Jquery Mobile - Ajax调用从MySql数据库获取数据返回错误

Question

Jquery Mobile - Ajax调用从MySql数据库中的Json数据中获取数据返回错误。

这是我的代码

服务器代码

java.lang.IllegalStateException: Failed to transform class with name com.my.company.Util. Reason: cannot find org.apache.commons.httpclient.protocol.ProtocolSocketFactory
    at org.powermock.core.classloader.MockClassLoader.loadMockClass(MockClassLoader.java:266)
    at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:180)
    at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:68)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
Caused by: javassist.CannotCompileException: cannot find org.apache.commons.httpclient.protocol.ProtocolSocketFactory
    at javassist.expr.NewExpr.replace(NewExpr.java:215)
    at org.powermock.core.transformers.impl.MainMockTransformer$PowerMockExpressionEditor.edit(MainMockTransformer.java:418)
    at javassist.expr.ExprEditor.loopBody(ExprEditor.java:212)
    at javassist.expr.ExprEditor.doit(ExprEditor.java:91)
    at javassist.CtClassType.instrument(CtClassType.java:1431)
    at org.powermock.core.transformers.impl.MainMockTransformer.transform(MainMockTransformer.java:74)
    at org.powermock.core.classloader.MockClassLoader.loadMockClass(MockClassLoader.java:251)
    ... 55 more
Caused by: javassist.NotFoundException: org.apache.commons.httpclient.protocol.ProtocolSocketFactory
    at javassist.ClassPool.get(ClassPool.java:450)
    at javassist.bytecode.Descriptor.toCtClass(Descriptor.java:592)
    at javassist.bytecode.Descriptor.getParameterTypes(Descriptor.java:439)
    at javassist.expr.NewExpr.replace(NewExpr.java:188)
    ... 61 more

我的ajax电话

<?php

try{

header('Content-type: application/json');

$server = "myurl";
$username = "username";
$password = "password";
$database = "mydb";
$con = mysqli_connect($server, $username, $password, $database) or die       ("Could not connect: " . mysql_error());
/*mysql_select_db($database, $con);

$result = mysql_query($sql) or die ("Query error: " . mysql_error());
$records = array();
*/
$sql = "SELECT id, l_name AS name, l_lat AS value1, l_long AS value2 FROM     landmarks ORDER BY l_name";
$result= mysqli_query($con, $sql);
$records = array();

while($row = mysqli_fetch_assoc($result)) {
$records[] = $row;
}
mysqli_close($con);
echo json_encode($records); 



} 
catch(Throwable $e) {
$trace = $e->getTrace();
echo $e->getMessage().' in '.$e->getFile().' on line '.$e->getLine().' called from '.$trace[0]['file'].' on line '.$trace[0]['line'];
}





?>

这里ajax正在返回错误函数。

但是在浏览器中运行服务器代码时，json数据会正确显示。

控制台中没有记录任何内容。请帮助找出问题所在。