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                        /使用java構建和維護接口自動化測試框架

環境搭建失敗，發送post的時候報以下錯誤，截取了前邊的一些錯誤日志，老師幫忙看一下，是什么原因。

Sun Jul 09 21:16:41 CST 2017

HTTP/1.1 500 Internal Server Error

<html><head><title>Apache Tomcat/7.0.75 - Error report</title><style></style> </head><body><h1>HTTP Status 500 - org.hibernate.exception.GenericJDBCException: Cannot open connection</h1><HR size="1" noshade="no shade"><p><b>type</b> Exception report</p><p><b>message</b> <u>org.hibernate.exception.GenericJDBCException: Cannot open connection</u></p><p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p><p><b>exception</b> <pre>javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: Cannot open connection

org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614)

org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:202)

com.imooc.DAO.StudentDAO.findStudent(StudentDAO.java:27)

com.imooc.DAO.StudentDAO.find(StudentDAO.java:69)

com.imooc.service.StudentService.doPost(StudentService.java:69)

javax.servlet.http.HttpServlet.service(HttpServlet.java:650)

javax.servlet.http.HttpServlet.service(HttpServlet.java:731)