Using Load Time Logging

The best way to demonstrate the mObg3n load time logging is by example.

For this example we need the following libraries from the package:

• logger-loadtime-aspect-1.0.0.0-jar-with-dependencies.jar

• aspectjweaver-1.6.12.jar (i.e. from the dependencies folder)

Also we need two mandatory configuration files below to be available in the Java classpath:

• logger-aspect-context.xml (i.e. check the attachments.)

• log4j.properties (i.e. if not yet available in the project we can check the attachments.)

If everything is ready we can now make our hands dirty.

1 Create a folder where all of the items need libraries and configuration files are placed.

2 Two java classes that don't have any logging information.

PersonBean class (i.e. included in the attached sample-classes.tar.gz.)

---

package org.sample.logger.bean;

public class PersonBean {

private String firstName;
private String middleName;
private String lastName;

public String getFirstName() {
return firstName;
}

public void setFirstName(String firstName) {
this.firstName = firstName;
}

public String getMiddleName() {
return middleName;
}

public void setMiddleName(String middleName) {
this.middleName = middleName;
}

public String getLastName() {
return lastName;
}

public void setLastName(String lastName) {
this.lastName = lastName;
}

public String getFullName() {
return new StringBuilder(lastName.toUpperCase()).append(", ")
.append(firstName.toUpperCase()).append(" ")
.append(middleName.toUpperCase()).toString();
}

public String toString() {
return getFullName();
}

}

---

SampleApp class (i.e. included in the attached sample-classes.tar.gz.)

---

package org.sample.logger.app;

import org.sample.logger.bean.PersonBean;

public class SampleApp {
public static void main(String[] args) {
PersonBean person = new PersonBean();

   person.setFirstName("FirstName");
   person.setLastName("LastName");
   person.setMiddleName("MiddleName");

   System.out.println("Person=" + person);

}
}

---

3 Compile all the classes.
4 Run it with the command below:

---

java -javaagent:aspectjweaver-1.6.12.jar -cp .:logger-loadtime-aspect-1.0.0.0-jar-with-dependencies.jar org.sample.logger.app.SampleApp

---

The output must be something similar to this if we use the attached log4j.properties:

See also [Refining Target Methods]