'
apply plugin: 'com.google.firebase.firebase-perf'
repositories {
    maven { url 'https://maven.fabric.io/public' }
}

apply plugin: 'io.fabric'
apply plugin: 'realm-android'

android {

    realm {
        syncEnabled = false
    }

    dexOptions {
        javaMaxHeapSize "4g"
    }

    compileSdkVersion rootProject.ext.compileSdkVersion

    defaultConfig {
        applicationId "example.com"
        minSdkVersion rootProject.ext.minSdkVersion
        multiDexEnabled true
        versionCode mVersionCode
        versionName mVersionName
        vectorDrawables.useSupportLibrary = true

    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    buildTypes {

        applicationVariants.all { variant ->
            variant.outputs.all {
                outputFileName = "${variant.name}-${variant.versionName}.apk"
            }
        }

        release {
            shrinkResources true
            minifyEnabled true
            useProguard true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

            lintOptions {
                disable 'MissingTranslation'
            }

            applicationVariants.all { variant ->
                variant.outputs.all {
                    outputFileName = "${variant.name}-${variant.versionName}.apk"
                }
            }

        }
        debug {
            shrinkResources true
            minifyEnabled true
            useProguard true
            debuggable true
            versionNameSuffix '-DEBUG'
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'debug-proguard-rules.pro'

            ext.enableCrashlytics = false
            crunchPngs false

        }
    }

    flavorDimensions "default"

    lintOptions {

        checkReleaseBuilds false

    }

    packagingOptions {
        exclude 'META-INF/DEPENDENCIES.txt'
        exclude 'META-INF/LICENSE.txt'
        exclude 'META-INF/NOTICE.txt'
        exclude 'META-INF/NOTICE'
        exclude 'META-INF/LICENSE'
        exclude 'META-INF/DEPENDENCIES'
        exclude 'META-INF/notice.txt'
        exclude 'META-INF/license.txt'
        exclude 'META-INF/dependencies.txt'
        exclude 'META-INF/LGPL2.1'
    }
    buildToolsVersion '28.0.2'
}

configurations {
    implementation.exclude group: "org.apache.httpcomponents", module: "httpclient"
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')

    implementation "com.android.support:appcompat-v7:$rootProject.appCompactLibraryVersion"
    implementation "com.android.support:support-compat:$rootProject.supportLibraryVersion"
    implementation "com.android.support:mediarouter-v7:$rootProject.supportLibraryVersion"
    implementation "com.android.support:cardview-v7:$rootProject.supportLibraryVersion"
    implementation "com.android.support:design:$rootProject.supportLibraryVersion"


    api 'com.squareup.retrofit2:retrofit:2.4.0'
    api 'com.squareup.okhttp3:okhttp:3.11.0'
    api 'com.squareup.okhttp3:logging-interceptor:3.10.0'
    implementation 'com.google.code.gson:gson:2.8.2'
    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
    implementation 'com.squareup.picasso:picasso:2.5.2'
    implementation 'com.squareup.retrofit2:adapter-rxjava:2.3.0'
    implementation 'com.android.support:multidex:1.0.3'
    implementation 'com.daimajia.easing:library:2.0@aar'
    implementation 'com.daimajia.androidanimations:library:2.3@aar'

    implementation 'com.akexorcist:googledirectionlibrary:1.0.5'
    implementation 'io.reactivex:rxandroid:1.2.1'
    implementation 'io.reactivex:rxjava:1.3.0'
    // Wifi hotspot library
    implementation 'cc.mvdan.accesspoint:library:0.2.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'org.jsoup:jsoup:1.10.3'
    api "com.airbnb.android:lottie:$rootProject.lottieVersion"
    implementation 'com.android.support:support-v4:27.1.1'
    implementation 'com.android.support:recyclerview-v7:27.1.1'
    testImplementation 'junit:junit:4.12'
    implementation 'com.jakewharton:butterknife:8.8.1'

    debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.5.4'
    releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.4'

    implementation 'com.googlecode.libphonenumber:libphonenumber:8.2.0'

    implementation "com.google.android.gms:play-services-base:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-cast-framework:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-auth:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-identity:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-awareness:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-cast:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-drive:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-location:$rootProject.playServicesVersion"
    implementation "com.google.android.gms:play-services-maps:$rootProject.playServicesVersion"

    implementation "com.google.firebase:firebase-core:$rootProject.firebaseVersionCore"
    implementation "com.google.firebase:firebase-perf:$rootProject.firebaseVersionPerf"
    implementation "com.google.firebase:firebase-messaging:$rootProject.firebaseVersionMessaging"
    implementation "com.google.firebase:firebase-analytics:$rootProject.firebaseVersionCore"


    api('com.crashlytics.sdk.android:crashlytics:2.8.0@aar') {
        transitive = true
    }
    api('com.crashlytics.sdk.android:answers:1.4.1@aar') {
        transitive = true
    }
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    api project(path: ':libraryBTHelper')
    api project(':bkk_rush')

    debugApi 'com.amitshekhar.android:debug-db:1.0.3'
    api "org.jdeferred:jdeferred-android-aar:1.2.6"
    implementation 'com.android.support:gridlayout-v7:27.1.1'
}

apply plugin: 'com.google.gms.google-services'

我已经跳过了app/build中的一些常量和其他敏感信息。gradle文件。

情况是这样的:

I am programming Xcode whilst concurrently listening to music on my Bluetooth headphones... you know to block out the world. Then, I go to launch my app in the iOS simulator and BOOM all of a sudden my crystal clear music becomes garbled and super low quality like it is playing in a bathtub 2 blocks away... in the 1940s. Note: the quality deterioration does NOT occur if I am playing music on my laptop or cinema display and I launch the sim. It seems to be exclusively a Sim -> Bluetooth issue.

这个问题不仅仅是烦人。因为通常在停止模拟器后，蹩脚的浴缸质量的音乐继续。为了解决这个问题，我必须在OSX中打开声音偏好设置，然后短暂地切换回笔记本电脑的声音，然后切换回蓝牙耳机的声音。

这是一件大事，因为我每天都要启动模拟器50次，每次都要做这种切换，还要听40年代的单声道业余广播质量的音乐。

请注意，我使用的耳机是Plantronics BackBeat Pro，我的固件是最新的。我在OSX 10.11.4和Xcode 7.3…但这个问题在所有版本中都存在了2年多。你能把我从40年代救出来吗?

这个问题以前可能被问过，但没有明确的答案。如何在Retrofit请求的主体中发布原始的整个JSON ?

在这里看到类似的问题。或者这个答案是正确的，它必须是表单url编码并作为一个字段传递?我真的希望不是，因为我要连接的服务只是希望在文章正文中有原始JSON。它们不是用来为JSON数据寻找特定字段的。

I just want to clarify this with the restperts once and for all. One person answered not to use Retrofit. The other was not certain of the syntax. Another thinks yes it can be done but only if its form url-encoded and placed in a field (that's not acceptable in my case). No, I can't re-code all the services for my Android client. And yes, it's very common in major projects to post raw JSON instead of passing over JSON content as field property values. Let's get it right and move on. Can someone point to the documentation or example that shows how this is done? Or provide a valid reason why it can/should not be done.

更新:有一件事我可以百分之百确定。你可以在谷歌的Volley中做到这一点。这是与生俱来的。我们可以在Retrofit中这样做吗?

我如何从Java 7中的String对象创建Java .nio.file. path对象?

I.e.

String textPath = "c:/dir1/dir2/dir3";
Path path = ?;

在哪里?是缺少的使用textPath的代码。

重命名表在MySQL中不起作用

RENAME TABLE group TO member;

错误消息是

#1064 - You have an error in your SQL syntax; check the manual that corresponds
        to your MySQL server version for the right syntax to use near 'group 
        RENAME TO member' at line 1

对我来说，该查询在其他表上工作得很好，但在表组上却不行。