针对带有SpringCloud和Eureka的功能区：java.lang.IllegalStateException：Samarths-MacBook-Pro.local没有可用实例这个问题，本篇文章
针对带有Spring Cloud和Eureka的功能区：java.lang.IllegalStateException：Samarths-MacBook- Pro.local没有可用实例这个问题，本篇文章进行了详细的解答，同时本文还将给你拓展Android camera2：java.lang.IllegalStateException：已经获得了maxImages(1),在获取更多内容之前调用#close、android – Room：java.lang.IllegalStateException：对于现有数据库,迁移没有正确、AOP拦截日志类，抛异常：java.lang.IllegalStateException: It is illegal to call this method if the current re...、com.google.gson.JsonSyntaxException：java.lang.IllegalStateException：预期BEGIN_ARRAY但是STRING等相关知识，希望可以帮助到你。
本文目录一览：- 带有Spring Cloud和Eureka的功能区：java.lang.IllegalStateException：Samarths-MacBook- Pro.local没有可用实例
- Android camera2：java.lang.IllegalStateException：已经获得了maxImages(1),在获取更多内容之前调用#close
- android – Room：java.lang.IllegalStateException：对于现有数据库,迁移没有正确
- AOP拦截日志类，抛异常：java.lang.IllegalStateException: It is illegal to call this method if the current re...
- com.google.gson.JsonSyntaxException：java.lang.IllegalStateException：预期BEGIN_ARRAY但是STRING
带有Spring Cloud和Eureka的功能区：java.lang.IllegalStateException：Samarths-MacBook- Pro.local没有可用实例
我正在使用带有Ribbon负载平衡器的Spring Boot Eureka客户端应用程序。
我有两个在Eureka注册的服务器实例，名称为“ TEST”。在客户端，我有以下代码从Eureka获取服务器。
@Configuration@ComponentScan@EnableAutoConfiguration@EnableEurekaClient@RestControllerpublic class EurekaConsumerApplication { @Autowired DiscoveryClient discoveryClient; @Autowired RestTemplate restTemplate; @RequestMapping(value = "/",method = RequestMethod.GET) String consumer(){ InstanceInfo instance = discoveryClient.getNextServerFromEureka("TEST", false); URI uri = UriComponentsBuilder.fromUriString(instance.getHomePageUrl() + "baseDir") .build() .toUri(); String baseDir = restTemplate.getForObject(uri, String.class); return baseDir; } public static void main(String[] args) { SpringApplication.run(EurekaConsumerApplication.class, args); }}application.yml
spring: application: name: consumerinfo: component: Consumer to fetch configurationserver: port: 8090eureka: instance: leaseRenewalIntervalInSeconds: 3 metadataMap: instanceId: ${vcap.application.instance_id:${spring.application.name}:${spring.application.instance_id:${random.value}}}client:# Default values comes from org.springframework.cloud.netflix.eurek.EurekaClientConfigBean region: default registryFetchIntervalSeconds: 5 instanceInfoReplicationIntervalSeconds: 5 initialInstanceInfoReplicationIntervalSeconds: 5 serviceUrl: defaultZone: http://localhost:8761/eureka/ availabilityZones: default: ${APPLICATION_DOMAIN:${DOMAIN:defaultZone}}但是，当我使用以下命令命中宁静的端点时，会出现错误：
curl http://localhost:8090/这是错误：
{"exception":"java.lang.IllegalStateException","message":"org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: No instances available for Samarths-MacBook-Pro.local","path":"/"}堆栈跟踪：
2015-07-22 14:37:35.005 INFO 13841 --- [tp1334391583-19] c.netflix.loadbalancer.BaseLoadBalancer : Client:Samarths-MacBook-Pro.local instantiated a LoadBalancer:DynamicServerListLoadBalancer:{NFLoadBalancer:name=Samarths-MacBook-Pro.local,current list of Servers=[],Load balancer stats=Zone stats: {},Server stats: []}ServerList:null2015-07-22 14:37:35.009 INFO 13841 --- [tp1334391583-19] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client Samarths-MacBook-Pro.local initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:name=Samarths-MacBook-Pro.local,current list of Servers=[],Load balancer stats=Zone stats: {},Server stats: []}ServerList:org.springframework.cloud.netflix.ribbon.eureka.DomainExtractingServerList@681eda372015-07-22 14:37:35.029 WARN 13841 --- [tp1334391583-19] o.eclipse.jetty.servlet.ServletHandler :org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: No instances available for Samarths-MacBook-Pro.localat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:295)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty..ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:68)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)at org.eclipse.jetty.server.Server.handle(Server.java:499)at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)at java.lang.Thread.run(Thread.java:745)Caused by: java.lang.IllegalStateException: No instances available for Samarths-MacBook-Pro.localat org.springframework.cloud.netflix.ribbon.RibbonClientHttpRequestFactory.createRequest(RibbonClientHttpRequestFactory.java:64)at org.springframework.http.client.support.HttpAccessor.createRequest(HttpAccessor.java:76)at org.springframework.web.client.Rlate.doExecute(RestTemplate.java:565)at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:545)at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:253)at com.securityscorecard.eureka.consumer.EurekaConsumerApplication.consumer(EurekaConsumerApplication.java:53)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:497)at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)... 38 common frames omitted看起来我的服务器列表为空。
答案1
小编典典将RestTemplate您自动连接已经连接到功能区。因此，您需要手动RestTemplate进行查找，然后尝试查找传递给功能区的主机名。您有两种选择：1）不要使用netflixDiscoveryClient并将serviceId作为逻辑主机名传递到功能区（http://TEST/myservice），2）不要使用自动装配RestTemplate，为您的班级创建一个新的。我的选择是第一。
Android camera2：java.lang.IllegalStateException：已经获得了maxImages(1),在获取更多内容之前调用#close
您好无法解决此问题.
我已经在ImageAvailable回调中调用了imageReader.close,但仍然有错误：
java.lang.IllegalStateException: maxImages (1) has already been acquired,call #close before acquiring more.
我的代码在这里：
private ImageReader.OnImageAvailableListener imageAvailableListener = new ImageReader.OnImageAvailableListener()
{
@Override
public void onImageAvailable(ImageReader reader) {
Image img = mReader.acquireLatestimage();
mReader.close();
}
};
PS.我也使用参数阅读器,但似乎没有解决问题
解决方法
好的,我已经解决了我的问题.我需要关闭img对象而不是ImageReader.
android – Room：java.lang.IllegalStateException：对于现有数据库,迁移没有正确
使用的房间版本： – 1.1.1-rc1
我有一个由ormlite实现的现有数据库.我正在尝试使用ormlite生成的现有sqlite文件迁移到Room.
当我们在ormlite中对table列使用long数据类型时,它会在sqlite中被转换为BIGINT.所以创建的模式包含BIGINT类型的列,它是房间的未知类型.当我尝试使用Room升级应用程序时,我将获得迁移异常.
java.lang.IllegalStateException：迁移没有正确
Process: com.sample.playground, PID: 5587
java.lang.IllegalStateException: Migration didn't properly handle SampleReports(com.sample.playground.model.SampleReport
Expected:
TableInfo{name='SampleReports', columns={timeslot=Column{name='timeslot', type='INTEGER', affinity='3', notNull=true, primaryKeyPosition=0}, environment=Column{name='environment', type='TEXT', affinity='2', notNull=true, primaryKeyPosition=0}, timestamp=Column{name='timestamp', type='INTEGER', affinity='3', notNull=true, primaryKeyPosition=0}, trigger=Column{name='trigger', type='INTEGER', affinity='3', notNull=true, primaryKeyPosition=0}, imeisvSvn=Column{name='imeisvSvn', type='TEXT', affinity='2', notNull=false, primaryKeyPosition=0}, _id=Column{name='_id', type='INTEGER', affinity='3', notNull=true, primaryKeyPosition=1}}, foreignKeys=[], indices=[]}
Found:
TableInfo{name='SampleReports', columns={environment=Column{name='environment', type='TEXT', affinity='2', notNull=true, primaryKeyPosition=0}, timeslot=Column{name='timeslot', type='BIGINT', affinity='3', notNull=true, primaryKeyPosition=0}, trigger=Column{name='trigger', type='INTEGER', affinity='3', notNull=true, primaryKeyPosition=0}, timestamp=Column{name='timestamp', type='BIGINT', affinity='3', notNull=true, primaryKeyPosition=0}, _id=Column{name='_id', type='INTEGER', affinity='3', notNull=false, primaryKeyPosition=1}}, foreignKeys=[], indices=[]}
at com.sample.playground.model.SampleReport.SampleReportRoomDbHelper_Impl$1.validateMigration(SampleReportRoomDbHelper_Impl.java:77)
at android.arch.persistence.room.RoomOpenHelper.onUpgrade(RoomOpenHelper.java:87)
at android.arch.persistence.db.framework.FrameworksqliteOpenHelper$OpenHelper.onUpgrade(FrameworksqliteOpenHelper.java:133)
at android.database.sqlite.sqliteOpenHelper.getDatabaseLocked(sqliteOpenHelper.java:256)
at android.database.sqlite.sqliteOpenHelper.getWritableDatabase(sqliteOpenHelper.java:163)
at android.arch.persistence.db.framework.FrameworksqliteOpenHelper$OpenHelper.getWritableSupportDatabase(FrameworksqliteOpenHelper.java:96)
at android.arch.persistence.db.framework.FrameworksqliteOpenHelper.getWritableDatabase(FrameworksqliteOpenHelper.java:54)
at android.arch.persistence.room.RoomDatabase.query(RoomDatabase.java:233)
at com.sample.playground.model.SampleReportDao_Impl.getReports(SampleReportDao_Impl.java:300)
使用BigInteger尝试使用TypeConverter仍然无法正常工作.
解决方法:
我认为您需要通过重写migrate方法来相应地转换表,以便它
– 根据预期的列创建一个中间表,
– 将数据复制到中间表,
– 放下原来的桌子
– 然后将中间表的名称更改为原始名称
例如：
DROP TABLE IF EXISTS SampleReports_intermediate;
CREATE TABLE IF NOT EXISTS SampleReports_intermediate (
timeslot INTEGER NOT NULL,
environment TEXT NOT NULL,
timestamp INTEGER NOT NULL,
`trigger` INTEGER NOT NULL,
imeisvSvn TEXT,
_id INTEGER PRIMARY KEY
);
INSERT INTO SampleReports_intermediate (environment, timeslot, `trigger`, timestamp, _id)
SELECT environment, timeslot,`trigger`, timestamp, _id FROM SampleReports
;
DROP TABLE IF EXISTS SampleReports;
ALTER TABLE SampleReports_intermediate RENAME TO SampleReports;
如果您没有使用1.1室,请尝试使用它,因为：
Room 1.1 added support for sqlite types that were not in Room
Room Database Migration didn’t properly handle conversion
AOP拦截日志类，抛异常：java.lang.IllegalStateException: It is illegal to call this method if the current re...
AOP的日志拦截类中，抛出异常：
java.lang.IllegalStateException: It is illegal to call this method if the current request is not in asynchronous mode主要原因：对方法的参数使用JSON.toJSONString(args[index])转换时，有异常抛出【如果参数类型是请求和响应的http，使用JSON.toJSONString()转换会抛异常】
解决方案：将不能进行序列化的入参过滤掉，只要留下我们需要记录的入参参数记录到日志中即可
完整代码：
/**
* 从切点中解析出该切点对应的方法
* @param point point
* @throws ClassNotFoundException
* @throws IOException
* @author 洪墨水
*/
private void getRequestParams(ProceedingJoinPoint point,
RecordMessage recordMessage)
throws ClassNotFoundException, IOException
{
/* 类名 */
String targetObject = point.getTarget().getClass().getName();
/* 方法名 */
String methodName = point.getSignature().getName();
recordMessage.setTargetObject(targetObject);
recordMessage.setMethod(methodName);
Object[] args = point.getArgs();
Class<?> targetClass = Class.forName(targetObject);
Method[] methods = targetClass.getMethods();
StringBuilder requestBuilder = new StringBuilder(0);
/**
* 遍历方法 获取能与方法名相同且请求参数个数也相同的方法
*/
for (Method method : methods)
{
if (!method.getName().equals(methodName))
{
continue;
}
Class<?>[] classes = method.getParameterTypes();
if (classes.length != args.length)
{
continue;
}
for (int index = 0; index < classes.length; index++)
{
// 如果参数类型是请求和响应的http，则不需要拼接【这两个参数，使用JSON.toJSONString()转换会抛异常】
if (args[index] instanceof HttpServletRequest
|| args[index] instanceof HttpServletResponse)
{
continue;
}
requestBuilder.append(args[index] == null ? ""
: JSON.toJSONString(args[index]));
}
recordMessage.setRequestParames(requestBuilder.toString());
}
return;
}
com.google.gson.JsonSyntaxException：java.lang.IllegalStateException：预期BEGIN_ARRAY但是STRING
这是我使用Gson进行序列化的第一种方法.我像这样回复了我的Android应用程序的facebook响应
我的Json：
{"data": [
{
"pic_square": "https://fbcdn-profile-a.akamaihd.netxxxx1388091435_797626998_q.jpg",
"uid": "10202xxx852765",
"name": "Mister X"
},
{
"pic_square": "https://fbcdn-profile-a.akamaihd.netxxxx1388091435_797626998_q.jpg",
"uid": "10202xxx852765",
"name": "Mister X"
}
]
}
try {
final GsonBuilder builder = new GsonBuilder();
final Gson gson = builder.create();
JSONObject data= response.getGraphObject().getInnerjsonObject();
FacebookResponses facebookResponses= gson.fromJson(data.toString(),FacebookResponses.class); //exception here
Log.i(TAG, "Result: " + facebookResponses.toString());
} catch (JsonSyntaxException e) {
e.printstacktrace();
}
我的课
public class FacebookResponses implements Serializable {
private static final long serialVersionUID = 1L;
@Serializedname("data");
private FacebookRisp[] data;
}
class FacebookRisp implements Serializable {
private static final long serialVersionUID = 1L;
@Serializedname("pic_square")
private String[] pic_square;
@Serializedname("uid")
private String[] uid;
@Serializedname("name")
private String[] name;
public String[] getPic_square() {
return pic_square;
}
public void setPic_square(String[] pic_square) {
this.pic_square = pic_square;
}
public String[] getUid() {
return uid;
}
public void setUid(String[] uid) {
this.uid = uid;
}
public String[] getName() {
return name;
}
public void setName(String[] name) {
this.name = name;
}
}
我明白了
com.google.gson.JsonSyntaxException：java.lang.IllegalStateException：预期为BEGIN_ARRAY但在第1行第118列为STRING
更新：
我修改了爱琴海的答案,问题是[]
@Serializedname("pic_square")
private String**[]** pic_square; //ex here and others
解决方法:
将您的FacebookResponses类更改为：
private class FacebookResponses {
private Data[] data;
}
private class Data {
@Serializedname("pic_square")
private String picSquare;
private String uid;
private String name;
}
编辑：因为您的json响应的结构如下所示：
关于带有Spring Cloud和Eureka的功能区：java.lang.IllegalStateException：Samarths-MacBook- Pro.local没有可用实例的问题我们已经讲解完毕，感谢您的阅读，如果还想了解更多关于Android camera2：java.lang.IllegalStateException：已经获得了maxImages(1),在获取更多内容之前调用#close、android – Room：java.lang.IllegalStateException：对于现有数据库,迁移没有正确、AOP拦截日志类，抛异常：java.lang.IllegalStateException: It is illegal to call this method if the current re...、com.google.gson.JsonSyntaxException：java.lang.IllegalStateException：预期BEGIN_ARRAY但是STRING等相关内容，可以在本站寻找。
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