spring - cvc-complex-type.2.4.c：匹配通配符是严格的，但找不到元素“util:properties”的声明

Question

我的弹簧配置文件是这样的

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:util="http://www.springframework.org/schema/util"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:p="http://www.springframework.org/schema/p" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd">
.
.
.
<util:properties id="mailProperties">
        <prop key="mail.smtp.auth">${mail.smtp.auth}</prop>
        <prop key="mail.smtp.starttls.enable">${mail.smtp.starttls.enable}</prop>
        <prop key="mail.smtp.quitwait">${mail.smtp.quitwait}</prop>
        <prop key="mail.smtp.debug">${mail.smtp.debug}</prop>
    </util:properties>

我在配置 xml 文件中遇到以下错误

schema_reference.4: Failed to read schema document 'http://www.springframework.org/schema/util/spring-util-3.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.

让我知道需要做什么

Answer 1

尝试去掉所有 .xsd 前面的 -3.0。我遇到了这个愚蠢的错误，删除版本有效 版本号对我有用。

我不能告诉你为什么会这样。如果您查看 org.springframework.beans-3.1.2.jar（例如）并找到 META-INF/spring.schemas，您会发现所有这些

http\://www.springframework.org/schema/util/spring-util-2.0.xsd=org/springframework/beans/factory/xml/spring-util-2.0.xsd
http\://www.springframework.org/schema/util/spring-util-2.5.xsd=org/springframework/beans/factory/xml/spring-util-2.5.xsd
http\://www.springframework.org/schema/util/spring-util-3.0.xsd=org/springframework/beans/factory/xml/spring-util-3.0.xsd
http\://www.springframework.org/schema/util/spring-util-3.1.xsd=org/springframework/beans/factory/xml/spring-util-3.1.xsd
http\://www.springframework.org/schema/util/spring-util.xsd=org/springframework/beans/factory/xml/spring-util-3.1.xsd

您会在那里找到模式，所以 XML 解析器为什么会抱怨对我来说是个谜。