Spring Management Properties Profile properties--using Propertyplaceholderconfigurer

Previous Article Spring Management property configuration file properties-- Use Propertiesfactorybean to refer to the use of Org.springframework.beans.factory.config.PropertiesFactoryBean management properties files, found in the learning process through Org.springfram Ework.beans.factory.config.PropertyPlaceholderConfigurer can also manage configuration files.

1. New spring configuration file applicationcontext2.xml on the basis of the previous project (Spring_test):

<?xml version= "1.0" encoding= "UTF-8"?> <beans "xmlns=" 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-3.1.xsd Http://www.springframework.org/schema/context Http://www.springframework.org/schema/context /spring-context-3.0.xsd "> <context:annotation-config/> <context:component-scan base-package=" com.* " ></context:component-scan> <!--<context:property-placeholder location= "file:config/*.conf" Ignore-unresolvable= "true"/> <context:property-placeholder location= "Classpath:*.properties" Ignore-unresolvable= "true"/>--> <!--use annotations to inject values in properties--> <bean id= "setting" class= Pringframework.beans.factory.config.PropertyPlaceholderConfigurer "> <property name=" IgnoreuNresolvableplaceholders "value=" true "/> <property name=" Locations "> <list>
            <value>classpath:*.properties</value> <value>file:config/*.conf</value> </list> </property> <!--set encoding format--> <property name= "fileencoding" V Alue= "UTF-8" ></property> </bean> </beans>

2. Modify Configproperty.java:

@Component ("Configproperty") public
class Configproperty {

	/** author name *
	/@Value ("${author_name}")
	Private String AuthorName;
	/** Project information *
	/@Value ("${project_info}")
	private String projectInfo;

	Public String Getauthorname () {return
		authorname;
	}

	public void Setauthorname (String authorname) {
		this.authorname = authorname;
	}

	Public String Getprojectinfo () {return
		projectInfo;
	}

	public void Setprojectinfo (String projectInfo) {
		this.projectinfo = projectInfo;
	}

}

3. New Test class:

@RunWith (Springjunit4classrunner.class) 
@ContextConfiguration (locations={"classpath: Applicationcontext2.xml "}) public
class Configpropertytest {
 
    @Resource (name =" Configproperty ")
    private Configproperty Configproperty;
     
    /**
     * Test Spring annotation Gets the value of the properties file/*
    @Test public
    Void Test () {
        System.out.println ( Configproperty.getauthorname ());
        System.out.println (Configproperty.getprojectinfo ());
    }
 

Summarize:

1. How to obtain properties using the Propertiesfactorybean Management properties file:

@Value ("${properties_key}")

And Org.springframework.beans.factory.config.PropertiesFactoryBean a little different;

2. In the spring configuration file, there is a configuration for the bean configuration:

<property name= "Ignoreunresolvableplaceholders" value= "true"/>   

This is mainly to solve the exception that throws cannot be resolved.