Java：jackson将xml和json转为JavaBean对象

依赖

<!-- xml => Object -->
<dependency> <groupId>com.fasterxml.jackson.dataformat</groupId> <artifactId>jackson-dataformat-xml</artifactId> <version>2.10.1</version>
</dependency>
<dependency> <groupId>org.codehaus.woodstox</groupId> <artifactId>woodstox-core-asl</artifactId> <version>4.4.1</version>
</dependency>

<!-- json => Object -->
<dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.10.0</version>
</dependency>

  

 

  
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book.xml

<?xml version="1.0" encoding="UTF-8" ?>
<book> <id>1</id> <name>三国演义</name> <author>罗贯中</author>
</book>

  

 

  
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book.json

{
  "id": 1,
  "name": "三国演义",
  "author": "罗贯中"
}

  

 

  
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Book.java

package com.example.demo.pojo;

public class Book { private Integer id; private String name; private String author; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAuthor() { return author; } public void setAuthor(String author) { this.author = author; } @Override public String toString() { return "Book{" + "id=" + id + ", name='" + name + '\'' + ", author='" + author + '\'' + '}'; }
}


  

 

  
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测试类

package com.example.demo;

import com.example.demo.pojo.Book;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.xml.JacksonXmlModule;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import org.junit.jupiter.api.Test;

import java.io.IOException;
import java.io.InputStream;

public class JacksonTest { @Test public void testParseXml() throws IOException { InputStream input = JacksonTest.class.getResourceAsStream("/book.xml"); JacksonXmlModule module = new JacksonXmlModule(); XmlMapper mapper = new XmlMapper(module); Book book = mapper.readValue(input, Book.class); System.out.println(book); // Book{id=1, name='三国演义', author='罗贯中'} // 转xml String xml = mapper.writeValueAsString(book); System.out.println(xml); // <Book><id>1</id><name>三国演义</name><author>罗贯中</author></Book> } @Test public void testParseJson() throws IOException { InputStream input = JacksonTest.class.getResourceAsStream("/book.json"); ObjectMapper mapper = new ObjectMapper(); // 反序列化时忽略不存在的JavaBean属性 mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); Book book = mapper.readValue(input, Book.class); System.out.println(book); // Book{id=1, name='三国演义', author='罗贯中'} //JavaBean变为JSON String json = mapper.writeValueAsString(book); System.out.println(json); // {"id":1,"name":"三国演义","author":"罗贯中"} }
}


  

 

  
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参考
https://www.liaoxuefeng.com/wiki/1252599548343744/1320418596093986

文章来源: pengshiyu.blog.csdn.net，作者：彭世瑜，版权归原作者所有，如需转载，请联系作者。

原文链接：pengshiyu.blog.csdn.net/article/details/107605027