如何修复 javax.net.ssl.SSLException

Question

我正在尝试使用 Java 中的 MySQL Workbench 连接到数据库。连接应该在两台计算机之间。没有数据库的主机有这个字符串来建立连接："jdbc:mysql://192.168.43.26:3306/DATABASEE?user=admin&password=toor" 192.168.43.26为服务器实际IP； DATABASEE 是数据库的名称。

public static int CheckLogin(String Username, String Psw) throws InterruptedException {
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        // Create a variable for the connection string.
        String connectionUrl = "jdbc:mysql://192.168.43.26:3306/DATABASEE?user=admin&password=toor";

        try {Connection con = DriverManager.getConnection(connectionUrl); Statement stmt = con.createStatement();
            ResultSet sr = stmt.executeQuery("select * from Users;");
            while(sr.next()) {
                String S = sr.getString("Username");
                String S2 = sr.getString("Psw");
                if(S.equals(Username) && S2.contentEquals(Psw)) {
                    con.close();
                    return 0;
                }
            }
            con.close();
        }
        // Handle any errors that may have occurred.
        catch (SQLException e) {
            e.printStackTrace();
        }
        return 1;
    }

执行以下代码后，Eclipse 出现以下错误：

    Fri Oct 18 18:01:40 CEST 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.
    Fri Oct 18 18:01:41 CEST 2019 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.jdbc.MysqlIO.quit(MysqlIO.java:2246)
            at com.mysql.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:4236)
            at com.mysql.jdbc.ConnectionImpl.close(ConnectionImpl.java:1462)
            at Ciao.OpenSQL.CheckLogin(OpenSQL.java:132)
            at Ciao.MasterStart.actionPerformed(MasterStart.java:160)
            at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
            at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2308)
            at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
            at 

java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
        at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
        at java.desktop/java.awt.Component.processMouseEvent(Component.java:6632)
        at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
        at java.desktop/java.awt.Component.processEvent(Component.java:6397)
        at java.desktop/java.awt.Container.processEvent(Container.java:2263)
        at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5008)
        at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
        at java.desktop/java.awt.Component.dispatchEvent(Component.java:4840)
        at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
        at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
        at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
        at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
        at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2772)
        at java.desktop/java.awt.Component.dispatchEvent(Component.java:4840)
        at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
        at java.desktop/java.awt.EventQueue.run(EventQueue.java:721)
        at java.desktop/java.awt.EventQueue.run(EventQueue.java:715)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
        at java.desktop/java.awt.EventQueue.run(EventQueue.java:745)
        at java.desktop/java.awt.EventQueue.run(EventQueue.java:743)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
        at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
        at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
        at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
        at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
        at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)


** END NESTED EXCEPTION **

Answer 1

即使我使用 where 子句而不是获取整个 table.

，我也遇到了同样的错误

将 useSSL=false 添加到我的数据库 url 解决了问题：

Connection con = DriverManager.getConnetion("jdbc:mysql://127.0.0.1:3306/abc?useSSL=false","username","password");

如何修复 javax.net.ssl.SSLException

How to fix javax.net.ssl.SSLException

java

mysql

database-connection