无法创建 PoolableConnectionFactory [JSP Servlet 和 MySQL]

问题描述 投票：0回答：2

我遇到以下错误：

java.sql.SQLException: Cannot create PoolableConnectionFactory (Cannot open file:C:\AppServers\glassfish5\glassfish\domains\domain1/config/keystore.jks [Keystore was tampered with, or password was incorrect])

只需在 MySQL 数据库连接上添加 

useSSL=false
和 DBConnection 类中的 
JDBC_URL
字符串即可解决此问题。

数据库连接

package data;

import java.sql.*;
import javax.sql.DataSource;
import org.apache.commons.dbcp2.BasicDataSource;

public class DBConnection {
    
    private static final String JDBC_URL = "jdbc:mysql://localhost:3306/course_management_system?zeroDateTimeBehavior=CONVERT_TO_NULL&useTimezone=true&serverTimezone=UTC";
    private static final String JDBC_USER = "root";
    private static final String JDBC_PASSWORD = "admin";

    private static BasicDataSource dataSource;

    public static DataSource getDataSource() {
        if (dataSource == null) {
            dataSource = new BasicDataSource();
            dataSource.setUrl(JDBC_URL);
            dataSource.setUsername(JDBC_USER);
            dataSource.setPassword(JDBC_PASSWORD);
            dataSource.setInitialSize(50);
            try {
                Class.forName("com.mysql.cj.jdbc.Driver");
            } catch (ClassNotFoundException ex) {
                ex.printStackTrace(System.out);
            }
        }
        return dataSource;
    }

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

    public static void close(ResultSet rs) {
        try {
            rs.close();
        } catch (SQLException ex) {
            ex.printStackTrace(System.out);
        }
    }

    public static void close(PreparedStatement stmt) {
        try {
            stmt.close();
        } catch (SQLException ex) {
            ex.printStackTrace(System.out);
        }
    }

    public static void close(Connection conn) {
        try {
            conn.close();
        } catch (SQLException ex) {
            ex.printStackTrace(System.out);
        }
    }
}

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>mb</groupId>
    <artifactId>CourseManagementSystem</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>
    <name>CourseManagementSystem</name>
    
    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <failOnMissingWebXml>false</failOnMissingWebXml>
        <jakartaee>8.0</jakartaee>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>${jakartaee}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.22</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-dbcp2</artifactId>
            <version>2.8.0</version>
        </dependency>
    </dependencies>
    
     <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <compilerArguments>
                        <endorseddirs>${endorsed.dir}</endorseddirs>
                    </compilerArguments>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.6</version>
                <executions>
                    <execution>
                        <phase>validate</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${endorsed.dir}</outputDirectory>
                            <silent>true</silent>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>javax</groupId>
                                    <artifactId>javaee-api</artifactId>
                                    <version>${jakartaee}</version>
                                    <type>jar</type>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

错误

CourseManagementSystem was successfully deployed in 316 milliseconds.|#]
  java.sql.SQLException: Cannot create PoolableConnectionFactory (Cannot open file:C:\AppServers\glassfish5\glassfish\domains\domain1/config/keystore.jks [Keystore was tampered with, or password was incorrect])
    at org.apache.commons.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:656)
    at org.apache.commons.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:534)
    at org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:734)
    at data.DBConnection.getConnection(DBConnection.java:35)
    at data.UserDAO.list(UserDAO.java:30)
    at web.UserController.doGet(UserController.java:18)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:645)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:750)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1540)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:119)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:611)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:550)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:114)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:332)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:199)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:463)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:168)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:242)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:539)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:593)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:573)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.sql.SQLNonTransientConnectionException: Cannot open file:C:\AppServers\glassfish5\glassfish\domains\domain1/config/keystore.jks [Keystore was tampered with, or password was incorrect]
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110)
    at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:70)
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:833)
    at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:453)
    at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:246)
    at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
    at org.apache.commons.dbcp2.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:52)
    at org.apache.commons.dbcp2.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:357)
    at org.apache.commons.dbcp2.BasicDataSource.validateConnectionFactory(BasicDataSource.java:103)
    at org.apache.commons.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:652)
    ... 35 more
Caused by: com.mysql.cj.exceptions.SSLParamsException: Cannot open file:C:\AppServers\glassfish5\glassfish\domains\domain1/config/keystore.jks [Keystore was tampered with, or password was incorrect]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
    at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
    at com.mysql.cj.protocol.ExportControlled.getSSLContext(ExportControlled.java:550)
    at com.mysql.cj.protocol.ExportControlled.performTlsHandshake(ExportControlled.java:303)
    at com.mysql.cj.protocol.StandardSocketFactory.performTlsHandshake(StandardSocketFactory.java:188)
    at com.mysql.cj.protocol.a.NativeSocketConnection.performTlsHandshake(NativeSocketConnection.java:97)
    at com.mysql.cj.protocol.a.NativeProtocol.negotiateSSLConnection(NativeProtocol.java:333)
    at com.mysql.cj.protocol.a.NativeAuthenticationProvider.connect(NativeAuthenticationProvider.java:167)
    at com.mysql.cj.protocol.a.NativeProtocol.connect(NativeProtocol.java:1350)
    at com.mysql.cj.NativeSession.connect(NativeSession.java:157)
    at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:953)
    at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:823)
    ... 42 more
Caused by: java.io.IOException: Keystore was tampered with, or password was incorrect
    at sun.security.provider.JavaKeyStore.engineLoad(JavaKeyStore.java:782)
    at sun.security.provider.JavaKeyStore$JKS.engineLoad(JavaKeyStore.java:56)
    at sun.security.provider.KeyStoreDelegator.engineLoad(KeyStoreDelegator.java:224)
    at sun.security.provider.JavaKeyStore$DualFormatJKS.engineLoad(JavaKeyStore.java:70)
    at java.security.KeyStore.load(KeyStore.java:1445)
    at com.mysql.cj.protocol.ExportControlled.getSSLContext(ExportControlled.java:530)
    ... 51 more
Caused by: java.security.UnrecoverableKeyException: Password verification failed
    at sun.security.provider.JavaKeyStore.engineLoad(JavaKeyStore.java:780)
    ... 56 more
|#]
  StandardWrapperValve[web.UserController]: Servlet.service() for servlet web.UserController threw exception
java.lang.NullPointerException
    at data.DBConnection.close(DBConnection.java:40)
    at data.UserDAO.list(UserDAO.java:51)
    at web.UserController.doGet(UserController.java:18)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:645)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:750)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1540)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:119)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:611)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:550)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:114)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:332)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:199)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:463)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:168)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:242)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:539)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:593)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:573)
    at java.lang.Thread.run(Thread.java:748)
|#]

解决方案

我解决了将 

useSSL=false
添加到数据库连接字符串的问题。

java mysql jsp servlets glassfish
2个回答
1
投票

您的问题与 NullPointerException 无关。你的异常处理很糟糕，你需要修复它，这样你就不会再次感到困惑。

问题

您的异常处理方案归结为：“将一些信息打印到标准输出然后继续进行”。最后一点是问题所在：您的代码编写时并没有考虑到每行可能只是执行某些操作或什么都不执行，具体取决于异常是否发生。因此，您的代码不断滚动，并且由于事情没有达到您预期的状态，因此会发生更多错误，并且这些错误完全无关 - 它们不是问题，但它们会堵塞日志并使您感到困惑。

处理异常的正确策略是处理它们。 “不管怎样，打印出来然后继续”不是对付他们的方法。如果您无法处理它们（这是常见情况），那么就让异常冒出来。除非您可以编写解决问题的代码，否则不要捕获它。没有什么可以处理的异常应该一路冒泡，卷起线程，这是最好的解决方案，也是最少的代码，所以这是双赢。

明确旨在与数据库交互的方法应该声明为

throws SQLException
，并且您的
public static void main
方法应该声明为
throws Exception
，这是允许的。

如果你必须以某种方式捕获一个已检查的异常，即使你不知道该怎么做（这很糟糕），那么至少 put; 

throw new RuntimeException("Unhandled", e);
在你的 catch 块中，而不是 `e.printStackTrace(System.out)。

您实际的异常问题

您的 mysql 驱动程序正在尝试加载损坏的密钥库。这是一个相当棘手的问题。

很可能您已经添加了一个配置（或者正在应用默认配置），该配置需要位于以下位置的密钥库文件 

C:\AppServers\glassfish5\glassfish\domains\domain1/config/keystore.jks
- 我不认为问题是斜杠的混合（java通常可以很好地理解这一点），但我敢打赌该文件不存在。或者，您试图做到这一点，但发生了异常，并且同样令人遗憾的异常处理导致您没有意识到密钥文件已损坏。检查该文件 - 它可能根本不存在，或者为 0 字节。 （重新）生成它，或修复配置。

0
投票

我通过在数据库 URL 中添加 

useSSL=false
解决了该问题。

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