I'm trying to connect with external MySQL database with web application posted on Azure. Code is working perfectly fine on Tomcat hosted on Localhost, but on Azure all functions requiring connection return with error:
Exception: java.net.SocketException: Permission denied: connect Message: ; nested exception is: java.net.SocketException: Permission denied: connect
Connection function code is:
private static String hostName = "sql11.freesqldatabase.com";
private static String dbName = "xxxx";
private static String user = "xxxx";
private static String password = "xxxx";
private static String portNumber = "xxxx";
private Connection connect() {
String url ="jdbc:mysql://"+hostName+":"+portNumber+"/"+dbName+"?user="+user+"&password="+password;
Connection conn = null;
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
}
try {
conn = DriverManager.getConnection(url);
} catch (SQLException e) {
System.out.println(e.getMessage());
e.printStackTrace();
}
return conn;
}
I tired to reproduce your issue but failed.
Here , I tried to create a java spring-boot
project to test connection with Azure MySQL Database
.
Snippet of my code:
private static String hostName = "<your host name>";
private static String dbName = "sys";
private static String user = "<user name>";
private static String password = "password";
private static String portNumber = "3306";
@RequestMapping("/hello")
public String index() throws SQLException {
Connection conn = null;
try {
Class.forName("com.mysql.cj.jdbc.Driver");
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
}
try {
String url = "jdbc:mysql://"+hostName+":"+portNumber+"/"+dbName+"?verifyServerCertificate=true&useSSL=true&requireSSL=false&serverTimezone=UTC";
conn = DriverManager.getConnection(url, user, password);
} catch (SQLException e) {
System.out.println("error!!!!");
System.out.println(e.getMessage());
e.printStackTrace();
return e.getMessage();
}
return conn.getCatalog();
}
My web.config file:
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<handlers>
<add name="httpPlatformHandler" path="*" verb="*" modules="httpPlatformHandler" resourceType="Unspecified" />
</handlers>
<httpPlatform processPath="%JAVA_HOME%\bin\java.exe"
arguments="-Djava.net.preferIPv4Stack=true -Dserver.port=%HTTP_PLATFORM_PORT% -jar "%HOME%\site\wwwroot\demo-0.0.1-SNAPSHOT.jar"">
</httpPlatform>
</system.webServer>
</configuration>
You could check points as below if you can not connect to your database:
1.Don't miss set SSL parameters.
2.Please set white IP address
of your azure web app.
3.Don't miss -Djava.net.preferIPv4Stack=true
setting in your web.config
.
You could find more details from this thread: JavaMail API to iMail -- java.net.SocketException: Permission denied: connect
Hope it helps you.
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