Apache Tomcat主页未来

Question

我在客户机（Windows 7系统32位）上安装了Apache服务器（Tomcat 7.63)，客户机中使用的Java版本是(JDK 1.8更新60）

问题

通过运行文件(...\bin\tomcat7.exe)启动Tomcat服务器。但当我试图打开主页(http://localhost:8080/)时,浏览器上没有显示该主页,我可以在Apache日志中看到以下异常：

org.apache.coyote.AbstractProtocol$AbstractConnectionHandler process
SEVERE: Error reading request, ignored
java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at sun.nio.cs.AbstractCharsetProvider.lookup(Unknown Source)
at sun.nio.cs.AbstractCharsetProvider.access$000(Unknown Source)
at sun.nio.cs.AbstractCharsetProvider$1.next(Unknown Source)
at sun.nio.cs.AbstractCharsetProvider$1.next(Unknown Source)
at java.nio.charset.Charset.put(Unknown Source)
at java.nio.charset.Charset.access$200(Unknown Source)
at java.nio.charset.Charset$3.run(Unknown Source)
at java.nio.charset.Charset$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.nio.charset.Charset.availableCharsets(Unknown Source)
at org.apache.tomcat.util.buf.B2CConverter.<clinit>(B2CConverter.java:51
)
at org.apache.tomcat.util.buf.ByteChunk.<clinit>(ByteChunk.java:102)
at org.apache.tomcat.util.buf.MessageBytes.<init>(MessageBytes.java:58)
at org.apache.tomcat.util.buf.MessageBytes.<init>(MessageBytes.java:36)
at org.apache.tomcat.util.buf.MessageBytes$MessageBytesFactory.newInstan
ce(MessageBytes.java:685)
at org.apache.tomcat.util.buf.MessageBytes.newInstance(MessageBytes.java
:78)
at org.apache.coyote.Request.<init>(Request.java:83)
at org.apache.coyote.AbstractProcessor.<init>(AbstractProcessor.java:61)

at org.apache.coyote.http11.AbstractHttp11Processor.<init>(AbstractHttp1
1Processor.java:273)
at org.apache.coyote.http11.Http11Processor.<init>(Http11Processor.java:
56)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.creat
eProcessor(Http11Protocol.java:165)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.creat
eProcessor(Http11Protocol.java:103)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(
AbstractProtocol.java:586)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoin
t.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskTh
read.java:61)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at sun.nio.cs.CharsetMapping.load(Unknown Source)
at sun.nio.cs.CharsetMapping$1.run(Unknown Source)
at sun.nio.cs.CharsetMapping$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.cs.CharsetMapping.get(Unknown Source)
at sun.nio.cs.ext.SJIS_0213$1.run(Unknown Source)
at sun.nio.cs.ext.SJIS_0213$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.nio.cs.ext.SJIS_0213.<clinit>(Unknown Source)
... 30 more

Exception in thread "http-bio-8085-exec-1" java.lang.NullPointerException
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(
AbstractProtocol.java:731)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoin
t.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskTh
read.java:61)
at java.lang.Thread.run(Unknown Source)

对于我来说，真正奇怪的是，如果我从服务管理控制台从administrator帐户启动Apache server:Administrative Tools->Services，它运行得很好，并且我可以看到主页（http：//localhost:8080/)出现在浏览器上。

问题

如果我们使用.exe文件(...\bin\tomcat7.exe)运行Apache服务器，为什么Apache主页不会出现？如果服务器开始使用Windows服务，为什么会出现主页？在这两种情况下，执行相同的.exe文件来运行服务器，这两种情况有什么区别？

Answer 1

不能直接使用exe启动Tomcat（除非提供了正确的参数），如果要这样做，应使用包含的.bat文件之一:startup.bat

只需确保定义环境变量，如java_home和/或jre_home