JTOpen - JDTrace produces No Such Method Error

["Jessica King" <jking@xxxxxxxxxxxxxx>]

I am new to AS/400 development with Java, but have found JTOpen to be
incredibly useful. I'm currently developing a web application and would like
to persist the AS400 object in the user's session for re-use. In subsequent
pages, I'm using the following code to retrieve this object and create a
usable connection with it. 

AS400 system = conn.getAS400();
Properties p = new Properties();
p.put("naming", "SQL");

//AS400JDBCDriver d = new AS400JDBCDriver();
AS400JDBCDataSource d = new AS400JDBCDataSource(system);
Connection c = d.getConnection();
Statement s = c.createStatement();

This all seems like it should work well, but I am receiving the following
error message when I execute the servlet: 

javax.servlet.ServletException:
java.sql.DriverManager.getLogWriter()Ljava/io/PrintWriter;
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:286)
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:16
2)

root cause 

java.lang.NoSuchMethodError:
java.sql.DriverManager.getLogWriter()Ljava/io/PrintWriter;
com.ibm.as400.access.JDTrace.isTraceOn(JDTrace.java:123)
com.ibm.as400.access.JDProperties.setString(JDProperties.java:1563)
com.ibm.as400.access.JDProperties.(JDProperties.java:1132)
com.ibm.as400.access.AS400JDBCDataSource.(AS400JDBCDataSource.java:190)
com.ibm.as400.access.AS400JDBCDataSource.(AS400JDBCDataSource.java:227)
com.phelon.CCS.DataAccess.SiteDA.getAllSites(SiteDA.java:41)
com.phelon.CCS.ProblemDomain.NewComplaint.writeComplaintForm(NewComplaint.ja
va:118)
com.phelon.CCS.ProblemDomain.NewComplaint.processRequest(NewComplaint.java:9
1)
com.phelon.CCS.ProblemDomain.NewComplaint.doGet(NewComplaint.java:203)
javax.servlet.http.HttpServlet.service(HttpServlet.java:748)
javax.servlet.http.HttpServlet.service(HttpServlet.java:861)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java:25)
java.lang.reflect.Method.invoke(Method.java:324)
org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:246)
java.security.AccessController.doPrivileged(Native Method)
javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:268)
org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:16
2)

I'm using JTOpen 4.5 (tried 4.4 as well), Java version 1.4.2_05-b04. Any
help is greatly appreciated! I basically need a *working* means of
persisting an AS400 object for each user (AS400 security purposes and to
reuse it with subsequent servlets). 

 

Thanks so much,

Jessica King

Client/Server Programmer

MPS, LLC.

 

 

 

 


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