java 操作Properties文件查询与添加修改 io 读写

实例截图：

实例代码

package com.util;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.Properties;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
/**
 * 操作Properties文件 io读写
 * @author yushen
 *
 */
public class TestProperties {
	
	/**
	 * 测试Properties
	 * @param args
	 */
	public static void main(String[] args) {
		//获取系统路径
		String FileUrl = System.getProperty("user.dir")+"/src/config/csd.properties";
		
		//如果已经有了key 会替换之前的key value
		String key = "jdbc";
		String value = "oracle:1521";
		String notes = "00几数据库配置文件！";
		int cbo = putPropertiesKeyValue(FileUrl, key, value, notes);
		System.out.println("数据添加"+(cbo == 0 ? "成功！" : "失败！"));
		
		String QueryValue = getPropertiesValueID(FileUrl,key);
		System.out.println("返回的"+key+"字段查询数据为："+QueryValue);
		
		JSONObject jo = getPropertiesValueAll(FileUrl);
		System.out.println("返回的全部数据是："+jo);
		
	}
	
	/**
	 * 给Properties文件添加数据
	 * @param Url 		文件路径
	 * @param key 		添加字段key
	 * @param value		添加字段value
	 * @param Notes		添加字段注释
	 * @return 			返回0成功，返回1失败
	 */
	public static int putPropertiesKeyValue(String Url,String key,String value,String Notes){
		int retBoo = 0;
		Properties prop = new Properties();
		try {
			FileOutputStream oFile = new FileOutputStream(Url, true);
			prop.setProperty(key, value);
			prop.store(oFile, Notes);
			oFile.close();
			retBoo = 0;
		} catch (Exception e) {
			System.out.println(e);
			retBoo = 1;
		}
		return retBoo;
	}
	
	/**
	 * 单独查询Properties文件的某个key 返回String
	 * @param Url
	 * @param key
	 * @return String
	 */
	public static String getPropertiesValueID(String Url,String key){
		String restValue = "";
		Properties prop = new Properties();
		try {
			InputStream in = new BufferedInputStream(new FileInputStream(Url));
			prop.load(in); 
			restValue = prop.getProperty(key);
		}catch (Exception e) {
			System.out.println(e);
		}
		return restValue;
	}
	
	/**
	 * 查询Properties文件所有内容
	 * @param Url
	 * @return JSONObject
	 */
	public static JSONObject getPropertiesValueAll(String Url){
		JSONObject jo = new JSONObject();
		Properties prop = new Properties();
		try {
			InputStream in = new BufferedInputStream(new FileInputStream(Url));
			prop.load(in); 
			Iterator<String> it = prop.stringPropertyNames().iterator();
			while (it.hasNext()) {
				String key = it.next();
				jo.put(key, prop.getProperty(key));
			}
			in.close();
		}catch (Exception e) {
			System.out.println(e);
		}
		return jo;
	}
}