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Grails GPARS升级(Grails GPARS upgrade)

 我正在使用Grails 1.4.0.M1，我正在尝试升级gpars的版本以与我的应用程序一起使用。 
 

 所以我加入了BuildConfig.groovy： 
 

dependencies{
    build 'org.codehaus.gpars:gpars:0.11'
}

 

 但是，当我使用run-app时，这会带来以下异常： 
 

Exception in thread "Thread-4" java.lang.ClassCastException: groovyx.gpars.ThreadLocalPools cannot be cast to groovy.lang.GroovyObject
  at org.codehaus.groovy.runtime.callsite.PogoGetPropertySite.getProperty(PogoGetPropertySite.java:47)
  at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:231)
  at groovyx.gpars.Parallelizer.retrieveCurrentPool(Parallelizer.groovy:62)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

 

 我怀疑它可能与旧版本中使用此lib的grails框架相关联，并且版本不兼容。 
 

 任何想法我怎么能解决这个问题？ 
 

 谢谢。 

I am using Grails 1.4.0.M1 and I am trying to upgrade the version of gpars to use with my app.
 

So I added in BuildConfig.groovy:
 

dependencies{
    build 'org.codehaus.gpars:gpars:0.11'
}

 

This however brings me the following exception when I use run-app:
 

Exception in thread "Thread-4" java.lang.ClassCastException: groovyx.gpars.ThreadLocalPools cannot be cast to groovy.lang.GroovyObject
  at org.codehaus.groovy.runtime.callsite.PogoGetPropertySite.getProperty(PogoGetPropertySite.java:47)
  at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:231)
  at groovyx.gpars.Parallelizer.retrieveCurrentPool(Parallelizer.groovy:62)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

 

I suspect it could be linked to the grails framework using this lib in an older version and the versions being incompatible.
 

Any idea how I could overcome this issue?
 

Thanks.

原文：https://stackoverflow.com/questions/7055571
更新时间：2023-10-06 13:10

最满意答案

 如果您使用的是编程语言，则可以简化SQL： 
 

"SELECT username, id, Days FROM Users ORDER BY Days DESC";

 

 然后使用编程语言处理行号： 
 

if ($result->num_rows > 0) {
$rowNumber=0;
echo "<table><tr><th>ID</th><th>Name</th><th>Days</th></tr>";
// output data of each row
while($row = $result->fetch_assoc()) {
    $rowNumber++;
    echo "<tr><td>" . $rowNumber "</td><td>" . $row["username"]. "</td><td>" . $row["Days"]. "</td></tr>";
}
echo "</table>";
} else {
echo "0 results";
}


If you are using a programming language, you can keep your SQL simple:
 

"SELECT username, id, Days FROM Users ORDER BY Days DESC";

 

Then process the row number using the programming language:
 

if ($result->num_rows > 0) {
$rowNumber=0;
echo "<table><tr><th>ID</th><th>Name</th><th>Days</th></tr>";
// output data of each row
while($row = $result->fetch_assoc()) {
    $rowNumber++;
    echo "<tr><td>" . $rowNumber "</td><td>" . $row["username"]. "</td><td>" . $row["Days"]. "</td></tr>";
}
echo "</table>";
} else {
echo "0 results";
}

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