求助，读property配置文件

[lenovo_itcast]

//a.property
rut.a=1
rut.b=2
rut.c=3

swt.a=11
swt.b=22
swt.c=33
swt.d=44


输入rut，返回[a,1,b,2,c,3]

返回值放在list里。

如何实现？？急等。。。。。

[huntor]

Properties p = new Properties();

p.load(new FileReader("a.properties"));
Object[] keys = p.keys();
ArrayList<String> results = new ArrayList<String>();
for(Object k : keys){
	String key = (String)k;
	if(key.startsWith("rut"){
			results.add(key.substring(4));
			results.add(p.getProperty(key));
		}
}

[Yokubee]

使用java.util.Properties
遍历a.properties文件找到含有rut的键，然后把键拆成你要的，最后把拆好的和对应的值放入list中
如遍历
Properties prop = new Properties();
prop.put(1, "a");
prop.put(2, "b");
Enumeration enums = prop.keys();
while (enums.hasMoreElements()) {
Object key = enums.nextElement();
System.out.println("key = " + key + " value = " + prop.get(key));
}

[huntor]

上面搞错了
[Quote=引用 1 楼 huntor 的回复:]
Java codeProperties p=new Properties();

p.load(new FileReader("a.properties"));
Enumeration<String> keys= p.keys();
ArrayList<String> results=new ArrayList<String>();
while(keys.hasMoreElements()){
String key= keys.nextElement();
if(key.startsWith("rut"){
results.add(key.substring(4));
results.add(p.getProperty(key));
}
}
[/Quote]

[若鱼1919]

public class TestProps {
	public static void main(String[] args)throws Exception {
		 Properties props=new Properties();
		 InputStream in=TestProps.class.getResourceAsStream("a.properties");
		 props.load(in);
		 String input="rut";
		 List result=new ArrayList();
		 Set set=props.keySet();
		 for(Iterator it=set.iterator();it.hasNext();){
			 String key=(String)it.next();
			 if(key.startsWith(input)){
				 result.add(key.split("\\.")[1]);
				 result.add(props.getProperty(key));
			 }
		 }
		 System.out.println(result);
	}
}

[tuerqizhou]

我这儿有我写的一个例子
你看看对你有用不？

package teststart.teststrartreader;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

public class TestProperty {
	Properties pro = new Properties();
	
	public TestProperty() {
		FileInputStream fis = null;
		try {
			fis = new FileInputStream("./config/config.ini");
			pro.load(fis);//通过输入流加载文件到属性集合里面
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	public String getValue(String key,String def){
		String value = pro.getProperty(key,def);
		return value;
	}
	
	private void setKeyValue(String key,String value) {
		pro.setProperty(key, value);
	}
	
	//输出到文件
	public void saveValue(){
		FileOutputStream fos = null;
		try {
			fos = new FileOutputStream("./config/config.ini");
			pro.store(fos, "comments");
			System.out.println("写入完成");
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		TestProperty test = new TestProperty();
		
		test.setKeyValue("username","zhoulei");
		test.setKeyValue("url","jdbc:oracle:thin:@127.0.0.1:1521:orcl");
		test.setKeyValue("password", "oracle");
		test.setKeyValue("driver", "oracle.jdbc.driver.OracleDriver");
		test.saveValue();
		
		String driver = test.getValue("driver", "def");
		String username = test.getValue("username", "zhoulei");
		String password = test.getValue("password", "oracle");
		String url = test.getValue("url", "oracle");
		
		try {
			Class.forName(driver);
			Connection conn = DriverManager.getConnection(url, username, password);
			System.out.println("conn="+conn);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		

	}

}