Java Controller获取PostXml请求参数

2020-08-27

76

2020-08-27 19:09:29

原创

# 流文本方式

```
    /**
     * 获取请求中的xml参数
     *
     * @throws IOException IOException
     */
    public static String getXmlParams(HttpServletRequest request) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream(), StandardCharsets.UTF_8));
        String buffer;
        // 存放请求内容
        StringBuffer xml = new StringBuffer();
        while ((buffer = br.readLine()) != null) {
            // 在页面中显示读取到的请求参数
            xml.append(buffer);
        }
        return xml.toString();
    }
```

这种方式获取到的是xml文本字符串，需要自行解析出对应参数。

# 注解方式

还有一种方式来源：[SpringMVC接收xml格式参数](https://www.liangzl.com/get-article-detail-7044.html)

通过注解解析成xml对象，代码如下：

xml格式参数为：

```
<xml>
  <order_id><![CDATA[201807031109358406949]]></order_id>
  <sign><![CDATA[f296ce56231147869aa413f1edef6403]]></sign>
  <data><![CDATA[{"application_status":"review"}]]></data>
  <uuid><![CDATA[123654978945]]></uuid>
</xml>
```

## 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

![](https://www.hyuga.top/img/2020/2020-08/7ce2a1b5-8365-423a-933b-d2e403b3e911.jpg)

## 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)
```

JAVA

Java Controller获取PostXml请求参数

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