执行jar文件时出错

Question

I have a jar file named- ParseCSV-0.0.1-SNAPSHOT.jar and the contents of it are -

• META-INF/
• META-INF/MANIFEST.MF
• foo/
• foo/ReadCSV.class
• META-INF/maven/
• META-INF/maven/Test/
• META-INF/maven/Test/ParseCSV/
• META-INF/maven/Test/ParseCSV/pom.xml
• META-INF/maven/Test/ParseCSV/pom.properties

The main class is ReadCSV.class and it takes a CSV file (C:\\Testting\\ValidaResults.csv) as an input parameter. I am trying to execute the jar file from the command promt by running the following command-

java -jar . ParseCSV-0.0.1-SNAPSHOT.jar "C:\Testting\ValidationResult.csv"

But I am getting an error saying-

Error: Could not find or load main class foo.ReadCSVTest

What is going wrong here.

Answer 1

Why do you have a . between jar and ParseCSV..?

Try this first:

java -jar ParseCSV-0.0.1-SNAPSHOT.jar "C:\Testting\ValidationResult.csv"

If this does not work, then try:

java -cp ParseCSV-0.0.1-SNAPSHOT.jar;. foo.ReadCSV "c:\Testting\ValidationResult.csv" 

If this works, then i would inspect the META-INF/MANIFEST.MF file to figure out what the classpath is like, and what the value of Main-Class is. It seems to be running ReadCSVTest instead of ReadCSV.

Answer 2

Your JAR file includes foo/ReadCSV.class, but your MainClass is set to foo.ReadCSV Test . You'll need to fix your Main-Class attribute in META-INF/MAINIFEST.MF