Jackson对象序列化

将Java对象序列化到一个JSON文件，然后再读取JSON文件获取转换为对象。在这个例子中，创建了Student类。

import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;

import java.io.File;
import java.io.IOException;

/**
 */
public class JacksonTester2 {
    public static void main(String[] args) {
        JacksonTester2 jackson = new JacksonTester2();
        try {
            Student student = new Student();
            student.setName("张三");
            student.setAge(18);
            jackson.writeJSON(student);

            Student stu = jackson.readJSON();
            System.out.println(stu);
        } catch (JsonParseException e) {
            e.printStackTrace();
        } catch (JsonMappingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    //将对象序列化到文件
    private void writeJSON(Student student) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        mapper.writeValue(new File("student.json"), student);
    }

    //读取文件转换为对象
    private Student readJSON() throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        Student student = mapper.readValue(new File("student.json"), Student.class);
        return student;
    }


}