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Asked: 2026-05-30T08:22:24+00:00

So mongoDB is running on 27017 and my collection name is test. try {

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So mongoDB is running on 27017 and my collection name is test.

  try {
            // - Connection to base
            String mongoURI = "mongodb://localhost:27017/test";
            MongoDbConnection connection = null;

        Map<String, Object> parameters = new HashMap<String, Object>();
        try {
line35      connection = new MongoDbConnection(mongoURI, null, null);
                parameters.put(MongoDbDataSource.CONNECTION, connection);
                JasperDesign jasperDesign = JRXmlLoader.load("/home/gocoffee.jrxml");
                JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
                File jasperFile;
                jasperFile = new File("/home/MongoDbReport.jasper");
                JasperCompileManager.compileReportToFile("/home/gocoffee.jrxml", "MongoDbReport.jasper");
                JasperFillManager.fillReportToFile("/home/MongoDbReport.jasper", parameters);               
                JasperExportManager.exportReportToPdfFile("/home/MongoDbReport.jrprint");
            }

And I have this error, I don’t understand why :

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/log4j/Logger
    at com.jaspersoft.mongodb.MongoDbConnection.<init>(MongoDbConnection.java:62)
    at Generate.main(Generate.java:35)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Logger
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)

The MongoURI seems fine and i think i don’t have any login or password

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1 Answer

  1. Editorial Team

    I agree with @AdamC: you need log4j. But I would say that it’s not a matter of “installing” it; you just need to add a log4j.jar file to your project classpath. Your code looks fine.

    EDIT: moving info from my comment into the answer.

    In addition to adding log4j.jar to the classpath, you also need a file called log4j.properties to configure log4j. You can create your own, or you can grab the copy from the MongoDB connector source on jasperforge. Look for src/main/resources/log4j.properties.

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