在执行http POST期间,我将响应存储为String响应.
HttpResponse httpresponse = httpclient.execute(httppost); httpentity resEntity = httpresponse.getEntity(); response = EntityUtils.toString(resEntity);
如果我打印响应,它看起来像：
<?xml version="1.0" encoding="UTF-8"?> <response status="ok"> <sessionID>lo8mdn7bientr71b5kn1kote90</sessionID> </response>
我想将sessionID存储为字符串.我试过了
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); InputSource is = new InputSource(new StringReader(xml));
和这样的各种方法,但它不会让我运行代码,因为DocumentBuildFactory和InputSource是无效的.
我应该怎么做才能从这个XML中提取特定的字符串？
解决方法
这只是快速而肮脏的测试.它对我有用.
import java.io.IOException;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
public class Test {
public static void main(String[] args) {
String xml= "<?xml version=\"1.0\" encoding=\"UTF-8\"?><response status=\"ok\"><sessionID>lo8mdn7bientr71b5kn1kote90</sessionID></response>";
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder;
InputSource is;
try {
builder = factory.newDocumentBuilder();
is = new InputSource(new StringReader(xml));
Document doc = builder.parse(is);
NodeList list = doc.getElementsByTagName("sessionID");
System.out.println(list.item(0).getTextContent());
} catch (ParserConfigurationException e) {
} catch (SAXException e) {
} catch (IOException e) {
}
}
}
输出：lo8mdn7bientr71b5kn1kote90