I have one utility class where i have one method which requires username and password to connect other url. I need to kept that username in properties file so that i can change
In you Utility
class you can have a setter method to set the properties and then you can use MethdInvokingFactoryBean
.
class Utility{
static String username;
static String password;
public static setUserNameAndPassword(String username, String password){
Utility.username = username;
Utility.password = password;
}
//other stuff
}
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath*:/myservice_detaults.properties</value>
<value>classpath*:/log4j.properties</value>
</list>
</property>
</bean>
<bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="staticMethod" value="foo.bar.Utility.setUserNameAndPassword"/>
<property name="arguments">
<list>
<value>${username}</value>
<value>${password}</value>
</list>
</property>
</bean>
Spring doesn't allow to inject values into non-final static fields but make your field private and it should works.
Or just
<bean id="constants" class="com.foo.constants.CommonConstants">
<property name="username" value="${username}"/>
</bean>
Try this : Make your class a Component
@Component
public class UserXXXUtils {
private static Integer trustXXXMask;
@Value("${trustXXXMask}")
public void setTrustXXXMask(Integer trustXXXMask) {
UserXXXUtils.trustXXXMask = trustXXXMask;
}
//Access anywhere in the class
}
Read property value from properties file in static field of class using Java based spring configuration.
Example :
// The property file to store fields.
user.properties
username=Elijah Wood
age=26
language=English
// This class holds the static values
package org.javahive.propertyreader.example;
public class UserDetails {
static String username;
static String age;
static String language;
public static void setUserValues(String username, String age, String language) {
UserDetails.username = username;
UserDetails.age = age;
UserDetails.language = language;
}
}
//Spring configuration class
package org.javahive.propertyreader.example;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.MethodInvokingFactoryBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
@Configuration
@ComponentScan(value = { "org.javahive.propertyreader.example" })
@PropertySource("classpath:user.properties")
public class PropertyReaderConfig {
@Value("${user}")
private String username;
@Value("${age}")
private String age;
@Value("${language}")
private String language;
@Bean
public static PropertySourcesPlaceholderConfigurer propertyConfigIn() {
return new PropertySourcesPlaceholderConfigurer();
}
@Bean
public MethodInvokingFactoryBean methodInvokingFactoryBean() {
MethodInvokingFactoryBean mifb = new MethodInvokingFactoryBean();
mifb.setStaticMethod("org.javahive.propertyreader.example.UserDetails.setUserValues");
mifb.setArguments(new String[] { this.username, this.age, this.language });
return mifb;
}
/**
* @return the name
*/
public String getName() {
return username;
}
/**
* @param name
* the name to set
*/
public void setName(String name) {
this.username = name;
}
/**
* @return the age
*/
public String getAge() {
return age;
}
/**
* @param age
* the age to set
*/
public void setAge(String age) {
this.age = age;
}
/**
* @return the language
*/
public String getLanguage() {
return language;
}
/**
* @param language
* the language to set
*/
public void setLanguage(String language) {
this.language = language;
}
}
//The main class.
package org.javahive.propertyreader.example;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
public class Main {
public static void main(String[] args) {
ApplicationContext context = new AnnotationConfigApplicationContext(PropertyReaderConfig.class);
System.out.println("User Name : " + UserDetails.username);
System.out.println("Age : " + UserDetails.age);
System.out.println("Language : " + UserDetails.language);
}
}
Or using the @Value
over the non-static setter method for username
eg.
@Value("${app.username}")
public void setUserName(String userName) {
UtilityClass.userName = userName;
}