在javascript、typescript中将json转换为csv
您好,我正在尝试将一些json转换为cvs,但我没有解析它的运气,我已经找到了一些简单json的解决方案,如下所示在javascript、typescript中将json转换为csv,javascript,json,typescript,csv,Javascript,Json,Typescript,Csv,您好,我正在尝试将一些json转换为cvs,但我没有解析它的运气,我已经找到了一些简单json的解决方案,如下所示 json = [ { name: "Anil Singh", age: 33, average: 98, approved: true, description: "I am active blogger and Author." }, { name: 'Reena Singh',
json = [
{
name: "Anil Singh",
age: 33,
average: 98,
approved: true,
description: "I am active blogger and Author."
},
{
name: 'Reena Singh',
age: 28,
average: 99,
approved: true,
description: "I am active HR."
},
{
name: 'Aradhya',
age: 4,
average: 99,
approved: true,
description: "I am engle."
},
];
convertToCSV(objArray, headerList): string {
const array = typeof objArray !== 'object' ? JSON.parse(objArray) : objArray;
let str = '';
let row = 'S.No,';
// tslint:disable-next-line: forin
for (const index in headerList) {
row += headerList[index] + ',';
}
row = row.slice(0, -1);
str += row + '\r\n';
for (let i = 0; i < array.length; i++) {
let line = (i + 1) + '';
// tslint:disable-next-line: forin
for (const index in headerList) {
const head = headerList[index];
line += ',' + array[i][head];
}
str += line + '\r\n';
}
return str;
}
const csvData = this.convertToCSV(json, ['name', 'age', 'average', 'approved', 'description']);
json = [{
"customer": {
"emailAddress": "test@gmail.com"
},
"recommendationProductDetails": [{
"productId": "4288",
"title": "Title 1",
"imageWebAddress": "http://url.com/GetImage/2956",
"webAddress": "http://url.com/",
"description": "Description 23"
}, {
"productId": "8888",
"title": "Title 8",
"imageWebAddress": "http://url.com/GetImage/2333",
"webAddress": "http://url.com/",
"description": "Description 55"
}]
},
{
"customer": {
"emailAddress": "test33@gmail.com"
},
"recommendationProductDetails": [{
"productId": "3333",
"title": "Title 33",
"imageWebAddress": "http://url.com/GetImage/333",
"webAddress": "http://url.com/",
"description": "Description 333"
}, {
"productId": "1111",
"title": "Title 111",
"imageWebAddress": "http://url.com/GetImage/111",
"webAddress": "http://url.com/",
"description": "Description 111"
}]
}
];
我有这样的方法
json = [
{
name: "Anil Singh",
age: 33,
average: 98,
approved: true,
description: "I am active blogger and Author."
},
{
name: 'Reena Singh',
age: 28,
average: 99,
approved: true,
description: "I am active HR."
},
{
name: 'Aradhya',
age: 4,
average: 99,
approved: true,
description: "I am engle."
},
];
convertToCSV(objArray, headerList): string {
const array = typeof objArray !== 'object' ? JSON.parse(objArray) : objArray;
let str = '';
let row = 'S.No,';
// tslint:disable-next-line: forin
for (const index in headerList) {
row += headerList[index] + ',';
}
row = row.slice(0, -1);
str += row + '\r\n';
for (let i = 0; i < array.length; i++) {
let line = (i + 1) + '';
// tslint:disable-next-line: forin
for (const index in headerList) {
const head = headerList[index];
line += ',' + array[i][head];
}
str += line + '\r\n';
}
return str;
}
const csvData = this.convertToCSV(json, ['name', 'age', 'average', 'approved', 'description']);
json = [{
"customer": {
"emailAddress": "test@gmail.com"
},
"recommendationProductDetails": [{
"productId": "4288",
"title": "Title 1",
"imageWebAddress": "http://url.com/GetImage/2956",
"webAddress": "http://url.com/",
"description": "Description 23"
}, {
"productId": "8888",
"title": "Title 8",
"imageWebAddress": "http://url.com/GetImage/2333",
"webAddress": "http://url.com/",
"description": "Description 55"
}]
},
{
"customer": {
"emailAddress": "test33@gmail.com"
},
"recommendationProductDetails": [{
"productId": "3333",
"title": "Title 33",
"imageWebAddress": "http://url.com/GetImage/333",
"webAddress": "http://url.com/",
"description": "Description 333"
}, {
"productId": "1111",
"title": "Title 111",
"imageWebAddress": "http://url.com/GetImage/111",
"webAddress": "http://url.com/",
"description": "Description 111"
}]
}
];
我遇到的一个复杂对象的问题如下
json = [
{
name: "Anil Singh",
age: 33,
average: 98,
approved: true,
description: "I am active blogger and Author."
},
{
name: 'Reena Singh',
age: 28,
average: 99,
approved: true,
description: "I am active HR."
},
{
name: 'Aradhya',
age: 4,
average: 99,
approved: true,
description: "I am engle."
},
];
convertToCSV(objArray, headerList): string {
const array = typeof objArray !== 'object' ? JSON.parse(objArray) : objArray;
let str = '';
let row = 'S.No,';
// tslint:disable-next-line: forin
for (const index in headerList) {
row += headerList[index] + ',';
}
row = row.slice(0, -1);
str += row + '\r\n';
for (let i = 0; i < array.length; i++) {
let line = (i + 1) + '';
// tslint:disable-next-line: forin
for (const index in headerList) {
const head = headerList[index];
line += ',' + array[i][head];
}
str += line + '\r\n';
}
return str;
}
const csvData = this.convertToCSV(json, ['name', 'age', 'average', 'approved', 'description']);
json = [{
"customer": {
"emailAddress": "test@gmail.com"
},
"recommendationProductDetails": [{
"productId": "4288",
"title": "Title 1",
"imageWebAddress": "http://url.com/GetImage/2956",
"webAddress": "http://url.com/",
"description": "Description 23"
}, {
"productId": "8888",
"title": "Title 8",
"imageWebAddress": "http://url.com/GetImage/2333",
"webAddress": "http://url.com/",
"description": "Description 55"
}]
},
{
"customer": {
"emailAddress": "test33@gmail.com"
},
"recommendationProductDetails": [{
"productId": "3333",
"title": "Title 33",
"imageWebAddress": "http://url.com/GetImage/333",
"webAddress": "http://url.com/",
"description": "Description 333"
}, {
"productId": "1111",
"title": "Title 111",
"imageWebAddress": "http://url.com/GetImage/111",
"webAddress": "http://url.com/",
"description": "Description 111"
}]
}
];
有人能帮我在cvs中格式化这个json吗,谢谢将这样复杂的对象转换成CSV有一些小的解决方法 希望下面的代码会有帮助
var jsondata = [{
"customer": {
"emailAddress": "test@gmail.com"
},
"recommendationProductDetails": [{
"productId": "4288",
"title": "Title 1",
"imageWebAddress": "http://url.com/GetImage/2956",
"webAddress": "http://url.com/",
"description": "Description 23"
}, {
"productId": "8888",
"title": "Title 8",
"imageWebAddress": "http://url.com/GetImage/2333",
"webAddress": "http://url.com/",
"description": "Description 55"
}]
},
{
"customer": {
"emailAddress": "test33@gmail.com"
},
"recommendationProductDetails": [{
"productId": "3333",
"title": "Title 33",
"imageWebAddress": "http://url.com/GetImage/333",
"webAddress": "http://url.com/",
"description": "Description 333"
}, {
"productId": "1111",
"title": "Title 111",
"imageWebAddress": "http://url.com/GetImage/111",
"webAddress": "http://url.com/",
"description": "Description 111"
}]
}
];
function flattenObjectKeys(ob) {
var toReturn = {};
for (var i in ob) {
if (!ob.hasOwnProperty(i)) continue;
if ((typeof ob[i]) == 'object' && ob[i] !== null) {
var flatObject = flattenObjectKeys(ob[i]);
for (var x in flatObject) {
if (!flatObject.hasOwnProperty(x)) continue;
toReturn[i + '.' + x] = flatObject[x];
}
} else {
toReturn[i] = ob[i];
}
}
return toReturn;
}
function transformToCSV(jsondata, keysArr=[])
{
var csvData = "";
var itemList = [];
jsondata.forEach(customer=>{
itemList.push(flattenObjectKeys(customer));
})
var newKeysNames = Object.keys(itemList[0]);
var keysMap = {};
newKeysNames.forEach(newKeyName => {
keysArr.forEach((oldKeyName)=>{
let findName = "."+ oldKeyName;
if( String(newKeyName).indexOf(findName) >= 0)
{
keysMap[oldKeyName] = newKeyName;
}
})
});
// console.log("Keys Map === ", keysMap);
itemList.forEach((item)=>{
keysArr.forEach(keyName=>{
csvData+=item[keysMap[keyName]] +",";
})
csvData+='\r\n';
})
return csvData;
}
console.log("====================");
console.log(transformToCSV(jsondata, ['title','webAddress','description']));
console.log("====================");
将这样复杂的对象转换为CSV有一些解决方法 希望下面的代码会有帮助
var jsondata = [{
"customer": {
"emailAddress": "test@gmail.com"
},
"recommendationProductDetails": [{
"productId": "4288",
"title": "Title 1",
"imageWebAddress": "http://url.com/GetImage/2956",
"webAddress": "http://url.com/",
"description": "Description 23"
}, {
"productId": "8888",
"title": "Title 8",
"imageWebAddress": "http://url.com/GetImage/2333",
"webAddress": "http://url.com/",
"description": "Description 55"
}]
},
{
"customer": {
"emailAddress": "test33@gmail.com"
},
"recommendationProductDetails": [{
"productId": "3333",
"title": "Title 33",
"imageWebAddress": "http://url.com/GetImage/333",
"webAddress": "http://url.com/",
"description": "Description 333"
}, {
"productId": "1111",
"title": "Title 111",
"imageWebAddress": "http://url.com/GetImage/111",
"webAddress": "http://url.com/",
"description": "Description 111"
}]
}
];
function flattenObjectKeys(ob) {
var toReturn = {};
for (var i in ob) {
if (!ob.hasOwnProperty(i)) continue;
if ((typeof ob[i]) == 'object' && ob[i] !== null) {
var flatObject = flattenObjectKeys(ob[i]);
for (var x in flatObject) {
if (!flatObject.hasOwnProperty(x)) continue;
toReturn[i + '.' + x] = flatObject[x];
}
} else {
toReturn[i] = ob[i];
}
}
return toReturn;
}
function transformToCSV(jsondata, keysArr=[])
{
var csvData = "";
var itemList = [];
jsondata.forEach(customer=>{
itemList.push(flattenObjectKeys(customer));
})
var newKeysNames = Object.keys(itemList[0]);
var keysMap = {};
newKeysNames.forEach(newKeyName => {
keysArr.forEach((oldKeyName)=>{
let findName = "."+ oldKeyName;
if( String(newKeyName).indexOf(findName) >= 0)
{
keysMap[oldKeyName] = newKeyName;
}
})
});
// console.log("Keys Map === ", keysMap);
itemList.forEach((item)=>{
keysArr.forEach(keyName=>{
csvData+=item[keysMap[keyName]] +",";
})
csvData+='\r\n';
})
return csvData;
}
console.log("====================");
console.log(transformToCSV(jsondata, ['title','webAddress','description']));
console.log("====================");
json数组中的所有对象都相关吗?使用json.filter(obj=>obj.name)获取所有具有名称的文件。使用json.filter(obj=>obj.name).map(obj=>obj.name+“,”+obj.age)在名为age的过滤对象上获取csv。如果我是你,我会将数据粘贴到chrome控制台中,然后在那里玩代码-找到解决方案会更快。请你回答一下,谢谢。我们需要一个所需输出的示例。复杂、嵌套的JSON对象不能简单地用平面CSV格式表示。您希望您的CSV看起来像什么?如果我这样做:
[].concat.apply([],json.map(j=>j.recommendationProductDetails.map(c=>j.customer.emailAddress+,“+c.productId+,”+c.title+“\n”))
上面的数据-我得到了一个CSV数组-但我不确定你想要什么-希望有帮助-你需要在描述字段中处理特殊字符-对于逗号,我会在CSV输出中在这些字段周围加引号-但你可能还需要检查引号,和逗号等,并决定如何处理这些json数组中的所有对象是否相关?使用json.filter(obj=>obj.name)获取所有具有名称的文件。使用json.filter(obj=>obj.name).map(obj=>obj.name+“,”+obj.age)在名为age的过滤对象上获取csv。如果我是你,我会将数据粘贴到chrome控制台中,然后在那里玩代码-找到解决方案会更快。请你回答一下,谢谢。我们需要一个所需输出的示例。复杂、嵌套的JSON对象不能简单地用平面CSV格式表示。您希望您的CSV看起来像什么?如果我这样做:[].concat.apply([],json.map(j=>j.recommendationProductDetails.map(c=>j.customer.emailAddress+,“+c.productId+,”+c.title+“\n”))
上面的数据-我得到了一个CSV数组-但我不确定你想要什么-希望有帮助-你需要在描述字段中处理特殊字符-对于逗号,我会在CSV输出中在这些字段周围加引号-但你可能还需要检查引号,和逗号等,并决定如何处理这些数据