我正在阅读SpringMVC的文档,我有一个关于init params的问题。如果重要的话,我正在使用Spring3.2。contextConfigLocation和命名空间之间有什么区别?contextConfigLocation是否仅用于指定文件夹,其中上下文类可以找到XML定义,而命名空间属性用于指定文件名?
<servlet>
<servlet-name>AppServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF</param-value>
</init-param>
<init-param>
<param-name>namespace</param-name>
<param-value>application-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
这是对的吗?它应该使用/Web-INF/application-context.xml吗?你应该指定路径吗?
发布于 2018-03-30 19:04:57
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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_3_0.xsd">
<display-name>Spring Web Application example</display-name>
<!-- Configurations for the root application context (parent context) -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/jdbc/spring-jdbc.xml
/WEB-INF/spring/security/spring-security-context.xml
</param-value>
</context-param>
<!-- Configurations for the DispatcherServlet application context (child context) -->
<servlet>
<servlet-name>spring-mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/mvc/spring-mvc-servlet.xml
</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>spring-mvc</servlet-name>
<url-pattern>/admin/*</url-pattern>
</servlet-mapping>
</web-app>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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_3_0.xsd">
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/daoContext.xml
/WEB-INF/spring/applicationContext.xml
</param-value>
</context-param>
</web-app>
<web-app>
<servlet>
<servlet-name>golfing</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>golfing</servlet-name>
<url-pattern>/golfing/*</url-pattern>
</servlet-mapping>
</web-app>
这是从FrameworkServlet源代码:
....
/**
* Suffix for WebApplicationContext namespaces. If a servlet of this class is
* given the name "test" in a context, the namespace used by the servlet will
* resolve to "test-servlet".
*/
public static final String DEFAULT_NAMESPACE_SUFFIX = "-servlet";
....
FrameworkServlet是XmlWebApplicationContext。从XmlWebApplicationContextAPI文档:
使用contextConfigLocation
与上面示例中的根应用程序上下文相同。
...
/** Default config location for the root context */
public static final String DEFAULT_CONFIG_LOCATION = "/WEB-INF/applicationContext.xml";
/** Default prefix for building a config location for a namespace */
public static final String DEFAULT_CONFIG_LOCATION_PREFIX = "/WEB-INF/";
/** Default suffix for building a config location for a namespace */
public static final String DEFAULT_CONFIG_LOCATION_SUFFIX = ".xml";
...
/**
* The default location for the root context is "/WEB-INF/applicationContext.xml",
* and "/WEB-INF/test-servlet.xml" for a context with the namespace "test-servlet"
* (like for a DispatcherServlet instance with the servlet-name "test").
*/
@Override
protected String[] getDefaultConfigLocations() {
if (getNamespace() != null) {
return new String[] {DEFAULT_CONFIG_LOCATION_PREFIX + getNamespace() + DEFAULT_CONFIG_LOCATION_SUFFIX};
}
else {
return new String[] {DEFAULT_CONFIG_LOCATION};
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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_3_0.xsd">
<!-- Configurations for the DispatcherServlet application context (child context) -->
<servlet>
<servlet-name>spring-mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>namespace</param-name>
<param-value>spring/mvc/spring-mvc</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>spring-mvc</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
发布于 2018-03-30 19:45:51
我唯一能找到具体答案的地方是源代码:
https://stackoverflow.com/questions/-100003241
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