java - 我的电脑和lnux服务器JDK JRE 版本都一样，为什么在服务上报版本错误？

Question

我的电脑和lnux服务器JDK JRE 版本都一样，都是1.7.0——71，为什么本地运行正常而在服务上报版本错误？

message boilerWeChat/servlet/WxServlet : Unsupported major.minor version 52.0 (unable to load class boilerWeChat.servlet.WxServlet)

description The server encountered an internal error that prevented it from fulfilling this request.

exception

java.lang.UnsupportedClassVersionError: boilerWeChat/servlet/WxServlet : Unsupported major.minor version 52.0 (unable to load class boilerWeChat.servlet.WxServlet)
    org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2961)
    org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1210)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1690)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.57 logs.

LINUX:

我的电脑：

Answer 1

52는 java8입니다
아마도 환경 변수는 7일 수 있지만 IDE에서 사용되는 실제 변수는 8입니다

Answer 2

maven 또는 gradle

과 같은 프로젝트 구성 도구를 고려하는 것이 좋습니다.

Answer 3

JDK에서 JRE를 구성하고 있나요? JRE는 두 가지가 있습니다