IllegalStateException while parsing the XML?

问题

While parsing the XMl, If the XML has one parent tag then it is working fine, If it has multiple parent tags then it is throwing the following exception.

java.lang.IllegalStateException: Current state END_ELEMENT is not among the statesCHARACTERS, COMMENT, CDATA, SPACE, ENTITY_REFERENCE, DTD valid for getText() 
        at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.getText(Unknown Source)
        at com.axxonet.queue.xmlParserValues.parse(xmlParserValues.java:37)
        at com.axxonet.queue.xmlParserValues.main(xmlParserValues.java:19)

If XML format has this structure then it is working fine.

<Address>
    <Name>Rahul</Name>
    <ID>2345</ID>
    <City>Pune</City>
    <Street>Gandhi Nagar</Street>
</Address>

If the any field value is null the tag is generate like <phone/> Then that time while parsing I am getting the following exception.

<Address>
    <Name>Rahul</Name>
    <ID>2345</ID>
    <City/>
    <Street>Gandhi Nagar</Street>
</Address>

I tried adding the IllegalStateException exception in catch block still it is throwing the exception.

My code is as follows,

Map<String, String> map = new HashMap<String, String>();
            XMLStreamReader xr;
                try {
                        xr = XMLInputFactory.newInstance().createXMLStreamReader(new FileInputStream("E:/Softwares/eclipse/reqOutputFile.xml"));
                         while(xr.hasNext()) {
                                int e = xr.next();
                                if (e == XMLStreamReader.START_ELEMENT) {
                                    String name = xr.getLocalName();
                                    xr.next();
                                    String value = null;

                                    try{
                                            value = xr.getText();
                                    }
                                    catch(IllegalStateException ex)
                                    {
                                            ex.printStackTrace();
                                    }
                 map.put(name, value);               
                                } 
                            }
                } catch (FileNotFoundException e1) {
                        e1.printStackTrace();
                } catch (XMLStreamException e1) {
                        e1.printStackTrace();
                } catch (FactoryConfigurationError e1) {
                        e1.printStackTrace();
                }

How do we handle the exception?

回答1:

I think your xml should be like this

<Root>
    <Address>
       <Name>Rahul</Name>
       <ID>2345</ID>
       <City>Pune</City>
       <Street>Gandhi Nagar</Street>
    </Address>
    <ContactAddress>
      <phone>223363</phone>
      <mobile>9988776655</mobile>
    </ContactAddress>
</Root>

回答2:

Change your code to do the following to leverage the getElementText() method instead of attempting to advance to a text node that may not exist instead:

int e = xr.next();
if (e == XMLStreamReader.START_ELEMENT) {
    String name = xr.getLocalName();
    // xr.next();
    String value = null;
    try{
        if(xr.hasText()) {
            value = xr.getElementText(); // was xr.getText();
        }
    }
    catch(IllegalStateException ex)
    {
        ex.printStackTrace();
    }
    map.put(name, value);               
}

来源：https://stackoverflow.com/questions/28501128/illegalstateexception-while-parsing-the-xml

标签

java

xml

xml-parsing

stax