正确使用Apache Commons配置

Question

我的代码如下:

package org.minuteware.jgun;

import org.apache.commons.configuration.*;

class ConfigReader {
    public void getconfig() {
        Configuration config;
        try {
            config = new PropertiesConfiguration("gun.conf");
        } catch (ConfigurationException e) {
            e.printStackTrace();
        }
        String day = config.getString("sync_overlays");
        System.out.println(day);
    }
}

Eclipse在此代码中存在两个问题:

1. 对于package org.minuteware.jgun;它说的线The type org.apache.commons.lang.exception.NestableException cannot be resolved. It is indirectly referenced from required .class files
2. 对于} catch (ConfigurationException e) {它说的线No exception of type ConfigurationException can be thrown; an exception type must be a subclass of Throwable

我在Java中发现了ConfigurationException？,但提供的解决方案没有帮助.

Answer 1

Apache Commons Configuration的核心具有以下运行时依赖性:

• Apache Commons Lang(版本2.2,2.3,2.4,2.5或2.6)
• Apache Commons Collections(版本3.1,3.2或3.2.1)
• Apache Commons Logging(版本1.0.4,1.1或1.1.1)

也可以将它们放在类路径中.您的特定问题是由缺少Lang依赖性引起的.