How to load the bean XML file from another jar using ClassLoader

Question

I need to load the bean XML files which is located inside another Jar file using ClassLoader. Can anyone help me here.

Answer 1

There are two ways to read files in other jars. These ways are suitable to application in jar mode. Please see below sample. I just read thymeleaf.properties in thymeleaf.jar file.

1. using jdk ClassLoader
2. using spring PathMatchingResourcePatternResolver

import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;


public class MyService  {

    public static void printInfo() throws Exception {
        InputStream fis = MyService.class.getClassLoader().getResourceAsStream("org/thymeleaf/thymeleaf.properties");
        BufferedReader br = new BufferedReader(new InputStreamReader(fis));
        String s = "";
        while ((s = br.readLine()) != null){
            System.out.println(s);
        }
        br.close();

        PathMatchingResourcePatternResolver patternResolver = new PathMatchingResourcePatternResolver();
        Resource[] resources = patternResolver.getResources("org/thymeleaf/thymeleaf.properties");
        if (resources != null && resources.length > 0) {
            br = new BufferedReader(new InputStreamReader(resources[0].getInputStream()));
            s = "";
            while ((s = br.readLine()) != null){
                System.out.println(s);
            }
            br.close();
        }

    }

    public static void main(String[] args) throws Exception {
        printInfo();
    }
}