最近很多小伙伴都在问yum出错Error:Cannotfindavalidbaseurlforrepo:base和yum出错怎么办这两个问题，那么本篇文章就来给大家详细解答一下，同时本文还将给你拓展A

最近很多小伙伴都在问yum出错Error: Cannot find a valid baseurl for repo: base和yum出错怎么办这两个问题，那么本篇文章就来给大家详细解答一下，同时本文还将给你拓展All mirror URLs are not using ftp, http[s] or file. Cannot find a valid baseurl for repo: base、An error occurred during local report processing: report definition has an invalid target namespace、android – NoClassDefFoundError：com.google.firebase.FirebaseOptions、android – 更新到新firebase后获取异常java.lang.NoClassDefFoundError：com.google.firebase.FirebaseOptions等相关知识，下面开始了哦！

• yum出错Error: Cannot find a valid baseurl for repo: base（yum出错怎么办）
• All mirror URLs are not using ftp, http[s] or file. Cannot find a valid baseurl for repo: base
• An error occurred during local report processing: report definition has an invalid target namespace
• android – NoClassDefFoundError：com.google.firebase.FirebaseOptions
• android – 更新到新firebase后获取异常java.lang.NoClassDefFoundError：com.google.firebase.FirebaseOptions

yum出错Error: Cannot find a valid baseurl for repo: base（yum出错怎么办）

使用yum命令安装的时候出错：yum localinstall --nogpgcheck *.rpm

错误如下：

Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=i386&repo=os error was
14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'"
Error: Cannot find a valid baseurl for repo: base

解决方法如下（修改dns配置）

vi /etc/resolv.conf

在此文件最后加入：nameserver xxx.xxx.xxx.xxx

如果没有vi编辑器可用：

echo "nameserver xxx.xxx.xxx.xxx" >>/etc/resolv.conf

然后pingwww.baidu.com

可以ping通，不会再出现unkNow host

ok，安装依赖，

最后出现compelete即可

All mirror URLs are not using ftp, http[s] or file. Cannot find a valid baseurl for repo: base

All mirror URLs are not using ftp, http[s] or file. Cannot find a valid baseurl for repo: base

20201205 centos6 20201130 停止维护了 官方源已经没有用了 镜像源也肯定没用了
YUM 报错那是肯定的！！！

已加载插件：fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/repo/arch combination/
removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt
错误：Cannot find a valid baseurl for repo: base

解决方法：

新的源： vault.centos.org

修改 /etc/yum.repos.d 中的 CentOS-Base.repo

1. 注释所有的 mirrorlist= #mirrorlist=
2. 取消所有的 baseurl 注释
3. 将 baseurl 中的 mirrorlist.centos.org 改为 vault.centos.org
————————————————————————————

An error occurred during local report processing: report definition has an invalid target namespace

不爱学习 000 只想睡觉

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android – NoClassDefFoundError：com.google.firebase.FirebaseOptions

06-03 01:36:29.607 2655-2655/mobapps.mypersonal.biz.grouptracker E/dalvikvm: Could not find class 'com.google.firebase.FirebaSEOptions',referenced from method com.google.firebase.FirebaseApp.<init> 06-03 01:36:29.617 2655-2655/mobapps.mypersonal.biz.grouptracker E/dalvikvm: Could not find class 'com.google.firebase.FirebaseApp$zzb',referenced from method com.google.firebase.FirebaseApp.zzaJ 06-03 01:36:29.621 2655-2655/mobapps.mypersonal.biz.grouptracker E/dalvikvm: Could not find class 'com.google.firebase.FirebaseApiNotAvailableException',referenced from method com.google.firebase.FirebaseApp.getToken 06-03 01:36:29.629 2655-2655/mobapps.mypersonal.biz.grouptracker E/dalvikvm: Could not find class 'com.google.firebase.FirebaseApp$zza',referenced from method com.google.firebase.FirebaseApp.zza 06-03 01:36:29.639 2655-2655/mobapps.mypersonal.biz.grouptracker E/AndroidRuntime: FATAL EXCEPTION: main
    Process: mobapps.mypersonal.biz.grouptracker,PID: 2655
    java.lang.NoClassDefFoundError: com.google.firebase.FirebaSEOptions
        at com.google.firebase.FirebaseApp.zzbu(UnkNown Source)
        at com.google.firebase.provider.FirebaseInitProvider.onCreate(UnkNown Source)
        at android.content.ContentProvider.attachInfo(ContentProvider.java:1656)
        at android.content.ContentProvider.attachInfo(ContentProvider.java:1627)
        at com.google.firebase.provider.FirebaseInitProvider.attachInfo(UnkNown Source)
        at android.app.ActivityThread.installProvider(ActivityThread.java:5079)
        at android.app.ActivityThread.installContentProviders(ActivityThread.java:4653)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4593)
        at android.app.ActivityThread.access$1500(ActivityThread.java:151)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1402)
        at android.os.Handler.dispatchMessage(Handler.java:110)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:5363)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:828)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:644)
        at dalvik.system.NativeStart.main(Native Method)

android – 更新到新firebase后获取异常java.lang.NoClassDefFoundError：com.google.firebase.FirebaseOptions

我已经使用this将我的应用程序更新到新的firebase,现在当我编译我的项目时,我得到以下异常.

这是我的logcat：

11:57:54.533 27844-27844/com.example.dayshift_2.traveyy E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.dayshift_2.traveyy, PID: 27844
java.lang.NoClassDefFoundError: com.google.firebase.FirebaSEOptions
at com.google.firebase.FirebaseApp.zzbu(UnkNown Source)
at com.google.firebase.provider.FirebaseInitProvider.onCreate(UnkNown Source)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1591)
at android.content.ContentProvider.attachInfo(ContentProvider.java:1562)
at com.google.firebase.provider.FirebaseInitProvider.attachInfo(UnkNown Source)
at android.app.ActivityThread.installProvider(ActivityThread.java:4871)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:4466)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4406)
at android.app.ActivityThread.access$1500(ActivityThread.java:139)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1270)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5102)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)

我的Build.gradle：

apply plugin: 'com.android.application'

android {
compileSdkVersion 23
buildToolsversion "23.0.3"

defaultConfig {
    applicationId "com.example.dayshift_2.traveyy"
    minSdkVersion 15
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
    multiDexEnabled true
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
packagingOptions {
    exclude 'meta-inf/LICENSE'
    exclude 'meta-inf/LICENSE-FIREBASE.txt'
    exclude 'meta-inf/NOTICE'
}
}

dependencies {
compile filetree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'

compile 'com.android.support:appcompat-v7:23.3.0'
compile 'com.android.support:design:23.3.0'
compile 'com.facebook.android:facebook-android-sdk:4.+'
compile 'com.google.android.gms:play-services:9.0.0'
compile 'com.google.firebase:firebase-database:9.0.0'
compile 'com.google.firebase:firebase-auth:9.0.0'
compile 'com.android.support:support-v13:23.3.0'
compile 'com.roughike:bottom-bar:1.2.1'
}


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

不知道我从哪里得到这个例外.任何帮助将受到高度赞赏.
谢谢

解决方法:

这对我有用：

>如果您还没有,请从Android SDK Manager>更新您的’Google Play服务’到第30版.附加功能.

>然后将行编译’com.android.support:multidex:1.0.1’添加到您的依赖项(或者只是删除multiDexEnabled,如果不需要,则为true)
>将此属性添加到清单中的应用程序标记：android：name =“android.support.multidex.MultiDexApplication”
如果您已经在Android Manifest中定义了自定义应用程序类,请从MultiDexApplication而不是Application扩展它

希望它有所帮助！

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