json字符串与java对象的相互转换(jackson)

package com.chichung.json;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JavaToJson {
    public static void main(String[] args) throws JsonProcessingException {
        PersonBean p = new PersonBean();
        p.setName("chichung");
        p.setGender("男");
        p.setAge(23);

        ObjectMapper om = new ObjectMapper();
        String s = om.writeValueAsString(p);
        System.out.println(s);
    }

}

package com.chichung.json;

import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;

public class JavaToJson {
    public static void main(String[] args) throws IOException {
        String jsonStr = "{\"name\":\"chichung\",\"age\":23,\"gender\":\"男\"}";
        ObjectMapper om = new ObjectMapper();
        PersonBean personBean = om.readValue(jsonStr, PersonBean.class);
        System.out.println(personBean);
    }

}