在 Angular 中将 JSON 导出为 CSV
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时间：2020-09-03 18:01:05 来源:igfitidea点击:
Export JSON to CSV in Angular
提问by mindparse
I am looking for ways to convert a JSON object into CSV format using Angular. I came across this https://www.npmjs.com/package/jsonexportwhich is exactly the kind of thing I want to use, but I am unsure if I can actually use this with Angular (seems to node specific?) and if not, are there any ready made directives, etc out there that I could feed some JSON into to get CSV back.
我正在寻找使用 Angular 将 JSON 对象转换为 CSV 格式的方法。我遇到了这个https://www.npmjs.com/package/jsonexport，这正是我想要使用的那种东西，但我不确定我是否真的可以将它与 Angular 一起使用（似乎是特定于节点的？）不，是否有任何现成的指令等，我可以将一些 JSON 输入到其中以返回 CSV。
Can anyone point me at some useful examples, I have had a look around and they seem to be few and far between and what I have found only seems to cope with very basic flat JSON structures.
任何人都可以指出一些有用的例子，我环顾四周，它们似乎很少，而且我发现的似乎只能处理非常基本的扁平 JSON 结构。
Thanks
谢谢
回答by Alex
Try this http://ngmodules.org/modules/ng-csv
试试这个http://ngmodules.org/modules/ng-csv
For working example - https://asafdav.github.io/ng-csv/example/
对于工作示例 - https://asafdav.github.io/ng-csv/example/
Usage example js (taken from their docs)
用法示例 js（取自他们的文档）
Script
脚本
var myapp = angular.module('myapp', ["ngSanitize", "ngCsv"]);
myapp.controller('myctrl', function ($scope) {
$scope.filename = "test";
$scope.getArray = [{a: 1, b:2}, {a:3, b:4}];
$scope.addRandomRow = function() {
$scope.getArray.push({a: Math.floor((Math.random()*10)+1), b: Math.floor((Math.random()*10)+1)});
};
$scope.getHeader = function () {return ["A", "B"]};
$scope.clickFn = function() {
console.log("click click click");
};
});
Markup
标记
<div ng-app="myapp">
<div class="container" ng-controller="myctrl">
<div class="page-header">
<h1>ngCsv <small>example</small></h1>
</div>
<div class="form-group">
<label for="filename">Filename </label>
<input type="text" id="filename" class="form-control" ng-model="filename">
</div>
<div class="form-group">
<label for="separator">Field separator</label>
<input type="text" id="separator" class="form-control" ng-model="separator" ng-init="separator=','">
</div>
<div class="form-group">
<label for="decimal-separator">Decimal separator</label>
<input type="text" id="decimal-separator" class="form-control" ng-model="decimalSeparator" ng-init="decimalSeparator='.'">
</div>
<button class="btn btn-default"
ng-csv="getArray" filename="{{ filename }}.csv" field-separator="{{separator}}" decimal-separator="{{decimalSeparator}}"
>Export to CSV</button>
<button class="btn btn-default"
ng-csv="getArray" csv-header="getHeader()" filename="{{ filename }}" field-separator="{{separator}}" decimal-separator="{{decimalSeparator}}"
>Export to CSV with header</button>
<button class="btn btn-default"
ng-csv="getArray" csv-header="getHeader()" filename="{{ filename }}" field-separator="{{separator}}" decimal-separator="{{decimalSeparator}}"
ng-click="clickFn()">Export with ng-click</button>
<button class="btn btn-default"
ng-csv="getArray" filename="{{ filename }}.csv" field-separator="{{separator}}" decimal-separator="{{decimalSeparator}}" add-bom="true"
>With BOM</button>
<button class="btn btn-default" ng-click="addRandomRow()">Add row</button>
</div>
</div>
回答by VRavi
There is no option to export sub-grid data in ui-grid. But we have another choice to export ui-grid and it's sub-grid data as .csv file by using FileSaver.js. I have created a Directive to get grid data/Json data and then format the data like a tree structure and then download .csv file by using FileSaver.js . It has a limit upto a nested grid.
ui-grid 中没有导出子网格数据的选项。但是我们还有另一种选择，可以使用 FileSaver.js 将 ui-grid 及其子网格数据导出为 .csv 文件。我创建了一个指令来获取网格数据/Json 数据，然后像树结构一样格式化数据，然后使用 FileSaver.js 下载 .csv 文件。它对嵌套网格有限制。
angular.module("exampleModule", [])
.controller('exampleController', function ($scope) {
$scope.dataList = [
{
id: 1,
name: 'github',
price: '200$',
publisher: {
name: 'hieutran',
company: 'Dtag-VN'
},
nested:[
{
name: 'name1',
company: 'company1'
},
{
name: 'name2',
company: 'company2'
}]
},
{
id: 2,
name: 'twitter',
price: '500$',
publisher: {
name: 'twitter tran',
company: 'Canada'
},
nested:[]
},
{
id: 3,
name: 'google',
price: '300$',
publisher: {
name: 'tran',
company: 'Vietname'
},
nested:[
{
name: 'name3',
company: 'company3'
},
{
name: 'name4',
company: 'company4'
}]
}
]
})
.directive("ngGridJsonExportExcel", function($timeout) {
return {
restrict: "AE",
scope: {
data: "=",
filename: "=?",
reportFields: "=",
nestedReportFields: "=",
nestedDataProperty: "@"
},
link: function(scope, element) {
scope.filename = !!scope.filename ? scope.filename : "export-excel";
function generateFieldsAndHeaders(fieldsObject, fields, header) {
_.forEach(fieldsObject, function(field, key) {
if (!field || !key) {
throw new Error("error json report fields");
}
fields.push(key);
header.push(field);
});
return {fields: fields, header: header};
}
var fieldsAndHeader = generateFieldsAndHeaders(scope.reportFields, [], []);
var fields = fieldsAndHeader.fields, header = fieldsAndHeader.header;
var nestedFieldsAndHeader = generateFieldsAndHeaders(scope.nestedReportFields, [], [""]);
var nestedFields = nestedFieldsAndHeader.fields, nestedHeader = nestedFieldsAndHeader.header;
function _convertToExcel(body, header) {
return header + "\n" + body;
}
function _objectToString(object) {
var output = "";
_.forEach(object, function(value, key) {
output += key + ":" + value + " ";
});
return "'" + output + "'";
}
function generateFieldValues(list, rowItems, dataItem) {
_.forEach(list, function(field) {
var data = "", fieldValue = "", curItem = null;
if (field.indexOf(".")) {
field = field.split(".");
curItem = dataItem;
// deep access to obect property
_.forEach(field, function(prop) {
if (curItem !== null && curItem !== undefined) {
curItem = curItem[prop];
}
});
data = curItem;
} else {
data = dataItem[field];
}
fieldValue = data !== null ? data : " ";
if (fieldValue !== undefined && angular.isObject(fieldValue)) {
fieldValue = _objectToString(fieldValue);
}
rowItems.push(fieldValue);
});
return rowItems;
}
function _bodyData() {
var body = "";
_.forEach(scope.data, function(dataItem) {
var rowItems = [];var nestedBody = "";
rowItems = generateFieldValues(fields, rowItems, dataItem);
//Nested Json body generation start
if (scope.nestedDataProperty && dataItem[scope.nestedDataProperty].length) {
_.forEach(dataItem[scope.nestedDataProperty], function(nestedDataItem) {
var nestedRowItems = [""];
nestedRowItems = generateFieldValues(nestedFields, nestedRowItems, nestedDataItem);
nestedBody += nestedRowItems.toString() + "\n";
});
var strData = _convertToExcel(nestedBody, nestedHeader);
body += rowItems.toString() + "\n" + strData;
////Nested Json body generation end
} else {
body += rowItems.toString() + "\n";
}
});
return body;
}
$timeout(function() {
element.bind("click", function() {
var bodyData = _bodyData();
var strData = _convertToExcel(bodyData, header);
var blob = new Blob([strData], {
type: "text/plain;charset=utf-8"
});
return saveAs(blob, [scope.filename + ".csv"]);
});
}, 1000);
}
};
});
HTML code:
<button ng-json-export-excel data="dataList" nested-data-property="nested" report-fields="{id: 'ID Heder', name: 'Name Header', price: 'Price Head', 'publisher.name': 'Publisher Head', 'publisher.company': 'Company Head'}" nested-report-fields="{name: 'Nested Name', company: 'Nested Company'}">Json Export</button>
angular.module("exampleModule", [])
.controller('exampleController', function ($scope) {
$scope.dataList = [
{
id: 1,
name: 'github',
price: '200$',
publisher: {
name: 'hieutran',
company: 'Dtag-VN'
},
nested:[
{
name: 'name1',
company: 'company1'
},
{
name: 'name2',
company: 'company2'
}]
},
{
id: 2,
name: 'twitter',
price: '500$',
publisher: {
name: 'twitter tran',
company: 'Canada'
},
nested:[]
},
{
id: 3,
name: 'google',
price: '300$',
publisher: {
name: 'tran',
company: 'Vietname'
},
nested:[
{
name: 'name3',
company: 'company3'
},
{
name: 'name4',
company: 'company4'
}]
}
]
})
.directive("ngGridJsonExportExcel", function($timeout) {
return {
restrict: "AE",
scope: {
data: "=",
filename: "=?",
reportFields: "=",
nestedReportFields: "=",
nestedDataProperty: "@"
},
link: function(scope, element) {
scope.filename = !!scope.filename ? scope.filename : "export-excel";
function generateFieldsAndHeaders(fieldsObject, fields, header) {
_.forEach(fieldsObject, function(field, key) {
if (!field || !key) {
throw new Error("error json report fields");
}
fields.push(key);
header.push(field);
});
return {fields: fields, header: header};
}
var fieldsAndHeader = generateFieldsAndHeaders(scope.reportFields, [], []);
var fields = fieldsAndHeader.fields, header = fieldsAndHeader.header;
var nestedFieldsAndHeader = generateFieldsAndHeaders(scope.nestedReportFields, [], [""]);
var nestedFields = nestedFieldsAndHeader.fields, nestedHeader = nestedFieldsAndHeader.header;
function _convertToExcel(body, header) {
return header + "\n" + body;
}
function _objectToString(object) {
var output = "";
_.forEach(object, function(value, key) {
output += key + ":" + value + " ";
});
return "'" + output + "'";
}
function generateFieldValues(list, rowItems, dataItem) {
_.forEach(list, function(field) {
var data = "", fieldValue = "", curItem = null;
if (field.indexOf(".")) {
field = field.split(".");
curItem = dataItem;
// deep access to obect property
_.forEach(field, function(prop) {
if (curItem !== null && curItem !== undefined) {
curItem = curItem[prop];
}
});
data = curItem;
} else {
data = dataItem[field];
}
fieldValue = data !== null ? data : " ";
if (fieldValue !== undefined && angular.isObject(fieldValue)) {
fieldValue = _objectToString(fieldValue);
}
rowItems.push(fieldValue);
});
return rowItems;
}
function _bodyData() {
var body = "";
_.forEach(scope.data, function(dataItem) {
var rowItems = [];var nestedBody = "";
rowItems = generateFieldValues(fields, rowItems, dataItem);
//Nested Json body generation start
if (scope.nestedDataProperty && dataItem[scope.nestedDataProperty].length) {
_.forEach(dataItem[scope.nestedDataProperty], function(nestedDataItem) {
var nestedRowItems = [""];
nestedRowItems = generateFieldValues(nestedFields, nestedRowItems, nestedDataItem);
nestedBody += nestedRowItems.toString() + "\n";
});
var strData = _convertToExcel(nestedBody, nestedHeader);
body += rowItems.toString() + "\n" + strData;
////Nested Json body generation end
} else {
body += rowItems.toString() + "\n";
}
});
return body;
}
$timeout(function() {
element.bind("click", function() {
var bodyData = _bodyData();
var strData = _convertToExcel(bodyData, header);
var blob = new Blob([strData], {
type: "text/plain;charset=utf-8"
});
return saveAs(blob, [scope.filename + ".csv"]);
});
}, 1000);
}
};
});
HTML code:
<button ng-json-export-excel data="dataList" nested-data-property="nested" report-fields="{id: 'ID Heder', name: 'Name Header', price: 'Price Head', 'publisher.name': 'Publisher Head', 'publisher.company': 'Company Head'}" nested-report-fields="{name: 'Nested Name', company: 'Nested Company'}">Json Export</button>
