文件结构

代码部分

import java.util.ResourceBundle;

/**
 * @Author:romulushe
 * @Date:2022/11/9-11-09-9:18
 * @Description:PACKAGE_NAME
 * @version:1.0
 */
public class read_config_test {
    public static String getConfigFileParamVal(String paramName) {
        ResourceBundle resource = ResourceBundle.getBundle("aliyun_oss");
        String value = "";
        try {
            value = resource.getString(paramName);
        } catch (Exception e) {
            // TODO: handle exception
            System.out.println(e.getMessage());
        }
        return value;
    }
    public static void main(String[] args) {
        String c = read_config_test.getConfigFileParamVal("bucket_name");
        System.out.println(c);
        c = read_config_test.getConfigFileParamVal("endpoint");
        System.out.println(c);

    }
}

运行结果

优化升级

读取列表并输出

文件结构

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * @Author:romulushe
 * @Date:2022/11/9-11-09-10:44
 * @Description:PACKAGE_NAME
 * @version:1.0
 */

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class read_config_list_test {
    public static void main(String[] args) {
        String temp=System.getProperty("user.dir");
//        System.out.println(temp);
        //获取当前的目录的。当前目录到  哪一个级别。后面需要继续连接上的。
        String filename =temp+"\\src\\sensor.properties";
//        System.out.println(filename);
        try {
            List list1 = readByJavaClassic(filename);
            System.out.println(list1);
            list1.forEach(System.out::println);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static List readByJavaClassic(String fileName) throws IOException {

        List<String> result = new ArrayList<>();
        BufferedReader br = null;

        try {

            br = new BufferedReader(new FileReader(fileName));

            String line;
            while ((line = br.readLine()) != null) {
                result.add(line);
            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (br != null) {
                br.close();
            }
        }

        return result;
    }

}

运行结果