XML到POJO JAVA

Question

我已阅读与此问题相关的其他帖子但我无法解决我的问题。我尝试将以下XML String转换为JAVA类，但是当我尝试使用getParam1()方法访问param1时，它返回null并且我不确定原因。

XML字符串：

<?xml version="1.0" encoding="utf-8"?>
<REQUERYTRXRESPONSE xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/">
 <param1>3gbahtJf1y85Oks4HrPLkqTQZV8Yg8pIhdXOrZ8pLGJP3FLwqKlIzIl/GgUpGvFaw4MC4SV+4pCudmVq+apIMIJJS4PrVyUx4T0ZO/Tsui4ZqCn62dLAG0DVhBVz2ZasF4yr7CRYnk47FWS0RywXmA==</param1>
 <param2>lO4ismiJwsvBiHQGW/UwCA==</param2>
 <param3 />
</REQUERYTRXRESPONSE>

Java类：

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(namespace = "http://tempuri.org/", name =  "REQUERYTRXRESPONSE")
@XmlAccessorType(XmlAccessType.PROPERTY)
public class REQUERYTRXRESPONSE {
private String param1;
private String param2;
private String param3;

@XmlElement(required = true, name = "param1")
public String getParam1() {
    return param1;
}
public void setParam1(String param1) {
    this.param1 = param1;
}

@XmlElement(required = true, name = "param2")
public String getParam2() {
    return param2;
}
public void setParam2(String param2) {
    this.param2 = param2;
}

@XmlElement(required = true, name = "param3")
public String getParam3() {
    return param3;
}
public void setParam3(String param3) {
    this.param3 = param3;
}
}

XML to Java类代码：

HttpRequest httpRequest = HttpRequest.get();

    if (httpRequest.ok()) {
        String response = httpRequest.body();

        System.out.println(response);

        JAXBContext jaxbContext = JAXBContext.newInstance(REQUERYTRXRESPONSE.class);
        Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
        REQUERYTRXRESPONSE requerytrxresponse = (REQUERYTRXRESPONSE) unmarshaller.unmarshal(new StringReader(response));


        System.out.println((String) requerytrxresponse.getParam1()); // returns null
    }   

Answer 1

管理好了解。

In [142]: Table1 = FamilyVsWWTotal.copy()

In [143]: Table1['Region'] = 'K'

In [144]: Table1
Out[144]:
  Country      date Region
0     USA  2011-4-3      K
1     CAN  2011-3-5      K
2     USA  2011-4-3      K
3     MEX  2011-5-7      K

In [145]: FamilyVsWWTotal
Out[145]:
  Country      date
0     USA  2011-4-3
1     CAN  2011-3-5
2     USA  2011-4-3
3     MEX  2011-5-7

}

除非您需要@XmlRootElement(name = "REQUERYTRXRESPONSE") @XmlAccessorType(XmlAccessType.FIELD) public class Response { private String param1; private String param2; private String param3; public String getParam1() { return param1; } public void setParam1(String param1) { this.param1 = param1; } public String getParam2() { return param2; } public void setParam2(String param2) { this.param2 = param2; } public String getParam3() { return param3; } public void setParam3(String param3) { this.param3 = param3; } 部分，否则在执行@XmlElement时无需指定@XxmlAccessorType。

我更改的是，我将required=true类中的名称空间移动到@XmlRootElement类中，如下所示：

package-info.java

我的主要测试方法包括：

@javax.xml.bind.annotation.XmlSchema(namespace = "http://tempuri.org/",
        elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
package com.sfatandrei.soplayground.model;

Answer 2

对我而言，它运作得很好。确保您有正确的编码并检查您的jaxb提供程序。我使用默认的sun实现测试它 - com.sun.xml.bind.v2.runtime.JAXBContextImpl。

对您的解组代码进行测试：

@Test
public void testUnmarshaller() throws JAXBException, IOException {
    final InputStream expectedXmlResource = getClass().getResourceAsStream("/REQUERYTRXRESPONSE.xml");
    StringWriter stringWriter = new StringWriter();
    IOUtils.copy(expectedXmlResource, stringWriter, "UTF-8");

    JAXBContext jaxbContext = JAXBContext.newInstance(REQUERYTRXRESPONSE .class);
    Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
    REQUERYTRXRESPONSE requerytrxresponse = (REQUERYTRXRESPONSE) unmarshaller.unmarshal(new StringReader(stringWriter.toString()));

    assertEquals(requerytrxresponse.getParam1(), "3gbahtJf1y85Oks4HrPLkqTQZV8Yg8pIhdXOrZ8pLGJP3FLwqKlIzIl/GgUpGvFaw4MC4SV+4pCudmVq+apIMIJJS4PrVyUx4T0ZO/Tsui4ZqCn62dLAG0DVhBVz2ZasF4yr7CRYnk47FWS0RywXmA==");
}