java创建类对象的哈希映射

Question

我想创建一个类对象的哈希映射

课程安排如下-

public class BitbucketRecordDataModel {
    private String softwareId;
    private String scmUrl;
    private String aggregationDate;

    public BitbucketRecordDataModel(String softwareId, String scmUrl, String aggregationDate) {
        this.softwareId = softwareId;
        this.scmUrl = scmUrl;
        this.aggregationDate = aggregationDate;
    }

    public String getSoftwareId() {
        return softwareId;
    }

    public void setSoftwareId(String softwareId) {
        this.softwareId = softwareId;
    }

    public String getScmUrl() {
        return scmUrl;
    }

    public void setScmUrl(String scmUrl) {
        this.scmUrl = scmUrl;
    }

    public String getAggregationDate() {
        return aggregationDate;
    }

    public void setAggregationDate(String aggregationDate) {
        this.aggregationDate = aggregationDate;
    }
}

我正在创建一个以键为字符串的哈希映射，并尝试将值插入哈希映射。但是当我试图检索哈希映射的细节时，我得到了null和一些非常奇怪的值，它们是我的类的名称

HashMap<String, BitbucketRecordDataModel> map = new HashMap<String, BitbucketRecordDataModel>();

cacheCondition = "hi";
username = "hi1";
protocol = "hi2";

BitbucketRecordDataModel bitbucketRecordDataModel = new BitbucketRecordDataModel(cacheCondition, username, protocol);

map.put(repoName, bitbucketRecordDataModel);

System.out.println(map.get("deployment-service-api.git"));

我对Java和哈希映射非常陌生。我做错了什么？为什么我会得到如此奇怪的价值观

Answer 1

首先，您应该重写类的方法。如果不重写它并从任何对象实例调用，它将作为对象类的实现进行响应。您可以在这里找到它的基本实现please find toString() Method

请复制下面toString（）方法的共享代码块，并将其粘贴到类中

我还注意到，在将数据放入映射时，您将repoName定义为键，但您使用的是部署服务api。检索数据时将git作为键

请确保使用相同的键值

 @Override
        public String toString() {
            return "BitbucketRecordDataModel{" +
                    "softwareId='" + softwareId + '\'' +
                    ", scmUrl='" + scmUrl + '\'' +
                    ", aggregationDate='" + aggregationDate + '\'' +
                    '}';
        }