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.driver url=jdbc:mysql: //localhost:3306/test?useunicode=true&characterencoding=utf-8 username=root password= |
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网站的支持！
原文链接：https://blog.csdn.net/nayi_224/article/details/82734332
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