静态初始化器中的异常处理

public class StaticInitializerExample {
    private static final String CONFIG_FILE = "config.properties";
    private static Properties properties;

    static {
        try {
            properties = new Properties();
            properties.load(new FileInputStream(CONFIG_FILE));
        } catch (FileNotFoundException e) {
            System.err.println("配置文件未找到: " + CONFIG_FILE);
            e.printStackTrace();
        } catch (IOException e) {
            System.err.println("读取配置文件时发生错误: " + CONFIG_FILE);
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        // 使用 properties 变量
        System.out.println(properties.getProperty("key"));
    }
}

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class StaticInitializerExample {
    private static final Logger logger = LoggerFactory.getLogger(StaticInitializerExample.class);
    private static final String CONFIG_FILE = "config.properties";
    private static Properties properties;

    static {
        properties = new Properties();
        try {
            properties.load(new FileInputStream(CONFIG_FILE));
        } catch (FileNotFoundException e) {
            logger.error("配置文件未找到: {}", CONFIG_FILE, e);
            properties.setProperty("key", "default_value"); // 设置默认值
        } catch (IOException e) {
            logger.error("读取配置文件时发生错误: {}", CONFIG_FILE, e);
            properties.setProperty("key", "default_value"); // 设置默认值
        }
    }

    public static void main(String[] args) {
        System.out.println(properties.getProperty("key"));
    }
}