iReport compile error (java.lang.String cannot be resolved) in maven NetBeans project

Question

Maybe somebody can help me to solve this issue. I am trying to integrate iReport in my NetBeans project and can't solve the following issue. When I create new report from "MyProject ---> New ---> Empty report" it won't compile and show me Preview from report Designer Tab it gives me the following error:

Compilation exceptions: com.jaspersoft.ireport.designer.compiler.ErrorsCollector@3d50d9ef net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file: 1. The type java.lang.String cannot be resolved. It is indirectly referenced from required .class files /* ^ 1 errors     at net.sf.jasperreports.engine.design.JRAbstractCompiler.compileReport(JRAbstractCompiler.java:204)     at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:512)     at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)     at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)     at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)     at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)

At the same time everything looks fine if I create new report from iReport Welcome Screen in NetBeans. This my Pom file.

<?xml version="1.0" encoding="UTF-8"?>



<repositories>
    <repository>
        <id>unknown-jars-temp-repo</id>
        <name>A temporary repository created by NetBeans for libraries and jars it could not identify. Please replace the dependencies in this repository with correct ones and delete this repository.</name>
        <url>file:${project.basedir}/lib</url>
    </repository>
    <repository>
        <id>Jasper Reports</id>
        <url>http://jaspersoft.artifactoryonline.com/jaspersoft/jr-ce-releases</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.19</version>
        <exclusions>
            <exclusion>
                <groupId>com.google.protobuf</groupId>
                <artifactId>protobuf-java</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>mchange-commons-java</artifactId>
        <version>0.2.20</version>
    </dependency>
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.5.5</version>
    </dependency>
    <dependency>
        <groupId>com.toedter</groupId>
        <artifactId>jcalendar</artifactId>
        <version>1.4</version>
    </dependency>
    <dependency>
        <groupId>org.netbeans.external</groupId>
        <artifactId>AbsoluteLayout</artifactId>
        <version>RELEASE112</version>
    </dependency>
    <dependency> <!-- needed by jasperreports to build-->
        <groupId>com.lowagie</groupId>
        <artifactId>itext</artifactId>
        <version>2.1.7</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/net.sf.jasperreports/jasperreports -->
    <dependency>
        <groupId>net.sf.jasperreports</groupId>
        <artifactId>jasperreports</artifactId>
        <version>${jasperreports.version}</version>
    </dependency>
    <dependency>
        <groupId>net.sf.jasperreports</groupId>
        <artifactId>jasperreports-functions</artifactId>
        <version>${jasperreports.version}</version>
    </dependency>
    <dependency>
        <groupId>net.sf.jasperreports</groupId>
        <artifactId>jasperreports-fonts</artifactId>
        <version>6.11.0</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.30</version>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.12</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.13</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>xalan</groupId>
        <artifactId>xalan</artifactId>
        <version>2.7.2</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.codehaus.groovy</groupId>
        <artifactId>groovy</artifactId>
        <version>2.5.9</version>
    </dependency>
    <dependency>
        <groupId>org.mariadb.jdbc</groupId>
        <artifactId>mariadb-java-client-jre7</artifactId>
        <version>1.6.1</version>
    </dependency>
</dependencies>

<pluginRepositories>
    <pluginRepository>
        <id>Jasper Reports</id>
        <url>http://jaspersoft.artifactoryonline.com/jaspersoft/jr-ce-releases</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </pluginRepository>
</pluginRepositories>

<properties>
    <java.version>1.8</java.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>13</maven.compiler.source>
    <maven.compiler.target>13</maven.compiler.target>
    <jasperreports.version>6.11.0</jasperreports.version>
</properties>

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.22.2</version>
            <configuration>
                <argLine>-Djava.awt.headless=true</argLine>
            </configuration>
        </plugin>
        </plugins>
    </pluginManagement>
    <plugins>
        <plugin>
            <artifactId>maven-resources-plugin</artifactId>
            <version>3.1.0</version>
            <executions>
                <execution>
                    <id>copy-resources</id>
                    <phase>validate</phase>
                    <goals>
                        <goal>copy-resources</goal>
                    </goals>
                    <configuration>
                        <outputDirectory>${basedir}/target/TechInfo</outputDirectory>
                        <resources>
                            <resource>
                                <directory>resources</directory>
                                <filtering>true</filtering>
                            </resource>
                        </resources>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-dependency-plugin</artifactId>
            <executions>
                <execution>
                    <id>copy-dependencies</id>
                    <phase>prepare-package</phase>
                    <goals>
                        <goal>copy-dependencies</goal>
                    </goals>
                    <configuration>
                        <outputDirectory>${project.build.directory}/lib</outputDirectory>
                        <overWriteReleases>false</overWriteReleases>
                        <overWriteSnapshots>false</overWriteSnapshots>
                        <overWriteIfNewer>true</overWriteIfNewer>
                    </configuration>
                </execution>
            </executions>
        </plugin> 
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jar-plugin</artifactId>
            <version>3.2.0</version>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                        <classpathPrefix>lib/</classpathPrefix>
                        <mainClass>techinfo1.MainPage</mainClass>
                    </manifest>
                    <manifestEntries>
                        <Class-Path>.</Class-Path>
                    </manifestEntries>
                </archive>
                <finalName>TechInfo_1.0</finalName>
            </configuration>
        </plugin>  
        <plugin>
            <groupId>com.alexnederlof</groupId>
            <artifactId>jasperreports-plugin</artifactId>
            <version>2.6</version>
            <configuration>
                <sourceDirectory>${project.build.sourceDirectory}/../resources</sourceDirectory>
                <outputDirectory>${project.build.outputDirectory}/jrxml</outputDirectory>
                <verbose>true</verbose>
            </configuration>
            <dependencies>
                <dependency>
                    <groupId>net.sf.jasperreports</groupId>
                    <artifactId>jasperreports-functions</artifactId>
                    <version>6.11.0</version>
                </dependency>
                <dependency>
                    <groupId>net.sf.jasperreports</groupId>
                    <artifactId>jasperreports</artifactId>
                    <version>6.11.0</version>
                </dependency>
            </dependencies>
            <executions>
                <execution>
                    <phase>process-resources</phase>
                    <goals>
                        <goal>jasper</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>

    </plugins>            
</build>

I also downgraded JRE from 8 to JRE 7. Added whole bunch of files in Libraries for iReport. From Report query it gives me same error. It connects to database but can't read from it.

Any ideas what am I missing in my project?

Thank you in advance.

Answer 1

i dont know how to explain, but this work for me. go to report properties then change the language to groovy. before i change my language to java then error like that.