我想在 build 文件中实现运行测试程序，并输出 html 形式的报告，现在总报一个 java.lang.ClassNotFoundException: com.ktplay.testing.KTAllTestSuite 的错，但我程序中是有这个类的
错误 log 如下：

E:\ktplay-android-sdk\sdk\ktplay_testing\ktplay_testing>ant -buildfile build3.xml report
Buildfile: E:\ktplay-android-sdk\sdk\ktplay_testing\ktplay_testing\build3.xml

cleanReport:
   [delete] Deleting directory E:\ktplay-android-sdk\sdk\ktplay_testing\ktplay_testing\report

test:
    [mkdir] Created dir: E:\ktplay-android-sdk\sdk\ktplay_testing\ktplay_testing\report
    [junit] Running com.ktplay.testing.KTAllTestSuite
    [junit] Testsuite: com.ktplay.testing.KTAllTestSuite
    [junit] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0 sec
    [junit] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0 sec
    [junit]
    [junit]     Caused an ERROR
    [junit] com.ktplay.testing.KTAllTestSuite
    [junit] java.lang.ClassNotFoundException: com.ktplay.testing.KTAllTestSuite
    [junit]     at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
    [junit]     at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    [junit]     at java.security.AccessController.doPrivileged(Native Method)
    [junit]     at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    [junit]     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    [junit]     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    [junit]     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    [junit]     at java.lang.Class.forName0(Native Method)
    [junit]     at java.lang.Class.forName(Class.java:259)
    [junit]
    [junit] Test com.ktplay.testing.KTAllTestSuite FAILED

report:
    [mkdir] Created dir: E:\ktplay-android-sdk\sdk\ktplay_testing\ktplay_testing\report\html
[junitreport] Processing E:\ktplay-android-sdk\sdk\ktplay_testing\ktplay_testing\report\TESTS-TestSuites.xml to C:\Users\KTplay\AppData\Local\Temp\null1510513641
[junitreport] Loading stylesheet jar:file:/D:/ant/apache-ant-1.9.4/lib/ant-junit.jar!/org/apache/tools/ant/taskdefs/optional/junit/xsl/junit-frames.xsl
[junitreport] Transform time: 285ms
[junitreport] Deleting: C:\Users\KTplay\AppData\Local\Temp\null1510513641

BUILD SUCCESSFUL
Total time: 1 second

E:\ktplay-android-sdk\sdk\ktplay_testing\ktplay_testing>

cmd 执行错误图片

我的 build3.xml 如下：

<target name="test" depends="cleanReport">
        <mkdir dir="report" />
        <junit printsummary="yes" haltonerror="no" haltonfailure="no" fork="yes">
            <formatter type="plain" usefile="false" />
            <formatter type="xml" />
            <test name="com.ktplay.testing.KTAllTestSuite" todir="report" />
            <classpath refid="JUnit 4.libraryclasspath" />
        </junit>
    </target>

    <target name="report" depends="test">
        <mkdir dir="report/html" />
        <junitreport todir="report">
            <fileset dir="report">
                <include name="TEST-*.xml" />
            </fileset>
            <report todir="report/html" />
        </junitreport>
    </target>

<test name="com.ktplay.testing.KTAllTestSuite" todir="report" />

KTAllTestSuite 类如下

package com.ktplay.testing;

import junit.framework.Test;
import junit.framework.TestSuite;

import com.ktplay.testing.accountmanager.KTAccountManagerTestSuite;
import com.ktplay.testing.friendship.KTFriendshipTestSuite;
import com.ktplay.testing.leaderboard.KTLeaderboardTestSuite;
import com.ktplay.testing.login.KTLoginTest;

public class KTAllTestSuite 
{
    public static Test suite()
    {
        TestSuite suite = new TestSuite();

        suite.addTestSuite(KTLoginTest.class);
        suite.addTest(KTAccountManagerTestSuite.suite());
        suite.addTest(KTLeaderboardTestSuite.suite());
        suite.addTest(KTFriendshipTestSuite.suite());
        return suite;
    }


}

代码结构如下图：

求大神帮忙看一下是什么问题

下图是最终生成的报告效果，如果正常运行，应该就是我要的效果了