java 如何解析属性文件中的属性值
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How to parse property value in properties file
提问by giri
Hi I am loading a property file to establish DB connection, ex:
嗨，我正在加载一个属性文件来建立数据库连接，例如：
DB1="JDBc................", username , password
above line is as in property file, but when i call getConnection method I need to send url, username and pw. How can I parse it.
上面的行与属性文件中的一样，但是当我调用 getConnection 方法时，我需要发送 url、用户名和密码。我该如何解析它。
回答by ChadNC
You can put your key/value pairs in a properties file like this:
您可以将键/值对放在属性文件中，如下所示：
dbUrl = yourURL
username = yourusername
password = yourpassword
Then you can load them into your app from the properties file:
然后您可以从属性文件将它们加载到您的应用程序中：
private void loadProps() {
try {
InputStream is = getClass().getResourceAsStream("database_props.properties");
props = new Properties();
props.load(is);
is.close();
dbConnStr = props.getProperty("dbUrl");
username = props.getProperty("username");
password = props.getProperty("password");
}
catch(IOException ioe) {
log.error("IOException in loadProps");
for(StackTraceElement ste : ioe.getStackTrace())
log.error(ste.toString());
}
}
And then you can use those values to create your connection.
然后您可以使用这些值来创建您的连接。
回答by Nivas
You can split the entry:
String dbProperty = prop.getProperty("DB1"); String[] dbDetails = dbProperty.split(",", 3);
您可以拆分条目：
String dbProperty = prop.getProperty("DB1"); String[] dbDetails = dbProperty.split(",", 3);
dbDetails[0]will hold your JDBC..., [1]your usernameand [2]your password
dbDetails[0]将举行你的JDBC...，[1]你的username和[2]你的password
Better still, you might want to hold them in different properties (As lweller said)
db.username = scott db.password = tiger db.url = ....
更好的是，您可能希望将它们保存在不同的属性中（正如 lweller 所说）
db.username = scott db.password = tiger db.url = ....
This way you get better clarity and control.
通过这种方式，您可以获得更好的清晰度和控制力。
回答by fmucar
It is better to define separately
最好分开定义
dburl =....
username =....
password = ...
Still if you want to parse it, you can use the split method of string to split by comma
还是要解析的话，可以使用string的split方法进行逗号分割
