Hibernate多对多数据插入时 stackoverflow Error

来源：互联网发布：阿里云连接管理终端编辑：程序博客网时间：2024/06/07 00:33

在多对多关系的维护中，插入一条数据。学生和课程多对多关系中，由学生来维护关联表，现在学生新选一门课，需要在学生的Bean中的courses属性中加入一个课程，在这个过程中报StackOverFlowError。分析原因是没有重写Course的Hashcode和equals方法导致的。特此记录一下。

Set<Course>    courses

org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.StackOverflowError
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:982) ~[spring-webmvc-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) ~[spring-webmvc-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) ~[undertow-servlet-1.4.18.Final.jar:1.4.18.Final]
at io.undertow.servlet.handlers.FilterHandlerFilterChainImpl.doFilter(FilterHandler.java:129) [undertow−servlet−1.4.18.Final.jar:1.4.18.Final]atorg.springframework.boot.web.filter.ApplicationContextHeaderFilter.doFilterInternal(ApplicationContextHeaderFilter.java:55) [spring−boot−1.5.6.RELEASE.jar:1.5.6.RELEASE]atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring−web−4.3.10.RELEASE.jar:4.3.10.RELEASE]atio.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow−servlet−1.4.18.Final.jar:1.4.18.Final]atio.undertow.servlet.handlers.FilterHandlerFilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-1.4.18.Final.jar:1.4.18.Final]
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:110) ~[spring-boot-actuator-1.5.6.RELEASE.jar:1.5.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-1.4.18.Final.jar:1.4.18.Final]
at io.undertow.servlet.handlers.FilterHandlerFilterChainImpl.doFilter(FilterHandler.java:131) [undertow−servlet−1.4.18.Final.jar:1.4.18.Final]atorg.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) [spring−web−4.3.10.RELEASE.jar:4.3.10.RELEASE]atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring−web−4.3.10.RELEASE.jar:4.3.10.RELEASE]atio.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow−servlet−1.4.18.Final.jar:1.4.18.Final]atio.undertow.servlet.handlers.FilterHandlerFilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-1.4.18.Final.jar:1.4.18.Final]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-1.4.18.Final.jar:1.4.18.Final]
at io.undertow.servlet.handlers.FilterHandlerFilterChainImpl.doFilter(FilterHandler.java:131) [undertow−servlet−1.4.18.Final.jar:1.4.18.Final]atorg.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) [spring−web−4.3.10.RELEASE.jar:4.3.10.RELEASE]atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring−web−4.3.10.RELEASE.jar:4.3.10.RELEASE]atio.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow−servlet−1.4.18.Final.jar:1.4.18.Final]atio.undertow.servlet.handlers.FilterHandlerFilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-1.4.18.Final.jar:1.4.18.Final]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) ~[undertow-servlet-1.4.18.Final.jar:1.4.18.Final]
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) ~[undertow-servlet-1.4.18.Final.jar:1.4.18.Final]

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