【转】JSON Lib 修改字段名称

【转】http://blog.csdn.net/zhangzeyuaaa/article/details/49914761

package com.zzj.jsonlib;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.processors.PropertyNameProcessor;

import com.zzj.jsonlib.vo.User;
import com.zzj.jsonlib.vo.user.Address;
import com.zzj.jsonlib.vo.user.Order;

/**
 * 使用PropertyNameProcessor处理属性首字母为大写的情况
 * @author lenovo
 *
 */
public class PropertyNameProcessorTest {
    public static void main(String[] args) {
        User user = new User("001", "123");
        List<Order> orderList = new ArrayList<Order>();
        Order order = new Order();
        Address address = new Address();
        address.setState("YN");
        order.setAddress(address);
        order.setOID("123");
        order.setOrderStatus("shipped");
        orderList.add(order);
        user.setOrderList(orderList);

        JsonConfig jsonConfig = new JsonConfig();
        PropertyNameProcessor propertyNameProcessor = new PropertyNameProcessor() {
            @Override
            public String processPropertyName(Class target, String fieldName) {
                System.out.println(target);
                System.out.println(fieldName);
                return fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);
            }
        };
        jsonConfig.registerJsonPropertyNameProcessor(User.class, propertyNameProcessor);
        jsonConfig.registerJsonPropertyNameProcessor(Order.class, propertyNameProcessor);
        jsonConfig.registerJsonPropertyNameProcessor(Address.class, propertyNameProcessor);

        JSONObject jsonObject = JSONObject.fromObject(user, jsonConfig);
        String jsonStr = jsonObject.toString();
        System.out.println(jsonStr);

        System.out.println("-----------------------------------------------------");

        jsonObject = JSONObject.fromObject(jsonStr);
        jsonConfig = new JsonConfig();

        jsonConfig.setRootClass(User.class);

        Map<String, Class<?>> classMap = new HashMap<String, Class<?>>();
        classMap = new HashMap<String, Class<?>>();
        classMap.put("OrderList", Order.class);
        jsonConfig.setClassMap(classMap);

        propertyNameProcessor = new PropertyNameProcessor() {
            @Override
            public String processPropertyName(Class target, String elementName) {
                System.out.println(target);
                System.out.println(elementName);

                //处理第二个字母为大写的情况
                if (elementName.length() > 1) {
                    String secondChar = elementName.substring(1, 2);
                    if (secondChar.toUpperCase().equals(secondChar)) {
                        return elementName;
                    }
                }
                return elementName.substring(0, 1).toLowerCase() + elementName.substring(1);
            }
        };
        jsonConfig.registerJavaPropertyNameProcessor(User.class, propertyNameProcessor);
        jsonConfig.registerJavaPropertyNameProcessor(Order.class, propertyNameProcessor);
        jsonConfig.registerJavaPropertyNameProcessor(Address.class, propertyNameProcessor);

        user = (User) JSONObject.toBean(jsonObject, jsonConfig);
        System.out.println(user);
    }
}

User：

package com.zzj.jsonlib.vo;

import java.util.List;

import com.zzj.jsonlib.vo.user.Order;

public class User {
    private String Username;
    private String Password;

    private List<Order> OrderList;

    public User() {
    }

    public User(String username, String password) {
        Username = username;
        Password = password;
    }

    public String getUsername() {
        return Username;
    }

    public void setUsername(String username) {
        Username = username;
    }

    public String getPassword() {
        return Password;
    }

    public void setPassword(String password) {
        Password = password;
    }

    public List<Order> getOrderList() {
        return OrderList;
    }

    public void setOrderList(List<Order> orderList) {
        OrderList = orderList;
    }

    @Override
    public String toString() {
        return "User [Username=" + Username + ", Password=" + Password
                + ", OrderList=" + OrderList + "]";
    }


}

 

Order：

package com.zzj.jsonlib.vo.user;

public class Order {
    private String OID;
    private String OrderStatus;
    private Address Address;

    public String getOID() {
        return OID;
    }

    public void setOID(String oID) {
        OID = oID;
    }

    public String getOrderStatus() {
        return OrderStatus;
    }

    public void setOrderStatus(String orderStatus) {
        OrderStatus = orderStatus;
    }

    public Address getAddress() {
        return Address;
    }

    public void setAddress(Address address) {
        Address = address;
    }

    @Override
    public String toString() {
        return "Order [OID=" + OID + ", OrderStatus=" + OrderStatus
                + ", Address=" + Address + "]";
    }

}

 

Address：

package com.zzj.jsonlib.vo.user;

public class Address {
    private String State;

    public String getState() {
        return State;
    }

    public void setState(String state) {
        State = state;
    }

    @Override
    public String toString() {
        return "Adrress [State=" + State + "]";
    }



}

 

 

输出结果：

class com.zzj.jsonlib.vo.User
orderList
class com.zzj.jsonlib.vo.user.Order
OID
class com.zzj.jsonlib.vo.user.Order
address
class com.zzj.jsonlib.vo.user.Address
state
class com.zzj.jsonlib.vo.user.Order
orderStatus
class com.zzj.jsonlib.vo.User
password
class com.zzj.jsonlib.vo.User
username
{"OrderList":[{"OID":"123","Address":{"State":"YN"},"OrderStatus":"shipped"}],"Password":"123","Username":"001"}
-----------------------------------------------------
class com.zzj.jsonlib.vo.User
OrderList
class com.zzj.jsonlib.vo.user.Order
OID
class com.zzj.jsonlib.vo.user.Order
Address
class com.zzj.jsonlib.vo.user.Address
State
class com.zzj.jsonlib.vo.user.Order
OrderStatus
class com.zzj.jsonlib.vo.User
Password
class com.zzj.jsonlib.vo.User
Username
User [Username=001, Password=123, OrderList=[Order [OID=123, OrderStatus=shipped, Address=Adrress [State=YN]]]]