Java基础-IO读取properties配置文件

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文件格式：key=value，例如user=root，等号左右没有空格；

2、Properties对象的get方法获取value值，properties.get("xxx");