用Testng运行多个class，结果报：
org.testng.TestNGException:
Cannot find class in classpath: Salesman at org.testng.xml.XmlClass.loadClass(XmlClass.java:81) at org.testng.xml.XmlClass.init(XmlClass.java:73) at org.testng.xml.XmlClass.<init>(XmlClass.java:59) at org.testng.xml.TestNGContentHandler.startElement(TestNGContentHandler.java:543) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501) at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179) at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.emptyElement(XMLDTDValidator.java:788) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1343) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2756) at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:647) at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522) at javax.xml.parsers.SAXParser.parse(SAXParser.java:395) at javax.xml.parsers.SAXParser.parse(SAXParser.java:198) at org.testng.xml.SuiteXmlParser.parse(SuiteXmlParser.java:17) at org.testng.xml.SuiteXmlParser.parse(SuiteXmlParser.java:10) at org.testng.xml.Parser.parse(Parser.java:172) at org.testng.TestNG.initializeSuitesAndJarFile(TestNG.java:311) at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:88) at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204) at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)当然在网上找解决方法是一个实践和理论结合的过程，网上列举的方法：设置testng环境变量，设置完成后运行还是报错，分析保存内容：Cannot find class in classpath，我一开始以为是找不到编译后的class文件，于是在xml文件中添加了class文件所在路径，还是运行失败。
正确原因Java文件路径不正确
原来xml文件：
<classes>
<class name="Salesman" /> </classes>其实我的Salesman文件的上一层是function文件夹，再上一层才是src,文件路径：src->function->Salesman，仔细一检查就会发现路径不正确，于是修改一下xml：
<classes>
<class name="function.Salesman" /> </classes>问题得到解决。