动态创建类属性的最佳方法是什么？
我必须基于Webhook推送消息创建JSON数据。 我创建了2个类，每个类都有多个属性，问题是，即使未填充属性（默认情况下为NULL），webhook push的格式也错误。为了避免这种情况，我必须根据需要创建属性。
是否有任何方法可以做到这一点？ 描绘我需要的东西：
public class ChannelSettings
{
public string channel { get; set; }
public string username { get; set; }
public string text { get; set; }
public AttachSettings attachments { get; set; } //Here I would like to this property to be dynamic
}
public class AttachSettings
{
public string fallback { get; set; }
public string pretext { get; set; }
public string text { get; set; }
public string title { get; set; }
public string author_name { get; set; }
public string image_url { get; set; }
public string author_icon { get; set; }
}
public string GenJSON(ChannelSettings channelSet)
{
string output = JsonConvert.SerializeObject(channelSet);
return output;
}
答案 0 :(得分：0)
您可以使用ExpandoObject。
dynamic expandoObject = new ExpandoObject();
expandoObject.NewProperty = "newValue";
我认为example可以帮助您。
答案 1 :(得分：0)
我不知道我是否理解正确，但是为什么不将此属性设为可选？ 只是使用AttachSettings？一切都应该没事。
答案 2 :(得分：0)
我想您真正想要的是让c成为字典还是其他东西？：
AttachSettings这应该产生如下的JSON：
public class ChannelSettings
{
public string channel { get; set; }
public string username { get; set; }
public string text { get; set; }
public Dictionary<string, string> attachments { get; set; }
}
public ChannelSettings GetData()
{
return new ChannelSettings
{
channel="one", username="user", text="text",
attachments= new Dictionary<string, string>()
{
{"fallback","somevalue"},
{"author_name","some author"},
{"shoe_size","12},
//...etc...
}
}
}
public string GenJSON(ChannelSettings channelSet)
{
string output = JsonConvert.SerializeObject(channelSet);
return output;
}
答案 3 :(得分：0)
您可以将参数类型设置为动态，并对其进行序列化和反序列化，如下所示：
{
"name": "admin-managment-barber",
"version": "0.1.0",
"private": true,
"dependencies": {
"@babel/core": "7.1.0",
"@svgr/webpack": "2.4.1",
"babel-core": "7.0.0-bridge.0",
"babel-eslint": "9.0.0",
"babel-jest": "23.6.0",
"babel-loader": "8.0.4",
"babel-plugin-named-asset-import": "^0.2.3",
"babel-preset-react-app": "^6.1.0",
"bfj": "6.1.1",
"case-sensitive-paths-webpack-plugin": "2.1.2",
"chalk": "2.4.1",
"css-loader": "1.0.0",
"dotenv": "6.0.0",
"dotenv-expand": "4.2.0",
"eslint": "5.6.0",
"eslint-config-react-app": "^3.0.5",
"eslint-loader": "2.1.1",
"eslint-plugin-flowtype": "2.50.1",
"eslint-plugin-import": "2.14.0",
"eslint-plugin-jsx-a11y": "6.1.2",
"eslint-plugin-react": "7.11.1",
"file-loader": "2.0.0",
"fork-ts-checker-webpack-plugin-alt": "0.4.14",
"fs-extra": "7.0.0",
"html-webpack-plugin": "4.0.0-alpha.2",
"identity-obj-proxy": "3.0.0",
"jest": "23.6.0",
"jest-pnp-resolver": "1.0.1",
"jest-resolve": "23.6.0",
"mini-css-extract-plugin": "0.4.3",
"mobx": "^5.6.0",
"mobx-react": "^5.4.2",
"mobx-react-router": "^4.0.5",
"moment": "^2.22.2",
"optimize-css-assets-webpack-plugin": "5.0.1",
"pnp-webpack-plugin": "1.1.0",
"postcss-flexbugs-fixes": "4.1.0",
"postcss-loader": "3.0.0",
"postcss-preset-env": "6.0.6",
"postcss-safe-parser": "4.0.1",
"react": "^16.6.3",
"react-app-polyfill": "^0.1.3",
"react-dev-utils": "^6.1.1",
"react-dom": "^16.6.3",
"react-router-dom": "^4.3.1",
"resolve": "1.8.1",
"sass-loader": "7.1.0",
"style-loader": "0.23.0",
"terser-webpack-plugin": "1.1.0",
"url-loader": "1.1.1",
"webpack": "4.19.1",
"webpack-dev-server": "3.1.9",
"webpack-manifest-plugin": "2.0.4",
"workbox-webpack-plugin": "3.6.3"
},
"scripts": {
"start": "node scripts/start.js",
"build": "node scripts/build.js",
"test": "node scripts/test.js"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": [
">0.2%",
"not dead",
"not ie <= 11",
"not op_mini all"
],
"jest": {
"collectCoverageFrom": [
"src/**/*.{js,jsx,ts,tsx}",
"!src/**/*.d.ts"
],
"resolver": "jest-pnp-resolver",
"setupFiles": [
"react-app-polyfill/jsdom"
],
"testMatch": [
"<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}",
"<rootDir>/src/**/?(*.)(spec|test).{js,jsx,ts,tsx}"
],
"testEnvironment": "jsdom",
"testURL": "http://localhost",
"transform": {
"^.+\\.(js|jsx|ts|tsx)$": "<rootDir>/node_modules/babel-jest",
"^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
"^(?!.*\\.(js|jsx|ts|tsx|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
},
"transformIgnorePatterns": [
"[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$",
"^.+\\.module\\.(css|sass|scss)$"
],
"moduleNameMapper": {
"^react-native$": "react-native-web",
"^.+\\.module\\.(css|sass|scss)$": "identity-obj-proxy"
},
"moduleFileExtensions": [
"web.js",
"js",
"web.ts",
"ts",
"web.tsx",
"tsx",
"json",
"web.jsx",
"jsx",
"node"
]
},
"babel": {
"plugins": [
[
"@babel/plugin-proposal-decorators",
{
"legacy": true
}
],
[
"@babel/plugin-proposal-class-properties",
{
"loose": true
}
]
],
"presets": [
"react-app"
]
},
"devDependencies": {
"@babel/plugin-proposal-class-properties": "^7.1.0",
"@babel/plugin-proposal-decorators": "^7.1.6",
"@babel/plugin-transform-react-jsx-source": "^7.0.0"
}
}
输出为：test
@GPW还有另一种使用字典的解决方案，该字典适用于未知类型/参数大小。
答案 4 :(得分：0)
我能想到的最接近的是ExpandoObject。它似乎可以与任何弱类型的WebService一起使用，并且您确实提到了JSON。
内部的似乎只不过是Dictionary<string, object>加上一些语法糖，更改名词和隐式转换而已。因此，如果有疑问，您也可以使用一个很好的旧收藏集。
答案 5 :(得分：0)
感谢所有非常有用的帮助，我已经解决了我的问题，该案例是Channel Class内部的Attachment的一个实例，我必须创建它的列表：
public class ChannelSettings
{
public string channel { get; set; }
public string username { get; set; }
public string text { get; set; }
public List<AttachSettings> attachments { get; set; }
}
然后不执行它，如果在这种情况下value为空，我会得到想要的结果。
“ {”频道“：空，”用户名“：”用户“，”文本“：”测试文本“，”附件“：空}”
在开始时我想要的有点不同，但是它的作用相同，所以不需要进一步更改：）