我第一次使用 stax 来解析 XML 字符串。我找到了一些示例,但无法使我的代码正常工作。这是我的代码的最新版本:
public class AddressResponseParser
{
private static final String STATUS = "status";
private static final String ADDRESS_ID = "address_id";
private static final String CIVIC_ADDRESS = "civic_address";
String status = null;
String addressId = null;
String civicAddress = null;
public static AddressResponse parseAddressResponse(String response)
{
try
{
byte[] byteArray = response.getBytes("UTF-8");
ByteArrayInputStream inputStream = new ByteArrayInputStream(byteArray);
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
XMLStreamReader reader = inputFactory.createXMLStreamReader(inputStream);
while (reader.hasNext())
{
int event = reader.next();
if (event == XMLStreamConstants.START_ELEMENT)
{
String element = reader.getLocalName();
if (element.equals(STATUS))
{
status = reader.getElementText();
continue;
}
if (element.equals(ADDRESS_ID))
{
addressId = reader.getText();
continue;
}
if (element.equals(CIVIC_ADDRESS))
{
civicAddress = reader.getText();
continue;
}
}
}
}
catch (Exception e)
{
log.error("Couldn't parse AddressResponse", e);
}
}
}
我已经在“事件”和“reader.getElementText()”上放置了手表。当代码停止时
String element = reader.getLocalName();
显示“reader.getElementText()”值,但一旦它离开该行,就无法评估。当代码停止时:
status = reader.getElementText();
“元素”手表显示正确的值。最后,当我将代码再执行一行时,我发现了这个异常:
(com.ctc.wstx.exc.WstxParsingException) com.ctc.wstx.exc.WstxParsingException: Current state not START_ELEMENT
at [row,col {unknown-source}]: [1,29]
我尝试过使用status = reader.getText();
,但后来我得到了这个异常:
(java.lang.IllegalStateException) java.lang.IllegalStateException: Not a textual event (END_ELEMENT)
有人可以指出我做错了什么吗?
编辑:
添加用于测试的 JUnit 代码:
public class AddressResponseParserTest
{
private String status = "OK";
private String address_id = "123456";
private String civic_address = "727";
@Test
public void testAddressResponseParser() throws UnsupportedEncodingException, XMLStreamException
{
AddressResponse parsedResponse = AddressResponseParser.parseAddressResponse(this.responseXML());
assertEquals(this.status, parsedResponse.getStatus());
assertEquals(this.address_id, parsedResponse.getAddress()
.getAddressId());
assertEquals(this.civic_address, parsedResponse.getAddress()
.getCivicAddress());
}
private String responseXML()
{
StringBuffer buffer = new StringBuffer();
buffer.append("<response>");
buffer.append("<status>OK</status>");
buffer.append("<address>");
buffer.append("<address_id>123456</address_id>");
buffer.append("<civic_address>727</civic_address>");
buffer.append("</address>");
buffer.append("</response>");
return buffer.toString();
}
}