package com.royan.weakey.platform.common.jdk18;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.serializer.SerializerFeature;import com.royan.weakey.platform.dataobject.ContactDO;import lombok.extern.slf4j.Slf4j;import java.util.ArrayList;import java.util.List;/** * json 工具的使用 * 1）json字符串转为具体的对象 * 2) 对象转为json串 * 3) 集合转为json数组 * 4) json数组转为集合 */@Slf4jpublic class JsonUtil {    private String name = "{\"name\":\"bai\",\"wo\":\"中国人\"}\n";    public static 
     
       T jsonStrToObject(String str, Class
      
        clz) {        log.info("str--{}", str);        T t = JSON.parseObject(str, clz);        return t;    }    public static 
       
         List
        
          jsonStrToList(String str, Class
         
           clz) {        log.info("str--{}", str);        List
          
            list = JSON.parseArray(str, clz); return list; } public static 
           
             String objToJsonStr(T t) { log.info("t--{}", JSON.toJSONString(t, SerializerFeature.DisableCircularReferenceDetect)); return JSON.toJSONString(t, SerializerFeature.DisableCircularReferenceDetect); } public static 
            
              String listTOJsonStr(List
             
               t) { log.info("t--{}", JSON.toJSONString(t, SerializerFeature.DisableCircularReferenceDetect)); return JSON.toJSONString(t, SerializerFeature.DisableCircularReferenceDetect); } public static void main(String[] args) { ContactDO contactDO = new ContactDO(); contactDO.setOwnerId("ownerId"); contactDO.setContactPhone("contactPhone"); contactDO.setContactId("contactId"); contactDO.setContactName("contactName"); objToJsonStr(contactDO); log.info("\n"); List
              
                list = new ArrayList<>(); list.add(contactDO); list.add(contactDO); list.add(contactDO); listTOJsonStr(list); log.info("\n"); String str = "{\"contactId\":\"contactId\",\"contactName\":\"contactName\",\"contactPhone\":\"contactPhone\",\"ownerId\":\"ownerId\"}"; ContactDO contactDO1 = jsonStrToObject(str, ContactDO.class); log.info("contactDO1,contactName:{},setOwnerId:{}", contactDO1.getContactName(), contactDO1.getOwnerId()); log.info("\n"); String arrayStr = "[{\"contactId\":\"contactId\",\"contactName\":\"contactName\"," + "\"contactPhone\":\"contactPhone\",\"ownerId\":\"ownerId\"},{\"contactId\":\"contactId\",\"contactName\":\"contactName\",\"contactPhone\":\"contactPhone\",\"ownerId\":\"ownerId\"},{\"contactId\":\"contactId\",\"contactName\":\"contactName\",\"contactPhone\":\"contactPhone\",\"ownerId\":\"ownerId\"}]\n"; List
               
                 contactDOS = jsonStrToList(arrayStr, ContactDO.class); log.info("list.get())-{}", contactDOS.get(0).toString()); }}
               
              
             
            
           
          
         
        
       
      
     

 

package com.royan.weakey.platform.dataobject;import com.royan.weakey.platform.common.dto.AbstractBaseDO;import lombok.Data;/** * 联系人关系实体类 */@Datapublic class ContactDO extends AbstractBaseDO {    /**     * 联系人姓名     */    private String contactName;    /**     * 联系人电话     */    private String contactPhone;    /**     * owner电话     */    private String contactId;    /**     * owner     */    private String ownerId;    @Override    public String toString() {        return "ContactDO{" +                "contactName='" + contactName + '\'' +                ", contactPhone='" + contactPhone + '\'' +                ", contactId='" + contactId + '\'' +                ", ownerId='" + ownerId + '\'' +                '}';    }}