Type mismatch: cannot convert from Document to Document

Java代码如下
File inFile = new File("f:\\RETURN2.xml");
InputStream inStream = new FileInputStream(inFile);
byte[] inOutb = new byte[inStream.available()];
inStream.read(inOutb); //读入流,保存在byte数组
inStream.close();
ByteArrayInputStream bais = new ByteArrayInputStream(inOutb);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(bais);
然后就报错了
Type mismatch: cannot convert from Document to Document

你引用 的 Document 不对， import 中的。要和 DocumentBuilder 对应的

问题意思是说 一个元素不能从object类型转换成document类型。 我试了你的代码，for循环里list转ch出的错，你只要给list加一个泛型就可以了。 stringbuffer buffer = new stringbuffer(); //看这里↓ list list = this.channelmanager.getchannellistbyfather(integer.valueof(block.getcontent())); if (list != null) { buffer.append("

"); for (channel ch : list) { buffer.append("
• ").tostring()).append(ch.getname()).append("
"); }