java获取配置文件.properties中的数据，具体内容如下所示：
方法太多，只写一种比较简单的。
文件test1.properties内容
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test1 = 123;test2=3211 properties prop = new properties(); prop.load(new fileinputstream("src/test1.properties")); system.out.println(prop.get("test1")); |
输出
123;1
简单封装一下，完整代码
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package propertis.test;import java.io.fileinputstream;import java.io.filenotfoundexception;import java.io.ioexception;import java.util.properties;public class test { /** * @param args * @throws ioexception * @throws filenotfoundexception */ public static void main(string[] args) throws filenotfoundexception, ioexception { // todo auto-generated method stub properties prop = new properties(); prop.load(new fileinputstream("src/test1.properties")); system.out.println(prop.get("test1")); system.out.println(proutil.gettest1value("test1")); system.out.println(proutil.gettest1value("test2")); }}class proutil{ private static properties prop = new properties(); static{ try { prop.load(new fileinputstream("src/test1.properties")); } catch (filenotfoundexception e) { // todo auto-generated catch block e.printstacktrace(); } catch (ioexception e) { // todo auto-generated catch block e.printstacktrace(); } } public static object gettest1value(string key){ return prop.get(key); }} |
输出
123;
123;
321
下面看下java 读取properties配置文件
方法：
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properties properties = new properties();fileinputstream in = new fileinputstream("**.properties");properties.load(in);in.close(); |
配置文件：
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driver=com.mysql.jdbc.driverurl=jdbc:mysql://localhost:3306/test?useunicode=true&characterencoding=utf-8username=rootpassword= |
代码实现：
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import java.io.fileinputstream;import java.util.properties;public class propertiestest { private static final string properties_name = "db.properties"; public static string db_driver = null; public static string db_url = null; public static string db_user = null; public static string db_pwd = null; static{ fileinputstream in = null; try{ properties properties = new properties(); in = new fileinputstream(properties_name); properties.load(in); db_driver = properties.getproperty("driver"); db_url = properties.getproperty("url"); db_user = properties.getproperty("username"); db_pwd = properties.getproperty("passworld"); system.out.println("读取配置信息成功！"); showconfig(); }catch(exception e){ e.printstacktrace(); system.out.println("读取配置信息失败！"); }finally{ if(in != null){ try{ in.close(); }catch(exception e){ e.printstacktrace(); } } } } private static void showconfig(){ system.out.println("-----------------------配置信息-----------------"); system.out.println("dirver: "+db_driver); system.out.println("url: "+db_url); system.out.println("user: "+db_user); system.out.println("passworld: "+db_pwd); system.out.println("----------------------------------------------"); } public static void main(string[] args){ }} |
运行结果：
读取配置信息成功！
-----------------------配置信息-----------------
dirver: com.mysql.jdbc.driver
url: jdbc:mysql://localhost:3306/test?useunicode=true&characterencoding=utf-8
user: root
passworld: null
----------------------------------------------
总结
以上所述是小编给大家介绍的java 读取、获取配置文件.properties中的数据，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：https://blog.csdn.net/nayi_224/article/details/82734332
