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[英]Access denied when trying to connect to mysql database via eclipse, java
[英]Azure - permission denied when trying to connect to external MySQL database
我正在尝试使用Azure上发布的Web应用程序连接外部MySQL数据库。 代码在Localhost上托管的Tomcat上运行良好,但在Azure上所有需要连接的函数均返回错误:
Exception: java.net.SocketException: Permission denied: connect Message: ; nested exception is: java.net.SocketException: Permission denied: connect
连接功能代码为:
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;
}
我很想重现您的问题,但失败了。
在这里,我试图创建一个java spring-boot
项目来测试与Azure MySQL Database
连接。
我的代码段:
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();
}
我的web.config文件:
<?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>
如果无法连接到数据库,则可以检查以下几点:
1.不要错过设置的SSL参数。
2.请设置您的Azure Web应用程序的白色IP address
。
3.不要错过web.config
-Djava.net.preferIPv4Stack=true
设置。
您可以从以下线程中找到更多详细信息: JavaMail API到iMail-java.net.SocketException:权限被拒绝:connect
希望对您有帮助。
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