<dependencies>
        <!--序列化-->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
        </dependency>
        <!--xml转换-->
        <dependency>
            <groupId>com.fasterxml.jackson.dataformat</groupId>
            <artifactId>jackson-dataformat-xml</artifactId>
        </dependency>
    </dependencies>

xml转json

    public static void main(String[] args) throws Exception {
        ObjectMapper mapper = new ObjectMapper();
        XmlMapper xmlMapper = new XmlMapper();
        // xml转Map转Json
        String xml = "<apps><app><id>1</id><name>Google Maps</name><virsion>1.0</virsion></app></apps>";
        xml = "<appsii>" + xml + "</appsii>";
        Map map = xmlMapper.readValue(xml, Map.class);
        String json = mapper.writeValueAsString(map);
        System.out.println(json);
    }

json转xml

    public static void main(String[] args) throws Exception {
        ObjectMapper mapper = new ObjectMapper();
        XmlMapper xmlMapper = new XmlMapper();
        // Json转xml
        String json = "{\"apps\":{\"app\":{\"id\":\"1\",\"name\":\"Google Maps\",\"virsion\":\"1.0\"}}}";
        Map map = mapper.readValue(json, Map.class);
        String xml = xmlMapper.writeValueAsString(map);
        System.out.println(xml);
    }