Spring boot - cannot use @Value annotation

Question

I'm trying to use the @Value to load some value from application.properties based on the profile, but there is something that does not work...

In my application.properties I have

[email protected]@

I have

<resources>
        <resource>
            <directory>src/main/resources</directory>
            <filtering>true</filtering>
        </resource>
    </resources>

in my pom.xml. When compiling, i see that my application.properties has the right value of jdbc.url

Then i want to use this property when connecting to the DB

 @Value("${jdbc.url}") 
    private String dbUrl;

        @PostConstruct
        public Connection getConnection(){

                Class.forName("com.mysql.jdbc.Driver");
                return DriverManager.getConnection(dbUrl, "user", "xxxxxxx");
            }

but dbUrl is null... Do i need something else?

Read your code again (small hint spring.datasource.url != jdbc.url)..... Also I would say what you are doing (first using maven to replace variables) is wrong to begin with... — M. Deinum
– M. Deinum, Commented Jan 27, 2017 at 9:28
thanks.. what an error... but why using maven with profiles to set properties is wrong? — MarioC
– MarioC, Commented Jan 27, 2017 at 9:43
Why are you constructing the Connection manually anyway? Doing this sort of thing automatically is the whole point of using Boot. — chrylis -cautiouslyoptimistic-
– chrylis -cautiouslyoptimistic-, Commented Jan 27, 2017 at 9:47
Why it is wrong, because it means you are creating artifacts per environment whereas you should be using Spring Profiles and only build a single artifact. When building artifacts per environment (dev, test, prod) you are basically going live with an untested artifact. — M. Deinum
– M. Deinum, Commented Jan 27, 2017 at 10:16

foxy · Accepted Answer · 2017-01-27 09:37:52Z

1

You should load the value like this:

@Value("${spring.datasource.url}") 
private String dbUrl;

answered Jan 27, 2017 at 9:37

foxy

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Comments

user4123084 · Accepted Answer · 2017-01-27 09:46:03Z

0

Maybe you need specify delimiters, inside your plugins.

 <configuration>
    <delimiters>
        <delimiter>@</delimiter>
    </delimiters>
    <useDefaultDelimiters>false</useDefaultDelimiters>
</configuration>

answered Jan 27, 2017 at 9:46

user4123084

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