Spring5-IOC容器-Bean管理-XML注入方式-出现com.atguigu.spring5.collectiontype.Course@6279ee乱码

这是因为在对应的Bean类文件没有添加toString方法：

D:jdkjdkbinjava.exe -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:IntelliJ IDEA 2019.1.3libidea_rt.jar=7734:D:IntelliJ IDEA 2019.1.3bin" -Dfile.encoding=UTF-8 -classpath "D:IntelliJ IDEA 2019.1.3libidea_rt.jar;D:IntelliJ IDEA 2019.1.3pluginsjunitlibjunit-rt.jar;D:IntelliJ IDEA 2019.1.3pluginsjunitlibjunit5-rt.jar;D:jdkjdkjrelibcharsets.jar;D:jdkjdkjrelibdeploy.jar;D:jdkjdkjrelibextaccess-bridge-32.jar;D:jdkjdkjrelibextcldrdata.jar;D:jdkjdkjrelibextdnsns.jar;D:jdkjdkjrelibextjaccess.jar;D:jdkjdkjrelibextjfxrt.jar;D:jdkjdkjrelibextlocaledata.jar;D:jdkjdkjrelibextnashorn.jar;D:jdkjdkjrelibextsunec.jar;D:jdkjdkjrelibextsunjce_provider.jar;D:jdkjdkjrelibextsunmscapi.jar;D:jdkjdkjrelibextsunpkcs11.jar;D:jdkjdkjrelibextzipfs.jar;D:jdkjdkjrelibjavaws.jar;D:jdkjdkjrelibjce.jar;D:jdkjdkjrelibjfr.jar;D:jdkjdkjrelibjfxswt.jar;D:jdkjdkjrelibjsse.jar;D:jdkjdkjrelibmanagement-agent.jar;D:jdkjdkjrelibplugin.jar;D:jdkjdkjrelibresources.jar;D:jdkjdkjrelibrt.jar;D:workspace_IDEAAlumniDirectoryoutproductionspring5_demo1;D:workspace_IDEAAlumniDirectoryspring5_demo1libcommons-logging-1.1.1.jar;D:workspace_IDEAAlumniDirectoryspring5_demo1libspring-beans-5.2.6.RELEASE.jar;D:workspace_IDEAAlumniDirectoryspring5_demo1libspring-context-5.2.6.RELEASE.jar;D:workspace_IDEAAlumniDirectoryspring5_demo1libspring-core-5.2.6.RELEASE.jar;D:workspace_IDEAAlumniDirectoryspring5_demo1libspring-expression-5.2.6.RELEASE.jar;C:Users34709.m2repositoryjunitjunit4.12junit-4.12.jar;C:Users34709.m2repositoryorghamcresthamcrest-core1.3hamcrest-core-1.3.jar" com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 com.atguigu.spring5.testdemo.TestSpring5Demo1,testCollection
[java课程, 数据库课程]
[张三, 李四]
{JAVA=java, PHP=php}
[MySQL, Redis]
[com.atguigu.spring5.collectiontype.Course@6279ee, com.atguigu.spring5.collectiontype.Course@5997b1]

Process finished with exit code 0

生成如下代码：
右键：

    @Override
    public String toString() {
        return "Course{" +
                "cname='" + cname + ''' +
                '}';
    }