I am currently learning more about implementing JDBC and using databases in a Spring Boot webapp, and I encountered the following Stack Trace written in the bottom of the post.
I have created a simple Employee model, and I am trying to execute some database code on the same class which my main() lies in. The model and the main class are the only two java files existing in this whole project. I am trying to implement the following run() code that overrides the one from the interface, CommandLineRunner, but I do not get the logs that should come after log.info("Part A:"):
log.info("Part A:")
employees.forEach(employee -> {log.info(employee.toString());
log.info("part a");});
--Things I noticed:
I noticed that the last line of the log before the stack trace starts comes from: "Thread-1" instead of "main". I think that means that a thread from somewhere other than the main encountered an error and closed connection before when it should close normally.
Also, I think that because HikariPool closed before "peer's close_notify", which I presume that it refers to the normal closure of HikariPool, I am not able to see the final bit of logging that I have kept trying to procure. The final bit of logging that I want to see is the logging of the employee that has become inserted into my database.
The final bit of logging that I want to see should be procured from this line of code:
employees.forEach(employee -> {log.info(employee.toString());
log.info("part a");});
--Things to note:
Because of this line in the log, I thought I would see the employee inserted into my database, but when I queried directly on MySQL Command Line Client, it returned an empty set:
2018-11-03 21:08:35.362 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : rows affected: 1
I don't understand why a row has been affected when nothing has been inserted into the database.
The stacktrace and logs: (The stacktrace pasted below actually repeats itself several more times but I cut it off for brevity.)
2018-11-03 21:08:32.997 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : Starting JdbcTest1Application on KitKat with PID 2408 (C:\Users\Nano\Downloads\jdbc-test1\jdbc-test1\target\classes started by Nano in C:\Users\Nano\Downloads\jdbc-test1\jdbc-test1)
2018-11-03 21:08:33.003 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : No active profile set, falling back to default profiles: default
2018-11-03 21:08:33.770 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : Started JdbcTest1Application in 1.024 seconds (JVM running for 1.778)
2018-11-03 21:08:33.770 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : Creating tables
2018-11-03 21:08:33.770 INFO 2408 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2018-11-03 21:08:34.082 INFO 2408 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2018-11-03 21:08:35.135 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : Inserting Baggins Hopkins
2018-11-03 21:08:35.362 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : rows affected: 1
2018-11-03 21:08:35.362 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : Querying for employee
2018-11-03 21:08:36.065 INFO 2408 --- [ main] c.j.jdbctest1.JdbcTest1Application : Part A:
2018-11-03 21:08:36.065 INFO 2408 --- [ Thread-1] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
Sat Nov 03 21:08:36 KST 2018 WARN: Caught while disconnecting...
EXCEPTION STACK TRACE:
** BEGIN NESTED EXCEPTION **
javax.net.ssl.SSLException
MESSAGE: closing inbound before receiving peer's close_notify
STACKTRACE:
javax.net.ssl.SSLException: closing inbound before receiving peer's close_notify
at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:129)
at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:117)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:308)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:264)
at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:255)
at java.base/sun.security.ssl.SSLSocketImpl.shutdownInput(SSLSocketImpl.java:645)
at java.base/sun.security.ssl.SSLSocketImpl.shutdownInput(SSLSocketImpl.java:624)
at com.mysql.cj.protocol.a.NativeProtocol.quit(NativeProtocol.java:1312)
at com.mysql.cj.NativeSession.quit(NativeSession.java:182)
at com.mysql.cj.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:1750)
at com.mysql.cj.jdbc.ConnectionImpl.close(ConnectionImpl.java:720)
at com.zaxxer.hikari.pool.PoolBase.quietlyCloseConnection(PoolBase.java:135)
at com.zaxxer.hikari.pool.HikariPool.lambda$closeConnection$1(HikariPool.java:441)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
** END NESTED EXCEPTION **
The Java Code:
#SpringBootApplication
public class JdbcTest1Application implements CommandLineRunner {
private static final Logger log = LoggerFactory.getLogger(JdbcTest1Application.class);
#Autowired
JdbcTemplate jdbcTemplate;
public static void main(String[] args) {
SpringApplication.run(JdbcTest1Application.class, args);
}
#Override
public void run(String... args) throws Exception {
log.info("Creating tables");
jdbcTemplate.execute("DROP TABLE IF EXISTS employees");
jdbcTemplate.execute("CREATE TABLE employees (emp_id int, name varchar(100), role varchar(100), status varchar(100))");
log.info("Inserting Baggins Hopkins");
int rowsAffected = jdbcTemplate.update("INSERT INTO EMPLOYEE(EMP_ID, NAME, ROLE, STATUS)"
+ " VALUES(1,'Baggins Hopkins','thief','WORKING')");
log.info("rows affected: "+ Integer.toString(rowsAffected));
log.info("Querying for employee");
String sql = "SELECT emp_id,name,role,status FROM employees";
List<Employee> employees = jdbcTemplate.query(sql,(rs, rowNum)->
new Employee(rs.getInt("emp_id"), rs.getString("name"),
rs.getString("role"),Status.valueOf(rs.getString("status"))));
log.info("Part A:");
employees.forEach(employee -> {log.info(employee.toString());
log.info("part a");});
}
}
Also just in case this matters, I pasted this code from application.properties:
spring.datasource.url=jdbc:mysql://localhost:3306/employee_database
spring.datasource.username=employee
spring.datasource.password=employee
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
The SSL connection to the database is failing, try changing your datasource URL to:
spring.datasource.url=jdbc:mysql://localhost:3306/employee_database?useSSL=false
The warning looks like a MySQL driver bug with Java 11 and SSL enabled : https://bugs.mysql.com/bug.php?id=93590
Deactivating encryption because of a driver warning is a bad idea.
Your insertion problem looks more like a classic transaction issue though, I doubt it is related to the SSL warning.
This Worked for me
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
<version>8.0.20</version>
</dependency>
I also faced the same issue.
if you look the the stacktrace, it's cleary mentioned what to do -
Sat Mar 16 09:00:01 IST 2019 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'.
You need either to explicitly disable SSL by setting **useSSL=false**, or set **useSSL=true** and provide truststore for server certificate verification.
so after disabling the ssl by making changes in data source url solved the problem -
spring.datasource.url=jdbc:mysql://localhost:3306/security?useSSL=false
To solve this problem, it took me about three days.
(Edit: This is a workaround for testing and not actually a solution.)
At first, I started solving the problem from trying to configure my own SSL for mysql, and I spent quite a few hours on that. Too much time had passed until I realized configuring it had to do with Cmake and C++, which made me give up. It was very frustrating. However I did not give up and tried to disable SSL entirely through a method that hasn't been found. And I eventually did find the method. Here it is:
You have to use the legacy password for MySQL. The legacy password is the way MySQL authenticated things in version 5.7x.
Open up the MySQL installer again, and reconfigure the MySQL Server settings.
When you get there you will see this screen:
The screen that you should get to
You might get some errors when reaching the final stage of the reconfiguration:
I had problems at the final stage I had no idea how to fix so I uninstalled MySQL altogether. I use windows. I deleted the MySQL project root directory from Program Files to uninstall MySQL. I also deleted the databases saved in Program Data (a hidden folder in the C Drive) because I wanted to start afresh(WARNING: this will delete all your previously saved data!). Uninstalling MySQL from the control panel might not be enough to completely erase MySQL from your computer.
Delete all *.pem files in C:\ProgramData\MySQL\MySQL Server 8.0\Data. (or move it somewhere else, which is what I did)
You might not see ProgramData in the C Drive. That is because it is a hidden folder. In order to see hidden folders:
search for folder options in the control panel.
Go to view.
Under 'Advanced settings' and under 'Hidden files and folders' of that, click "Show hidden files, folders, and drives."
Go to C:\ProgramData\MySQL\MySQL Server 8.0 and open my.cnf (or my.ini). Add the following line after [mysqld]:
ssl=0
Then save. It should work now.
References:
https://community.atlassian.com/t5/Confluence-questions/MySQL-Public-Key-Retrieval-is-not-allowed/qaq-p/778956
https://scalegrid.io/blog/configuring-and-managing-ssl-on-your-mysql-server/
My similar problem in a tomcat trying to conect via ssl to Aurora mysql (AWS)
I solved the problem by updating the driver version from 'mysql-connector-java-5.1.40.jar' to 'mysql-connector-java-5.1.49.jar', and installing a root CA into ceacerts:
keytool -import -trustcacerts -file rds-ca-2019-root.pem -keystore /<your_java_home>/lib/security/cacerts
Hope be use to you
Try using the following URL. As they suggested use useSSL=false Also, Make sure to use <&> instead of just & when you have multiple properties defined in your URL.
jdbc:mysql://localhost:3306/TestDB?serverTimezone=PST&useSSL=false
I was also facing the same issue
But then i updated the mysql-connector-java version from 5.1.46 to 8.0.20 and by changing com.mysql.jdbc.Driver to com.mysql.cj.jdbc.Driver
it solved my issue
My similary prolem is in spark,
I solove the problem by down the java verion from
'openjdk version "1.8.0_275"' to 'openjdk version "1.8.0_265"',
hope be use to you
I had this issue and decided to use Carrier Pigeon Protocol's solution until I accidentally solved it by updating Tomcat from version 9.0.12 to 9.0.16.
I faced a similar issue when I upgraded the Java version in my server to 11 from 8.
The spring boot started supporting Java 11 from 2.1 and onwards. So make sure your project's dependencies are also updated accordingly. This is relevant for this answer as SpringBoot also influence MySQL connector, Hibernate core, and other dependencies.
The inability to connect to DB was resulting in some more NoClassDefFoundErrors. So make sure you solve this first before looking into other errors.
An example pom dependency for the SpringBoot starter
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.12.RELEASE</version>
<relativePath />
</parent>
Hope this helps someone.
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: name-unit] Unable to build Hibernate SessionFactory
I had exactly the same problem, I also modified a false my useSSL like this useSSL=false and it works fine.
I think for those who use intelliJ ultimate the error the problem does not arise. But for those who use the community version "yes" also for those who are on netbeans like my case. This concerns the management of persistence.xml files and the EntityManagerHolder file
Rather than disabling SSL/TLS I appended the following to the database connection string: &enabledTLSProtocols=TLSv1.2
When setting up Sonarqube v7.1 with external MySQL database , I get the following error:
2018.06.04 19:11:27 WARN web[][o.s.s.p.DatabaseServerCompatibility] Database must be upgraded. Please backup database and browse /setup
2018.06.04 19:11:27 WARN app[][startup]
Database must be upgraded.Please backup database and browse /setup
2018.06.04 19:11:27 INFO web[][o.s.s.p.ServerPluginRepository] Deploy plugin Dependency-Check / 1.1.0 / fe3b031e72cf8026980aa916d4a8de32cac1dabc
2018.06.04 19:11:27 INFO web[][o.s.s.p.Platform] Database needs migration
2018.06.04 19:11:27 INFO web[][o.s.s.p.w.MasterServletFilter] Initializing servlet filter org.sonar.server.ws.WebServiceFilter#7439197 [pattern=UrlPattern{inclusions=[/api/system/migrate_db.*, ...], exclusions=[/api/properties*, ...]}]
2018.06.04 19:11:27 INFO web[][o.s.s.a.EmbeddedTomcat] HTTP connector enabled on port 9000
Any pointers how to solve this. Thanks
This is not an error, you have to open a browser and go to $SONARQUBE_URL/setup and validate the form to start the database upgrade.
I am trying to perform an sqoop export on HDP sandbox 2.1 via Oozie. When I run the Oozie job I get the following java runtime exception.
'>>> Invoking Sqoop command line now >>>
7598 [main] WARN org.apache.sqoop.tool.SqoopTool - $SQOOP_CONF_DIR
has not been set in the environment. Cannot check for additional
configuration.
7714 [main] INFO org.apache.sqoop.Sqoop - Running Sqoop version:
1.4.4.2.1.1.0-385
7760 [main] WARN org.apache.sqoop.SqoopOptions - Character argument
'\t' has multiple characters; only the first will be used.
7791 [main] WARN org.apache.sqoop.ConnFactory - $SQOOP_CONF_DIR has
not been set in the environment. Cannot check for additional
configuration.
7904 [main] INFO org.apache.sqoop.manager.MySQLManager - Preparing
to use a MySQL streaming resultset.
7905 [main] INFO org.apache.sqoop.tool.CodeGenTool - Beginning code
generation
7946 [main] ERROR org.apache.sqoop.Sqoop - Got exception running
Sqoop: java.lang.RuntimeException: Could not load db driver class:
com.mysql.jdbc.Driver Intercepting System.exit(1)
I have copied jdbc driver file "mysql-connector-java.jar" to Oozie's shared library folder which I believe is "/usr/lib/oozie/share/lib/sqoop/". I have restarted my sandbox and tried to perform the export with Oozie again and I still get the same error.
The export works perfectly fine when I try performing it only via sqoop, so I presume Oozie needs its own set of drivers.
My question is, which Oozie directory am I suppose to copy my jdbc drivers to?
If you guys think I'm doing something wrong or you need further information, please let me know.
Thank you for your time.
Normally for Oozie the sharelib directory is /user/oozie/share/lib/ on HDFS where "oozie" would be the name of the user which is used to start the Oozie Server. I don't know what that is in case of HDP sandbox 2.1 , but you can use ps command to figure that out.
And for jars needed for sqoop action, I think you should copy the jar to /user/oozie/share/lib/sqoop/ folder.
I just downloaded databene benerator version 0.8.1 and i'm using it on windows 7 starter. i need it to produce some test data for an application i'm developing, but it seems benerator is not working. I did set up the BENERATOR_HOME variable properly, but when i run benerator -version it prints the version details then throws an exception. this is the output on my console
C:\Users\Obby> benerator -version
Local classpath: .;D:\databene-benerator-0.8.1\bin;D:\databene-benerator-0.8.1\lib\*
12:56:16,874 INFO (main) [CONFIG] Running file -version
12:56:16,890 INFO (main) [CONFIG] Benerator 0.8.1 build 2335
12:56:16,890 INFO (main) [CONFIG] Java version 1.7.0_17
12:56:16,890 INFO (main) [CONFIG] JVM Java HotSpot(TM) Client VM 23.7-b01 (Oracle
Corporation)
12:56:16,905 INFO (main) [CONFIG] OS Windows 7 6.1 (x86)
12:56:16,905 INFO (main) [CONFIG] Installed JSR 223 Script Engines:
12:56:16,983 INFO (main) [CONFIG] - Mozilla Rhino[js, rhino, JavaScript,
javascript, ECMAScript, ecmascript]
12:56:16,983 INFO (main) [CONFIG] Max heap size: 247 MB
12:56:17,420 DEBUG (main) [CONFIG] Initializing Script mapping from file org/databene
/script/script.properties
Exception in thread "main" org.databene.commons.ConfigurationError: Error parsing
-version
at org.databene.commons.xml.XMLUtil.parse(XMLUtil.java:245)
at org.databene.commons.xml.XMLUtil.parse(XMLUtil.java:235)
at
org.databene.benerator.engine.DescriptorRunner.parseDescriptorFile
(DescriptorRunner.java:113)
at
org.databene.benerator.engine.DescriptorRunner.runWithoutShutdownHook
(DescriptorRunner.java:109)
at org.databene.benerator.engine.DescriptorRunner.run(DescriptorRunner.java:102)
at org.databene.benerator.main.Benerator.runFile(Benerator.java:99)
at org.databene.benerator.main.Benerator.runFromCommandLine(Benerator.java:82)
at org.databene.benerator.main.Benerator.main(Benerator.java:75)
Caused by: org.databene.commons.ConfigurationError: Resource not found: -version
at org.databene.commons.IOUtil.getResourceAsStream(IOUtil.java:584)
at org.databene.commons.IOUtil.getFileOrResourceAsStream(IOUtil.java:565)
at org.databene.commons.IOUtil.getInputStreamForURI(IOUtil.java:214)
at org.databene.commons.IOUtil.getInputStreamForURI(IOUtil.java:198)
at org.databene.commons.xml.XMLUtil.parse(XMLUtil.java:242)
... 7 more
C:\Users\Obby>
benerator environment variable is set up, i can get it properly on the console
C:\Users\Obby> echo %BENERATOR_HOME%
D:\databene-benerator-0.8.1
Try using two dashes before the argument 'version'. One dash is conventionally used for single letter arguments.
I'm having the hardest time getting Eclipse to connect and reverse engineer from a MySQL5 database. I can see Eclipse connecting to my MySQL database and can even see the tables through the "Data Source Explorer" view but when I try it after creating Hibernate Console and Configuration files, I get the error:
org.hibernate.console.HibernateConsoleRuntimeException:
Problems while loading database
driverclass (com.mysql.jdbc.Driver)
Problems while loading database
driverclass (com.mysql.jdbc.Driver)
java.lang.ClassNotFoundException:com.mysql.jdbc.Driver
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
From my simple java project, I start by creating a Hibernate Configuration File (cfg.xml).
Name of file: hibernate.cfg.xml
Session Factory name: org.hibernate.SessionFactory
Database Dialect: org.hibernate.dialect.MySQL5Dialect
Driver Class: com.mysql.jdbc.Driver
Connection Url: jdbc:mysql://localhost:3306/<myDatabaseName>
Default Schema: <myDatabaseName>
Username: correct username
Password: correct password
I also have selected the option to "Create a console Configuration"
At this point, I can see the new configuration listed in my "Hibernate Configuration" perspective/workbench pane. If I try to expand it, I get the earlier listed error.
I don't understand why I can see the database through the 'Data Source Explorer" and even though I'm using the DB connection profile listed in there as part of my configuration, I still get this error.
I also tried to create a new database profile using a manual mysql connector jar (mysql-connector-java-5.1.13-bin.jar) and same end result.
Versions of what I have:
Eclipse version: 3.6.0 aka Helios, Build 20100617 - 1415
MySQL: 5.1.34
Hibernate Tools (from JBoss): HibernateTools-3.3.1.v201006011046R-H111-GA
(placed into Eclipse's 'dropins' folder)
What am I doing wrong in my hibernate configuration setup?
Help!
Your Hibernate Console Configuration doesn't have the MySQL JDBC driver on its classpath, hence the java.lang.ClassNotFoundException:com.mysql.jdbc.Driver. From the reference guide of the Hibernate Tools:
3.4. Creating a Hibernate Console Configuration
...
alt text http://docs.jboss.org/tools/2.1.0.Beta1/hibernatetools/html_single/images/plugins/plugins_3.png
...
Classpath: The classpath for loading POJO and JDBC drivers; only needed if
the default classpath of the Project
does not contain the required classes.
Do not add Hibernate core libraries or
dependencies, they are already
included. If you get ClassNotFound
errors then check this list for
possible missing or redundant
directories/jars.
Include default classpath from project: When enabled the project
classpath will be appended to the
classpath specified above
Does the "associated project" have the MySQL JDBC driver declared as library? If not, then you must add it (either as a project library or in the above tab).