InputStream 转 Node
时间: 2024-03-24 22:13:45 浏览: 58
在Java中,可以使用javax.xml.parsers包中的DocumentBuilder类将InputStream转换为Node对象。具体步骤如下:
1. 创建DocumentBuilderFactory对象:
```java
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
```
2. 创建DocumentBuilder对象:
```java
DocumentBuilder builder = factory.newDocumentBuilder();
```
3. 将InputStream转换为Document对象:
```java
Document doc = builder.parse(inputStream);
```
4. 获取Document对象的根节点:
```java
Node rootNode = doc.getDocumentElement();
```
完整代码示例:
```java
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import java.io.InputStream;
public class InputStreamToNode {
public static Node convert(InputStream inputStream) throws Exception {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(inputStream);
return doc.getDocumentElement();
}
}
```
使用示例:
```java
InputStream inputStream = new FileInputStream("test.xml");
Node rootNode = InputStreamToNode.convert(inputStream);
```
注意事项:
1. 在使用DocumentBuilder解析XML时,需要处理异常。
2. 如果InputStream中的XML格式不正确,将会抛出异常。
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