Java获取类或对象中的字段名称和JsonProperty注释的名称

Posted 2022-04-01 wisdom-projects

创建一个模型如下：

package model;

import com.fasterxml.jackson.annotation.JsonProperty;

public class ProvNode

    @JsonProperty("machineId")
    private String nodeId;

    private String name;

    private String result;

    private String status;

    @JsonProperty("message")
    private String msg;

    @JsonProperty("privateIpAddress")
    private String privateIpAddr;

    @JsonProperty("publicIpAddress")
    private String publicIpAddr;

    @JsonProperty("launchtime")
    private Long launchTime;

    public String getNodeId()
    
        return nodeId;
    

    public void setNodeId(String nodeId)
    
        this.nodeId = nodeId;
    

    public String getName()
    
        return name;
    

    public void setName(String name)
    
        this.name = name;
    

    public String getResult()
    
        return result;
    

    public void setResult(String result)
    
        this.result = result;
    

    public String getStatus()
    
        return status;
    

    public void setStatus(String status)
    
        this.status = status;
    

    public String getMsg()
    
        return msg;
    

    public void setMsg(String msg)
    
        this.msg = msg;
    

    public String getPrivateIpAddr()
    
        return privateIpAddr;
    

    public void setPrivateIpAddr(String privateIpAddr)
    
        this.privateIpAddr = privateIpAddr;
    

    public String getPublicIpAddr()
    
        return publicIpAddr;
    

    public void setPublicIpAddr(String publicIpAddr)
    
        this.publicIpAddr = publicIpAddr;
    

    public Long getLaunchTime()
    
        return launchTime;
    

    public void setLaunchTime(Long launchTime)
    
        this.launchTime = launchTime;
    

创建一个Test类：

import java.lang.reflect.Field;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.ibm.spectrum.prov.model.ProvNode;

public class Test


    public static void main(String[] args)
    
        for (Field field : ProvNode.class.getDeclaredFields())
        
            JsonProperty annotation = field.getAnnotation(JsonProperty.class);
            if (null == annotation)
            
                System.out.println(field.getName());
                continue;
            
            System.out.println(annotation.value());
        
    

结果如下：

machineId
name
result
status
message
privateIpAddress
publicIpAddress
launchtime