問題描述

jdk是前兩年就裝了的，所以今天直接裝了tomcat，然后在“計算機管理>服務和應用程序>服務”彈出下面提示：我查了別問出現跟我類似的問題但是他們是錯誤類型跟我不一樣，新手不知道如何解決，求大佬幫忙。java版本：

$ java -versionjava version '1.6.0_38'Java(TM) SE Runtime Environment (build 1.6.0_38-b05)Java HotSpot(TM) Client VM (build 20.13-b02, mixed mode)

以下是啟動日志commons-daemon.log：

[2017-06-09 00:08:46] [info] [ 9900] Commons Daemon procrun (1.0.15.0 32-bit) started[2017-06-09 00:08:46] [info] [ 9900] Service Tomcat9 name Apache Tomcat 9.0 Tomcat9[2017-06-09 00:08:49] [info] [ 9900] Service ’Tomcat9’ installed[2017-06-09 00:08:49] [info] [ 9900] Commons Daemon procrun finished[2017-06-09 00:10:01] [info] [ 7308] Commons Daemon procrun (1.0.15.0 32-bit) started[2017-06-09 00:10:02] [info] [ 7308] Running ’Tomcat9’ Service...[2017-06-09 00:10:02] [info] [ 6148] Starting service...[2017-06-09 00:10:03] [error] [ 7920] FindClass org/apache/catalina/startup/Bootstrap failed[2017-06-09 00:10:03] [error] [ 6148] Failed to start Java[2017-06-09 00:10:03] [error] [ 6148] ServiceStart returned 4[2017-06-09 00:10:03] [info] [ 7308] Run service finished.[2017-06-09 00:10:04] [info] [ 7308] Commons Daemon procrun finished

tomcat9-stderr.log：

2017-06-09 00:37:41 Commons Daemon procrun stderr initializedjava.lang.UnsupportedClassVersionError: org/apache/catalina/startup/Bootstrap : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247)Exception in thread 'main'

問題解答

Unsupported major.minor version 52.0

不支持這個版本

Tomcat9 文檔寫道：

The installer uses the registry to determine the base path of a Java 7 or later JRE, including the JRE installed as part of the full JDK

Java7 以上。

裝個新版的JDK吧