java.sql.SQLException: com.informix.asf.IfxASFException: Invalid ASF API input parameters.

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java.sql.SQLException: com.informix.asf.IfxASFException: Invalid ASF API input parameters.
at com.informix.jdbc.IfxSqliConnect.<init>(IfxSqliConnect.java:950)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.informix.jdbc.IfxDriver.connect(IfxDriver.java:243)
at java.sql.DriverManager.getConnection(DriverManager.java:571)
at java.sql.DriverManager.getConnection(DriverManager.java:233)
at InformixProbeJava.main(InformixProbeJava.java:54)
java.sql.SQLException: com.informix.asf.IfxASFException: Invalid ASF API input parameters.
at com.informix.jdbc.IfxSqliConnect.<init>(IfxSqliConnect.java:950)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.informix.jdbc.IfxDriver.connect(IfxDriver.java:243)
at java.sql.DriverManager.getConnection(DriverManager.java:571)
at java.sql.DriverManager.getConnection(DriverManager.java:233)
at InformixProbeJava.main(InformixProbeJava.java:54)
java.lang.NullPointerException

at InformixProbeJava.main(InformixProbeJava.java:71)

原因：

连接不上数据库，请检查用户名和密码，连接串

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