How to set the compiler encoding?

Question

I'd like to make Maven compile my project with the -Dfile.encoding=UTF8 flag, by setting it in the pom.xml, of the parent project.

This is not doing it:

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

So I get this error when Maven compiles:

    javac option: M:\Parent\persistence\target\generated-sources\apt
...\Database.java:90: error: unmappable character for encoding Cp1252
     * Semantics of SQL INSERT OR IGNOREÃ?

May we see the incriminated line in Database.java, just for completeness? — Luca Geretti
– Luca Geretti, Commented Jun 19, 2012 at 17:07
It looks the Database.java is a generated file and may be you missed to configure the correct at the plugin ? which generated the Database.java file... — khmarbaise
– khmarbaise, Commented Jun 19, 2012 at 17:08

bluejekyll · Accepted Answer · 2012-06-19 17:12:06Z

2

According to the docs, what you have looks to be correct:

http://maven.apache.org/plugins/maven-compiler-plugin/compile-mojo.html

since that's failing, try setting it explicitly:

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                    <encoding>${project.build.sourceEncoding}</encoding>
                </configuration>
            </plugin>

answered Jun 19, 2012 at 17:12

bluejekyll

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2 Comments

khmarbaise Over a year ago

See the docs: Default value is: ${project.build.sourceEncoding}.

simpatico Over a year ago

even doing so (and even <ecoding>UTF-8</encoding> did sovle the problem. I'm setting only the parent pom. Maybe if I change in the project pom it will work.

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