Question

已更新

无法连接到Postgres数据库。 postgres的依赖关系是通过maven添加的。

Maven依赖

<dependency>
 <groupId>postgresql</groupId>
 <artifactId>postgresql</artifactId>
 <version>9.1-901-1.jdbc4</version>
</dependency>

Postgres Pool

public class PostgresDB implements DBPool {
public PostgresDB()  {
}

private static ComboPooledDataSource comboPooledDataSource = new ComboPooledDataSource();

static {
    try {
        Properties props = new Properties();
        props.setProperty("ssl", "false");
        comboPooledDataSource.setDriverClass( "org.postgresql.Driver" );
        comboPooledDataSource.setJdbcUrl("jdbc:postgresql://ec2-79-125-4-72.eu-west-1.compute.amazonaws.com:5432/d35hi5u7rnue7f");
        comboPooledDataSource.setUser("user");
        comboPooledDataSource.setPassword("xxxxxxxx");
        comboPooledDataSource.setProperties(props);
    } catch (Exception e) {
        System.out.println("Error");
        // handle the exception
    }
}

public Connection getConnection() throws SQLException {
    return comboPooledDataSource.getConnection();
}
}

获得连接的代码

Connection connection = PostgresDB.getConnection();

错误

警告：com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@2326357e-尝试获取失败！！！清算未完成的收购。在尝试获取所需的新资源时，我们未能成功超过允许的最大尝试获取次数（30）。上次获取尝试异常：org.postgresql.util.PSQLException：错误提示。在org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl（ConnectionFactoryImpl.java:152）在org.postgresql.core.ConnectionFactory.openConnection（ConnectionFactory.java:66）在org.postgresql.jdbc2.AbstractJdbc2Connection。（AbstractJdbc2Connection.java： 125）在org.postgresql.jdbc3.AbstractJdbc3Connection。（AbstractJdbc3Connection.java:30）在org.postgresql.jdbc3g.AbstractJdbc3gConnection。（AbstractJdbc3gConnection.java:22）在org.postgresql.jdbc4.AbstractJdbc4Connection。（Abstract：Jdbc4Connection。在org.postgresql.Driver.make（Driver.java:393）在org.postgresql.Driver.connect（Driver.java:267）在org.postgresql.jdbc4.Jdbc4Connection。（Jdbc4Connection.java:24）在com.mchange .v2.c3p0.DriverManagerDataSource.getConnection（DriverManagerDataSource.java:119）位于com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection（WrapperConnectionPoolDataSource.java:143）位于com.mchange.v2.c3p0.WrapperConnectionPooledSource（getr ource.java:132），位于com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool $ 1PooledConnectionResourcePoolManager.acquireResource（C3P0PooledConnectionPool.java:137）com.mchange.v2.resourcepool.BasicResourcePool.doAcquire（Basic） .mchange.v2.resourcepool.BasicResourcePool.access $ 800（BasicResourcePool.java:32）位于com.mchange.v2.resourcepool.BasicResourcePool $ AcquireTask.run（BasicResourcePool.java:1810）位于com.mchange.v2.async.ThreadPoolAsynchronousRunner PoolThread.run（ThreadPoolAsynchronousRunner.java:547）原因：javax.net.ssl.SSLHandshakeException：PKIX路径构建失败：sun.security.provider.certpath.SunCertPathBuilderException：无法在java.base /上找到到所请求目标的有效证书路径。 java.base / sun.security.ssl.TransportContext.fatal（TransportContext.java:321）处的sun.security.ssl.Alert.createSSLException（Alert.java:128）在java.base / sun.security.ssl.TransportContext中。 fatal（TransportContext.java:264）在java.base / sun.security.ssl.TransportCo ntext.fatal（TransportContext.java:259）在java.base / sun.security.ssl.CertificateMessage $ T12CertificateConsumer.checkServerCerts（CertificateMessage.java:642）在java.base / sun.security.ssl.CertificateMessage $ T12CertificateConsumer.onCertificate（在java.base / sun.security.ssl.CertificateMessage $ T12CertificateConsumer.consume（CertificateMessage.java:361）处的CertificateMessage.java:461）在java.base / sun.security.ssl.SSLHandshake.consume（SSLHandshake.java:392）中在java.base / sun.security.ssl.HandshakeContext.dispatch（HandshakeContext.java:444）在java.base / sun.security.ssl.HandshakeContext.dispatch（HandshakeContext.java:421）在java.base / sun.security .ssl.TransportContext.dispatch（TransportContext.java:178）（位于java.base / sun.security.ssl.SSLTransport.decode（SSLTransport.java:164）位于java.base / sun.security.ssl.SSLSocketImpl.decode（SSLSocketImpl .java：1152），位于java.base / sun.security.ssl.SSLSocketImpl.readHandshakeRecord（SSLSocketImpl.java:1063），位于java.base / sun.security.ssl.SSLSocketImpl.startHandshake （SSLSocketImpl.java:402）在java.base / sun.security.ssl.SSLSocketImpl.ensureNegotiated（SSLSocketImpl.java:716）在java.base / sun.security.ssl.SSLSocketImpl $ AppOutputStream.write（SSLSocketImpl.java:970 ）的org.postgresql.core.PGStream.flush（）的java.base / java.io.BufferedOutputStream.flush（BufferedOutputStream.java:142）的java.base / java.io.BufferedOutputStream.flushBuffer（BufferedOutputStream.java:81） org.postgresql.core.v3上的PGStream.java:523).ConnectionFactoryImpl.sendStartupPacket(ConnectionFactoryImpl.java:259）在org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl（ConnectionFactoryImpl.java:105） ...另外16个引起原因：sun.security.validator.ValidatorException：PKIX路径构建失败：sun.security.provider.certpath.SunCertPathBuilderException：无法在java.base / sun.security.validator.PKIXValidator.doBuild上找到到所请求目标的有效证书路径。 java.base / sun.security.validator.PKIXValidator.engineValidate（PKIXValidator.java:290）的java.base / sun.security.validator.Validator.validate（Validator.java:264）的PKIXValidator.java:385） java.base / sun.security.ssl的.base / sun.security.ssl.X509TrustManagerImpl.validate（X509TrustManagerImpl.java:321）java.base / sun.security.ssl的.base / sun.security.ssl.X509TrustManagerImpl.validate（X509TrustManagerImpl.java:321） .X509TrustManagerImpl.checkServerTrusted（X509TrustManagerImpl.java:129）at java.base / sun.security.ssl.CertificateMessage $ T12CertificateConsumer.checkServerCerts（CertificateMessage.java:626） ...更多33 引起原因：sun.security.provider.certpath.SunCertPathBuilderException：无法在java.base /上的java.base / sun.security.provider.certpath.SunCertPathBuilder.build（SunCertPathBuilder.java:141）处找到到请求目标的有效证书路径。位于java.base / java.security.cert.CertPathBuilder.build（CertPathBuilder.java:297）的sun.security.provider.certpath.SunCertPathBuilder.engineBuild（SunCertPathBuilder.java:126）在java.base / sun.security.validator处。 PKIXValidator.doBuild（PKIXValidator.java:380）...还有39个

修复

如果您遇到相同的问题，请将代码更改为此：

comboPooledDataSource.setJdbcUrl("jdbc:postgresql://url:port/database");

Properties props = new Properties();
props.setProperty("sslmode", "require");
props.setProperty("ssl", "true");
props.setProperty("sslfactory", "org.postgresql.ssl.NonValidatingFactory");
props.setProperty("user", "username");
props.setProperty("password", "xxxxxxx");
comboPooledDataSource.setProperties(props);

Answer 1

代替props.setProperty("ssl", "false");试试：

props.setProperty("sslmode", "disable");

有关更多信息，请参见Connecting to Relational Databases on Heroku with Java上的Heroku文档。

c3p0和Heroku postgres，SSL问题

1 个答案: