Re: Compilation failure when upgrade the GWT version from 2.7.0 to 2.8.2

This is not normal. Given that you have no third-party dependency, and that Locale.ROOT was added in GWT 2.7, I'd say that your gwt-user JAR is probably corrupt. Try downloading it again (delete it and re-run Maven).

On Tuesday, March 5, 2019 at 2:17:50 PM UTC+1, Periyasamy Ramachandran wrote:

Hello,

I'm trying to upgrade my GWT version from 2.7.0 to 2.8.2.

The dependencies are specified as below in the pom.xml

<properties>

 <version.gwt>2.8.2</version.gwt>

  <version.maven.gwt.plugin>2.8.2</version.maven.gwt.plugin>

 </properties>

    <dependencies>

        <!-- Maven-GWT default dependencies -->
        <dependency>

            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-servlet</artifactId>
            <version>${version.gwt}</version>
            <scope>runtime</scope>

        </dependency>
        <dependency>

            <groupId>com.google.gwt</groupId>
            <artifactId>gwt-user</artifactId>
            <version>${version.gwt}</version>
            <scope>provided</scope>

        </dependency>

    </dependencies>

<build>

<plugins>     

<plugin>

                <groupId>org.codehaus.mojo</groupId>
                <artifactId>gwt-maven-plugin</artifactId>
                <version>${version.maven.gwt.plugin}</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>test</id>
                        <goals>
                            <goal>test</goal>
                        </goals>
                        <phase>test</phase>
                    </execution>
                </executions>
                <configuration>
                    <testTimeOut>120</testTimeOut>
                    <extraParam>true</extraParam>
                    <hostedWebapp>${project.build.directory}/${project.build.finalName}</hostedWebapp>
                </configuration>
            </plugin>
</plugins>

</build>

When I compile the project using the command "mvn clean package -Dmaven.test.skip=true", the below exception is occurring.

[INFO]    Tracing compile failure path for type 'com.google.gwt.safehtml.shared.UriUtils'
[INFO]       Errors in 'jar:file:/root/.m2/repository/com/google/gwt/gwt-user/2.8.2/gwt-user-2.8.2.jar!/com/google/gwt/safehtml/shared/UriUtils.java'
[INFO]          Line 240: ROOT cannot be resolved or is not a field
[INFO]          Line 235: ROOT cannot be resolved or is not a field
[INFO]          Line 84: ROOT cannot be resolved or is not a field
[INFO]       Checked 1 dependencies for errors.
[INFO]    Tracing compile failure path for type 'com.google.gwt.dom.client.DataTransfer'
[INFO]       Errors in 'jar:file:/root/.m2/repository/com/google/gwt/gwt-user/2.8.2/gwt-user-2.8.2.jar!/com/google/gwt/dom/client/DataTransfer.java'
[INFO]          Line 127: ROOT cannot be resolved or is not a field
[INFO]       Checked 1 dependencies for errors.
[INFO]    Tracing compile failure path for type 'com.google.gwt.user.client.ui.UIObject'
[INFO]       Errors in 'jar:file:/root/.m2/repository/com/google/gwt/gwt-user/2.8.2/gwt-user-2.8.2.jar!/com/google/gwt/user/client/ui/UIObject.java'
[INFO]          Line 657: ROOT cannot be resolved or is not a field
[INFO]          Line 775: ROOT cannot be resolved or is not a field
[INFO]       Checked 1 dependencies for errors.
[INFO]    Tracing compile failure path for type 'com.google.gwt.dom.builder.client.DomStylesBuilder'
[INFO]       Errors in 'jar:file:/root/.m2/repository/com/google/gwt/gwt-user/2.8.2/gwt-user-2.8.2.jar!/com/google/gwt/dom/builder/client/DomStylesBuilder.java'
[INFO]          Line 113: ROOT cannot be resolved or is not a field
[INFO]       Checked 1 dependencies for errors.
[INFO]    Tracing compile failure path for type 'com.google.gwt.dom.client.HeadingElement'
[INFO]       Errors in 'jar:file:/root/.m2/repository/com/google/gwt/gwt-user/2.8.2/gwt-user-2.8.2.jar!/com/google/gwt/dom/client/HeadingElement.java'
[INFO]          Line 91: ROOT cannot be resolved or is not a field
[INFO]       Checked 1 dependencies for errors.
[INFO]    Tracing compile failure path for type 'com.google.gwt.user.client.ui.MultiWordSuggestOracle'
[INFO]       Errors in 'jar:file:/root/.m2/repository/com/google/gwt/gwt-user/2.8.2/gwt-user-2.8.2.jar!/com/google/gwt/user/client/ui/MultiWordSuggestOracle.java'
[INFO]          Line 534: ROOT cannot be resolved or is not a field
[INFO]       Checked 1 dependencies for errors.

The GWT version 2.7.0 is working fine. But when I update to version 2.8.0 or 2.8.2, the above error is occurring.

I'm unable to find the solution . Could you please help me to fix the problem?.

Thanks,

Periyasamy

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