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我有一个 Spring Boot 应用程序(最近启用了 HTTPS + 自签名证书),该应用程序在 Eureka 中注册并在 Eureka 仪表板中可见。
我们有一个 Zuul Filter 层,它获取用户请求,然后将其传递给 Spring Boot 应用程序。在可以通过 HTTP 访问该应用程序之前,这一切都运行良好。但是,一旦我启用了 HTTPS,zuul 路由就会失败。
这是我的 yaml 文件中的 Zuul 路由配置。 我的 Zuul Route 配置是否应该对启用 HTTPS 的 URL/应用程序进行任何特殊配置?
zuul:
routes:
ms:
path: /app/**
stripPrefix: true
ms:
ribbon:
ServerListRefreshInterval: 1000
ConnectTimeout: 20000
ReadTimeout: 20000
这是异常堆栈跟踪(显示 Zuul 正在尝试路由到 HTTP URL,而不是 HTTPS url)
Caused by: com.netflix.hystrix.exception.HystrixRuntimeException: msRibbonCommand failed and no fallback available.
at com.netflix.hystrix.AbstractCommand$20.call(AbstractCommand.java:816) ~[hystrix-core-1.4.0-RC6.jar:na]
at com.netflix.hystrix.AbstractCommand$20.call(AbstractCommand.java:798) ~[hystrix-core-1.4.0-RC6.jar:na]
at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$1.onError(OperatorOnErrorResumeNextViaFunction.java:76) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorDoOnEach$1.onError(OperatorDoOnEach.java:70) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorDoOnEach$1.onError(OperatorDoOnEach.java:70) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$ThrowObservable$1.call(Observable.java:10493) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$ThrowObservable$1.call(Observable.java:10483) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.unsafeSubscribe(Observable.java:8591) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$1.onError(OperatorOnErrorResumeNextViaFunction.java:77) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorMap$1.onError(OperatorMap.java:48) ~[rxjava-core-0.20.7.jar:na]
at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:318) ~[hystrix-core-1.4.0-RC6.jar:na]
at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:310) ~[hystrix-core-1.4.0-RC6.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.unsafeSubscribe(Observable.java:8591) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$1.onError(OperatorOnErrorResumeNextViaFunction.java:77) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorDoOnEach$1.onError(OperatorDoOnEach.java:70) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorMap$1.onError(OperatorMap.java:48) ~[rxjava-core-0.20.7.jar:na]
at com.netflix.hystrix.AbstractCommand$HystrixObservableTimeoutOperator$3.onError(AbstractCommand.java:995) ~[hystrix-core-1.4.0-RC6.jar:na]
at rx.internal.operators.OperatorDoOnEach$1.onError(OperatorDoOnEach.java:70) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorDoOnEach$1.onError(OperatorDoOnEach.java:70) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$ThrowObservable$1.call(Observable.java:10493) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$ThrowObservable$1.call(Observable.java:10483) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.unsafeSubscribe(Observable.java:8591) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$1.onError(OperatorOnErrorResumeNextViaFunction.java:77) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorMap$1.onError(OperatorMap.java:48) ~[rxjava-core-0.20.7.jar:na]
at com.netflix.hystrix.HystrixCommand$1.call(HystrixCommand.java:301) ~[hystrix-core-1.4.0-RC6.jar:na]
at com.netflix.hystrix.HystrixCommand$1.call(HystrixCommand.java:293) ~[hystrix-core-1.4.0-RC6.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.unsafeSubscribe(Observable.java:8591) ~[rxjava-core-0.20.7.jar:na]
at com.netflix.hystrix.AbstractCommand$1.call(AbstractCommand.java:388) ~[hystrix-core-1.4.0-RC6.jar:na]
at com.netflix.hystrix.AbstractCommand$1.call(AbstractCommand.java:368) ~[hystrix-core-1.4.0-RC6.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.unsafeSubscribe(Observable.java:8591) ~[rxjava-core-0.20.7.jar:na]
at com.netflix.hystrix.AbstractCommand$ObservableCommand$1.call(AbstractCommand.java:1097) ~[hystrix-core-1.4.0-RC6.jar:na]
at com.netflix.hystrix.AbstractCommand$ObservableCommand$1.call(AbstractCommand.java:1093) ~[hystrix-core-1.4.0-RC6.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.subscribe(Observable.java:8680) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.BlockingOperatorToFuture.toFuture(BlockingOperatorToFuture.java:55) ~[rxjava-core-0.20.7.jar:na]
at rx.observables.BlockingObservable.toFuture(BlockingObservable.java:420) ~[rxjava-core-0.20.7.jar:na]
at com.netflix.hystrix.HystrixCommand.queue(HystrixCommand.java:385) ~[hystrix-core-1.4.0-RC6.jar:na]
at com.netflix.hystrix.HystrixCommand.execute(HystrixCommand.java:339) ~[hystrix-core-1.4.0-RC6.jar:na]
at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.forward(RibbonRoutingFilter.java:130) ~[spring-cloud-netflix-core-1.0.0.RELEASE.jar:1.0.0.RELEASE]
... 82 common frames omitted
Caused by: com.netflix.client.ClientException: null
at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:123) ~[ribbon-loadbalancer-2.0-RC13.jar:na]
at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:81) ~[ribbon-loadbalancer-2.0-RC13.jar:na]
at org.springframework.cloud.netflix.zuul.filters.route.RibbonCommand.forward(RibbonCommand.java:129) ~[spring-cloud-netflix-core-1.0.0.RELEASE.jar:1.0.0.RELEASE]
at org.springframework.cloud.netflix.zuul.filters.route.RibbonCommand.run(RibbonCommand.java:103) ~[spring-cloud-netflix-core-1.0.0.RELEASE.jar:1.0.0.RELEASE]
at org.springframework.cloud.netflix.zuul.filters.route.RibbonCommand.run(RibbonCommand.java:1) ~[spring-cloud-netflix-core-1.0.0.RELEASE.jar:1.0.0.RELEASE]
at com.netflix.hystrix.HystrixCommand$1.call(HystrixCommand.java:298) ~[hystrix-core-1.4.0-RC6.jar:na]
... 125 common frames omitted
Caused by: org.apache.http.client.ClientProtocolException: null
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:867) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:115) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:170) ~[jersey-apache-client4-1.11.jar:1.11]
at com.sun.jersey.api.client.Client.handle(Client.java:648) ~[jersey-client-1.13.jar:1.13]
at com.sun.jersey.api.client.WebResource.handle(WebResource.java:680) ~[jersey-client-1.13.jar:1.13]
at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) ~[jersey-client-1.13.jar:1.13]
at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:568) ~[jersey-client-1.13.jar:1.13]
at com.netflix.niws.client.http.RestClient.execute(RestClient.java:621) ~[ribbon-httpclient-2.0-RC13.jar:na]
at com.netflix.niws.client.http.RestClient.execute(RestClient.java:527) ~[ribbon-httpclient-2.0-RC13.jar:na]
at com.netflix.niws.client.http.RestClient.execute(RestClient.java:92) ~[ribbon-httpclient-2.0-RC13.jar:na]
at com.netflix.client.AbstractLoadBalancerAwareClient$1.call(AbstractLoadBalancerAwareClient.java:109) ~[ribbon-loadbalancer-2.0-RC13.jar:na]
at com.netflix.loadbalancer.reactive.LoadBalancerCommand$3$1.call(LoadBalancerCommand.java:303) ~[ribbon-loadbalancer-2.0-RC13.jar:na]
at com.netflix.loadbalancer.reactive.LoadBalancerCommand$3$1.call(LoadBalancerCommand.java:287) ~[ribbon-loadbalancer-2.0-RC13.jar:na]
at rx.internal.operators.OperatorMap$1.onNext(OperatorMap.java:54) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.util.ScalarSynchronousObservable$1.call(ScalarSynchronousObservable.java:41) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.util.ScalarSynchronousObservable$1.call(ScalarSynchronousObservable.java:30) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.unsafeSubscribe(Observable.java:8591) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorConcat$ConcatSubscriber.subscribeNext(OperatorConcat.java:163) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorConcat$ConcatSubscriber.onNext(OperatorConcat.java:128) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorConcat$ConcatSubscriber.onNext(OperatorConcat.java:65) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorMap$1.onNext(OperatorMap.java:54) ~[rxjava-core-0.20.7.jar:na]
at com.netflix.loadbalancer.reactive.LoadBalancerCommand$1.call(LoadBalancerCommand.java:185) ~[ribbon-loadbalancer-2.0-RC13.jar:na]
at com.netflix.loadbalancer.reactive.LoadBalancerCommand$1.call(LoadBalancerCommand.java:180) ~[ribbon-loadbalancer-2.0-RC13.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.unsafeSubscribe(Observable.java:8591) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber$1.call(OperatorRetryWithPredicate.java:112) ~[rxjava-core-0.20.7.jar:na]
at rx.schedulers.TrampolineScheduler$InnerCurrentThreadScheduler.enqueue(TrampolineScheduler.java:85) ~[rxjava-core-0.20.7.jar:na]
at rx.schedulers.TrampolineScheduler$InnerCurrentThreadScheduler.schedule(TrampolineScheduler.java:65) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber.onNext(OperatorRetryWithPredicate.java:77) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.operators.OperatorRetryWithPredicate$SourceSubscriber.onNext(OperatorRetryWithPredicate.java:45) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.util.ScalarSynchronousObservable$1.call(ScalarSynchronousObservable.java:41) ~[rxjava-core-0.20.7.jar:na]
at rx.internal.util.ScalarSynchronousObservable$1.call(ScalarSynchronousObservable.java:30) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:173) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable$2.call(Observable.java:166) ~[rxjava-core-0.20.7.jar:na]
at rx.Observable.subscribe(Observable.java:8680) ~[rxjava-core-0.20.7.jar:na]
at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:452) ~[rxjava-core-0.20.7.jar:na]
at rx.observables.BlockingObservable.single(BlockingObservable.java:348) ~[rxjava-core-0.20.7.jar:na]
at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:102) ~[ribbon-loadbalancer-2.0-RC13.jar:na]
... 130 common frames omitted
Caused by: org.apache.http.ProtocolException: The server failed to respond with a valid HTTP response
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:151) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:261) ~[httpcore-4.4.jar:4.4]
at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:283) ~[httpcore-4.4.jar:4.4]
at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:251) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:223) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:272) ~[httpcore-4.4.jar:4.4]
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:124) ~[httpcore-4.4.jar:4.4]
at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:685) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:487) ~[httpclient-4.3.6.jar:4.3.6]
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863) ~[httpclient-4.3.6.jar:4.3.6]
更新: 添加 isRibbon 安全属性后,此错误消失了,现在我有一个 new error .
最佳答案
自从我玩这个以来已经有一段时间了,因为由于无法通过代理传递用户证书的限制,我们最终无法使用它。然而,你asked for my help ,所以我会尝试分享我所做的工作。
我能够在充当边缘服务器的 ZUUL 和后端服务之间获得双向 SSL,同时在它们自己的 VM 中运行(即在每个服务上运行 mvn spring-boot:run) 。
这是我的 Zuul 配置:
info:
component: Zuul Server
endpoints:
restart:
enabled: true
shutdown:
enabled: true
health:
sensitive: false
zuul:
routes:
ui: /**
api: /api/**
logging:
level:
ROOT: INFO
org.springframework.web: DEBUG
server:
port: 8443
ssl:
key-store: classpath:dev/localhost.jks
key-store-password: yourpassword
keyStoreType: JKS
keyAlias: localhost
clientAuth: want
trust-store: classpath:dev/localhost.jks
ribbon:
IsSecure: true
边缘服务器本身没什么有趣的:
@SpringBootApplication
@Controller
@EnableAutoConfiguration
@EnableZuulProxy
public class ZuulEdgeServer {
public static void main(String[] args) {
new SpringApplicationBuilder(ZuulEdgeServer.class).web(true).run(args);
}
}
现在,在我的其他服务中,我的 application.yml 文件中有以下内容:
server:
port: 8444
ssl:
key-store: classpath:dev/localhost.jks
key-store-password: yourpassword
keyStoreType: JKS
keyAlias: localhost
clientAuth: want
trust-store: classpath:dev/localhost.jks
eureka:
instance:
nonSecurePortEnabled: false
securePortEnabled: true
securePort: ${server.port}
homePageUrl: https://${eureka.instance.hostname}:${server.port}/
secureVirtualHostName: ${spring.application.name}
我的 Eureka 配置没有太多,但以防万一:
server:
port: 8761
eureka:
client:
registerWithEureka: false
fetchRegistry: false
server:
waitTimeInMsWhenSyncEmpty: 0
大多数应用程序中我的 bootstrap.yml 如下所示:
spring:
application:
name: eureka
cloud:
config:
uri: ${vcap.services.${PREFIX:}configserver.credentials.uri:http://user:password@localhost:8888}
我主要发现我需要其中的 spring.application.name
来解决在同一容器中运行应用程序时的冲突。
如果我没记错的话,上面的重要部分是:
ribbon.isSecure = true
eureka.instance.securePortEnabled = true
和后端服务中的securePort
。 我不记得secureVirtualHostName
是否重要。
希望这些信息可以帮助您!
关于netflix - Zuul 路由到 HTTPS url 时出错,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32478146/
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早上好,我是 ZXing 的新手,当我运行我的应用程序时出现以下错误: 异常Ljava/lang/NoClassDefFoundError;初始化 ICOM/google/zxing/client/a
我正在制作一些哈希函数。 它的源代码是... #include #include #include int m_hash(char *input, size_t in_length, char
我正在尝试使用 Spritekit 在 Swift 中编写游戏。目的是带着他的角色迎面而来的矩形逃跑。现在我在 SKPhysicsContactDelegate (didBegin ()) 方法中犯了
我正在尝试创建一个用于导入 CSV 文件的按钮,但出现此错误: actionPerformed(java.awt.event.ActionEvent) in cannot implement
请看下面的代码 public List getNames() { List names = new ArrayList(); try { createConnection(); Sta
我正在尝试添加一个事件以在“dealsArchive”表中创建一个条目,然后从“deals”表中删除该条目。它需要在特定时间执行。 这是我正在尝试使用的: DELIMITER $$ CREATE EV
我试图将两个存储过程的表结果存储到 phpmyadmin 例程窗口中的单个表中,这给了我 mariadb 语法错误。单独调用存储过程给出了结果。 存储过程代码 BEGIN CREATE TABLE t
我想在 videoview 中加载视频之前有一个进度条。但是我收到以下错误。我还添加了所有必要的导入。 我在 ANDROID 中使用 AIDE 这是我的代码 public class MainActi
我已经使用了 AsyncTask,但我不明白为什么在我的设备 (OS 4.0) 上测试时仍然出现错误。我的 apk 构建于 2.3.3 中。我想我把代码弄错了,但我不知道我的错误在哪里。任何人都请帮助
我在测试 friend 网站的安全性时,通过在 URL 末尾添加 ' 发现了 SQL 注入(inject)漏洞该网站是用zend框架构建的我遇到的问题是 MySQL -- 中的注释语法不起作用,因此页
我正在尝试使用堆栈溢出答案之一的交互式信息窗口。 链接如下: interactive infowindow 但是我在代码中使用 getMap() 时遇到错误。虽然我尝试使用 getMapAsync 但
当我编译以下代码时出现错误: The method addMouseListener(Player) is undefined for the type Player 代码: import java.
我是 Android 开发的初学者。我正在开发一个接收 MySql 数据然后将其保存在 SQLite 中的应用程序。 我将 Json 用于同步状态,以便我可以将未同步数据的数量显示为要同步的待处理数据
(这里是Hello world级别的自动化测试人员) 我正在尝试下载一个文件并将其重命名以便于查找。我收到一个错误....这是代码 @Test public void allDownload(
我只是在写另一个程序。并使用: while (cin) words.push_back(s); words是string的vector,s是string。 我的 RAM 使用量在 4 或 5
我是 AngularJS 的新手,我遇到了一个问题。我有一个带有提交按钮的页面,当我单击提交模式时必须打开并且来自 URL 的数据必须存在于模式中。现在,模式打开但它是空的并且没有从 URL 获取数据
我正在尝试读取一个文件(它可以包含任意数量的随机数字,但不会超过 500 个)并将其放入一个数组中。 稍后我将需要使用数组来做很多事情。 但到目前为止,这一小段代码给了我 no match for o
有些人在使用 make 命令进行编译时遇到了问题,所以我想我应该在这里尝试一下,我已经在以下操作系统的 ubuntu 32 位和挤压 64 位上尝试过 我克隆了 git 项目 https://gith
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