blocks|key|1006977|text|如果您有这个侦听器：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1006978|++++<Listener+className="org.apache.catalina.core.AprLifecycleListener"+SSLEngine="on"/>|code-block|syntax|javascript|1006979|在您的server.xml上，删除它并尝试。如果使用APR连接器，则不能使用keystore。|1006980|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you have this listener:

<pre><code> &lt;Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on"/&gt;
</code></pre>

on your server.xml, remove it and try.
You can not use a keystore if you are using the APR connector

blocks|key|1007005|text|如果缓存的cookie太多，它就会破坏服务器(请求头的大小太大了！)清除cookie也可以解决这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1007006|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If there are too many cookies cached, it breaks the server (the size of a request header is too big!). Clearing the cookies can fix this issue as well.

blocks|key|1007064|text|我有一个类似的问题，我发送一个POST请求(使用RESTClient插件的火狐)与数据在请求体，并收到相同的消息。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1007065|在我的例子中，之所以发生这种情况，是因为我试图在未配置HTTPS的本地tomcat实例中使用HTTPS协议。|1007066|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I had a similar issue, I was sending a POST request (using RESTClient plugin for Firefox) with data in the request body and was receiving the same message.

In my case this happened because I was trying to use HTTPS protocol in a local tomcat instance where HTTPS was not configured.

blocks|key|79868|text|对我来说，问题是传入一个比通常预期的更大的HTTP报头。我通过在maxHttpHeaderSize=中的Connector节点上设置server.xml“1048576”属性来解决这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|79869|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

For me, the problem was passing in a larger than normally expected HTTP header. I resolved it by setting maxHttpHeaderSize="1048576" attribute on the Connector node in server.xml.

blocks|key|1007088|text|我试过以上所有的方法，但对我来说都没有用。然后，我更改了tomcat端口号，包括HTTP/1.1和Tomcat管理端口，并得到了解决。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1007089|我看到上面的其他解决方案对人们有用，但是如果上面的任何一种方法都不起作用的话，尝试一下这个方法是值得的。|1007090|谢谢大家！|1007091|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I tried all of the above, nothing worked for me.
Then I changed tomcat port numbers both HTTP/1.1 and Tomcat admin port and it got solved.

I see other solutions above worked for the people but it is worth to try this one if any of the above doesn't work.

Thanks everyone!

blocks|key|2083759|text|在我们的例子中，错误的发生是因为我们的应用程序中有一个自定义的filter，它对其他url执行HttpServletResponse+sendRedirect()。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2083760|由于某些原因，重定向没有关闭连接的keep-alive状态，因此出现超时异常。|2083761|我们使用Tomcat文档进行检查，当我们通过将maxKeepAliveRequests的值设置为1来禁用它时，错误将停止显示。|2083762|目前，我们还没有解决这个错误的实际解决方案。|2083763|entityMap|0|LINK|mutability|MUTABLE|url|https://tomcat.apache.org/tomcat-7.0-doc/config/http.html^0|V|6|1B|Y|0|H|A|0|N|K|1C|1|4|8|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@$9|16|A|17|1|18]]|E|$]]|$1|J|3|K|5|6|7|19|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S]]]]

In our case it turned out that the error happened because we have a custom <code>filter</code> in our application which does <code>HttpServletResponse sendRedirect()</code> to other url.

For some reason, the redirection is not closing the <code>keep-alive</code> status of the connection, hence the timeout exception.

We checked with <a href="https://tomcat.apache.org/tomcat-7.0-doc/config/http.html" rel="nofollow">Tomcat Docs</a> and when we disabled the <code>maxKeepAliveRequests</code> by setting it's value to <code>1</code> and the error stopped showing up.

For now we do not have the actual solution to the error.

blocks|key|2083821|text|当我试图打开https时，就会出现问题。我不使用SSL。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2083822|我是Tomcat+错误。|2083823|现在12/02/2017+Debian存储库的最新官方版本是Tomcat+8.0.14|2083824|解决方案是从官方网站下载并安装最新的Tomcat+8、8.5、9软件包，或者从jessie后台升级到最新的。|2083825|Debian+8|2083826|添加到/etc/apt/sources.list+.列表|2083827|deb+http://ftp.debian.org/debian+jessie-backports+main|code-block|syntax|javascript|2083828|然后从jessie-backports更新并安装Tomcat。|2083829|sudo+apt-get+update+&&+sudo+apt-get+-t+jessie-backports+install+tomcat8|2083830|entityMap|0|LINK|mutability|MUTABLE|url|https://bz.apache.org/bugzilla/show_bug.cgi?id=60581^0|6|5|0|9|2|0|0|U|D|0|I|E|1H|1|0|0|8|0|0|S|0|0|0|V|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|19|8|@]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|H|3|I|5|6|7|1D|8|@$9|1E|A|1F|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|1G|8|@$9|1H|A|1I|B|C]|$9|1J|A|1K|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|1L|8|@$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|N|3|O|5|6|7|1O|8|@$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|R|7|1R|8|@]|D|@]|E|$S|T]]|$1|U|3|V|5|6|7|1S|8|@$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|W|3|X|5|R|7|1V|8|@]|D|@]|E|$S|T]]|$1|Y|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]]|Z|$10|$5|11|12|13|E|$14|15]]]]

My problem occurs when I try to open https. I don't use SSL.

It's Tomcat <a href="https://bz.apache.org/bugzilla/show_bug.cgi?id=60581" rel="nofollow noreferrer">bug</a>.

Today 12/02/2017 newest official version from Debian repositories is Tomcat 8.0.14

Solution is to download from official site and install newest package of Tomcat 8, 8.5, 9 or upgrade to newest version(8.5.x) from jessie-backports
 
 

<h3>Debian 8</h3>

Add to /etc/apt/sources.list

<pre><code>deb http://ftp.debian.org/debian jessie-backports main
</code></pre>

Then update and install Tomcat from jessie-backports

<pre><code>sudo apt-get update &amp;&amp; sudo apt-get -t jessie-backports install tomcat8
</code></pre>

blocks|key|1007171|text|如果不想升级tomcat，请在catalina.properties中添加这一行|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1007172|tomcat.util.http.parser.HttpParser.requestTargetAllow=%7C{}|code-block|syntax|javascript|1007173|它对我有用，8109.html|1007174|entityMap|0|LINK|mutability|MUTABLE|url|http://www.zhoulujun.cn/zhoulujun/html/java/tomcat/2018_0508_8109.html^0|F|J|0|0|6|9|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

If you don't want to upgrade your tomcat,
Add this line in your <code>catalina.properties</code>

<pre><code>tomcat.util.http.parser.HttpParser.requestTargetAllow=|{}
</code></pre>

It works for me
<a href="http://www.zhoulujun.cn/zhoulujun/html/java/tomcat/2018_0508_8109.html" rel="nofollow noreferrer">http://www.zhoulujun.cn/zhoulujun/html/java/tomcat/2018_0508_8109.html</a>

blocks|key|79923|text|如果您不是意外地请求HTTPS协议而不是HTTP，请检查。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|79924|我忽略了我是在请求https://localhost:...而不是http://localhost:...，这导致了一条奇怪的消息。|offset|length|style|CODE|79925|entityMap^0|0|9|L|X|K|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]|$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|I|$]]

Check, if you are not accidentally requesting HTTPS protocol instead of HTTP.

I have overlooked that I was requesting <code>https://localhost:...</code> instead of <code>http://localhost:...</code> and it resulted to this weird message..

blocks|key|2083891|text|当我在Debian+10中使用Tomcat作为应用服务器时，我遇到了这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2083892|问题是，在我使用http在浏览器中调用应用程序时，应用程序已经将定义为它的默认协议。因此，当我尝试运行应用程序时，我在日志文件中得到了以下错误：|2083893|org.apache.coyote.http11.AbstractHttp11Processor+process
INFO:+Error+parsing+HTTP+request+header
+Note:+further+occurrences+of+HTTP+header+parsing+errors+will+be+logged+at+DEBUG+level.|code-block|syntax|javascript|2083894|不过，我尝试在浏览器中使用https协议，但它没有连接，引发错误：|2083895|，这是我怎么解决的，|2083896|您需要一个证书来为应用程序设置https协议。我首先必须为应用程序创建一个密钥库文件，更像是https协议的自签名证书：|2083897|sudo+keytool+-genkey+-keyalg+RSA+-alias+tomcat+-keystore+/usr/share/tomcat.keystore|2083898|备注：您需要在服务器上安装才能做到这一点。可以使用sudo+apt+install+default-jdk安装Java。|CODE|2083899|接下来，我在Tomcat服务器配置文件()中为应用程序添加了一个https+Tomcat服务器连接器：|2083900|sudo+nano+/opt/tomcat/conf/server.xml|2083901|将以下内容添加到应用程序的配置中。注意，指定了密钥库文件位置和密码。此外，还为https协议定义了一个端口，它不同于http协议的端口：|2083902|<Connector+protocol="org.apache.coyote.http11.Http11Protocol"
+++++++++++port="8443"+maxThreads="200"+scheme="https"
+++++++++++secure="true"+SSLEnabled="true"
+++++++++++keystoreFile="/usr/share/tomcat.keystore"
+++++++++++keystorePass="my-password"
+++++++++++clientAuth="false"+sslProtocol="TLS"
+++++++++++URIEncoding="UTF-8"
+++++++++++compression="force"
+++++++++++compressableMimeType="text/html,text/xml,text/plain,text/javascript,text/css"/>|2083903|因此，应用程序的完整服务器配置在Tomcat服务器配置文件(/opt/tomcat/conf/server.xml)中如下所示：|2083904|<Service+name="my-application">
++<Connector+protocol="org.apache.coyote.http11.Http11Protocol"
+++++++++++++port="8443"+maxThreads="200"+scheme="https"
+++++++++++++secure="true"+SSLEnabled="true"
+++++++++++++keystoreFile="/usr/share/tomcat.keystore"
+++++++++++++keystorePass="my-password"
+++++++++++++clientAuth="false"+sslProtocol="TLS"
+++++++++++++URIEncoding="UTF-8"
+++++++++++++compression="force"
+++++++++++++compressableMimeType="text/html,text/xml,text/plain,text/javascript,text/css"/>

++<Connector+port="8009"+protocol="HTTP/1.1"
+++++++++++++connectionTimeout="20000"
+++++++++++++redirectPort="8443"+/>

++<Engine+name="my-application"+defaultHost="localhost">
+++++<Realm+className="org.apache.catalina.realm.LockOutRealm">
++++++++<Realm+className="org.apache.catalina.realm.UserDatabaseRealm"
+++++++++++++resourceName="UserDatabase"/>
++++</Realm>

++++<Host+name="localhost"++appBase="webapps"
++++++++++unpackWARs="true"+autoDeploy="true">

++++++++<Valve+className="org.apache.catalina.valves.AccessLogValve"+directory="logs"
+++++++++++++prefix="localhost_access_log"+suffix=".txt"
+++++++++++++pattern="%25h+%25l+%25u+%25t+&quot;%25r&quot;+%25s+%25b"+/>

++++</Host>
++</Engine>
</Service>|2083905|这一次，当我尝试使用以下方法从浏览器访问应用程序时：|2083906|https://my-server-ip-address:https-port|2083907|就我而言，它是：|2083908|https:35.123.45.6:8443|2083909|效果很好。虽然，我不得不接受一个警告，这增加了一个网站的安全例外，因为使用的证书是自签名的。|2083910|就这样。|2083911|我希望这对有帮助|2083912|entityMap^0|3|9|F|6|0|8|4|0|0|D|5|0|0|A|0|F|5|11|3|1A|5|0|0|0|2|P|S|0|K|C|0|0|N|3|13|5|1M|4|0|0|G|6|U|R|0|0|0|0|0|0|0|0|0|5|0^^$0|@$1|2|3|4|5|6|7|1P|8|@$9|1Q|A|1R|B|C]|$9|1S|A|1T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1U|8|@$9|1V|A|1W|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|1X|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1Y|8|@$9|1Z|A|20|B|C]]|D|@]|E|$]]|$1|O|3|P|5|6|7|21|8|@$9|22|A|23|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|6|7|24|8|@$9|25|A|26|B|C]|$9|27|A|28|B|C]|$9|29|A|2A|B|C]]|D|@]|E|$]]|$1|S|3|T|5|J|7|2B|8|@]|D|@]|E|$K|L]]|$1|U|3|V|5|6|7|2C|8|@$9|2D|A|2E|B|C]|$9|2F|A|2G|B|W]]|D|@]|E|$]]|$1|X|3|Y|5|6|7|2H|8|@$9|2I|A|2J|B|C]]|D|@]|E|$]]|$1|Z|3|10|5|J|7|2K|8|@]|D|@]|E|$K|L]]|$1|11|3|12|5|6|7|2L|8|@$9|2M|A|2N|B|C]|$9|2O|A|2P|B|C]|$9|2Q|A|2R|B|C]]|D|@]|E|$]]|$1|13|3|14|5|J|7|2S|8|@]|D|@]|E|$K|L]]|$1|15|3|16|5|6|7|2T|8|@$9|2U|A|2V|B|C]|$9|2W|A|2X|B|W]]|D|@]|E|$]]|$1|17|3|18|5|J|7|2Y|8|@]|D|@]|E|$K|L]]|$1|19|3|1A|5|6|7|2Z|8|@]|D|@]|E|$]]|$1|1B|3|1C|5|J|7|30|8|@]|D|@]|E|$K|L]]|$1|1D|3|1E|5|6|7|31|8|@]|D|@]|E|$]]|$1|1F|3|1G|5|J|7|32|8|@]|D|@]|E|$K|L]]|$1|1H|3|1I|5|6|7|33|8|@]|D|@]|E|$]]|$1|1J|3|1K|5|6|7|34|8|@]|D|@]|E|$]]|$1|1L|3|1M|5|6|7|35|8|@$9|36|A|37|B|C]]|D|@]|E|$]]|$1|1N|3|-4|5|6|7|38|8|@]|D|@]|E|$]]]|1O|$]]

I had this issue when working on a Java Project in Debian 10 with Tomcat as the application server.
The issue was that the application already had https defined as it's default protocol while I was using http to call the application in the browser. So when I try running the application I get this error in my log file:
<pre><code>org.apache.coyote.http11.AbstractHttp11Processor process
INFO: Error parsing HTTP request header
 Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
</code></pre>
I however tried using the https protocol in the browser but it didn't connect throwing the error:
Here's how I solved it:
You need a certificate to setup the https protocol for the application. I first had to create a keystore file for the application, more like a self-signed certificate for the https protocol:
<pre><code>sudo keytool -genkey -keyalg RSA -alias tomcat -keystore /usr/share/tomcat.keystore
</code></pre>
Note: You need to have Java installed on the server to be able to do this. Java can be installed using <code>sudo apt install default-jdk</code>.
Next, I added a https Tomcat server connector for the application in the Tomcat server configuration file (<code>/opt/tomcat/conf/server.xml</code>):
<pre><code>sudo nano /opt/tomcat/conf/server.xml
</code></pre>
Add the following to the configuration of the application. Notice that the keystore file location and password are specified. Also a port for the https protocol is defined, which is different from the port for the http protocol:
<pre><code>&lt;Connector protocol=&quot;org.apache.coyote.http11.Http11Protocol&quot;
 port=&quot;8443&quot; maxThreads=&quot;200&quot; scheme=&quot;https&quot;
 secure=&quot;true&quot; SSLEnabled=&quot;true&quot;
 keystoreFile=&quot;/usr/share/tomcat.keystore&quot;
 keystorePass=&quot;my-password&quot;
 clientAuth=&quot;false&quot; sslProtocol=&quot;TLS&quot;
 URIEncoding=&quot;UTF-8&quot;
 compression=&quot;force&quot;
 compressableMimeType=&quot;text/html,text/xml,text/plain,text/javascript,text/css&quot;/&gt;
</code></pre>
So the full server configuration for the application looked liked this in the Tomcat server configuration file (<code>/opt/tomcat/conf/server.xml</code>):
<pre><code>&lt;Service name=&quot;my-application&quot;&gt;
 &lt;Connector protocol=&quot;org.apache.coyote.http11.Http11Protocol&quot;
 port=&quot;8443&quot; maxThreads=&quot;200&quot; scheme=&quot;https&quot;
 secure=&quot;true&quot; SSLEnabled=&quot;true&quot;
 keystoreFile=&quot;/usr/share/tomcat.keystore&quot;
 keystorePass=&quot;my-password&quot;
 clientAuth=&quot;false&quot; sslProtocol=&quot;TLS&quot;
 URIEncoding=&quot;UTF-8&quot;
 compression=&quot;force&quot;
 compressableMimeType=&quot;text/html,text/xml,text/plain,text/javascript,text/css&quot;/&gt;

 &lt;Connector port=&quot;8009&quot; protocol=&quot;HTTP/1.1&quot;
 connectionTimeout=&quot;20000&quot;
 redirectPort=&quot;8443&quot; /&gt;

 &lt;Engine name=&quot;my-application&quot; defaultHost=&quot;localhost&quot;&gt;
 &lt;Realm className=&quot;org.apache.catalina.realm.LockOutRealm&quot;&gt;
 &lt;Realm className=&quot;org.apache.catalina.realm.UserDatabaseRealm&quot;
 resourceName=&quot;UserDatabase&quot;/&gt;
 &lt;/Realm&gt;

 &lt;Host name=&quot;localhost&quot; appBase=&quot;webapps&quot;
 unpackWARs=&quot;true&quot; autoDeploy=&quot;true&quot;&gt;

 &lt;Valve className=&quot;org.apache.catalina.valves.AccessLogValve&quot; directory=&quot;logs&quot;
 prefix=&quot;localhost_access_log&quot; suffix=&quot;.txt&quot;
 pattern=&quot;%h %l %u %t &amp;quot;%r&amp;quot; %s %b&quot; /&gt;

 &lt;/Host&gt;
 &lt;/Engine&gt;
&lt;/Service&gt;
</code></pre>
This time when I tried accessing the application from the browser using:
<pre><code>https://my-server-ip-address:https-port
</code></pre>
In my case it was:
<pre><code>https:35.123.45.6:8443
</code></pre>
it worked fine. Although, I had to accept a warning which added a security exception for the website since the certificate used is a self-signed one.
That's all.
I hope this helps

I use Tomcat 7.0.43 with a websocket application. My app works fine in Tomcat 7.0.42 but with 43 I get the following output when I try to access my server on websockets:

<pre><code>Sep 16, 2013 3:08:34 AM org.apache.coyote.http11.AbstractHttp11Processor process
INFO: Error parsing HTTP request header
 Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
</code></pre>

My browser console shows the following: 

<pre><code>WebSocket connection to 'ws://www.testapp.com/socket/notification/848df2e62fcf93e1b3?X-Atmosphere-tracking-i…Date=0&amp;Content-Type=application/json;%20charset=UTF-8&amp;X-atmo-protocol=true' failed: Unrecognized frame opcode: 5 
</code></pre>

Here is the access log for that request: 

<pre><code>"GET /socket/notification/848df2e62fcf93e1b3?X-Atmosphere-tracking-id=0&amp;X-Atmosphere-Framework=2.0.2-javascript&amp;X-Atmosphere-Transport=websocket&amp;X-Atmosphere-TrackMessageSize=true&amp;X-Cache-Date=0&amp;Content-Type=application/json;%20charset=UTF-8&amp;X-atmo-protocol=true HTTP/1.1"
</code></pre>

What has changed in Tomcat 7.0.43? What do I have to change?

Tomcat 7.0.43 "INFO: Error parsing HTTP request header"

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我在websocket应用程序中使用Tomcat 7.0.43。我的应用程序在Tomcat 7.0.42中运行良好，但是使用43时，当我试图访问websockets上的服务器时，我得到了以下输出：Sep 16, 2013 3:08:34 AM org.apache.coyote.http11.AbstractHttp1...

问Tomcat 7.0.43“信息:解析HTTP请求头错误”
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