CODEWITHSUNDEEP
java
vico
vico

Reputation: 18171

Space character without "\" in properties file keys

I reed properties file:

InputStream input = new FileInputStream("data.ini");
Reader reader = new InputStreamReader(input, Charset.forName("UTF-8"));
Properties prop = new Properties();
prop.load(reader);

My properties file Key contains space and I need to put \ character to read it correctly. Is it possible somehow not place \ character in properties file and read it in correct way?

Properties file content:

aaa\ bbb=0

Upvotes: 2

Views: 2583

Answers (4)

hack_on
hack_on

Reputation: 2520

It is not as clean as using the built in reader, but it is possible with the following code.

public static Properties load(File file) throws IOException {
    InputStream input = new FileInputStream(file);
    Reader reader = new InputStreamReader(input, StandardCharsets.UTF_8);
    Properties p;
    try (BufferedReader br = new BufferedReader(reader)) {
        p = new Properties();
        String line;
        while ((line = br.readLine()) != null) {
            int index = line.indexOf('=');
            if (index > 0) {
                String key = line.substring(0, index).trim();
                String value = line.substring(index + 1).trim();
                p.put(key, value);
            }
        }
    }
    return p;
}

Upvotes: 1

WIlfinity
WIlfinity

Reputation: 1025

It is possible to load properties from an XML file also... makes for neater code.

properties.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>
    <comment>Sample Properties file in XML</comment>
    <entry key="PropertyWithoutSpaces">Property value</entry>
    <entry key="Property With Spaces">Property value</entry>
</properties>

PropertyTest.java:

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

public class PropertyTest {

    public static void main(String[] args) throws IOException {
        Properties properties = new Properties();
        properties.loadFromXML( new FileInputStream("properties.xml") );

        System.out.println( properties.getProperty("Property With Spaces") );
        System.out.println( properties.getProperty("PropertyWithoutSpaces") );
    }

}

Upvotes: 0

Zia
Zia

Reputation: 1011

you can escape every thing in properties file with Java Unicode, \u0020 for whitespace,use it your problem will get solve.

Upvotes: 1

Betlista
Betlista

Reputation: 10549

As described in load JavaDoc:

The key contains all of the characters in the line starting with the first non-white space character and up to, but not including, the first unescaped '=', ':', or white space character other than a line terminator.

So the answer is no.

Typically keys contain other separator, my experience is that '.' is used.

aaa.bbb=0

Upvotes: 2

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