声明字符串类型为一行的spring bean

Question

I want to declare a bean of String type in an spring xml context in the shortest way possible. So far this is the shortest way I've found

<bean id="bean1" class="java.lang.String">
        <constructor-arg type="String" value="someword" />
</bean>

However, for readability, I would like to 'stack' multiple of these neatly, kinda like so, and I can't just put all the code on one line because of team standards about line code length:

<bean id="bean1" class="java.lang.String">blah blah </bean>
<bean id="bean2" class="java.lang.String">blah blah </bean>
<bean id="bean3" class="java.lang.String">blah blah </bean>

Answer 1

For readability I would still prefer keeping it all in the context file and also I can redeploy the context file separately to the classpath without having to redeploy the whole .jar

If you want to keep everything in the context file and want to simplify it then you should be using PropertyPlaceholderConfigurer instead of String beans.

Here is an example,

1. Create a properties file named as project.properties .

2. Put all your Strings inside that file as {key=value} pair. For Example,

    myStrings.cnst1=FOO myStrings.cnst2=BAR myStrings.cnst3=FOOBAR 

3. Now, declare a PropertyPlaceholderConfigurer inside your context file as follows:

    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location"> <value>project.properties</value> </property> 

4. Now, you can easily access the values as follows:

    @Value("${myStrings.cnst1}") private String someString; 

Refer this link and this link for more information.