欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

java 通过 list 实现 json 生成 博客分类: javajson java实现json拼接 

程序员文章站 2024-02-12 08:35:46
...

 

java  实现 json 拼接

 

功能:通过 item 添加数据的方式 ,解析拼接成 json 字符串

 

待优化项: 使用 jsonobject.put(name,value) 而并非 map.put(name,value)

 

结果展示

 

[
{"gId":0,"id":1,"name":"config_latest_version","pId":0,"type":1,"value":"1.0.43"},
{"gId":0,"id":2,"name":"app_info","pId":0,"type":2},
{"gId":0,"id":3,"name":"app_latest_version","pId":2,"type":1,"value":"3.1.44"},
{"gId":0,"id":4,"name":"app_version_illustration","pId":2,"type":1,"value":"www.baoyou.com android版本3.1.44"},
{"gId":0,"id":5,"name":"country_code","pId":0,"type":3},
{"gId":1,"id":6,"name":"code","pId":5,"type":1,"value":"1"},
{"gId":1,"id":7,"name":"value","pId":5,"type":1,"value":"+86"},
{"gId":1,"id":8,"name":"sequence","pId":5,"type":1,"value":"1"},
{"gId":0,"id":9,"name":"slide_show_list","pId":0,"type":3},
{"gId":1,"id":10,"name":"type","pId":9,"type":1,"value":"slide_show_001"},
{"gId":1,"id":11,"name":"effective_start_time","pId":9,"type":1,"value":"2016-09-06 08:00:00"},
{"gId":1,"id":12,"name":"effective_end_time","pId":9,"type":1,"value":"2016-09-06 08:00:00"},
{"gId":1,"id":13,"name":"times","pId":9,"type":1,"value":"3"},
{"gId":1,"id":14,"name":"sequence","pId":9,"type":1,"value":"1"},
{"gId":1,"id":15,"name":"picture_list","pId":9,"type":3},
{"gId":1,"id":16,"name":"code","pId":15,"type":1,"value":"1"},
{"gId":1,"id":17,"name":"vale","pId":15,"type":1,"value":"https://www.baoyou.com/function_introduction/1.png?version=2016930"},
{"gId":1,"id":18,"name":"url","pId":15,"type":1,"value":""},
{"gId":1,"id":19,"name":"sequence","pId":15,"type":1,"value":"1"},
{"gId":2,"id":20,"name":"code","pId":15,"type":1,"value":"2"},
{"gId":2,"id":21,"name":"vale","pId":15,"type":1,"value":"https://www.baoyou.com/function_introduction/2.png?version=2016930"},
{"gId":2,"id":22,"name":"url","pId":15,"type":1,"value":""},
{"gId":2,"id":23,"name":"sequence","pId":15,"type":1,"value":"2"},
{"gId":3,"id":24,"name":"code","pId":15,"type":1,"value":"3"},
{"gId":3,"id":25,"name":"vale","pId":15,"type":1,"value":"https://www.baoyou.com/function_introduction/3.png?version=20161129"},
{"gId":3,"id":26,"name":"url","pId":15,"type":1,"value":""},
{"gId":3,"id":27,"name":"sequence","pId":15,"type":1,"value":"3"},
{"gId":2,"id":28,"name":"type","pId":9,"type":1,"value":"slide_show_002"},
{"gId":2,"id":29,"name":"effective_start_time","pId":9,"type":1,"value":"2016-09-06 08:00:00"},
{"gId":2,"id":30,"name":"effective_end_time","pId":9,"type":1,"value":"2016-09-06 08:00:00"},
{"gId":2,"id":31,"name":"times","pId":9,"type":1,"value":"3"},
{"gId":2,"id":32,"name":"sequence","pId":9,"type":1,"value":"2"},
{"gId":2,"id":33,"name":"picture_list","pId":9,"type":3},
{"gId":1,"id":34,"name":"code","pId":33,"type":1,"value":"1"},
{"gId":1,"id":35,"name":"vale","pId":33,"type":1,"value":"https://www.baoyou.com/function_introduction/1.png?version=2016930"},
{"gId":1,"id":36,"name":"url","pId":33,"type":1,"value":""},
{"gId":1,"id":37,"name":"sequence","pId":33,"type":1,"value":"1"},
{"gId":2,"id":38,"name":"code","pId":33,"type":1,"value":"2"},
{"gId":2,"id":39,"name":"vale","pId":33,"type":1,"value":"https://www.baoyou.com/function_introduction/2.png?version=2016930"},
{"gId":2,"id":40,"name":"url","pId":33,"type":1,"value":""},
{"gId":2,"id":41,"name":"sequence","pId":33,"type":1,"value":"2"}
]

 

 

{
    "app_info": {
        "app_latest_version": "3.1.44",
        "app_version_illustration": "www.baoyou.com android版本3.1.44"
    },
    "config_latest_version": "1.0.43",
    "country_code": [
        {
            "code": "1",
            "sequence": "1",
            "value": "+86"
        }
    ],
    "slide_show_list": [
        {
            "effective_end_time": "2016-09-06 08:00:00",
            "effective_start_time": "2016-09-06 08:00:00",
            "picture_list": [
                {
                    "code": "3",
                    "sequence": "3",
                    "url": "",
                    "vale": "https://www.baoyou.com/function_introduction/3.png?version=20161129"
                },
                {
                    "code": "2",
                    "sequence": "2",
                    "url": "",
                    "vale": "https://www.baoyou.com/function_introduction/2.png?version=2016930"
                },
                {
                    "code": "1",
                    "sequence": "1",
                    "url": "",
                    "vale": "https://www.baoyou.com/function_introduction/1.png?version=2016930"
                }
            ],
            "sequence": "1",
            "times": "3",
            "type": "slide_show_001"
        },
        {
            "effective_end_time": "2016-09-06 08:00:00",
            "effective_start_time": "2016-09-06 08:00:00",
            "picture_list": [
                {
                    "code": "2",
                    "sequence": "2",
                    "url": "",
                    "vale": "https://www.baoyou.com/function_introduction/2.png?version=2016930"
                },
                {
                    "code": "1",
                    "sequence": "1",
                    "url": "",
                    "vale": "https://www.baoyou.com/function_introduction/1.png?version=2016930"
                }
            ],
            "sequence": "2",
            "times": "3",
            "type": "slide_show_002"
        }
    ]
}

 

 代码部分:

 

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface TreeNodeGId
{
 
}

 

 

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
public @interface TreeNodeId
{
 
}

 

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

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.google.common.collect.Lists;
import www.baoyou.com.annotation.TreeNodeGId;
import www.baoyou.com.annotation.TreeNodeId;
import www.baoyou.com.annotation.TreeNodeName;
import www.baoyou.com.annotation.TreeNodePId;
import www.baoyou.com.annotation.TreeNodeType;
import www.baoyou.com.annotation.TreeNodeValue;
import www.baoyou.com.util.node.BuildHelper;
import www.baoyou.com.util.node.JsonHelper;
public class Item {
/*
[
 { id:1, pId:0,gid:null,type:"1", name:"config_latest_version",  open:true,value:"1.0.43"},
 { id:2, pId:0,gid:null,type:"2", name:"app_info", open:true},
	 { id:3, pId:2,gid:null,type:"1", name:"app_latest_version",value:"3.1.44"},
	 { id:4, pId:2,gid:null,type:"1", name:"app_version_illustration",value:"www.baoyou.com android版本3.1.44"},
 { id:5, pId:0,gid:null,type:"3", name:"country_code"},
	 { id:6, pId:5,gid:1,type:"1", name:"code",value:"1"},
	 { id:7, pId:5,gid:1,type:"1", name:"value",value:"+86"},
	 { id:8, pId:5,gid:1,type:"1", name:"sequence",value:"1"}

{ id:9, pId:0,gid:0,type:"3", name:"slide_show_list"},
	{ id:10, pId:9,gid:1,type:"3", name:"type",value:"slide_show_001"},
	{ id:11, pId:9,gid:1,type:"3", name:"effective_start_time",value:"2016-09-06 08:00:00"},
	{ id:12, pId:9,gid:1,type:"3", name:"effective_end_time",value:"2016-12-06 08:00:00"},
	{ id:13, pId:9,gid:1,type:"3", name:"times",value:"3"},
	{ id:14, pId:9,gid:1,type:"3", name:"sequence",value:"1"},
	{ id:15, pId:9,gid:1,type:"3", name:"picture_list"},
		{ id:16, pId:15,gid:1,type:"3", name:"code",value:"1"},
		{ id:17, pId:15,gid:1,type:"3", name:"vale",value:"https://www.baoyou.com/1.png?version=2016930"},
		{ id:18, pId:15,gid:1,type:"3", name:"url",value:""},
		{ id:19, pId:15,gid:1,type:"3", name:"sequence",value:"1"},

		{ id:20, pId:15,gid:2,type:"3", name:"code",value:"2"},
		{ id:21, pId:15,gid:2,type:"3", name:"vale",value:"https://www.baoyou.com/2.png?version=2016930"},
		{ id:22, pId:15,gid:2,type:"3", name:"url",value:""},
		{ id:23, pId:15,gid:2,type:"3", name:"sequence",value:"2"},

		{ id:24, pId:15,gid:3,type:"3", name:"code",value:"3"},
		{ id:25, pId:15,gid:3,type:"3", name:"vale",value:"https://www.baoyou.com/3.png?version=20161129"},
		{ id:26, pId:15,gid:3,type:"3", name:"url",value:""},
		{ id:27, pId:15,gid:3,type:"3", name:"sequence",value:"3"}
	
	{ id:28, pId:9,gid:2,type:"3", name:"type",value:"slide_show_002"},
	{ id:29, pId:9,gid:2,type:"3", name:"effective_start_time",value:"2016-09-06 08:00:00"},
	{ id:30, pId:9,gid:2,type:"3", name:"effective_end_time",value:"2016-12-06 08:00:00"},
	{ id:31, pId:9,gid:2,type:"3", name:"times",value:"3"},
	{ id:32, pId:9,gid:2,type:"3", name:"sequence",value:"1"},
	{ id:33, pId:9,gid:2,type:"3", name:"picture_list"},
		{ id:34, pId:33,gid:1,type:"3", name:"code",value:"4"},
		{ id:35, pId:33,gid:1,type:"3", name:"vale",value:"https://www.baoyou.com/carouselfigure02.png?version=2016930"},
		{ id:36, pId:33,gid:1,type:"3", name:"url",value:""},
		{ id:37, pId:33,gid:1,type:"3", name:"sequence",value:"4"},

		{ id:38, pId:33,gid:2,type:"3", name:"code",value:"5"},
		{ id:39, pId:33,gid:2,type:"3", name:"vale",value:"https://www.baoyou.com/carouselfigure02.png?version=2016930"},
		{ id:40, pId:33,gid:2,type:"3", name:"url",value:""},
		{ id:41, pId:33,gid:2,type:"3", name:"sequence",value:"5"}

] 
	*/
	
   public static void main(String[] args) throws IllegalArgumentException, IllegalAccessException {
		// Item(int id, int pId, int type, int gId, String name, String value) 
		Item item1 = new Item(1,0,1,0,"config_latest_version","1.0.43");	
		Item item2 = new Item(2,0,2,0,"app_info",null);
		Item item3 = new Item(3,2,1,0,"app_latest_version","3.1.44");
		Item item4 = new Item(4,2,1,0,"app_version_illustration","android版本3.1.44");		
		Item item5 = new Item(5,0,3,0,"country_code",null); 		
		
		Item item6 = new Item(6,5,1,1,"code","1");
		Item item7 = new Item(7,5,1,1,"value","+86");
		Item item8 = new Item(8,5,1,1,"sequence","1");		 
		
		Item item9 = new Item(9,5,1,2,"code","2");
		Item item10 = new Item(10,5,1,2,"value","+001");
		Item item11 = new Item(11,5,1,2,"sequence","2");	
		
		
		
		Map map = new TreeMap<String,String>();
		map.put(item1.name, item1.value);
		
		Map map2 = new TreeMap<String,String>();
		map2.put(item3.name, item3.value);
		map2.put(item4.name, item4.value);
		map.put(item2.name, map2);
		 
		Map map6 = new TreeMap<String,String>();
		map6.put(item6.name, item6.value);
		map6.put(item7.name, item7.value);
		map6.put(item8.name, item8.value); 
		List list = new ArrayList<Map>(); 
		list.add(map6);
		map.put(item5.name,list);
		
		 
		
		System.out.println(JSON.toJSONString(map2)); 
		System.out.println(JSON.toJSONString(map));
		
		
		
	  List <Item> original = Lists.newArrayList(item1,item2,item3,item4,item5,item6,item7,item8,item9,item10,item11);
	  List<Node> convertDatas2Nodes = BuildHelper.convertDatas2Nodes(original);  
	  List<Node> sortedNodes = BuildHelper.getSortedNodes(convertDatas2Nodes);
	  Map result = JsonHelper.getResult(sortedNodes);
 	  System.out.println(JSON.toJSONString(result,SerializerFeature.DisableCircularReferenceDetect));
	}

	@TreeNodeId
	public int id = 0;
	@TreeNodePId
	public int pId = 0;
	@TreeNodeType
	public int type = 1; // 1:k-v 2:k-o 3:k-l
	@TreeNodeGId
	public int gId = 0; // 3 存在 1 null 2 null
	@TreeNodeName
	public String name = null;
	@TreeNodeValue
	public String value = null; // 1 存在 2 null 3 null

	 
	
	
	public Item(int id, int pId, int type, int gId, String name, String value) {
		this.id = id;
		this.pId = pId;
		this.type = type;
		this.gId = gId;
		this.name = name;
		this.value = value;
	}

	public int getId() {
		return id;
	}

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

	public int getpId() {
		return pId;
	}

	public void setpId(int pId) {
		this.pId = pId;
	}

	public int getType() {
		return type;
	}

	public void setType(int type) {
		this.type = type;
	}

	public int getgId() {
		return gId;
	}

	public void setgId(int gId) {
		this.gId = gId;
	}

	public String getName() {
		return name;
	}

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

	public String getValue() {
		return value;
	}

	public void setValue(String value) {
		this.value = value;
	}

	@Override
	public String toString() {
		return "Item [name=" + name + ", value=" + value + "]";
	}
	
	
	
}

 

import java.util.ArrayList;
import java.util.List;

import www.baoyou.com.annotation.TreeNodeGId;
import www.baoyou.com.annotation.TreeNodeId;
import www.baoyou.com.annotation.TreeNodeName;
import www.baoyou.com.annotation.TreeNodePId;
import www.baoyou.com.annotation.TreeNodeType;
import www.baoyou.com.annotation.TreeNodeValue;
public class Node {

	@TreeNodeId
	public int id = 0;
	@TreeNodePId
	public int pId = 0;
	@TreeNodeType
	public int type = 1; // 1:k-v 2:k-o 3:k-l
	@TreeNodeGId
	public int gId = 0; // 3 存在 1 null 2 null
	@TreeNodeName
	public String name = null;
	@TreeNodeValue
	public String value = null; // 1 存在 2 null 3 null
	
	public int level;
	
	public boolean isLeaf;
	
	private Node parent;
	public List<Node> child= new ArrayList<Node>();

	
	public Node(){}
	
	public Node(int id, int pId, int type, int gId, String name, String value) {
		this.id = id;
		this.pId = pId;
		this.type = type;
		this.gId = gId;
		this.name = name;
		this.value = value;
	}

	public int getId() {
		return id;
	}

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

	public int getpId() {
		return pId;
	}

	public void setpId(int pId) {
		this.pId = pId;
	}

	public int getType() {
		return type;
	}

	public void setType(int type) {
		this.type = type;
	}

	public int getgId() {
		return gId;
	}

	public void setgId(int gId) {
		this.gId = gId;
	}

	public String getName() {
		return name;
	}

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

	public String getValue() {
		return value;
	}

	public void setValue(String value) {
		this.value = value;
	}

	public int getLevel() {
		return parent == null ? 1 : parent.getLevel() + 1;
	}

	public void setLevel(int level) {
		this.level = level;
	}

	public boolean isLeaf() {
		return this.child.size() == 0;
	}

 

	public List<Node> getChild() {
		return child;
	}

	public void setChild(List<Node> child) {
		this.child = child;
	}

	public Node getParent() {
		return parent;
	}

	public void setParent(Node parent) {
		this.parent = parent;
	}
	
	
	public boolean isRoot(){
		
		
		return this.parent == null;
	}
	
	 
	
}

 

import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

import com.alibaba.fastjson.JSON;
import com.google.common.collect.Lists;
import www.baoyou.com.annotation.TreeNodeGId;
import www.baoyou.com.annotation.TreeNodeId;
import www.baoyou.com.annotation.TreeNodeName;
import www.baoyou.com.annotation.TreeNodePId;
import www.baoyou.com.annotation.TreeNodeType;
import www.baoyou.com.annotation.TreeNodeValue;
import www.baoyou.com.entity.Item;
import www.baoyou.com.entity.Node;
public class BuildHelper {

	 
	@SuppressWarnings("rawtypes")
	public static <T> List<Node> convertDatas2Nodes(List<T> datas)
			throws IllegalArgumentException, IllegalAccessException
	{
		List<Node> nodes = new ArrayList<Node>();
		Node node = null;
		for (T t : datas)
		{
		     int id = 0; 
			 int pId = 0; 
			 int type = 1; // 1:k-v 2:k-o 3:k-l 
			 int gId = 0; // 3 存在 1 null 2 null 
			 String name = null; 
			 String value= null;

			node = new Node();
			Class clazz = t.getClass();
			Field[] fields = clazz.getDeclaredFields();
			for (Field field : fields)
			{
				if (field.getAnnotation(TreeNodeId.class) != null)
				{
					field.setAccessible(true);
					id = field.getInt(t);
				}
				if (field.getAnnotation(TreeNodePId.class) != null)
				{
					field.setAccessible(true);
					pId = field.getInt(t);
				}
				if (field.getAnnotation(TreeNodeType.class) != null)
				{
					field.setAccessible(true);
					type = field.getInt(t);
				}
				if (field.getAnnotation(TreeNodeGId.class) != null)
				{
					field.setAccessible(true);
					gId = field.getInt(t);
				}
				if (field.getAnnotation(TreeNodeName.class) != null)
				{
					field.setAccessible(true);
					name = (String) field.get(t);
				}
				if (field.getAnnotation(TreeNodeValue.class) != null)
				{
					field.setAccessible(true);
					value = (String) field.get(t);
				}
				
			}
			node = new Node(id, pId, type, gId, name, value);
			nodes.add(node);
		} 
		for (int i = 0; i < nodes.size(); i++)
		{
			Node n = nodes.get(i);

			for (int j = i + 1; j < nodes.size(); j++)
			{
				Node m = nodes.get(j);

				if (m.getpId() == n.getId())
				{
					n.getChild().add(m);
					m.setParent(n);
				} else if (m.getId() == n.getpId())
				{
					m.getChild().add(n);
					n.setParent(m);
				}
			}
		}
		//System.out.println(JSON.toJSONString(nodes,SerializerFeature.DisableCircularReferenceDetect) );
		return nodes;
	}
	
	public static <T> List<Node> getSortedNodes(List<T> datas) throws IllegalArgumentException,
			IllegalAccessException
	{
		List<Node> nodes = convertDatas2Nodes(datas); 
		return getRootNodes(nodes);
	}

	 
	private static List<Node> getRootNodes(List<Node> nodes)
	{
		List<Node> root = new ArrayList<Node>();
		for (Node node : nodes)
		{
			if (node.isRoot())
			{
				root.add(node);
			}
		}
		return root;
	}
	
	
	/*
	[
	 { id:1, pId:0,gid:null,type:"1", name:"config_latest_version",  open:true,value:"1.0.43"},
	 { id:2, pId:0,gid:null,type:"2", name:"app_info", open:true},
		 { id:3, pId:2,gid:null,type:"1", name:"app_latest_version",value:"3.1.44"},
		 { id:4, pId:2,gid:null,type:"1", name:"app_version_illustration",value:"www.baoyou.com android版本3.1.44"},
	 { id:5, pId:0,gid:null,type:"3", name:"country_code"},
		 { id:6, pId:5,gid:1,type:"1", name:"code",value:"1"},
		 { id:7, pId:5,gid:1,type:"1", name:"value",value:"+86"},
		 { id:8, pId:5,gid:1,type:"1", name:"sequence",value:"1"}

	{ id:9, pId:0,gid:0,type:"3", name:"slide_show_list"},
		{ id:10, pId:9,gid:1,type:"1", name:"type",value:"slide_show_001"},
		{ id:11, pId:9,gid:1,type:"1", name:"effective_start_time",value:"2016-09-06 08:00:00"},
		{ id:12, pId:9,gid:1,type:"1", name:"effective_end_time",value:"2016-12-06 08:00:00"},
		{ id:13, pId:9,gid:1,type:"1", name:"times",value:"3"},
		{ id:14, pId:9,gid:1,type:"1", name:"sequence",value:"1"},
		{ id:15, pId:9,gid:1,type:"3", name:"picture_list"},
			{ id:16, pId:15,gid:1,type:"3", name:"code",value:"1"},
			{ id:17, pId:15,gid:1,type:"3", name:"vale",value:"https://www.baoyou.com/function_introduction/1.png?version=2016930"},
			{ id:18, pId:15,gid:1,type:"3", name:"url",value:""},
			{ id:19, pId:15,gid:1,type:"3", name:"sequence",value:"1"},

			{ id:20, pId:15,gid:2,type:"3", name:"code",value:"2"},
			{ id:21, pId:15,gid:2,type:"3", name:"vale",value:"https://www.baoyou.com/function_introduction/2.png?version=2016930"},
			{ id:22, pId:15,gid:2,type:"3", name:"url",value:""},
			{ id:23, pId:15,gid:2,type:"3", name:"sequence",value:"2"},

			{ id:24, pId:15,gid:3,type:"3", name:"code",value:"3"},
			{ id:25, pId:15,gid:3,type:"3", name:"vale",value:"https://www.baoyou.com/function_introduction/3.png?version=20161129"},
			{ id:26, pId:15,gid:3,type:"3", name:"url",value:""},
			{ id:27, pId:15,gid:3,type:"3", name:"sequence",value:"3"}
		
		{ id:28, pId:9,gid:2,type:"3", name:"type",value:"slide_show_002"},
		{ id:29, pId:9,gid:2,type:"3", name:"effective_start_time",value:"2016-09-06 08:00:00"},
		{ id:30, pId:9,gid:2,type:"3", name:"effective_end_time",value:"2016-12-06 08:00:00"},
		{ id:31, pId:9,gid:2,type:"3", name:"times",value:"3"},
		{ id:32, pId:9,gid:2,type:"3", name:"sequence",value:"1"},
		{ id:33, pId:9,gid:2,type:"3", name:"picture_list"},
			{ id:34, pId:33,gid:1,type:"3", name:"code",value:"4"},
			{ id:35, pId:33,gid:1,type:"3", name:"vale",value:"https://www.baoyou.com/function_introduction/carouselfigure02.png?version=2016930"},
			{ id:36, pId:33,gid:1,type:"3", name:"url",value:""},
			{ id:37, pId:33,gid:1,type:"3", name:"sequence",value:"4"},

			{ id:38, pId:33,gid:2,type:"3", name:"code",value:"5"},
			{ id:39, pId:33,gid:2,type:"3", name:"vale",value:"https://www.baoyou.com/function_introduction/carouselfigure02.png?version=2016930"},
			{ id:40, pId:33,gid:2,type:"3", name:"url",value:""},
			{ id:41, pId:33,gid:2,type:"3", name:"sequence",value:"5"}

	] 
		*/
	
	@SuppressWarnings({ "unused", "rawtypes" })
	public static void main(String[] args) throws IllegalArgumentException, IllegalAccessException {
		
		Item item1 = new Item(1,0,1,0,"config_latest_version","1.0.43");	
		Item item2 = new Item(2,0,2,0,"app_info",null);
		Item item3 = new Item(3,2,1,0,"app_latest_version","3.1.44");
		Item item4 = new Item(4,2,1,0,"app_version_illustration","www.baoyou.com android版本3.1.44");		
		Item item5 = new Item(5,0,3,0,"country_code",null); 		
		Item item6 = new Item(6,5,1,1,"code","1");
		Item item7 = new Item(7,5,1,1,"value","+86");
		Item item8 = new Item(8,5,1,1,"sequence","1");		 
		
		Item item9 = new Item(9,0,3,0,"slide_show_list",null);		 
		
		Item item10 = new Item(10,9,1,1,"type","slide_show_001");		
		Item item11 = new Item(11,9,1,1,"effective_start_time","2016-09-06 08:00:00");		
		Item item12 = new Item(12,9,1,1,"effective_end_time","2016-09-06 08:00:00");		
		Item item13 = new Item(13,9,1,1,"times","3");		
		Item item14 = new Item(14,9,1,1,"sequence","1");		
		Item item15 = new Item(15,9,3,1,"picture_list",null);		
		
		Item item16 = new Item(16,15,1,1,"code","1");
		Item item17 = new Item(17,15,1,1,"vale","https://www.baoyou.com/function_introduction/1.png?version=2016930");
		Item item18 = new Item(18,15,1,1,"url","");
		Item item19 = new Item(19,15,1,1,"sequence","1");
		
		Item item20 = new Item(20,15,1,2,"code","2");
		Item item21 = new Item(21,15,1,2,"vale","https://www.baoyou.com/function_introduction/2.png?version=2016930");
		Item item22 = new Item(22,15,1,2,"url","");
		Item item23 = new Item(23,15,1,2,"sequence","2");
		
		Item item24 = new Item(24,15,1,3,"code","3");
		Item item25 = new Item(25,15,1,3,"vale","https://www.baoyou.com/function_introduction/3.png?version=20161129");
		Item item26 = new Item(26,15,1,3,"url","");
		Item item27 = new Item(27,15,1,3,"sequence","3");
	
		 
		Item item28 = new Item(28,9,1,2,"type","slide_show_002");		
		Item item29 = new Item(29,9,1,2,"effective_start_time","2016-09-06 08:00:00");		
		Item item30 = new Item(30,9,1,2,"effective_end_time","2016-09-06 08:00:00");		
		Item item31 = new Item(31,9,1,2,"times","3");		
		Item item32 = new Item(32,9,1,2,"sequence","2");		
		Item item33 = new Item(33,9,3,2,"picture_list",null);		
		
		Item item34 = new Item(34,33,1,1,"code","1");
		Item item35 = new Item(35,33,1,1,"vale","https://www.baoyou.com/function_introduction/1.png?version=2016930");
		Item item36 = new Item(36,33,1,1,"url","");
		Item item37 = new Item(37,33,1,1,"sequence","1");
		
		Item item38 = new Item(38,33,1,2,"code","2");
		Item item39 = new Item(39,33,1,2,"vale","https://www.baoyou.com/function_introduction/2.png?version=2016930");
		Item item40 = new Item(40,33,1,2,"url","");
		Item item41 = new Item(41,33,1,2,"sequence","2");
		 
	    List <Item> list = Lists.newArrayList(item1,item2,item3,item4,item5,item6,item7,item8,item9,item10
	    		                              ,item11,item12,item13,item14,item15,item16,item17,item18,item19,item20
	    		                              ,item21,item22,item23,item24,item25,item26,item27
	    		                               ,item28,item29,item30
	    		                              ,item31,item32,item33,item34,item35,item36,item37,item38,item39,item40
	    		                              ,item41  
	    		);
		
	    List<Node> nodes = convertDatas2Nodes(list);
	    
	    List<Node> sortedNodes = getSortedNodes(nodes);
	    System.out.println(JSON.toJSONString(sortedNodes) );
	    
	    Map mapresult = new TreeMap<String,String>();
		Map result = JsonHelper.getResult(sortedNodes);
		System.out.println(JSON.toJSONString(result));
	    
		   
	}
}

 

 

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

import www.baoyou.com.entity.Node;
public class JsonHelper {

	
 @SuppressWarnings({ "rawtypes" })
public static Map getResult2(List<Node> list){ 
	 return getResult(list);
 }
 
 @SuppressWarnings({ "rawtypes", "unchecked" })
public static List getResult3(List<Node> list){  
	 List root = new ArrayList<Map>();  
	 Map<String,List> ll = new HashMap<String,List>();
	 for (Node n :list) {
		List llist = ll.get(n.pId +"@"+n.gId);
		if(llist == null){
			llist = new ArrayList<Node>();
		}
		llist.add(n);
		ll.put(n.pId +"@"+n.gId,llist);
	 }
	 for (List<Node> lnode : ll.values()) {
		 root.add(getResult(lnode));
	 }
	 return root;
 }
 
  @SuppressWarnings({ "rawtypes", "unchecked" })
public static Map getResult(List<Node> list){
	  Map map = new TreeMap();
	  for (Node n : list) {
		switch (n.type) {
		case 1:
			map.put(n.name, n.value);
			break;
        case 2: 
			map.put(n.name,getResult2(n.child));
			break;
        case 3: 
		    map.put(n.name,getResult3(n.child));
			break;
		default:
			break;
		}
	  }
	  
	  return map;
  }
  
  
 
  
}

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

捐助开发者 

在兴趣的驱动下,写一个免费的东西,有欣喜,也还有汗水,希望你喜欢我的作品,同时也能支持一下。 当然,有钱捧个钱场(支持支付宝和微信 以及扣扣群),没钱捧个人场,谢谢各位。

 

个人主页http://knight-black-bob.iteye.com/


java 通过 list<item> 实现 json 生成
            
    
    博客分类: javajson java实现json拼接 java 通过 list<item> 实现 json 生成
            
    
    博客分类: javajson java实现json拼接 java 通过 list<item> 实现 json 生成
            
    
    博客分类: javajson java实现json拼接 
 
 
 谢谢您的赞助,我会做的更好!