Implementing Static Filtering for RESTful Services
>> Create a Spring Starter Project
>> add springboot web dependency
>> add springboot developertools

FilteringController.java
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.RestController;  
@RestController  
public class FilteringController   
{  
@RequestMapping("/filtering")  
public SomeBean retrieveSomeBean()  
{  
return new SomeBean("Amit", "78989", "39000");  
}  
}  

SomeBean.java
import com.fasterxml.jackson.annotation.JsonIgnore;  
public class SomeBean   
{  
private  String name;  
private  String phone;  
@JsonIgnore  
private  String salary;  
//generating constructor  
public SomeBean(String name, String phone, String salary)   
{  
this.name = name;  
this.phone = phone;  
this.salary = salary;  
}  
public String getName()   
{  
return name;  
}  
public void setName(String name)   
{  
this.name = name;  
}  
public String getPhone()   
{  
return phone;  
}  
public void setPhone(String phone)   
{  
this.phone = phone;  
}  
public String getSalary()   
{  
return salary;  
}  
public void setSalary(String salary)   
{  
this.salary = salary;  
}  
}  






Open POSTMAN 
GET       http://localhost:8080/filtering


Question 
Create a Bean Class  Student having roll, name , and p, c,m marks..
Print the details of student excluding p,c,m marks.


















Dynamic Filtering
import com.fasterxml.jackson.annotation.JsonFilter;

@JsonFilter("SomeBeanFilter")
public class SomeBean {

    private String name;
    private String phone;
    private String salary;

    public SomeBean(String name, String phone, String salary) {
        this.name = name;
        this.phone = phone;
        this.salary = salary;
    }

    public String getName() {
        return name;
    }

    public String getPhone() {
        return phone;
    }

    public String getSalary() {
        return salary;
    }
}

FilteringController.java
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.fasterxml.jackson.databind.ser.FilterProvider;
import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
import org.springframework.http.converter.json.MappingJacksonValue;

@RestController
public class FilteringController {

    @GetMapping("/filtering-dynamic")
    public MappingJacksonValue retrieveSomeBean() {

        SomeBean someBean =
                new SomeBean("Amit", "7898939000", "50000");

        // Define which fields to include
        SimpleBeanPropertyFilter filter =
                SimpleBeanPropertyFilter.filterOutAllExcept("name", "phone");

        FilterProvider filters =
                new SimpleFilterProvider().addFilter("SomeBeanFilter", filter);

        MappingJacksonValue mapping = new MappingJacksonValue(someBean);
        mapping.setFilters(filters);

        return mapping;
    }
}