我正在通过其REST API访问ALM。我承认我不是xml最强的人,但这是我的尝试。返回给我的回复看起来像:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Entities TotalResults="1">
<Entity Type="test-instance">
<ChildrenCount>
<Value>0</Value>
</ChildrenCount>
<Fields>
<Field Name="test-id">
<Value>13392</Value>
</Field>
<Field Name="os-config">
<Value/>
</Field>
<Field Name="data-obj">
<Value/>
</Field>
<Field Name="is-dynamic">
<Value>N</Value>
</Field>
<Field Name="exec-time">
<Value>09:41:40</Value>
</Field>
<Field Name="cycle">
<Value/>
</Field>
<Field Name="has-linkage">
<Value>N</Value>
</Field>
<Field Name="exec-event-handle">
<Value/>
</Field>
<Field Name="exec-date">
<Value>2019-06-12</Value>
</Field>
<Field Name="last-modified">
<Value>2019-06-12 06:42:47</Value>
</Field>
<Field Name="subtype-id">
<Value>hp.qc.test-instance.VAPI-XP-TEST</Value>
</Field>
<Field Name="cycle-id">
<Value>5421</Value>
</Field>
<Field Name="attachment">
<Value/>
</Field>
<Field Name="id">
<Value>13404</Value>
</Field>
<Field Name="plan-scheduling-date"/>
<Field Name="assign-rcyc">
<Value/>
</Field>
<Field Name="test-config-id">
<Value>14751</Value>
</Field>
<Field Name="owner">
<Value>johnsmith</Value>
</Field>
<Field Name="pinned-baseline">
<Value/>
</Field>
<Field Name="ver-stamp">
<Value>4</Value>
</Field>
<Field Name="test-instance">
<Value>1</Value>
</Field>
<Field Name="host-name">
<Value/>
</Field>
<Field Name="order-id">
<Value>1</Value>
</Field>
<Field Name="eparams">
<Value/>
</Field>
<Field Name="task-status">
<Value/>
</Field>
<Field Name="iterations">
<Value/>
</Field>
<Field Name="environment">
<Value/>
</Field>
<Field Name="actual-tester">
<Value>johnsmith</Value>
</Field>
<Field Name="name">
<Value>My Test Case</Value>
</Field>
<Field Name="bpta-change-awareness">
<Value/>
</Field>
<Field Name="user-template-02"/>
<Field Name="plan-scheduling-time">
<Value/>
</Field>
<Field Name="user-02">
<Value/>
</Field>
<Field Name="status">
<Value>Passed</Value>
</Field>
</Fields>
<RelatedEntities/>
</Entity>
<singleElementCollection>false</singleElementCollection>
</Entities>
我正在尝试从文件顶部附近的第一个字段“ test-id”中获取值。
我尝试使用DocumentBuilder拉取值:
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
InputSource src = new InputSource();
src.setCharacterStream(new StringReader(response.toString())); <--response.toString() is the xml data you see above.
Document doc = builder.parse(src);
test_id = doc.getElementsByTagName("test-id").item(0).getTextContent();
不幸的是,最后一行等于零。有人可以在这里给我一点推动力吗?我不确定还有什么尝试。
答案 0 :(得分:1)
这是使用XPath的外观:
InputSource src = new InputSource();
src.setCharacterStream(new StringReader(response.toString()));
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = builder.parse(src);
XPathFactory xPathfactory = XPathFactory.newInstance();
XPath xpath = xPathfactory.newXPath();
XPathExpression expr = xpath.compile("//Field[@Name='test-id']/Value");
System.out.println(expr.evaluate(doc, XPathConstants.STRING));
对XPath表达式语法的完整解释超出了此答案的范围,但是:
//Field
-查找所有Field
元素,无论它们在文档中的位置... [@Name='test-id']
...具有Name
属性,值为test-id
... /Value
...其中的Value
元素是与Field
相匹配的那些子节点的子节点或者,您也可以非常明确地知道要查找的节点的路径(而不是使用//
):
XPathExpression expr = xpath.compile("/Entities/Entity/Fields/Field[@Name='test-id']/Value");