springboot使用jackson实现pojo和xml互相转换

本是古典何须时尚 2022-10-15 14:00 1276阅读 0赞

### springboot使用jackson实现pojo和xml互相转换 ###

*  一、引入maven包
 *  二、创建pojo
 *   *  1.Java对象转XML
     *  2.XML转Java对象

# 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

## 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)