CODEWITHSUNDEEP
java
Metadata
Metadata

Reputation: 2083

How to load properties file into Java?

I am trying to load a properties file into Java present on linux dir. connection.properties:

hiveDriver=HiveDriver
hiveServer=ip-1-2-1-1.
hivePort=123
hiveUser=huser
hivePassword=etl123
gpDriver=org.postgresql.Driver
metaStoreUrl=metaurl
port=5432
metaUser=devusr
metaPassword=abcdefg
gpAnalyticsServer=1.2.3.4.5
gpUser=gpuser
gpPassword=09987665

Code:

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

try {
    Properties props = new Properties();
    String propFile  = "/home/devuser/connection.properties";
    InputStream inputStream = StartCount.class.getClassLoader().getResourceAsStream(propFile);
    if(inputStream != null) {
        props.load(inputStream);
    }
    String hiveDriver           = props.getProperty("hiveDriver");
    String hiveServer           = props.getProperty("hiveServer");
    String hivePort             = props.getProperty("hivePort");
    String hiveUser             = props.getProperty("hiveUser");
    String hivePassword         = props.getProperty("hivePassword");
    String gpDriver             = props.getProperty("gpDriver");
    String hiveMetaStoreServer  = props.getProperty("hiveMetaStoreServer");
    String port                 = props.getProperty("port");
    String hiveMetaUser         = props.getProperty("hiveMetaUser");
    String hiveMetaPassword     = props.getProperty("hiveMetaPassword");
    String gpAnalyticsServer    = props.getProperty("gpAnalyticsServer");
    String gpUser               = props.getProperty("gpUser");
    String gpPassword           = props.getProperty("gpPassword");
    System.out.println(hiveDriver)      ;
    System.out.println(hiveServer);
    System.out.println(hivePort);
    System.out.println(hiveUser);
    System.out.println(hivePassword);
    System.out.println(gpDriver);
    System.out.println(hiveMetaStoreServer);
    System.out.println(port);
    System.out.println(hiveMetaUser);
    System.out.println(hiveMetaPassword);
    System.out.println(gpAnalyticsServer);
    System.out.println(gpUser);
    System.out.println(gpPassword); 
} catch(Exception e) {
    e.printStackTrace();
}

I am submitting the jar from the same place where "connection.properties" is saved. When I run the code, I see null printing from the println statements. Could anyone let me know what is the mistake I did in the code above ?

Upvotes: 0

Views: 132

Answers (3)

hovanessyan
hovanessyan

Reputation: 31473

Using NIO2 you can load the file (if you have the read permissions) and convert it to InputStream like:

Path path = Paths.get("/home/devuser/connection.properties");
InputStream str = Files.newInputStream(path);

Upvotes: 0

Wulf
Wulf

Reputation: 712

InputStream inputStream = new FileInputStream(propFile);

Thats it...

Because

StartCount.class.getClassLoader().getResourceAsStream(propFile) != propFile

Upvotes: 1

Guilherme Alencar
Guilherme Alencar

Reputation: 1403

Your problem is the path, try to replace for this:

String propFile  = "./connection.properties";

Upvotes: 0

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