An introduction to JAXB

2016-11-12 15:53:40 +07:00
parent 108adf84f6
commit 19eb8bd90d
7 changed files with 349 additions and 0 deletions
@@ -0,0 +1,58 @@
+package com.baeldung.jaxb;
+
+import java.util.Date;
+
+import javax.xml.bind.annotation.XmlAttribute;
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.XmlTransient;
+import javax.xml.bind.annotation.XmlType;
+
+@XmlRootElement(name = "book")
+@XmlType(propOrder = { "id", "name", "date" })
+public class Book {
+    private Long id;
+    private String name;
+    private String author;
+    private Date date;
+
+    @XmlAttribute
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    @XmlElement(name = "title")
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @XmlTransient
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Date getDate() {
+        return date;
+    }
+
+    public void setDate(Date date) {
+        this.date = date;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    @Override
+    public String toString() {
+        return "Book [id=" + id + ", name=" + name + ", author=" + author + ", date=" + date + "]";
+    }
+}
@@ -0,0 +1,28 @@
+package com.baeldung.jaxb;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import javax.xml.bind.annotation.adapters.XmlAdapter;
+
+public class DateAdapter extends XmlAdapter<String, Date> {
+
+    private static final ThreadLocal<DateFormat> dateFormat = new ThreadLocal<DateFormat>() {
+
+        @Override
+        protected DateFormat initialValue() {
+            return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        }
+    };
+
+    @Override
+    public Date unmarshal(String v) throws Exception {
+        return dateFormat.get().parse(v);
+    }
+
+    @Override
+    public String marshal(Date v) throws Exception {
+        return dateFormat.get().format(v);
+    }
+}
@@ -0,0 +1,39 @@
+package com.baeldung.jaxb;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.Date;
+
+import javax.xml.bind.JAXBContext;
+import javax.xml.bind.JAXBException;
+import javax.xml.bind.Marshaller;
+import javax.xml.bind.Unmarshaller;
+
+public class Main {
+    public static void marshal() throws JAXBException, IOException {
+        Book book = new Book();
+        book.setId(1L);
+        book.setName("Book1");
+        book.setAuthor("Author1");
+        book.setDate(new Date());
+
+        JAXBContext context = JAXBContext.newInstance(Book.class);
+        Marshaller marshaller = context.createMarshaller();
+        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
+        marshaller.marshal(book, new File("./book.xml"));
+    }
+
+    public static Book unMashal() throws JAXBException, IOException {
+        JAXBContext context = JAXBContext.newInstance(Book.class);
+        Unmarshaller unmarshaller = context.createUnmarshaller();
+        Book book = (Book) unmarshaller.unmarshal(new FileReader("./book.xml"));
+        return book;
+    }
+
+    public static void main(String[] args) throws JAXBException, IOException {
+        marshal();
+        Book book = unMashal();
+        System.out.println(book.toString());
+    }
+}