json-lib过滤属性

依赖jar：

commons-beanutils-1.9.3.jar​

commons-collections-3.1.jar

commons-lang-2.4.jar

commons-logging-1.2.jar

ezmorph-1.0.6.jar

json-lib-2.4-jdk15.jar

 

直接上程序

1、Person.java:

import java.util.List;

/**
 * Created by Administrator on 2017/5/6.
 */
public class Person {
    private int id;
    private String name;
    private List<Address> addresses;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public List<Address> getAddresses() {
        return addresses;
    }

    public void setAddresses(List<Address> addresses) {
        this.addresses = addresses;
    }

    @Override
    public String toString() {
        return "Person{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", addresses=" + addresses +
                '}';
    }
}

2、Address.java:

public class Address {
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Address{" +
                "name='" + name + '\'' +
                '}';
    }
}

3、测试程序

Person person = new Person();
person.setId(1);
person.setName("xiaoming");
List<Address> addresses = new ArrayList<Address>();
Address address = new Address();
address.setName("xian");
addresses.add(address);
person.setAddresses(addresses);

//设置过滤字段  方法1 使用setJsonPropertyFilter

JsonConfig jsonConfig = new JsonConfig();
PropertyFilter filter = new PropertyFilter() {
    //参数1：person对象  如果有两个fieldName都是name，则都会被过滤，无法精确控制
    public boolean apply(Object object, String fieldName, Object fieldValue) {
        return fieldName.equals("name");
    }
};
jsonConfig.setJsonPropertyFilter(filter);
System.out.println(JSONObject.fromObject(person, jsonConfig).toString());

//方法2  过滤id

jsonConfig.setExcludes(new String[]{"id"}); //java

说明：
这两这种方法，如果出现多个相同属性，设置了过滤后，会全部过滤掉，无法精确控制具体哪一个属性。