Spring-Boot:如何在@ImportResource中引用application.properties

Question

我的Spring Boot应用程序中有一个applicationContext.xml文件.在这个文件中,它有一个属性占位符 - $ {profile.services.url} - 用于配置<jaxws:client> bean的"address"属性.

在我的Application.java类中,我导入了这个文件.

@ImportResource("classpath:applicationContext.xml")
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

我在application.properties中定义了"profile.services.url".但是,在我的XML文件中构建bean时无法识别它.我尝试添加以下内容,但它似乎不起作用.

<context:property-placeholder location="classpath:application.properties"/>

关于如何让@ImportResource识别Spring Boot的属性支持的任何建议？

Answer 1

我有以下代码:

package demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;

import java.util.Collection;

@ComponentScan
@EnableAutoConfiguration
public class Application {

    public static void main(String[] args) {
        ApplicationContext applicationContext = SpringApplication.run(Application.class, args);
        Collection<Foo> shouldBeConfigured = applicationContext.getBeansOfType(Foo.class).values();
        System.out.println(shouldBeConfigured.toString());
    }
}

@Configuration
@ImportResource("/another.xml")
class XmlImportingConfiguration {
}

class Foo {
    private String name;

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Foo{" +
                "name='" + name + '\'' +
                '}';
    }

}

我有一个Spring XML配置文件,another.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <context:property-placeholder location="another.properties" />

    <!-- this property value is defined in another.properties, which we install in this XML file
    -->
    <bean class="demo.Foo" >
        <property name="name" value="${name.property}"/>
    </bean>

    <!-- this property value is defined in application.properties, which Spring Boot automatically installs for us.
    -->
    <bean class="demo.Foo" >
        <property name="name" value="${some.property}"/>
    </bean>

</beans>

我有以下内容pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.demo</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <name>demo</name>
    <description>Demo project</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.0.0.RC1</version>
    </parent>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <properties>
        <start-class>demo.Application</start-class>
        <java.version>1.7</java.version>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>http://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>http://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>http://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>http://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

</project>

最后,我有两个.properties文件another.properties,和application.properties:

# application.properties 
some.property=Test

和..

# another.properties 
name.property=Another

当我运行它时,输出是:

[Foo {name ='Another'},Foo {name ='Test'}]

这似乎有效.

我不太确定我理解错误.你能详细说明,或者确认这对你来说似乎是令人满意的行为吗？