Question

我在jsp文件中有这些。但是这些值在mysql表中没有更新。可能是它没有提交。我该如何解决这个问题？

String passc1 = request.getParameter("passc1");
String accid = request.getParameter("accid");
int i = 0;

String sql =
        " update customertb "
        + " set passwd = ?"
        + " where acc_no = ?;";

try {
   PreparedStatement ps = con.prepareStatement(sql);
    ps.setString(1, passc1);
    ps.setString(2, accid);

    i = ps.executeUpdate();
} catch (Exception e) {
    // do something with Exception here. Maybe just throw it up again
} finally {
    con.close();

}

堆栈跟踪

Apr 01,2012 11:29:02 PM org.apache.catalina.core.StandardWrapperValve invoke 严重：servlet [jsp]的Servlet.service（）在上下文中与path []引发异常[在第81行处理JSP页面/changepwd_done.jsp时发生异常

      e.printStackTrace();
 } finally {
     //con.close();
     con.commit();
 }

Stacktrace：]有根本原因 java.sql.SQLException：当autocommit = true时，不能调用commit 在com.mysql.jdbc.SQLError.createSQLException（SQLError.java:936）在com.mysql.jdbc.SQLError.createSQLException（SQLError.java:933）在com.mysql.jdbc.ConnectionImpl.commit（ConnectionImpl.java:1635）在org.apache.jsp.changepwd_005fdone_jsp._jspService（changepwd_005fdone_jsp.java:160）在org.apache.jasper.runtime.HttpJspBase.service（HttpJspBase.java:70）在javax.servlet.http.HttpServlet.service（HttpServlet.java:722）在org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:433）在org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:389）在org.apache.jasper.servlet.JspServlet.service（JspServlet.java:333）在javax.servlet.http.HttpServlet.service（HttpServlet.java:722）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:304）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:210） at or or or or or or or or or or or or or or or or or 在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:243）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:210）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:224）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:169）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:472）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:168） at org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:100）在org.apache.catalina.valves.AccessLogValve.invoke（AccessLogValve.java:929）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:118）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:405）在org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:964） at org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:515） at org.apache.tomcat.util.net.JIoEndpoint $ SocketProcessor.run（JIoEndpoint.java:304） at java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1110） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:603）在java.lang.Thread.run（Thread.java:722）

Answer 1

捕获SQLException并检查控制台消息：

[...]

try {
    PreparedStatement ps = con.prepareStatement(sql);
    ps.setString(1, passc1);
    ps.setString(2, accid);
    i = ps.executeUpdate();
} catch (SQLException e) {
    e.printStackTrace();
}

从jsp更新MySQL表

1 个答案: