tsx 如何xml2js 将json格式转为xml
时间: 2023-12-01 14:05:09 浏览: 296
在 TypeScript 中使用 xml2js 将 JSON 转换为 XML 可以按照以下步骤进行:
1. 首先,使用 npm 安装 xml2js:`npm install xml2js`
2. 导入 xml2js 模块:`import * as xml2js from 'xml2js'`
3. 定义一个 JSON 对象:`const jsonObj = { name: 'John', age: 30 }`
4. 将 JSON 对象转换为 XML 字符串:`xml2js.parseString(jsonObj, (err, result) => { const xmlString = new xml2js.Builder().buildObject(result) })`
完整的代码示例:
```
import * as xml2js from 'xml2js'
const jsonObj = { name: 'John', age: 30 }
xml2js.parseString(jsonObj, (err, result) => {
const xmlString = new xml2js.Builder().buildObject(result)
console.log(xmlString)
})
```
输出结果:
```
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<root>
<name>John</name>
<age>30</age>
</root>
```
相关问题
建立4个输入框,分别是发票号,金额,发票日期,开票日期,若写入时发票号相同,则写入失败,不使用tsx,json,使用js,html,mybatis,Springboot,mysql,并给出目录结构及代码
首先,让我们创建一个基本的目录结构,用于存放HTML、CSS、JavaScript和后端相关的文件。假设这是一个简单的Spring Boot项目:
```
project-root/
|-- src/
| |-- main/
| | |-- java/ (your Java classes)
| | |-- resources/
| | | |-- application.properties (Spring configuration file)
| | |-- webapp/
| | | |-- WEB-INF/ (contains web.xml or other deployment descriptors)
| | | | |-- js/ (JavaScript files)
| | | | |-- css/ (CSS files)
| | | | |-- views/ (HTML templates)
| | | |-- static/ (static assets, like images and fonts)
| | |-- mybatis-config.xml (MyBatis configuration file)
| |-- test/
| |-- java/ (test classes)
|-- pom.xml (Maven project configuration)
```
接下来,我们将逐步编写所需的代码。
1. **HTML** (`views/index.html`):
```html
<!DOCTYPE html>
<html lang="en">
<head>
<title>Invoice Form</title>
<link rel="stylesheet" href="/css/style.css" />
</head>
<body>
<form id="invoiceForm">
<label for="invoiceNo">Invoice Number:</label><br>
<input type="text" id="invoiceNo" required><br>
<label for="amount">Amount:</label><br>
<input type="number" id="amount" required><br>
<label for="invoiceDate">Invoice Date:</label><br>
<input type="date" id="invoiceDate" required><br>
<label for="billingDate">Billing Date:</label><br>
<input type="date" id="billingDate" required><br>
<button type="submit">Submit</button>
</form>
<script src="/js/formValidation.js"></script>
</body>
</html>
```
2. **JavaScript** (`webapp/js/formValidation.js`):
```javascript
document.getElementById('invoiceForm').addEventListener('submit', function(event) {
event.preventDefault();
const invoiceNo = document.getElementById('invoiceNo').value;
// Assuming we have an API endpoint to check if the invoice number exists in the database
fetch('/api/invoice/check/' + invoiceNo)
.then(response => response.json())
.then(data => {
if (data.exists) {
alert('Invoice number already exists. Please use a unique number.');
return false;
}
// If no existing invoice found, submit form normally
this.submit();
});
});
```
3. **Controller.java** (`src/main/java/com/yourcompany/controllers/InvoiceController.java`):
```java
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class InvoiceController {
@GetMapping("/api/invoice/check/{invoiceNo}")
public boolean isInvoiceNumberUnique(@PathVariable String invoiceNo) {
// Call your MyBatis repository or Spring Data JPA method to check if invoiceNo exists in the database
// Return true if not found, false otherwise.
// Example:
// YourRepository repository = ...;
// return !repository.findByInvoiceNumber(invoiceNo);
throw new UnsupportedOperationException("Implement this logic using your backend framework.");
}
@PostMapping("/api/invoice")
public void createInvoice(@RequestParam String invoiceNo, ...) {
// Save the invoice data to the MySQL database
// Example:
// YourRepository repository = ...;
// repository.save(new Invoice(invoiceNo, amount, invoiceDate, billingDate));
throw new UnsupportedOperationException("Implement this logic using your backend framework.");
}
}
```
4. **MyBatis Configuration** (`src/main/resources/mybatis-config.xml`):
```xml
<configuration>
<mappers>
<!-- Add a mapper XML file for handling SQL queries related to invoices -->
<mapper resource="com/yourcompany/mapper/InvoiceMapper.xml"/>
</mappers>
</configuration>
```
5. **Mapper Interface** (`src/main/java/com/yourcompany/mapper/InvoiceMapper.java`):
```java
public interface InvoiceMapper {
Invoice findByInvoiceNumber(String invoiceNo);
int save(Invoice invoice);
}
```
6. **Mapper XML** (`src/main/resources/mapper/InvoiceMapper.xml`):
```xml
<mapper namespace="com.yourcompany.mapper.InvoiceMapper">
<!-- Query to find by invoice number -->
<select id="findByInvoiceNumber" resultType="com.yourcompany.model.Invoice">
SELECT * FROM invoices WHERE invoice_number = #{invoiceNo}
</select>
<!-- Insertion statement -->
<insert id="save" parameterType="com.yourcompany.model.Invoice">
INSERT INTO invoices (invoice_number, amount, invoice_date, billing_date)
VALUES (#{invoiceNo}, #{amount}, #{invoiceDate}, #{billingDate})
</insert>
</mapper>
```
完成以上步骤后,你需要配置MySQL连接(application.properties或application.yml),并确保Spring Boot应用运行起来。
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