I am getting an error "Error generating the report: java.lang.NullPointerException" while running the JMeter script using JMeter-Maven plugin

Question

I am getting an error "Error generating the report: java.lang.NullPointerException" while running the JMeter script using JMeter-Maven plugin.

Below is the screen shot of the error I am getting:

Below is my pom.xml file:

http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0 com.branch.performance simplifiedAccess 0.0.1-SNAPSHOT

<properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <!--Access Portal Login page URL -->
    <AccessLoginPageURL>test-login.com</AccessLoginPageURL>
    <!-- base URL -->
    <BaseURL>test.branch.com</BaseURL>
    <!-- Number of users to simulate to execute the performance test plan -->
    <numberOfUsers>3</numberOfUsers>
    <!-- Time in seconds to get all users activated -->
    <rampupTimeInSeconds>1</rampupTimeInSeconds>
    <!-- Number of times the plan executed by every user -->
    <numberOfLoops>1</numberOfLoops>
    <apdexSatisfiedThreshold>2000</apdexSatisfiedThreshold>
    <apdexToleratedThreshold>4000</apdexToleratedThreshold>
    <!-- JMeter Dashboard output file report name -->
    <jmeterReportTitle>Performance Dashboard</jmeterReportTitle>
</properties>


<build>
    <plugins>
        <plugin>
            <groupId>com.lazerycode.jmeter</groupId>
            <artifactId>jmeter-maven-plugin</artifactId>
            <version>3.0.0</version>


            <executions>
                <execution>
                    <id>configuration</id>
                    <goals>
                        <goal>configure</goal>
                    </goals>
                </execution>
                <execution>
                    <id>jmeter-tests</id>
                    <phase>verify</phase>
                    <goals>
                        <goal>jmeter</goal>
                    </goals>
                </execution>
                <execution>
                    <id>jmeter-check-results</id>
                    <goals>
                        <goal>results</goal>
                    </goals>
                </execution>
            </executions>

            <configuration>
                    <junitLibraries>
                        <artifact>mysql:mysql-connector-java:8.0.18</artifact>
                    </junitLibraries>
                <testFilesIncluded>

                    <jMeterTestFile>MyTestFile.jmx</jMeterTestFile>
                </testFilesIncluded>
                <testResultsTimestamp>false</testResultsTimestamp>
                <propertiesUser>
                    <AccessLoginPageURL>${LoginPageURL}</AccessLoginPageURL>
                    <BaseURL>${BaseURL}</BaseURL>
                    <numberOfUsers>${numberOfUsers}</numberOfUsers>
                    <rampupTimeInSeconds>${rampupTimeInSeconds}</rampupTimeInSeconds>
                    <numberOfLoops>${numberOfLoops}</numberOfLoops>
                    <jmeter.reportgenerator.apdex_satisfied_threshold>${apdexSatisfiedThreshold}</jmeter.reportgenerator.apdex_satisfied_threshold>
                    <jmeter.reportgenerator.apdex_tolerated_threshold>${apdexToleratedThreshold}</jmeter.reportgenerator.apdex_tolerated_threshold>
                    <jmeter.reportgenerator.report_title>${jmeterReportTitle}</jmeter.reportgenerator.report_title>
                    <!-- if below is true then doesn't show summary of events in console log -->
                    <summariser.ignore_transaction_controller_sample_result>false</summariser.ignore_transaction_controller_sample_result>
                    <jmeter.save.saveservice.subresults>true</jmeter.save.saveservice.subresults>
                    <!-- Generate JMeter report with only transaction labels and data without sub samplers -->
                    <!--jmeter.reportgenerator.exporter.html.show_controllers_only>true</jmeter.reportgenerator.exporter.html.show_controllers_only-->                      
                </propertiesUser>
                <generateReports>true</generateReports>
            </configuration>
        </plugin>
    </plugins>
</build>
<reporting>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-report-plugin</artifactId>
            <version>3.0.0-M4</version>
        </plugin>
    </plugins>
</reporting>

score 5 · Accepted Answer · answered Jan 13 '20 at 14:49

Your test didn't execute successfully:

therefore results file is empty therefore JMeter fails to generate the HTML Reporting Dashboard.

Actually a not-properly-handled NPE indicates that a big problem in the code as yoiu shouldn't normally see issues like this in more or less mature software so you can report the issue via JMeter Bugzilla as JMeter shouldn't throw a NPE, it should rather report a human-readable message that the results file is empty suggesting inspecting jmeter.log file for possible reasons.

So you should see your_test_script_name.jmx.log file under target/jmeter/logs folder., I'm pretty much sure that you will find the root cause of your test script failure there.

Check out How to Use the JMeter Maven Plugin article for more information on running JMeter tests via Apache Maven

Hi Dmitri, Thanks for your reply!! I got the issue resolved as I messed up with the csv file path.. — Nahor, Jan 13 '20 at 15:35

score 1 · Answer 2 · answered Oct 15 '20 at 10:17

1

Run the test from GUI Mode once and confirm that test is getting executed properly. then run from the CLI Mode.

answered Oct 15 '20 at 10:17

Ajay Kopperla

199
2
5

I am getting an error "Error generating the report: java.lang.NullPointerException" while running the JMeter script using JMeter-Maven plugin

2 Answers2