使用MappingJackson2XmlView实现JSON到XML的视图转换

GET /api/products/123.xml

Accept: application/xml

<?xml version="1.0" encoding="UTF-8"?>
<product>
    <id>123</id>
    <name>Sample Product</name>
    <description>A sample product description.</description>
    <price>19.99</price>
</product>

fetch('/api/products/123.xml')
  .then(response => {
    if (!response.ok) {
        throw new Error('Network response was not ok');
    }
    return response.text(); // 假设响应体是XML文本
  })
  .then(xmlText => {
    const parser = new DOMParser();
    const xmlDoc = parser.parseFromString(xmlText, "application/xml");
    const productName = xmlDoc.getElementsByTagName("name")[0].childNodes[0].nodeValue;
    console.log(productName); // 处理或展示产品名称
  })
  .catch(error => {
    console.error('There was a problem with the fetch operation:', error);
  });

    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.servlet.View;
    import org.springframework.web.servlet.view.xml.MappingJackson2XmlView;

    @Configuration
    public class WebConfig {

        @Bean
        public View xmlViewResolver() {
            return new MappingJackson2XmlView();
        }
    }

    public class Product {
        private String id;
        private String name;
        private String description;
        private double price;

        // 标准getter和setter方法
    }

    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.servlet.ModelAndView;

    @Controller
    public class ProductController {

        @GetMapping("/products/{productId}.xml")
        public ModelAndView getProductDetails(@PathVariable String productId) {
            Product product = productService.getProductById(productId); 
            //关键点，自定义配置需要渲染的view对象
            ModelAndView modelAndView = new ModelAndView(new MappingJackson2XmlView());
            modelAndView.addObject("product", product);
            return modelAndView;
        }
    }

    public class ProductService {

        public Product getProductById(String productId) {
            // 从数据库或数据源获取商品数据
            return new Product(); // 返回商品对象
        }
    }