1.添加依赖

        <dependency>
            <groupId>com.fasterxml.jackson.dataformat</groupId>
            <artifactId>jackson-dataformat-xml</artifactId>
        </dependency>

2.继承WebMvcConfigurationSupport，MappingJackson2XmlHttpMessageConverter设置接收xml

@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {

    @Resource
    private AuthorizationInterceptor authorizationInterceptor;

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("doc.html")//swagger过滤防止404
                .addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    //定义时间格式转换器，json数据中long型日期转为特定格式
    @Bean
    public MappingJackson2HttpMessageConverter jackson2HttpMessageConverter() {
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        mapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));
        converter.setObjectMapper(mapper);
        return converter;
    }

    /**
     * 添加自定义的Converters和Formatters.
     */
    @Override
    protected void addFormatters(FormatterRegistry registry) {
        registry.addConverter(new DateConverterConfig());
    }


    /**
     * 设置响应的字符集，防止中文乱码
     *
     * @return
     */
    @Bean
    public HttpMessageConverter<String> responseBodyConverter() {
        StringHttpMessageConverter converter = new StringHttpMessageConverter(Charset.forName("UTF-8"));
        return converter;
    }

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        super.configureMessageConverters(converters);
        converters.add(responseBodyConverter());
        converters.add(jackson2HttpMessageConverter());

        //接收XML请求数据
        Jackson2ObjectMapperBuilder builder = Jackson2ObjectMapperBuilder.xml();
        builder.indentOutput(true);
        converters.add(new MappingJackson2XmlHttpMessageConverter(builder.build()));
    }
}

3.xml映射实体

package com.mall.wx.util;

import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;

/**
 * 微信支付结果异步推送XML数据包实体
 */
@JacksonXmlRootElement(localName = "xml")
public class PayResultXMLEntity {

    // 返回状态码
    @JacksonXmlProperty(localName = "return_code")
    protected String returnCode;

    // 返回信息
    @JacksonXmlProperty(localName = "return_msg")
    protected String returnMsg;

    // 业务结果
    @JacksonXmlProperty(localName = "result_code")
    protected String resultCode;

    // 商户订单号
    @JacksonXmlProperty(localName = "out_trade_no")
    protected String outTradeNo;

    // 支付完成时间
    @JacksonXmlProperty(localName = "time_end")
    protected String timeEnd;

    // 微信支付订单号
    @JacksonXmlProperty(localName = "transaction_id")
    protected String transactionId;

    // 订单金额
    @JacksonXmlProperty(localName = "total_fee")
    protected String totalFee;

    // 商户号
    @JacksonXmlProperty(localName = "mch_id")
    protected String mchId;

    public void setReturnCode(String returnCode) {
        this.returnCode = returnCode;
    }

    public String getReturnMsg() {
        return returnMsg;
    }

    public void setReturnMsg(String returnMsg) {
        this.returnMsg = returnMsg;
    }

    public String getReturnCode() {
        return returnCode;
    }

    public String getResultCode() {
        return resultCode;
    }

    public void setResultCode(String resultCode) {
        this.resultCode = resultCode;
    }

    public String getOutTradeNo() {
        return outTradeNo;
    }

    public void setOutTradeNo(String outTradeNo) {
        this.outTradeNo = outTradeNo;
    }

    public String getTimeEnd() {
        return timeEnd;
    }

    public void setTimeEnd(String timeEnd) {
        this.timeEnd = timeEnd;
    }

    public String getTransactionId() {
        return transactionId;
    }

    public void setTransactionId(String transactionId) {
        this.transactionId = transactionId;
    }

    public String getTotalFee() {
        return totalFee;
    }

    public void setTotalFee(String totalFee) {
        this.totalFee = totalFee;
    }

    public String getMchId() {
        return mchId;
    }

    public void setMchId(String mchId) {
        this.mchId = mchId;
    }

    @Override
    public String toString() {
        return "PayResultXMLEntity{" +
                "returnCode='" + returnCode + '\'' +
                ", returnMsg='" + returnMsg + '\'' +
                ", resultCode='" + resultCode + '\'' +
                ", outTradeNo='" + outTradeNo + '\'' +
                ", timeEnd='" + timeEnd + '\'' +
                ", transactionId='" + transactionId + '\'' +
                ", totalFee='" + totalFee + '\'' +
                ", mchId='" + mchId + '\'' +
                '}';
    }
}

4.controller

 @PostMapping(value = "/notify")
 public String notify(@RequestBody PayResultXMLEntity resultXMLEntity) {

 }