Question

我有两个类， Package 和 ModelRefObj 。包中包含两组 ModelRefObj 。我使用Simple框架从XML解析他们的实例，所以我创建了一些JUnit测试。我能够解析 ModelRefObj XML，但在尝试解析包时我收到以下异常：

org.simpleframework.xml.core.ValueRequiredException: Empty value for @org.simpleframework.xml.Text(empty=, data=false, required=true) on field 'value' private java.lang.String cz.semanta.coc.domain.cognos.ModelRefObj.value in class cz.semanta.coc.domain.cognos.ModelRefObj at line 1
    at org.simpleframework.xml.core.Composite.readInstance(Composite.java:580)
    at org.simpleframework.xml.core.Composite.readText(Composite.java:467)
    at org.simpleframework.xml.core.Composite.access$200(Composite.java:59)
    at org.simpleframework.xml.core.Composite$Builder.read(Composite.java:1381)
    ...

以下是我试图解析的XML：

<package> 
    <name>GO Sales (nalysis)</name>
    <visible>
        <refObj>[go_sales]</refObj>
        <refObj>[Filters and calculations].[Returns]</refObj>
    </visible>
    <hidden>
        <refObj>[gosales].[BRANCH].[BRANCH_CODE]</refObj>
        <refObj>[gosales].[BRANCH].[ADDRESS1]</refObj>
        <refObj>[gosales].[BRANCH].[CITY]</refObj>
    </hidden>
</package>

以下是我的注释类：

@Root(name = "package")
public class Package {

    @Element
    private String name;

    @ElementList(name = "visible", entry = "refObj", type = ModelRefObj.class)
    private Set<ModelRefObj> visibleRefObjs;

    @ElementList(name = "hidden", entry = "refObj", type = ModelRefObj.class)
    private Set<ModelRefObj> hiddenRefObjs;

    Package() { }

    ...
}

@Root(name = "refObj")
public class ModelRefObj {

    @Text
    private String value;

    ModelRefObj() { }

    public ModelRefObj(String value) {
        this.value = value;
    }

    ...
}

Answer 1

我已经实现了您拥有的类，并使用了您提供的示例xml。

我创建了一个主要功能来测试

public static void main(String args[]) throws Exception {
    Serializer serializer = new Persister(new Format("<?xml version=\"1.0\" encoding= \"UTF-8\" ?>"));
    File source = new File("sample.xml");
    Package p = serializer.read(Package.class, source);

    System.out.println(p.name);
}

输出

GO Sales (nalysis)

在调试模式下检查对象p显示它具有两个具有两个和三个元素的集合。你的代码对我来说很好。

使用Simple中的@Text注释反序列化元素列表

1 个答案: