Validation Error of Spring Beans Schema inside Application Context

after setting up a new Spring-based application, I'm running into trouble with a referenced schema (http://www.springframework.org/schema/beans/spring-beans-3.0.xsd) inside the application context.

appContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns:beans="http://www.sp开发者_JS百科ringframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

 ....

</beans:beans>

Error

Referenced file contains errors (http://www.springframework.org/schema/beans/spring-beans-3.0.xsd).

Even if I reduce the configuration to the minimum version (without any bean definition), I get this error. Does anybody has a hint what's wrong here? Thanks in advance!

Btw: I'm using STS 2.7.1

Maybe you had an error which is no more there, but the error message is displayed from a cache. This error may have appeared because you had a mix of 2.5 xsd and 3.0 xsd in your applicationContext.xml. You should be able to get details about this error by right-clicking on it (not especially explicit details though...).

Try to clean the error message and re-validate with this minimal file anyway.

In MyEclipseBlue, go to Preferences->My Eclipse->Internet Tools->Cache and remove the files

In Eclipse/STS go to Preferences -> General -> Network Connections and remove the offending files.

Copy everything inside tag Then delete everything except the first line and save the file. Paste what you copied and resave (be sure you have internet connection working just to be safe). Save the file again