一、引入maven包

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

二、创建pojo

使用lombok快速创建

xml转换核心注解
@JacksonXmlElementWrapper：可以将列表数据转为XML节点。；
@JacksonXmlRootElement：指定生成xml根标签的名字；
@JacksonXmlProperty：指定包装标签名，或者指定标签内部属性名；
@JacksonXmlText：指定当前这个值，没有xml标签包裹。

package com.erfou.entity;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
@JacksonXmlRootElement(localName = "xml")
public class PaylinxCallBack { 
    @JacksonXmlProperty(localName = "bank_type")
    private String bank_type;
    @JacksonXmlProperty(localName = "cash_fee")
    private String cash_fee;
    @JacksonXmlProperty(localName = "cash_fee_type")
    private String cash_fee_type;
    @JacksonXmlProperty(localName = "fee_type")
    private String fee_type;
    @JacksonXmlProperty(localName = "result_code")
    private String result_code;
    @JacksonXmlProperty(localName = "return_code")
    private String return_code;
    @JacksonXmlProperty(localName = "time_end")
    private String time_end;
    @JacksonXmlProperty(localName = "total_fee")
    private String total_fee;
    @JacksonXmlProperty(localName = "transaction_id")
    private String transaction_id;
    @JacksonXmlProperty(localName = "mch_id")
    private String mch_id;
    @JacksonXmlProperty(localName = "nonce_str")
    private String nonce_str;
    @JacksonXmlProperty(localName = "out_trade_no")
    private String out_trade_no;
    @JacksonXmlProperty(localName = "platform")
    private String platform;
    @JacksonXmlProperty(localName = "sign")
    private String sign;
}

1.Java对象转XML

使用XmlMapper 的writeValueAsString方法进行转换

@GetMapping("/toxml")
    public void toXml(){ 
        PaylinxCallBack paylinxCallBack = new PaylinxCallBack();
        paylinxCallBack.setSign("963852741");
        XmlMapper xmlMapper = new XmlMapper();
        try { 
            String xml = xmlMapper.writeValueAsString(paylinxCallBack);
            System.out.println(xml);
        } catch (JsonProcessingException e) { 
            e.printStackTrace();
        }
    }

转换结果

<xml>
    <bank_type/>
    <cash_fee/>
    <cash_fee_type/>
    <fee_type/>
    <result_code/
    ><return_code/>
    <time_end/>
    <total_fee/>
    <transaction_id/>
    <mch_id/>
    <nonce_str/>
    <out_trade_no/>
    <platform/>
    <sign>963852741</sign>
</xml>

2.XML转Java对象

使用xmlMapper.readValue进行转化

@GetMapping("/topojo")
    public void toPojo() throws IOException { 
        String xml="<?xml version=\"1.0\"?>\n" +
                "<xml>\n" +
                " <bank_type><![CDATA[CFT]]></bank_type>\n" +
                " <cash_fee><![CDATA[3198]]></cash_fee>\n" +
                " <cash_fee_type><![CDATA[CNY]]></cash_fee_type>\n" +
                " <fee_type><![CDATA[AUD]]></fee_type>\n" +
                " <result_code><![CDATA[SUCCESS]]></result_code>\n" +
                " <return_code><![CDATA[SUCCESS]]></return_code>\n" +
                " <time_end><![CDATA[20190218175517]]></time_end>\n" +
                " <total_fee><![CDATA[659]]></total_fee>\n" +
                " <transaction_id><![CDATA[4200000268201902183412918770]]></transaction_id>\n" +
                " <mch_id><![CDATA[1234567]]></mch_id>\n" +
                " <nonce_str><![CDATA[6saqecbgail2c08kgkgd1mrdfge8i6bb]]></nonce_str>\n" +
                " <out_trade_no><![CDATA[A1550523295]]></out_trade_no>\n" +
                " <platform><![CDATA[wechat]]></platform>\n" +
                " <sign><![CDATA[9E86F28A2C6536509A133DC085AD0203]]></sign>\n" +
                "</xml>";
        XmlMapper xmlMapper = new XmlMapper();
        xmlMapper.setDefaultUseWrapper(false);
        xmlMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        PaylinxCallBack paylinxCallBack=xmlMapper.readValue(xml,PaylinxCallBack.class);
        System.out.println(paylinxCallBack.toString());
    }

结果

PaylinxCallBack(bank_type=CFT, cash_fee=3198, cash_fee_type=CNY, fee_type=AUD, result_code=SUCCESS, return_code=SUCCESS, time_end=20190218175517, total_fee=659, transaction_id=4200000268201902183412918770, mch_id=1234567, nonce_str=6saqecbgail2c08kgkgd1mrdfge8i6bb, out_trade_no=A1550523295, platform=wechat, sign=9E86F28A2C6536509A133DC085AD0203)