java.lang.IllegalStateException: 此 VM 中已存在到分布式系统的连接。它具有以下配置：
java.lang.IllegalStateException: A connection to a distributed system already exists in this VM. It has the following configuration:
enter image description here public class GemfireTest {
public static void main(String[] args) throws NameResolutionException, TypeMismatchException, QueryInvocationTargetException, FunctionDomainException {
ServerLauncher serverLauncher = new ServerLauncher.Builder()
.setMemberName("server1")
.setServerPort(40404)
.set("start-locator", "127.0.0.1[9090]")
.build();
serverLauncher.start();
String queryString = "SELECT * FROM /gemregion";
ClientCache cache = new ClientCacheFactory().create();
QueryService queryService = cache.getQueryService();
Query query = queryService.newQuery(queryString);
SelectResults results = (SelectResults)query.execute();
int size = results.size();
System.out.println(size);
}
}
尝试 运行 我的 java 应用程序中的定位器和服务器出现以下异常：
Exception in thread "main" java.lang.IllegalStateException: A
connection to a distributed system already exists in this VM. It has
the following configuration: ack-severe-alert-threshold="0"
ack-wait-threshold="15" archive-disk-space-limit="0"
archive-file-size-limit="0" async-distribution-timeout="0"
async-max-queue-size="8" async-queue-timeout="60000"
bind-address="" cache-xml-file="cache.xml"
cluster-configuration-dir="" cluster-ssl-ciphers="any"
cluster-ssl-enabled="false" cluster-ssl-keystore=""
cluster-ssl-keystore-password="" cluster-ssl-keystore-type=""
cluster-ssl-protocols="any"
cluster-ssl-require-authentication="true" cluster-ssl-truststore=""
cluster-ssl-truststore-password="" conflate-events="server"
conserve-sockets="true" delta-propagation="true"
deploy-working-dir="C:\Users\Saranya\IdeaProjects\Gemfire"
disable-auto-reconnect="false" disable-tcp="false"
distributed-system-id="-1" distributed-transactions="false"
durable-client-id="" durable-client-timeout="300"
enable-cluster-configuration="true"
enable-network-partition-detection="true"
enable-time-statistics="false" enforce-unique-host="false"
gateway-ssl-ciphers="any" gateway-ssl-enabled="false"
gateway-ssl-keystore="" gateway-ssl-keystore-password=""
gateway-ssl-keystore-type="" gateway-ssl-protocols="any"
gateway-ssl-require-authentication="true" gateway-ssl-truststore=""
gateway-ssl-truststore-password="" groups=""
http-service-bind-address="" http-service-port="7070"
http-service-ssl-ciphers="any" http-service-ssl-enabled="false"
http-service-ssl-keystore="" http-service-ssl-keystore-password=""
http-service-ssl-keystore-type="" http-service-ssl-protocols="any"
http-service-ssl-require-authentication="false"
http-service-ssl-truststore=""
http-service-ssl-truststore-password="" jmx-manager="false"
jmx-manager-access-file="" jmx-manager-bind-address=""
jmx-manager-hostname-for-clients="" jmx-manager-http-port="7070"
jmx-manager-password-file="" jmx-manager-port="1099"
jmx-manager-ssl-ciphers="any" jmx-manager-ssl-enabled="false"
jmx-manager-ssl-keystore="" jmx-manager-ssl-keystore-password=""
jmx-manager-ssl-keystore-type="" jmx-manager-ssl-protocols="any"
jmx-manager-ssl-require-authentication="true"
jmx-manager-ssl-truststore="" jmx-manager-ssl-truststore-password=""
jmx-manager-start="false" jmx-manager-update-rate="2000"
load-cluster-configuration-from-dir="false" locator-wait-time="0"
locators="127.0.0.1[9090]" (wanted "") lock-memory="false"
log-disk-space-limit="0"
log-file="C:\Users\Saranya\IdeaProjects\Gemfire\server1.log"
(wanted "") log-file-size-limit="0" log-level="config" max-num-reconnect-tries="3" max-wait-time-reconnect="60000"
mcast-address="/239.192.81.1" mcast-flow-control="1048576, 0.25,
5000" mcast-port="0" mcast-recv-buffer-size="1048576"
mcast-send-buffer-size="65535" mcast-ttl="32"
member-timeout="5000" membership-port-range="[1024,65535]"
memcached-bind-address="" memcached-port="0"
memcached-protocol="ASCII" name="server1" (wanted "")
off-heap-memory-size="" redis-bind-address="" redis-password=""
redis-port="0" redundancy-zone="" remote-locators=""
remove-unresponsive-client="false" roles=""
security-client-accessor="" security-client-accessor-pp=""
security-client-auth-init="" security-client-authenticator=""
security-client-dhalgo="" security-log-file=""
security-log-level="config" security-manager=""
security-peer-auth-init="" security-peer-authenticator=""
security-peer-verifymember-timeout="1000" security-post-processor=""
security-shiro-init="" security-udp-dhalgo=""
serializable-object-filter="!" server-bind-address=""
server-ssl-ciphers="any" server-ssl-enabled="false"
server-ssl-keystore="" server-ssl-keystore-password=""
server-ssl-keystore-type="" server-ssl-protocols="any"
server-ssl-require-authentication="true" server-ssl-truststore=""
server-ssl-truststore-password="" socket-buffer-size="32768"
socket-lease-time="60000" ssl-ciphers="any" ssl-cluster-alias=""
ssl-default-alias="" ssl-enabled-components="[]"
ssl-gateway-alias="" ssl-jmx-alias="" ssl-keystore=""
ssl-keystore-password="" ssl-keystore-type="" ssl-locator-alias=""
ssl-protocols="any" ssl-require-authentication="true"
ssl-server-alias="" ssl-truststore="" ssl-truststore-password=""
ssl-truststore-type="" ssl-web-alias=""
ssl-web-require-authentication="false" start-dev-rest-api="false"
start-locator="127.0.0.1[9090]" (wanted "")*
statistic-archive-file="" statistic-sample-rate="1000"
statistic-sampling-enabled="true" tcp-port="0"
udp-fragment-size="60000" udp-recv-buffer-size="1048576"
udp-send-buffer-size="65535" use-cluster-configuration="true"
user-command-packages="" validate-serializable-objects="false"
at
org.apache.geode.distributed.internal.InternalDistributedSystem.validateSameProperties(InternalDistributedSystem.java:2959)
at
org.apache.geode.distributed.DistributedSystem.connect(DistributedSystem.java:199)
at
org.apache.geode.cache.client.ClientCacheFactory.basicCreate(ClientCacheFactory.java:243)
at
org.apache.geode.cache.client.ClientCacheFactory.create(ClientCacheFactory.java:214)
at GemfireTest.main(GemfireTest.java:61)
如何解决这个异常？
这里的错误很容易解释：在单个 JVM 中不能有多个到分布式系统的连接。在这种特殊情况下，您在同一个 JVM 中同时启动服务器缓存 (ServerLauncher) 和客户端缓存 (ClientCacheFactory)，这是不受支持的。
要解决此问题，请使用两个不同的应用程序或 JVM，一个用于服务器，另一个用于执行查询的客户端。
干杯。
enter image description here public class GemfireTest {
public static void main(String[] args) throws NameResolutionException, TypeMismatchException, QueryInvocationTargetException, FunctionDomainException {
ServerLauncher serverLauncher = new ServerLauncher.Builder()
.setMemberName("server1")
.setServerPort(40404)
.set("start-locator", "127.0.0.1[9090]")
.build();
serverLauncher.start();
String queryString = "SELECT * FROM /gemregion";
ClientCache cache = new ClientCacheFactory().create();
QueryService queryService = cache.getQueryService();
Query query = queryService.newQuery(queryString);
SelectResults results = (SelectResults)query.execute();
int size = results.size();
System.out.println(size);
}
}
尝试 运行 我的 java 应用程序中的定位器和服务器出现以下异常：
Exception in thread "main" java.lang.IllegalStateException: A connection to a distributed system already exists in this VM. It has the following configuration: ack-severe-alert-threshold="0"
ack-wait-threshold="15" archive-disk-space-limit="0"
archive-file-size-limit="0" async-distribution-timeout="0"
async-max-queue-size="8" async-queue-timeout="60000"
bind-address="" cache-xml-file="cache.xml"
cluster-configuration-dir="" cluster-ssl-ciphers="any"
cluster-ssl-enabled="false" cluster-ssl-keystore=""
cluster-ssl-keystore-password="" cluster-ssl-keystore-type=""
cluster-ssl-protocols="any"
cluster-ssl-require-authentication="true" cluster-ssl-truststore="" cluster-ssl-truststore-password="" conflate-events="server"
conserve-sockets="true" delta-propagation="true"
deploy-working-dir="C:\Users\Saranya\IdeaProjects\Gemfire"
disable-auto-reconnect="false" disable-tcp="false"
distributed-system-id="-1" distributed-transactions="false"
durable-client-id="" durable-client-timeout="300"
enable-cluster-configuration="true"
enable-network-partition-detection="true"
enable-time-statistics="false" enforce-unique-host="false"
gateway-ssl-ciphers="any" gateway-ssl-enabled="false"
gateway-ssl-keystore="" gateway-ssl-keystore-password=""
gateway-ssl-keystore-type="" gateway-ssl-protocols="any"
gateway-ssl-require-authentication="true" gateway-ssl-truststore="" gateway-ssl-truststore-password="" groups=""
http-service-bind-address="" http-service-port="7070"
http-service-ssl-ciphers="any" http-service-ssl-enabled="false"
http-service-ssl-keystore="" http-service-ssl-keystore-password=""
http-service-ssl-keystore-type="" http-service-ssl-protocols="any"
http-service-ssl-require-authentication="false"
http-service-ssl-truststore=""
http-service-ssl-truststore-password="" jmx-manager="false"
jmx-manager-access-file="" jmx-manager-bind-address=""
jmx-manager-hostname-for-clients="" jmx-manager-http-port="7070"
jmx-manager-password-file="" jmx-manager-port="1099"
jmx-manager-ssl-ciphers="any" jmx-manager-ssl-enabled="false"
jmx-manager-ssl-keystore="" jmx-manager-ssl-keystore-password=""
jmx-manager-ssl-keystore-type="" jmx-manager-ssl-protocols="any"
jmx-manager-ssl-require-authentication="true"
jmx-manager-ssl-truststore="" jmx-manager-ssl-truststore-password="" jmx-manager-start="false" jmx-manager-update-rate="2000"
load-cluster-configuration-from-dir="false" locator-wait-time="0"
locators="127.0.0.1[9090]" (wanted "") lock-memory="false"
log-disk-space-limit="0"
log-file="C:\Users\Saranya\IdeaProjects\Gemfire\server1.log" (wanted "") log-file-size-limit="0" log-level="config" max-num-reconnect-tries="3" max-wait-time-reconnect="60000"
mcast-address="/239.192.81.1" mcast-flow-control="1048576, 0.25, 5000" mcast-port="0" mcast-recv-buffer-size="1048576"
mcast-send-buffer-size="65535" mcast-ttl="32"
member-timeout="5000" membership-port-range="[1024,65535]"
memcached-bind-address="" memcached-port="0"
memcached-protocol="ASCII" name="server1" (wanted "")
off-heap-memory-size="" redis-bind-address="" redis-password=""
redis-port="0" redundancy-zone="" remote-locators=""
remove-unresponsive-client="false" roles=""
security-client-accessor="" security-client-accessor-pp=""
security-client-auth-init="" security-client-authenticator=""
security-client-dhalgo="" security-log-file=""
security-log-level="config" security-manager=""
security-peer-auth-init="" security-peer-authenticator=""
security-peer-verifymember-timeout="1000" security-post-processor="" security-shiro-init="" security-udp-dhalgo=""
serializable-object-filter="!" server-bind-address=""
server-ssl-ciphers="any" server-ssl-enabled="false"
server-ssl-keystore="" server-ssl-keystore-password=""
server-ssl-keystore-type="" server-ssl-protocols="any"
server-ssl-require-authentication="true" server-ssl-truststore=""
server-ssl-truststore-password="" socket-buffer-size="32768"
socket-lease-time="60000" ssl-ciphers="any" ssl-cluster-alias=""
ssl-default-alias="" ssl-enabled-components="[]"
ssl-gateway-alias="" ssl-jmx-alias="" ssl-keystore=""
ssl-keystore-password="" ssl-keystore-type="" ssl-locator-alias="" ssl-protocols="any" ssl-require-authentication="true"
ssl-server-alias="" ssl-truststore="" ssl-truststore-password=""
ssl-truststore-type="" ssl-web-alias=""
ssl-web-require-authentication="false" start-dev-rest-api="false"
start-locator="127.0.0.1[9090]" (wanted "")*
statistic-archive-file="" statistic-sample-rate="1000"
statistic-sampling-enabled="true" tcp-port="0"
udp-fragment-size="60000" udp-recv-buffer-size="1048576"
udp-send-buffer-size="65535" use-cluster-configuration="true"
user-command-packages="" validate-serializable-objects="false"at org.apache.geode.distributed.internal.InternalDistributedSystem.validateSameProperties(InternalDistributedSystem.java:2959) at org.apache.geode.distributed.DistributedSystem.connect(DistributedSystem.java:199) at org.apache.geode.cache.client.ClientCacheFactory.basicCreate(ClientCacheFactory.java:243) at org.apache.geode.cache.client.ClientCacheFactory.create(ClientCacheFactory.java:214) at GemfireTest.main(GemfireTest.java:61)
如何解决这个异常？
这里的错误很容易解释：在单个 JVM 中不能有多个到分布式系统的连接。在这种特殊情况下，您在同一个 JVM 中同时启动服务器缓存 (ServerLauncher) 和客户端缓存 (ClientCacheFactory)，这是不受支持的。
要解决此问题，请使用两个不同的应用程序或 JVM，一个用于服务器，另一个用于执行查询的客户端。
干杯。