Json与bean互转的例子

来源：互联网发布：社交网络肖恩帕克最后编辑：程序博客网时间：2024/06/05 08:58
第一种：
public class JsonToJavaBean {
    public static void main(String[] args) {
        String str="{\"student\":[{\"name\":\"leilei\",\"age\":23},{\"name\":\"leilei02\",\"age\":23}]}";
        Student stu = null;
        List<Student> list = null;
        try {
            ObjectMapper objectMapper=new ObjectMapper();
            StudentList studentList=objectMapper.readValue(str, StudentList.class);
             
            list=studentList.getStudent();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        for(Student s:list){
            System.out.println(s.getName()+"   "+s.getAge());
        }
    }
}
第二种：
public static void main(String[] args) {
        ArrayList<Student> list=new ArrayList<Student>();
        Student s1=new Student();
        s1.setName("leilei");
        s1.setAge(23);
        Student s2=new Student();
        s2.setName("leilei02");
        s2.setAge(23);
        list.add(s1);
        list.add(s2);
         
        StringWriter str=new StringWriter();
         
        ObjectMapper objectMapper=new ObjectMapper();
        try {
            objectMapper.writeValue(str, list);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }   
        System.out.println(str);
    }
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