我正在使用spring-cloud-starter(即具有所有微服务功能的spring boot).当我在使用javanica @HystrixCommand注释的组件中创建hystrix方法时,请按照javanica github网站(https://github.com/Netflix/Hystrix/tree/master/hystrix-contrib/hystrix-javanica)上的说明进行操作该方法运行async,无论我是使用'Future <>'还是Reactive执行'Observable <>',都没有运行/执行,
java.lang.ClassCastException: springbootdemo.EricComponent$1 cannot be cast to springbootdemo.Eric每当我尝试拉取结果(在Future <>的情况下)或得到回调(在Reactive Execution的情况下......并且println不会触发,所以它确实没有运行).
public class Application { ...
}
@RestController
@RequestMapping(value = "/makebunchofcalls/{num}")
class EricController { ..
@RequestMapping(method={RequestMethod.POST})
ArrayList<Eric> doCalls(@PathVariable Integer num) throws IOException {
ArrayList<Eric> ale = new ArrayList<Eric>(num);
for (int i =0; i<num; i++) {
rx.Observable<Eric> oe = this.ericComponent.doRestTemplateCallAsync(i);
oe.subscribe(new Action1<Eric>() {
@Override
public void call(Eric e) { // AT RUNTIME, ClassCastException
ale.add(e);
}
});
}
return ale;
}
@Component
class EricComponent { …我使用spring-cloud构建了一个spring boot应用程序,并希望在我的客户端应用程序(也是一个微服务)中使用RestTemplate,这样我就可以继续使用mockMvc进行集成测试.我正在使用我正在调用的服务中的客户端微服务和eureka客户端的默认ribbon/eureka/hystrix客户端设置.这是有效的(一旦我发现serviceIds是标识restTemplate中的服务端点的东西).我的问题是,我似乎无法更改restTemplate读取和连接超时,似乎默认为300毫秒.
电话详情:
`@Configuration
@EnableAutoConfiguration
@ComponentScan
@EnableConfigurationProperties
@EnableHystrix
@EnableEurekaClient
public class Application { ... public static void main(String[] args) {} ... }
@Component
class EricComponentToDoHystrix { // apparently this has to be a component for hystrix to work btw
@Autowired
RestTemplate restTemplate;
..
@HystrixCommand(fallbackMethod="defaultRestTemplateCall")
public void doRestTemplateCall()
ResponseEntity<String> result = restTemplate.getForEntity("http://someservice/doSomething", String.class); // actually make a call
..
}
}`
使用包含以下内容的application.properties:
spring:
cloud:
client:
serviceIds:
- someservice
someservice:
ribbon:
#listOfServers: localhost:7080
#NIWSServerListClassName: com.netflix.niws.loadbalancer.DiscoveryEnabledNIWSServerList
# the eureka vipAddress of the target …我正在使用Spring Boot 1.3.0.RC1到spring-cloud Brixton.M2并且无法将spring boot属性拉入logback.xml,正如此功能所暗示的那样checkin 支持springProperty的logback配置
我正在使用.yml文件,并希望从bootstrap.yml或application.yml中提取应用程序名称.
的logback-spring.xml:
<configuration>
<springProperty scope="context" name="myappName" source="spring.application.name"/>
<contextName>${myappName}</contextName>
<appender name="logFileAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>logs/${myappName}.log</file>
...
</appender>
...
</configuration>
这里的文档Spring Boot Logback扩展没有多大帮助.
这个其他stackoverflow问题无法在logback.xml中使用Spring Property占位符是较旧的,也不适用于我.任何见解都会有所帮助.
每个请求,这是正在使用的相关依赖关系树
[INFO] +- org.springframework.boot:spring-boot-starter-web:jar:1.3.0.RC1:compile
[INFO] | +- org.springframework.boot:spring-boot-starter:jar:1.3.0.RC1:compile
[INFO] | | +- org.springframework.boot:spring-boot:jar:1.3.0.RC1:compile
[INFO] | | +- org.springframework.boot:spring-boot-autoconfigure:jar:1.3.0.RC1:compile
[INFO] | | +- org.springframework.boot:spring-boot-starter-logging:jar:1.3.0.RC1:compile
[INFO] | | | +- ch.qos.logback:logback-classic:jar:1.1.3:compile
[INFO] | | | | \- ch.qos.logback:logback-core:jar:1.1.3:compile
[INFO] | | | +- org.slf4j:jcl-over-slf4j:jar:1.7.12:compile
[INFO] | | | +- org.slf4j:jul-to-slf4j:jar:1.7.12:compile
[INFO] …我正在尝试在我们的基础pom中构建代码,通过Eureka自动配置Spring Cloud Config服务器查找.我们这样做是为了避免模仿开发人员构建微服务的.yml属性.例如,我们想要java配置从这些属性触发的所有行为:
spring:
application:
name: MyMicroservice
cloud:
config:
enabled: true
server:
prefix: /diagnostics/admin/config
failFast: true
discovery:
enabled: true
serviceId: echo
management:
context-path: /diagnostics/admin
eureka:
password: password
client:
serviceUrl:
defaultZone: http://user:${eureka.password}@localhost:8761/eureka/
instance:
leaseRenewalIntervalInSeconds: 10
statusPageUrlPath: /diagnostics/admin/info
healthCheckUrlPath: /diagnostics/admin/health
经过大量实验后,除了Eureka发现的配置服务器(导致没有覆盖的配置属性)之外,以下方法大部分都有效:
@Order(-1)
public class AdditionalBootstrapPropertySourceLocator implements PropertySourceLocator {
@Override
public PropertySource<?> locate(Environment environment) {
Map<String, Object> theBootstrapYmlConfig = new HashMap<>();
theBootstrapYmlConfig.put("spring.cloud.config.enabled", new Boolean(true));
theBootstrapYmlConfig.put("spring.cloud.config.server.prefix", "/diagnostics/admin/config");
theBootstrapYmlConfig.put("spring.cloud.config.failFast", new Boolean(true));
theBootstrapYmlConfig.put("spring.cloud.config.discovery.enabled", new Boolean(true));
theBootstrapYmlConfig.put("spring.cloud.config.discovery.serviceId", "echo");
theBootstrapYmlConfig.put("management.context-path", "/diagnostics/admin");
theBootstrapYmlConfig.put("eureka.client.serviceUrl.defaultZone", "http://user:password@localhost:8761/eureka/");
theBootstrapYmlConfig.put("eureka.instance.leaseRenewalIntervalInSeconds", new Integer(10));
theBootstrapYmlConfig.put("eureka.instance.statusPageUrlPath", "/diagnostics/admin/info"); …我正在试图弄清楚如何在使用Eureka的Spring Boot应用程序上构建集成测试.说我有一个测试
@WebAppConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = {Application.class})
public class MyIntegrationTest {
@Autowired
protected WebApplicationContext webAppContext;
protected MockMvc mockMvc;
@Autowired
RestTemplate restTemplate;
@Before
public void setup() {
this.mockMvc = MockMvcBuilders.webAppContextSetup(this.webApplicationContext).build();
}
@Test
public void testServicesEdgeCases() throws Exception {
// test no registered services
this.mockMvc.perform(get("/api/v1/services").accept(MediaType.APPLICATION_JSON).contentType(MediaType.APPLICATION_JSON))
.andDo(print())
.andExpect(status().isOk())
.andExpect(jsonPath("$").value(jsonArrayWithSize(0)));
}
}
我在我的代码路径中有api调用:
DiscoveryManager.getInstance().getDiscoveryClient().getApplications();
这将是NPE.discoveryClient返回null.如果我直接启动Spring启动应用程序并自己使用API,代码工作正常.我没有任何具体的配置文件使用.我是否需要为Eureka设置一些特殊的东西,以便为发现客户端进行测试构建？
java service-discovery spring-boot spring-cloud netflix-eureka
我基于@spencergibb feign-eureka spring cloud starter示例构建了一个超级简单的Hystrix短路示例.起初我以为我无法得到hystrix javanica默认的fallbackMethod因为假装触发..现在,删除假,hystrix默认的fallbackMethod仍然没有捕获异常.
的pom.xml
<parent>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-parent</artifactId>
<version>1.0.0.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>
:
</dependencies>
主文件:
@SpringBootApplication
@EnableDiscoveryClient
@EnableHystrix
@RestController
public class HelloClientApplication {
@Autowired
HelloClientComponent helloClientComponent;
@RequestMapping("/")
public String hello() {
return helloClientComponent.makeMultipleCalls();
}
public static void main(String[] args) {
SpringApplication.run(HelloClientApplication.class, args);
}
}
HelloClientComponent.java(创建因为我知道javanica希望在spring托管组件或服务中):
@Component
public class HelloClientComponent {
@Autowired
RestTemplate restTemplate;
public String …让应用程序在Kindle Fire上的亚马逊市场展示的诀窍是什么？
我已将我的Android应用程序提交到亚马逊商城,并在几个月前获得批准.当我在我的摩托罗拉Xoom或我妻子的Nexus One上搜索该应用程序(通过亚马逊商城)时,我能够找到它.在Kindle上搜索,无处可寻.
我在https://developer.amazon.com/help/faq.html上阅读了亚马逊关于Kindle Fire 的建议,并没有给出任何暗示它为什么不显示的提示.我的清单中有以下相关条目:
<supports-screens
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:resizeable="true"
android:anyDensity="true"
/>
<uses-permission android:name="android.permission.GET_ACCOUNTS"></uses-permission>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-sdk android:minSdkVersion="8" />
spring-cloud ×5
java ×4
spring-boot ×4
hystrix ×2
amazon ×1
android ×1
kindle-fire ×1
logback ×1