我启动 Gemfire 服务器并将他绑定到以下地址：myserver：10344。（服务器和定位器启动没有问题）之后，我通过GFSH和客户端"脉冲"检查连接。所有检查均成功。在下一步中，我开发了我的 Java 客户端，但无法连接到服务器。
我的项目是由具有以下依赖项的 Maven 构建的：
<dependency>
<groupId>com.pivotal.gemfirexd</groupId>
<artifactId>gemfirexd</artifactId>
<version>1.4.1</version>
</dependency>
<dependency>
<groupId>com.pivotal.gemfirexd</groupId>
<artifactId>gemfirexd-client</artifactId>
<version>1.4.1</version>
</dependency>
（所有 Gemfire 依赖项均从 http://dist.gemstone.com/maven/release 下载）
代码源：
package com.mycompany.app;
import java.sql.Connection;
import java.sql.DriverManager;
public class App {
private void connect() {
try {
Class.forName("com.pivotal.gemfirexd.jdbc.ClientDriver");
String x = "jdbc:gemfirexd://myserver:10344/";
System.out.println(x);
final Connection conn = DriverManager.getConnection(x);
System.out.println("Connected ");
conn.close();
System.out.println("Disconnected");
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main( String[] args ) {
new App().connect();
}
}
我得到以下异常：
java.sql.SQLNonTransientConnectionException: A communications error has been detected: Failed after trying all available servers: [], for control URL: myserver[10334].
at com.pivotal.gemfirexd.internal.client.am.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:77)
at com.pivotal.gemfirexd.internal.client.am.SqlException.getSQLException(SqlException.java:401)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.getPreferredServer(NetConnection.java:1554)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.preConnect(NetConnection.java:1902)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.newAgent_(NetConnection.java:2368)
at com.pivotal.gemfirexd.internal.client.am.Connection.<init>(Connection.java:595)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.<init>(NetConnection.java:248)
at com.pivotal.gemfirexd.internal.client.net.NetConnection40.<init>(NetConnection40.java:86)
at com.pivotal.gemfirexd.internal.client.net.ClientJDBCObjectFactoryImpl40.newNetConnection(ClientJDBCObjectFactoryImpl40.java:290)
at com.pivotal.gemfirexd.jdbc.ClientDriver.connect(ClientDriver.java:161)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.mycompany.app.App.connect(App.java:15)
at com.mycompany.app.App.main(App.java:27)
Caused by: DisconnectException 08006: A communications error has been detected: Failed after trying all available servers: [], for control URL: myserver[10334].
... 12 more
Caused by: java.sql.SQLNonTransientConnectionException: A communications error has been detected: Connection reset.
at com.pivotal.gemfirexd.internal.client.am.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:77)
at com.pivotal.gemfirexd.internal.client.am.SqlException.getSQLException(SqlException.java:401)
at com.pivotal.gemfirexd.jdbc.ClientDriver.connect(ClientDriver.java:170)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.getPreferredServer(NetConnection.java:1451)
... 11 more
Caused by: DisconnectException 08006: A communications error has been detected: Connection reset.
at com.pivotal.gemfirexd.internal.client.net.NetAgent.throwCommunicationsFailure(NetAgent.java:527)
at com.pivotal.gemfirexd.internal.client.net.Reply.fill(Reply.java:183)
at com.pivotal.gemfirexd.internal.client.net.Reply.ensureALayerDataInBuffer(Reply.java:222)
at com.pivotal.gemfirexd.internal.client.net.Reply.readDssHeader(Reply.java:324)
at com.pivotal.gemfirexd.internal.client.net.Reply.startSameIdChainParse(Reply.java:1154)
at com.pivotal.gemfirexd.internal.client.net.NetConnectionReply.readExchangeServerAttributes(NetConnectionReply.java:61)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.readServerAttributesAndKeyExchange(NetConnection.java:1013)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.flowServerAttributesAndKeyExchange(NetConnection.java:941)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.flowUSRIDONLconnect(NetConnection.java:796)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.flowConnect(NetConnection.java:580)
at com.pivotal.gemfirexd.internal.client.net.NetConnection.<init>(NetConnection.java:259)
at com.pivotal.gemfirexd.internal.client.net.NetConnection40.<init>(NetConnection40.java:86)
at com.pivotal.gemfirexd.internal.client.net.ClientJDBCObjectFactoryImpl40.newNetConnection(ClientJDBCObjectFactoryImpl40.java:290)
at com.pivotal.gemfirexd.jdbc.ClientDriver.connect(ClientDriver.java:161)
... 14 more
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at com.pivotal.gemfirexd.internal.client.net.Reply.fill(Reply.java:181)
... 26 more
我看到这是一个旧帖子，但以防万一你仍然想知道....
您在 jdbc url 中指定的端口引用了对等成员资格发现端口，而不是客户端端口（默认为 1527）。
启动定位器时，应该有关于客户端端口号的信息（如果未指定，则默认值为 1527）
。使用对等发现启动 GemFireXD 定位器：本地主机[10334]在地址本地主机/127.0.0.1 处启动 GemFireXD 定位器的网络服务器[1527]
您的 jdbc 网址应如下所示：
字符串 x = "jdbc：gemfirexd：//myserver：1527/";