获取资源文件*.properties的信息

user.properties

username = Peter
password = 123456
age = 30
job = CTO

Test.java

package cn.itcast.demo.test;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

public class Test {
	public static void main(String[] args) {
		String filename = "G:\\Test\\Demo\\bin\\user.properties";
		String username = getValueByKey(filename, "username");
		String password = getValueByKey(filename, "password");
		String job = getValueByKey(filename, "job");
		Integer age = Integer.parseInt(getValueByKey(filename, "age"));
		
		System.out.println(username + "\n" + password + "\n" + job + "\n" + age);
	}

	public static String getValueByKey(String filename, String key) {
		Properties ps = new Properties();
		InputStream is = null;
		try {
			is = new BufferedInputStream(new FileInputStream(filename));
			ps.load(is);
			String value = ps.getProperty(key);
			return value;
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		} finally {
			if (is != null) {
				try {
					is.close();
					is = null;
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}
}

 

结果:

Peter
123456
CTO
30