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javaoutputtostringjooqpojo

How to remove POJO class name from the output string?

I have below POJO

package com.beans.test;

import lombok.Data;

@Data
public class Person {

    private int id;

    private String name;

    private Integer age;

    private Boolean isEmployed;

    private String address;

}

Query to fetch Person info

public class testTable {

public Person getPersonInfo(final int id) {

return dsl.select(PERSON_INFO.NAME,
                  PERSON_INFO.AGE,
                  PERSON_INFO.IS_EMPLOYED,
                  PERSON_INFO.ADDRESS)
          .from(PERSON_INFO)
          .where(PERSON_INFO.ID.equals(id))
          .fetchOneInto(Person.class)
}
}

I need to print the output of the query as string.

Person person = testTable.getPersonInfo(id);
String personInfo = person.toString();
System.out.println("personInfo = ", personInfo);

Output :- personInfo = Person(name=TestName,age=TestAge,isEmployed=true,address=TestAddress)

Desired Ouput :- personInfo = name=TestName,age=TestAge,isEmployed=true,address=TestAddress

How can I remove the POJO class name from the desired output string ?(As shown in the Desired Output)

Solution

  • My solution

    package com.company;

import lombok.Data;

public class Main {

    @Data
    public static class Person {

        private int id;

        private String name;

        private Integer age;

        private Boolean isEmployed;

        private String address;

    }

    public static String getClassName(Class clazz){
        if(clazz.getDeclaringClass() == null)
        {
            return clazz.getSimpleName();
        }
        return getClassName(clazz.getDeclaringClass()) + "." + clazz.getSimpleName(); //Recursive - complete class name.
    }

    public static String toStringRemovingClassName(Object obj)
    {
        String pattern = String.format("^%s\\(|\\)$", getClassName(obj.getClass())); //Matches "<ClassName>(" at begin or ")" at end.
        return obj.toString().replaceAll(pattern, "");
    }

    public static void main(String[] args) {
        var person = new Person();
        System.out.println("personInfo = " + toStringRemovingClassName(person));
        person.id = 1;
        person.address = "\"952 NW 80th St, Miami, FL 33150\"";
        person.name = "Jeff";
        person.age = 30;
        person.isEmployed = true;

        System.out.println("personInfo = " + toStringRemovingClassName(person));
    }
}

    Output

    personInfo = id=0, name=null, age=null, isEmployed=null, address=null
personInfo = id=1, name=Jeff, age=30, isEmployed=true, address="952 NW 80th St, Miami, FL 33150"

    output