Java 讀取、獲取配置文件.properties中的數(shù)據(jù)
java獲取配置文件.properties中的數(shù)據(jù),具體內(nèi)容如下所示:
方法太多,只寫一種比較簡單的。
文件test1.properties內(nèi)容
test1 = 123;
test2=3211
Properties prop = new Properties();
prop.load(new FileInputStream("src/test1.properties"));
System.out.println(prop.get("test1"));
輸出
123;1
簡單封裝一下,完整代碼
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);
}
}
輸出
123;
123;
321
下面看下Java 讀取Properties配置文件
方法:
Properties properties = new Properties();
FileInputStream in = new FileInputStream("**.properties");
properties.load(in);
in.close();
配置文件:
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8 username=root password=
代碼實現(xiàn):
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("讀取配置信息成功!");
showConfig();
}catch(Exception e){
e.printStackTrace();
System.out.println("讀取配置信息失?。?);
}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){
}
}
運行結(jié)果:
讀取配置信息成功!
-----------------------配置信息-----------------
dirver: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
user: root
passworld: null
----------------------------------------------
總結(jié)
以上所述是小編給大家介紹的Java 讀取、獲取配置文件.properties中的數(shù)據(jù),希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時回復(fù)大家的。在此也非常感謝大家對腳本之家網(wǎng)站的支持!
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