SqlServer ：Invalid call Statement method: {0}

今天编写了一个分页，在调试中出现了如下的错误:
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Invalid call Statement method: {0}
 at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
 at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
 at com.microsoft.jdbc.base.BasePreparedStatement.executeQuery(Unknown Source)
 at com.wmsz.pub.PagerHelp.initialize(PagerHelp.java:37)
 at com.wmsz.business.UsersDaoImpl.findAllUsers(UsersDaoImpl.java:62)
 at com.wmsz.business.UsersServiceImpl.findAllUsers(UsersServiceImpl.java:67)
 at com.wmsz.servlet.FindAllUserServlet.doPost(FindAllUserServlet.java:51)
 at com.wmsz.servlet.FindAllUserServlet.doGet(FindAllUserServlet.java:19)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:114)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:91)
 at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:103)
 at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:181)
 at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:266)
 at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:269)
 at com.caucho.server.port.TcpConnection.run(TcpConnection.java:603)
 at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:721)
 at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:643)
 at java.lang.Thread.run(Thread.java:619)
[13:46:17.609] {http--8080-4} java.lang.NullPointerException
[13:46:17.609] {http--8080-4}  at com.wmsz.pub.PagerHelp.getPage(PagerHelp.java:73)
[13:46:17.609] {http--8080-4}  at com.wmsz.business.UsersDaoImpl.findAllUsers(UsersDaoImpl.java:67)
[13:46:17.609] {http--8080-4}  at com.wmsz.business.UsersServiceImpl.findAllUsers(UsersServiceImpl.java:67)
[13:46:17.609] {http--8080-4}  at com.wmsz.servlet.FindAllUserServlet.doPost(FindAllU