package com.hspedu.io_;

import org.junit.Test;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class TestReadProperties {

    @Test
    public void readPropertiesFile() throws IOException {
        String filePath = "src\\test.properties";
        BufferedReader bufferedReader 
 
= new BufferedReader(new FileReader(filePath));
        String lineData = "";
        while ((lineData = bufferedReader.readLine()) != null) {
            String[] split = lineData.split("=");
            System.out.print("split[0] = " + split[0]);
            System.out.println("\t split[1] = " + split[1]);
        }
    }
}
 

package com.hspedu.io_;

import org.junit.Test;

import java.io.FileReader;
import java.io.IOException;
import java.util.Properties;

public class TestReadProperties {

    @Test
    public void readPropertiesFile() throws IOException {
        String filePath = "src\\test.properties";
        Properties properties 
 
= new Properties();
        properties.load(new FileReader(filePath));

        System.out.println(properties.get("user"));
        System.out.println(properties.get("password"));
    }
}

1、properties檔案格式：key=value，例如user=root，等號左右沒有空格；

2、Properties物件的get方法獲取value值，properties.get("xxx");