如何使用XmlMapper序列化带命名空间的SOAP请求类？

1. 配置命名空间与元素前缀 #

首先在Suchen类所在包下创建package-info.java，全局指定命名空间的前缀映射：

@XmlSchema(
    namespace = "http://ws1.myapi.ch/",
    elementFormDefault = XmlNsForm.QUALIFIED,
    xmlns = {
        @XmlNs(prefix = "ws1", namespaceURI = "http://ws1.myapi.ch/"),
        @XmlNs(prefix = "soapenv", namespaceURI = "http://schemas.xmlsoap.org/soap/envelope/")
    }
)
package com.your.package; // 替换为你的实际包名

import javax.xml.bind.annotation.XmlNs;
import javax.xml.bind.annotation.XmlNsForm;
import javax.xml.bind.annotation.XmlSchema;

然后修改Suchen类的注解，为根元素和每个字段指定命名空间：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "benutzername",
    "passwort",
    "sprache",
    "datenname",
    "suchwerte",
    "einstellungen"
})
@XmlRootElement(name = "Suchen", namespace = "http://ws1.myapi.ch/")
public class Suchen {

    @XmlElement(name = "Benutzername", namespace = "http://ws1.myapi.ch/")
    protected String benutzername;
    @XmlElement(name = "Passwort", namespace = "http://ws1.myapi.ch/")
    protected String passwort;
    @XmlElement(name = "Sprache", namespace = "http://ws1.myapi.ch/")
    protected String sprache;
    @XmlElement(name = "Datenname", namespace = "http://ws1.myapi.ch/")
    protected String datenname;
    @XmlElement(name = "Suchwerte", namespace = "http://ws1.myapi.ch/")
    protected String suchwerte;
    @XmlElement(name = "Einstellungen", namespace = "http://ws1.myapi.ch/")
    protected String einstellungen;

    // 原有getter、setter、equals、hashCode方法保持不变
}

2. 构建SOAP信封结构 #

需要创建SOAP信封（Envelope）、头部（Header）、体部（Body）对应的POJO，才能完整生成符合要求的XML结构：

SoapEnvelope类

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "header",
    "body"
})
@XmlRootElement(name = "Envelope", namespace = "http://schemas.xmlsoap.org/soap/envelope/")
public class SoapEnvelope {

    @XmlElement(name = "Header", namespace = "http://schemas.xmlsoap.org/soap/envelope/")
    protected SoapHeader header;
    @XmlElement(name = "Body", namespace = "http://schemas.xmlsoap.org/soap/envelope/")
    protected SoapBody body;

    public SoapHeader getHeader() { return header; }
    public void setHeader(SoapHeader header) { this.header = header; }
    public SoapBody getBody() { return body; }
    public void setBody(SoapBody body) { this.body = body; }
}

SoapHeader类

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = "Header", namespace = "http://schemas.xmlsoap.org/soap/envelope/")
public class SoapHeader {}

SoapBody类

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "suchen"
})
@XmlRootElement(name = "Body", namespace = "http://schemas.xmlsoap.org/soap/envelope/")
public class SoapBody {

    @XmlElement(name = "Suchen", namespace = "http://ws1.myapi.ch/")
    protected Suchen suchen;

    public Suchen getSuchen() { return suchen; }
    public void setSuchen(Suchen suchen) { this.suchen = suchen; }
}

3. 生成完整SOAP请求XML #

组装POJO并通过XmlMapper生成XML：

// 初始化业务请求对象
Suchen suchen = new Suchen();
suchen.setBenutzername("test");
suchen.setPasswort("test");
suchen.setSprache("De");
suchen.setDatenname("Arten");
suchen.setEinstellungen("");

// 组装SOAP结构
SoapBody soapBody = new SoapBody();
soapBody.setSuchen(suchen);

SoapEnvelope soapEnvelope = new SoapEnvelope();
soapEnvelope.setHeader(new SoapHeader());
soapEnvelope.setBody(soapBody);

// 配置XmlMapper
XmlMapper xmlMapper = new XmlMapper();
xmlMapper.setPropertyNamingStrategy(PropertyNamingStrategy.UPPER_CAMEL_CASE);
xmlMapper.enable(ToXmlGenerator.Feature.WRITE_XML_DECLARATION);
xmlMapper.enable(ToXmlGenerator.Feature.WRITE_XML_NAMESPACES);

// 生成格式化后的XML
String requestData = xmlMapper.writerWithDefaultPrettyPrinter().writeValueAsString(soapEnvelope);

关键说明 #

• package-info.java用于全局绑定命名空间与前缀，确保所有关联元素自动使用指定前缀。
• 所有JAXB注解必须显式指定namespace属性，让元素与目标命名空间关联。
• 必须构建完整的SOAP信封POJO，否则只会生成Suchen单个元素，无法满足SOAP API的请求格式要求。

内容的提问来源于stack exchange，提问作者xetra11