On Monday, May 19, 2014 5:50:35 PM UTC+2, Arthur Rosenzahl wrote:
Hi all,i hope this group is suitable for my question, even if it is not directly related to GWT itself.
For GWT+Maven-related questions, you can use https://groups.google.com/d/forum/codehaus-mojo-gwt-maven-plugin-users
In this case however, I believe it's directly related to GWT, independently of whether you'd use Maven or not.
I have a Maven GWT project. I included Hibernate and HSQLDB as persistence layer. Running the unit tests is fine, but when it try to run the server component, logging does not work and so i am blind to the errors on the server side. The errors i encouter are:[ERROR] log4j:ERROR A "org.apache.log4j.RollingFileAppender" object is not assig
nable to a "org.apache.log4j.Appender" variable.
[ERROR] log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
[ERROR] log4j:ERROR [sun.misc.Launcher$AppClassLoader@baf1915] whereas object of
type
[ERROR] log4j:ERROR "org.apache.log4j.RollingFileAppender" was loaded by [WebApp
ClassLoader=1312837549@4e404fad].
[ERROR] log4j:ERROR Could not instantiate appender named "file".
[ERROR] log4j:ERROR A "org.apache.log4j.ConsoleAppender" object is not assignabl
e to a "org.apache.log4j.Appender" variable.
[ERROR] log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
[ERROR] log4j:ERROR [sun.misc.Launcher$AppClassLoader@baf1915] whereas object of
type
[ERROR] log4j:ERROR "org.apache.log4j.ConsoleAppender" was loaded by [WebAppClas
sLoader=1312837549@4e404fad].
[ERROR] log4j:ERROR Could not instantiate appender named "stdout".From googling i am pretty sure it is because two instances of the log4j.jar are present.Is there a good way or best practice way to solve this issue? I run the project in development mode from the console.My Pom.xml looks like this:
<project xmlns="http://maven.apache.org/POM/4.0.0 " xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance "
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd ">
<modelVersion>4.0.0</modelVersion>
<groupId>testproject</groupId>
<artifactId>trustme-mdm-gwtp</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>GWTP Basic</name>
<description>Basic GWTP application</description>
<properties>
<!-- client -->
<gwt.version>2.6.0</gwt.version>
Try 2.6.1.
2.6.0 has classloading issues in DevMode (for server-side classes).
...
<gwtp.version>1.2.1</gwtp.version>
<gin.version>2.1.2</gin.version>
<!-- server -->
<guice.version>3.0</guice.version>
<!-- testing -->
<junit.version>4.7</junit.version>
<jukito.version>1.4</jukito.version>
<!-- maven -->
<gwt-maven-plugin.version>2.6.0 </gwt-maven-plugin.version>
<maven-surefire-plugin.version> 2.6</maven-surefire-plugin.version>
<maven-compiler-plugin.version> 2.3.2</maven-compiler-plugin.version>
<maven-resources-plugin.version> 2.5</maven-resources-plugin.version>
<maven-processor-plugin.version> 2.0.5</maven-processor-plugin.version>
<maven-build-helper-plugin.version> 1.7</maven-build-helper-plugin.version>
<target.jdk>1.7</target.jdk>
<project.build.sourceEncoding> UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding> UTF-8</project.reporting.outputEncoding>
<webappDirectory>${project.build.directory}/${project. </build.finalName} webappDirectory>
</properties>
<build>
<outputDirectory>${webappDirectory}/WEB-INF/ </outputDirectory>classes
<plugins>
<!-- JUnit Testing - skip *.GwtTest cases -->
<!-- 'mvn test' - runs the Jukito tests -->
<plugin>
<groupId>org.apache.maven.plugins </groupId>
<artifactId>maven-surefire-plugin </artifactId>
<version>${maven-surefire-plugin.version} </version>
<configuration>
<includes>
<include>**/*Test.java</include>
</includes>
<excludes>
<exclude>**/*GwtTest.java</exclude>
</excludes>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins </groupId>
<artifactId>maven-compiler-plugin </artifactId>
<version>2.3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<!-- GWT -->
<!-- 'mvn gwt:run' - runs development mode -->
<!-- 'mvn gwt:debug' - runs debug mode -->
<!-- 'mvn gwt:compile' - compiles gwt -->
<!-- 'mvn integration-test' - runs the gwt tests (*GwtTest.java) -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<version>${gwt.version}</version>
<configuration>
<!-- With multiple tests use GwtTestSuite.java for speed -->
<includes>**/*GwtTest.java</includes>
<extraJvmArgs>-Xss1024K -Xmx1024M -XX:MaxPermSize=256M</extraJvmArgs>
<copyWebapp>true</copyWebapp>
<hostedWebapp>${webappDirectory} </hostedWebapp>
<runTarget>Project.html</runTarget>
<modules>
<module>testproject.Project</module>
</modules>
</configuration>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<!-- Google Web Toolkit -->
<dependency>
<groupId>com.google.gwt</groupId>
<artifactId>gwt-user</artifactId>
<version>${gwt.version}</version>
</dependency>
<!-- GWT-Platform -->
<dependency>
<groupId>com.gwtplatform</groupId>
<artifactId>gwtp-all</artifactId>
<version>${gwtp.version}</version>
</dependency>
<!-- DI -->
<dependency>
<groupId>com.google.inject</groupId>
<artifactId>guice</artifactId>
<version>${guice.version}</version>
</dependency>
<dependency>
<groupId>com.google.inject.extensions </groupId>
<artifactId>guice-servlet</artifactId>
<version>${guice.version}</version>
</dependency>
<dependency>
<groupId>com.google.inject.extensions </groupId>
<artifactId>guice-assistedinject </artifactId>
<version>${guice.version}</version>
</dependency>
<dependency>
<groupId>com.google.gwt.inject </groupId>
<artifactId>gin</artifactId>
<version>${gin.version}</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jukito</groupId>
<artifactId>jukito</artifactId>
<version>${jukito.version}</version>
<scope>test</scope>
</dependency>
<!-- Hibernate -->
<!-- for JPA, use hibernate-entitymanager instead of hibernate-core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager </artifactId>
<version>4.3.5.Final</version>
</dependency>
<!-- hSQLDB -->
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>2.3.2</version>
</dependency>
<!-- add slf4j interfaces to classpath -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
<!-- GWT-Log -->
<dependency>
</span
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