创建新的数据库连接时出错

Question

我正在尝试在 iReport 5.6.0 中添加新的数据库 JDBC 连接。我正在使用 Microsoft SQL Server 2014 - 12.0.4213.0。我在 ireport 工具的类路径中添加了 mysql-connector-java-5.1.38-bin.jar 。

为连接详情截图。

当我测试连接时，它给我错误消息消息：

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
Last packet sent to the server was 0 ms ago.
Level:
SEVERE
Stack Trace:
Communications link failure Last packet sent to the server was 0 ms ago.
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
java.lang.reflect.Constructor.newInstance(Unknown Source)
com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
java.lang.reflect.Constructor.newInstance(Unknown Source)
com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
com.jaspersoft.ireport.designer.connection.JDBCConnection.getConnection(JDBCConnection.java:140)
com.jaspersoft.ireport.designer.connection.JDBCConnection.test(JDBCConnection.java:449)
com.jaspersoft.ireport.designer.connection.gui.ConnectionDialog.jButtonTestActionPerformed(ConnectionDialog.java:335)
com.jaspersoft.ireport.designer.connection.gui.ConnectionDialog.access0(ConnectionDialog.java:43)
com.jaspersoft.ireport.designer.connection.gui.ConnectionDialog.actionPerformed(ConnectionDialog.java:290)

Answer 1

在屏幕截图中，似乎您正在使用 MySql 而 而不是 sql 服务器 提到。

只需选择 Jar、向导设置和数据库供应商的正确组合。

创建新的数据库连接时出错

Error while creating new Database Connection

ireport