SpringMVC接收xml格式参数

不念不忘少年蓝@ 2022-05-21 09:15 404阅读 0赞

## 问题 ##

在对接银行过程中，银行回调时请求参数格式为xml，要求返回格式也为xml(CDATA包裹)，利用SpringMVC该怎么处理。

## 测试 ##

xml格式参数为：

提供接受参数的对象

@Data //lombok注解，无需手动添加getter/setter
    @XmlRootElement(name = "xml") 
    @ToString //lombok注解，无需手动添加toString方法
    public class XmlRequest { 
    
        private String order_id;
        private String sign;
        private String data;
        private String uuid;
    }

返回参数对象

@Data
    @XmlRootElement(name = "xml")
    public class XmlResponse { 
    
        private String code;
        private String msg;
    
        public XmlResponse() { 
        }
    
        public XmlResponse(String code, String msg) { 
            this.code = code;
            this.msg = msg;
        }
    }

处理xml格式参数接口

/** * 处理xml格式参数 * * @param xmlRequest * @return */
        @RequestMapping(value = "/handleXmlParam", produces = { "application/xml;charset=UTF-8"})
        @ResponseBody
        public String handleXmlParam(@RequestBody XmlRequest xmlRequest) throws Exception { 
            logger.info("XmlRequest:{}", xmlRequest);
            XmlResponse response = new XmlResponse("1", "success");
            return ojbectToXmlWithCDATA(XmlResponse.class, response);
        }
    
        /** * Java对象转换为CDATA包裹XML * * @param clazz * @param obj * @return * @throws Exception */
        public static String ojbectToXmlWithCDATA(Class clazz, Object obj) throws Exception { 
    
            JAXBContext context = JAXBContext.newInstance(clazz);
            // 配置OutputFormat处理CDATA
            OutputFormat of = new OutputFormat();
            of.setCDataElements(new String[]{ "^code", "^msg"});
            of.setPreserveSpace(true);
            of.setIndenting(true);
            // 创建序列化
            ByteArrayOutputStream op = new ByteArrayOutputStream();
            XMLSerializer serializer = new XMLSerializer(op, of);
            SAXResult result = new SAXResult(serializer.asContentHandler());
            Marshaller mar = context.createMarshaller();
            mar.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
            mar.marshal(obj, result);
    
            return op.toString("utf-8");
        }

使用Postman模拟请求，响应也为xml格式

![postman模拟xml格式参数请求][postman_xml]

日志打印XmlRequest对象，说明参数已经正常接收

XmlRequest:XmlRequest(order_id=m180702762500000201807031109358406949, sign=wxd2a1d0594082a206, data={"application_status":"review"}, uuid=123654978945)

[postman_xml]: /images/20220521/2d245123b1364de3baf5ecc93b04be7b.png