使用properties配置文件

来源：互联网发布：软件开发公司排名编辑：程序博客网时间：2024/05/24 01:47

1.读取配置文件，配置文件的命名需与类名相同，也可以写死，但要与类在同一目录下。
这里写图片描述

public class MyProperties extends Properties {    private static final long serialVersionUID = -2189089546796878893L;    public MyProperties(@SuppressWarnings("rawtypes") Class clazz) throws IOException {        String invokeClassShortName = clazz.getSimpleName();        String propertiesFileName = invokeClassShortName + ".properties";        InputStreamReader reader = new InputStreamReader(clazz.getResourceAsStream(propertiesFileName));        this.load(reader);    }    public String getString(String key) {        Object obj = getProperty(key);        return (String)obj;    }}

2抽象类调用方继承该抽象类

public abstract class PropertiesUtils4Test {    protected MyProperties rb;    public PropertiesUtil(){        String className = this.getClass().getName();        try {            rb = new MyProperties(getClass());        } catch (Exception mre) {            System.out.println("No resource bundle found for: " + className);        }    }    //利用java反射原理，将配置文件的值复制到对象中    protected void populate()  {        if (rb == null) return ;        try {        BeanUtils.copyProperties(this, rb);        } catch (IllegalAccessException e) {            e.printStackTrace();        } catch (InvocationTargetException e) {            e.printStackTrace();        }    }}

3.`使用时继承PropertiesUtil 类
public class TestProperies extends PropertiesUtils4Test {

@Testpublic void testStart() throws Exception{    String id= rb.getString("flowNoForCommit");    System.out.println(id);    testEntity t = new testEntity();    t.load();    System.out.println(t.toString());}

}

4.测试用java反射的实体类

public class testEntity extends PropertiesUtils4Test{    public String productNoForInit;    public String getProductNoForInit() {        return productNoForInit;    }    public void setProductNoForInit(String productNoForInit) {        this.productNoForInit = productNoForInit;    }    @Override    public String toString() {        return "testEntity [productNoForInit=" + productNoForInit + "]";    }    public void load() {        super.populate();    }}

0 0