Eclipse Content is not allowed in prolog

Question

I'm having trouble opening my main in my eclipse project. It keeps coming up with:

"content is not allowed in prolog"

I haven't altered my code or anything. I have no idea what has gone wrong, anybody seen this before?

Answer 1

I had the same error and figured it out.

When I tried to create a new string resource, I tried to paste the new resource value on the "Android Resources" screen. To my surprise, the paste operation (using CTRL + V) does not work on that screen, and I tried it several times.

After that I started getting the error. When I switched from the "Android Resources" screen to the raw XML screen of the Strings.xml file, I noticed that all the text that I tried to paste was at the beginning of the file, like this:

Image content description. Image content description.<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="app_name">My App</string>
</resources>

And that was causing the error for me.

Answer 2

Restarting Eclipse and Cleaning the problem dint help. I opened the .xml file in a XML editor and did a Validate on that error alone. this solved my problem. Hope this helps for people who still got the problem

Answer 3

This error is generated during parsing of an XML document. Here is one writeup:

http://www.mkyong.com/java/sax-error-content-is-not-allowed-in-prolog/

You didn't provide sufficient information in your question to know which file might be corrupted, but search for xml files in your project and see if they look ok.

Answer 4

Its most likely an encoding problem: (edit in notepad++ and select) encoding utf-8 -BOM

Answer 5

I had the same problem, It may be because of XML parser issue, I restarted the eclipse it started working fine.

Answer 6

I also had the same error.Check your Xml files.There may be syntax error in xml files.

Answer 7

Having incorrect encoding information might cause this.

<?xml version="1.0" encoding="utf-16"?>

at the top of an ascii or utf-8 encoded file for example.

Answer 8

Yeah, I had the same, and the first line in strings.xml:

<?xml version="1.0" encoding="utf-8"?>

was marked with this error. Though I also didn't alter any code, yesterday, when I closed Eclipse, everything was fine, no errors (though some warnings were present, but that doesn't matter, I think)

All I did now is Selecting this line, Ctrl+X (Cut) it, Ctrl+S to save, Ctrl+V (Paste) it back and Ctrl+S again, and the error is gone. Not sure if it will work for everybody, but it did for me 8)

Answer 9

Check: that you have no any additional wrong text before in the beginning of file.

Answer 10

In my case I was seeing those error in java classes i.e. NOT XML and, the problem was related to a hidden file called .springBeans in the main project directory. I had a section "configs" and "autoconfigs" like:

java:org.DDDDDDDDDD.config.PersistenceConfig

java:org.DDDDDDDDDD.core.Application

When i moved everything to autoconfigs it all worked for me

Answer 11

In my case, server.xml got corrupted.

Go to pivotal/tomcat server location.

Path : base-instance\conf File Name: server.xml

So i tried replacing below content in that file and it worked fine.

Sample content:-

<?xml version="1.0" encoding="UTF-8"?>
<Server port="${base.shutdown.port}" shutdown="SHUTDOWN">
    <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/>
    <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
    <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/>
    <Listener className="com.springsource.tcserver.serviceability.deploy.TcContainerDeployer"/>
    <Listener accessFile="${catalina.base}/conf/jmxremote.access" address="127.0.0.1" authenticate="true" className="com.springsource.tcserver.serviceability.rmi.JmxSocketListener" passwordFile="${catalina.base}/conf/jmxremote.password" port="${base.jmx.port}" useSSL="false"/>
    <GlobalNamingResources>
        <Resource auth="Container" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" name="UserDatabase" pathname="conf/tomcat-users.xml" type="org.apache.catalina.UserDatabase"/>
    </GlobalNamingResources>
    <Service name="Catalina">
        <Executor maxThreads="300" minSpareThreads="50" name="tomcatThreadPool" namePrefix="tomcat-http--"/>
        <Engine defaultHost="localhost" name="Catalina">
            <Realm className="org.apache.catalina.realm.LockOutRealm">
                <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/>
            </Realm>
            <Host appBase="webapps" autoDeploy="true" deployOnStartup="true" deployXML="true" name="localhost" unpackWARs="true">
                <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" pattern="%h %l %u %t &quot;%r&quot; %s %b" prefix="localhost_access_log." suffix=".txt"/>
            </Host>
        </Engine>
        <Connector acceptCount="100" connectionTimeout="20000" executor="tomcatThreadPool" maxKeepAliveRequests="15" port="${nio.http.port}" protocol="org.apache.coyote.http11.Http11NioProtocol" redirectPort="${nio.https.port}"/>
    </Service>
</Server>

Answer 12

I had a similar issue and wanted to make a note, in case other had the same root cause that I did.

My issue was related to the xsi:schemaLocation. The url stated was no longer being served. Via googling, I got a copy of the actual xsd file, which I included locally then updated the reference. This solved my issue.

e.g. http://dozer.sourceforge.net/schema/beanmapping.xsd became beanmapping.xsd in the snippet below, after adding the .xsd file to the same folder.

<?xml version="1.0" encoding="UTF-8"?>
<mappings xmlns="http://dozer.sourceforge.net" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://dozer.sourceforge.net beanmapping.xsd">

Answer 13

i delete the c:/users/your_computer/appdata/.gradle/cache and it went go to normal

Answer 14

I fix it with a non - xml file by clearing the file in the text editor, save the empty file and paste it back. (CTRL+A, CTRL+X, CTRL+S, CTRL+V, CTRL+S)