iOS:JSON转OC属性小工具 原
iOS:JSON转OC属性小工具
在iOS开发中，只要有网络模块，就需要数据模型的编写。在进行数据模型的解析和映射时，JSONModel是一个非常常用且优秀的第三方框架，之前有有过博客对其分析，地址如下：
JSONModel源码分析：https://cloud.tencent.com/developer/article/1185862。
无论使用什么第三方的JSON数据解析框架，我们都需要手动来编写数据模型类，这是一个十分机械性的体力活，本篇博客将介绍一个配合与JSONModel使用的自动生成属性脚本(支持类的嵌套)。
本脚本采用的语言为JavaScript，采用JavaScript编写有两个好处，首先其可以在node环境运行，可以十分方便的操作文件，使用它可以直接将JSON文件转换成OC数据模型类。其次，它也十分容易在Web端运行，可以通过网页可视化的进行数据模型的转换。
闲话少说，直接上源码：
var fileManager = require('fs');
var gettype=Object.prototype.toString;
String.prototype.firstUpperCase = function(){
return this.replace(/\b(\w)(\w*)/g, function($0, $1, $2) {
return $1.toUpperCase() + $2.toLowerCase();
});
}
var arguments = process.argv.splice(2);
var path = arguments[0];
if (!path) {
console.log("请传入要转换的JSON文件路径");
return;
}
console.log('json文件路径:', path);
try{
var result = JSON.parse(fileManager.readFileSync(path));
}catch(error){
console.log("解析JSON文件失败:"+error);
return;
}
if (!result) {
console.log("解析JSON文件无效");
return;
}
var classArray = new Array();
parseObject("MyObject",result);
var stringAll="";
//输出
for (var i = classArray.length-1; i >=0 ; i--) {
let cla = classArray[i];
stringAll+="@protocol "+cla.name+" @end\r\n\r\n@interface "+cla.name+" : JSONModel\r\n\r\n";
console.log("@protocol "+cla.name+" @end\r\n\r\n@interface "+cla.name+" : JSONModel\r\n\r\n");
for (var j = 0; j < cla.property.length; j++) {
stringAll+=cla.property[j]+"\r\n\r\n";
console.log(cla.property[j]+"\r\n\r\n");
}
stringAll+="@end\r\n\r\n";
console.log("@end\r\n\r\n");
}
stringAll+="===========m文件======================\r\n";
console.log("===========m文件======================\r\n");
for (var i = classArray.length-1; i >=0 ; i--) {
let cla = classArray[i];
stringAll+="@implementation "+cla.name+"\r\n\r\n@end\r\n\r\n";
console.log("@implementation "+cla.name+"\r\n\r\n@end\r\n\r\n");
}
let paths = path.split("/");
paths.pop();
let newPath = paths.join("/")+"/oc.txt";
fileManager.writeFileSync(newPath,stringAll);
//核心解析函数
function parseObject(k,result){
let c = new Class(k);
classArray.push(c);
for (var i = 0; i < Object.getOwnPropertyNames(result).length; i++) {
let key = Object.getOwnPropertyNames(result)[i];
let value = result[key];
let type = getType(value);
if(type==null){
continue;
}
if (type=="Object") {
//进行二次解析
if (Object.getOwnPropertyNames(value).length==0) {
c.property.push("@property(nonatomic,strong)NSDictionary<Optional>*"+key+";");
}else{
parseObject(key.firstUpperCase(),value);
c.property.push("@property(nonatomic,strong)"+key.firstUpperCase()+"<Optional,"+key.firstUpperCase()+">*"+key+";");
}
continue;
}
if (type=="Array") {
if (value.length>0) {
let obj = value[0];
let t = getType(obj);
if (t==null) {
continue;
}
if (t=="Object") {
c.property.push("@property(nonatomic,strong)NSArray<"+key.firstUpperCase()+"*><Optional,"+key.firstUpperCase()+">*"+key+";");
parseObject(key.firstUpperCase(),obj);
}else{
c.property.push("@property(nonatomic,strong)NSArray<"+t+"*><Optional>*"+key+";");
}
}else{
c.property.push("@property(nonatomic,strong)NSArray<Optional>*"+key+";");
}
continue;
}
if (type=="id") {
c.property.push("@property(nonatomic,strong)"+type+"<Optional>"+key+";");
continue;
}
c.property.push("@property(nonatomic,strong)"+type+"<Optional>*"+key+";");
}
}
//获取要转换的类型
function getType(obj){
if (typeof obj == 'number') {
return "NSNumber";
}
if (typeof obj == 'undefined') {
return "id";
}
if (typeof obj == 'null') {
return "id";
}
if (typeof obj == 'function') {
return null;
}
if (typeof obj == 'string') {
return "NSString"
}
if (typeof obj == 'boolean') {
return "NSNumber"
}
if (typeof obj == 'object') {
if (gettype.call(obj)=="[object Object]") {
return "Object";
}
if (gettype.call(obj)=="[object Array]") {
return "Array";
}
if (gettype.call(obj)=="[object Null]"){
return "id";
}
}
}
//类
function Class(name){
this.name = name;
this.property = new Array();
}在终端使用如下指令直接运行此脚本：
node Tool.js /Users/jaki/Desktop/json.json命令后面所跟的参数为JSON文件的路径，JSON文件内容如下：
{
"code": 0,
"message": "",
"result": {
"aid": "be3bdab8-fbf5-4e89-97cb-56b00048b09b",
"audios": [],
"avatar_url": "https://www.google.com/a.jpg",
"call_price": 0,
"cid": "efad6549-be62-40d7-a425-40f9b7730192",
"cover_url": "https://www.google.com/a.jpg",
"created_on": "1528349104",
"fields": [
{
"key": "name",
"value": "Mr.Wang"
},
{
"key": "company",
"value": "TicTalk"
},
{
"key": "position",
"value": "Senior Engineer"
}
],
"geo": {
"description": "Shanghai, China",
"latitude": 48.82694828196076,
"longitude": 2.367038433387592
},
"id": 2,
"message_price": 0,
"photo_sets": [],
"pid": "9b64395f-687c-4f34-9a5d-68d9adafa4cc",
"rid": "578ff973-c707-42b2-bfc2-87e4dc8e0efd",
"role_open": false,
"sid": "8f560338-dfa5-48be-b44c-65fd87798543",
"status": 0,
"updated_on": "1528349104",
"video_price": 0,
"videos": [],
"world_open": true
}
}运行后，可以看到在JSON文件同一目录下生成了oc.txt文件，内容如下：
@protocol Geo @end
@interface Geo : JSONModel
@property(nonatomic,strong)NSString<Optional>*description;
@property(nonatomic,strong)NSNumber<Optional>*latitude;
@property(nonatomic,strong)NSNumber<Optional>*longitude;
@end
@protocol Fields @end
@interface Fields : JSONModel
@property(nonatomic,strong)NSString<Optional>*key;
@property(nonatomic,strong)NSString<Optional>*value;
@end
@protocol Result @end
@interface Result : JSONModel
@property(nonatomic,strong)NSString<Optional>*aid;
@property(nonatomic,strong)NSArray<Optional>*audios;
@property(nonatomic,strong)NSString<Optional>*avatar_url;
@property(nonatomic,strong)NSNumber<Optional>*call_price;
@property(nonatomic,strong)NSString<Optional>*cid;
@property(nonatomic,strong)NSString<Optional>*cover_url;
@property(nonatomic,strong)NSString<Optional>*created_on;
@property(nonatomic,strong)NSArray<Fields*><Optional,Fields>*fields;
@property(nonatomic,strong)Geo<Optional,Geo>*geo;
@property(nonatomic,strong)NSNumber<Optional>*id;
@property(nonatomic,strong)NSNumber<Optional>*message_price;
@property(nonatomic,strong)NSArray<Optional>*photo_sets;
@property(nonatomic,strong)NSString<Optional>*pid;
@property(nonatomic,strong)NSString<Optional>*rid;
@property(nonatomic,strong)NSNumber<Optional>*role_open;
@property(nonatomic,strong)NSString<Optional>*sid;
@property(nonatomic,strong)NSNumber<Optional>*status;
@property(nonatomic,strong)NSString<Optional>*updated_on;
@property(nonatomic,strong)NSNumber<Optional>*video_price;
@property(nonatomic,strong)NSArray<Optional>*videos;
@property(nonatomic,strong)NSNumber<Optional>*world_open;
@end
@protocol MyObject @end
@interface MyObject : JSONModel
@property(nonatomic,strong)NSNumber<Optional>*code;
@property(nonatomic,strong)NSString<Optional>*message;
@property(nonatomic,strong)Result<Optional,Result>*result;
@end
===========m文件======================
@implementation Geo
@end
@implementation Fields
@end
@implementation Result
@end
@implementation MyObject
@end后面我们只需要将类名调整成所需要的即可。
下面是一个即用的网页转换器，采用的脚本代码和上面的代码基本一致：
http://zyhshao.github.io/JSONToOC.html
使用效果如下：
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