java - 配置tomcat免安装版，无法启动 返回错误码4

Question

jdk是前两年就装了的，所以今天直接装了tomcat，然后在“计算机管理>服务和应用程序>服务”弹出下面提示：

我查了别问出现跟我类似的问题但是他们是错误类型跟我不一样，新手不知道如何解决，求大佬帮忙。
java版本：

$ java -version
java 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)

以下是启动日志
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 initialized
java.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.accessrrreee0(URLClassLoader.java:58)
    at java.net.URLClassLoader.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" 

Answer 1

Unsupported major.minor version 52.0

不支持这个版本

Tomcat9 文档写道：

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。

Answer 2

装个新版的JDK吧