java - JSON 到 Java 的转换以及使用 DAO 的映射

Question

我有以下 JSON 响应，想要转换为 Java，然后将数据保存到数据库。

我查看了各种工具，但无法找到合适的解决方案。

我做错了什么，但无法理解差距在哪里。

下面是我的 JSON:

{
    "release-1.0": [{
        "id": 55,
        "resourceId": "126",
        "allGraphs": null,
        "isChecked": true
    }, {
        "id": 56,
        "resourceId": "125",
        "allGraphs": null,
        "isChecked": true
    }, {
        "id": 58,
        "resourceId": "140",
        "allGraphs": null,
        "isChecked": true
    }]
}

这是我的 Java 类映射到上面的 JSON。

@DatabaseTable(tableName = "test_group")
public class TestGroup {
    private List<TestGroup> testGroup;

    public TestGroup() {
        // ORMLite needs a no-arg constructor
    }

    @DatabaseField
    private List<String> test_group_id;

    @DatabaseField
    private String id;

    @DatabaseField
    private String test_details;

    @DatabaseField
    private String graph_id;

    public void setTestGroupID(List<String> testGroupId) {
        this.test_group_id = testGroupId;
    }

    public void setId(String id) {
        this.id = id;
    }

    public void testDetails(String testDetails) {
        this.test_details = testDetails;
    }

    public void setGraphId(String allGraphs) {
        this.graph_id = allGraphs;
    }

    public List<TestGroup> getAllGraphs() {
        return testGroup;
    }
}

我使用了 Jackson，但出现如下错误:

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "release-1.0" (class org.example.model.TestGroup), not marked as ignorable (4 known properties: "testGroupID", "graphId", "id", "allGraphs"])
 at [Source: {"release-1.0":[{"id":55,"resourceId":"126","allGraphs":null,"isChecked":true},{"id":56,"resourceId":"125","allGraphs":null,"isChecked":true},{"id":58,"resourceId":"140","allGraphs":null,"isChecked":true}]}; line: 1, column: 17]

请帮忙。

提前致谢。

Answer 1

正如错误所示，"release-1.0"您的 JSON 中的字段是 Unrecognized - 意思是，您的 TestGroup 中没有具有该名称的字段类。

JSON字段必须与 Class 匹配数据成员:

[
    {
        "id": 55,
        "resourceId": "126",
        "allGraphs": null,
        "isChecked": true
    }, {
        "id": 56,
        "resourceId": "125",
        "allGraphs": null,
        "isChecked": true
    }, {
        "id": 58,
        "resourceId": "140",
        "allGraphs": null,
        "isChecked": true
    }]
]

将与 List<TestGroup> 匹配如果TestGroup是:

@DatabaseTable(tableName = "test_group")
public class TestGroup {

    public TestGroup() {
        // ORMLite needs a no-arg constructor
    }

    @DatabaseField
    private String id;

    @DatabaseField
    private String resourceId;

    @DatabaseField
    private String allGraphs;

    @DatabaseField
    private Bollean isChecked;

    // Getters and setters - preferably auto-generated since NAMES MUST MATCH.
}