Question

我有一个web.xml，我打算用pom.xml中的值替换属性占位符。但是在阅读了堆栈溢出的How to replace a value in web.xml with a Maven property?问题后，我按照以下方式实现了它。

现在我的web.xml看起来像这样

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <context-param>
        <param-name>spring.profiles.active</param-name>
        <param-value>${spring.profiles.to.active}</param-value>
    </context-param>

    ...
    ...
</web-app>

我的pom.xml的构建部分看起来像这样

<build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <filteringDeploymentDescriptors>true</filteringDeploymentDescriptors>
                    <webResources>
                        <resource>
                            <directory>src/main/webapp</directory>
                            <filtering>true</filtering>
                            <includes>
                                <include>**/web.xml</include>
                            </includes>
                        </resource>
                    </webResources>
                    <warSourceDirectory>src/main/webapp</warSourceDirectory>
                    <webXml>src/main/webapp/WEB-INF/web.xml</webXml>
                </configuration>
            </plugin>
     </plugins>
</build>

当我使用 mvn package 运行应用程序时所有这些更改之后，它执行它打算执行的操作，即它实际上用预期值替换占位符和更新的web.xml存在于目标目录。

所以现在我的新web.xml看起来像这样

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <context-param>
        <param-name>spring.profiles.active</param-name>
        <param-value>development</param-value>
    </context-param>
    ...
    ...
</web-app>

但现在有趣的部分来了。当我要在tomcat或Pivotal Tc服务器中部署它时，它给我这个奇怪的错误

INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring/root-context.xml]
INFO : org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 511 ms
INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization started
ERROR: org.springframework.web.servlet.DispatcherServlet - Context initialization failed
java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.profiles.to.active' in string value "${spring.profiles.to.active}"
    at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174)
    at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)
    at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:194)
    at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:158)
    at org.springframework.core.env.AbstractPropertyResolver.resolveNestedPlaceholders(AbstractPropertyResolver.java:185)
    at org.springframework.core.env.PropertySourcesPropertyResolver.getProperty(PropertySourcesPropertyResolver.java:87)
    at org.springframework.core.env.PropertySourcesPropertyResolver.getProperty(PropertySourcesPropertyResolver.java:60)
    at org.springframework.core.env.AbstractEnvironment.getProperty(AbstractEnvironment.java:465)
    at org.springframework.core.env.AbstractEnvironment.doGetActiveProfiles(AbstractEnvironment.java:241)
    at org.springframework.core.env.AbstractEnvironment.getActiveProfiles(AbstractEnvironment.java:228)
    at org.springframework.core.env.AbstractEnvironment.merge(AbstractEnvironment.java:442)
    at org.springframework.context.support.AbstractApplicationContext.setParent(AbstractApplicationContext.java:402)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:621)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    at javax.servlet.GenericServlet.init(GenericServlet.java:158)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1144)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1031)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4997)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5289)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3831)
    at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:292)
    at org.apache.catalina.core.StandardContext.backgroundProcess(StandardContext.java:5616)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1377)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1381)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1381)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1349)
    at java.lang.Thread.run(Thread.java:745)

有没有人遇到过这个问题？或者有没有人有这个问题的解决方案？

如何使用pom.xml中的值替换web.xml中的属性占位符

0 个答案: