我有以下XML,我需要将其转换为java对象。
<tests>
<test-data>
<title>BookTitle</title>
<book>BookName</book>
<count>64018</count>
<test-data>
<title>Book title1</title>
<book>Book Name1</book>
<count>5</count>
</test-data>
<test-data>
<title>Book title2</title>
<book>Book Name3</book>
<count>5</count>
</test-data>
<test-data>
<title>Book title3</title>
<book>Book Name3</book>
<count>4</count>
</test-data>
</test-data>
</tests>
当我使用JAXB转换它时,我不确定我的pojo是什么。
根据我的理解,我创建了以下POJO:
public class Tests {
TestData testData;
public TestData getTestData() {
return testData;
}
public void setTestData(TestData testData) {
this.testData = testData;
}
}
public class TestData {
String title;
String book;
String count;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getBook() {
return book;
}
public void setBook(String book) {
this.book = book;
}
public String getCount() {
return count;
}
public void setCount(String count) {
this.count = count;
}
}
请帮帮我。 提前谢谢。
答案 0 :(得分:128)
<强>测试强>
在Tests
课程中,我们会添加@XmlRootElement
注释。执行此操作将使您的JAXB实现知道当文档以此元素开头时,它应该实例化此类。 JAXB是异常配置,这意味着您只需添加注释与默认值不同的注释。由于testData
属性与默认映射不同,因此我们将使用@XmlElement
注释。您可能会发现以下教程很有用:http://wiki.eclipse.org/EclipseLink/Examples/MOXy/GettingStarted
package forum11221136;
import javax.xml.bind.annotation.*;
@XmlRootElement
public class Tests {
TestData testData;
@XmlElement(name="test-data")
public TestData getTestData() {
return testData;
}
public void setTestData(TestData testData) {
this.testData = testData;
}
}
<强> TESTDATA 强>
在这个类中,我使用@XmlType
注释来指定元素的排序顺序。我添加了一个似乎缺失的testData
属性。我也使用@XmlElement
注释,其原因与Tests
类相同。
package forum11221136;
import java.util.List;
import javax.xml.bind.annotation.*;
@XmlType(propOrder={"title", "book", "count", "testData"})
public class TestData {
String title;
String book;
String count;
List<TestData> testData;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getBook() {
return book;
}
public void setBook(String book) {
this.book = book;
}
public String getCount() {
return count;
}
public void setCount(String count) {
this.count = count;
}
@XmlElement(name="test-data")
public List<TestData> getTestData() {
return testData;
}
public void setTestData(List<TestData> testData) {
this.testData = testData;
}
}
<强>演示强>
下面是一个示例,说明如何使用JAXB API读取(解组)XML并填充域模型,然后将结果写入(编组)回XML。
package forum11221136;
import java.io.File;
import javax.xml.bind.*;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance(Tests.class);
Unmarshaller unmarshaller = jc.createUnmarshaller();
File xml = new File("src/forum11221136/input.xml");
Tests tests = (Tests) unmarshaller.unmarshal(xml);
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(tests, System.out);
}
}