1. Your P tag is not closed, so I'll close it for you.
2. I will use dom4j to parse, add dependencies for the project or download jar packages online by myself:
& lt dependency & gt
& ltgroupId & gtdom4j & lt/groupId & gt；
& ltartifactId & gtdom4j & lt/artifact id & gt；
& lt version & gt1.6.1< /version & gt；
& lt/dependency & gt；
3. The target value you want to get is in the attribute of the last S tag. When dom4j is used for parsing, dom4j needs that ""symbol, otherwise it will report an error: org.dom4j.documentexception: Error in line 5 of the document? : The attribute value of' ca_out' associated with element type' s' cannot contain'.
& lt？ Xml version =" 1.0 "encoding ="UTF-8"? & gt
& ltp & gt
& lts err flag = " 0 "/& gt；
& lts errtext = " "/& gt；
& lts ca _ out = " & amplt； State and society. gt； 0 & amplt； /STATE & amp； gt； & amplt； Error code > 0 & amplt； /error code > ”/& gt；
& lt/p & gt；
4. After parsing the attribute of ca_out, the attribute value is
& ltroot & gt
& ltSTATE & gt0 & lt/STATE & gt；
& lt error code & gt0</errorcode >
& lt/root & gt；
So we can parse it.
5. The code is as follows:
Common class test {
The public static void main(String[] args) throws an exception {
String xml = " & lt？ Xml version =\" 1.0\ "encoding =\"UTF-8\"? & gt\n" +
“& ltp & gt\n" +
“& lts err flag = \ " 0 \ "/& gt； \n" +
“& lts errtext=\"\"/>\n" +
“& lts ca _ out = \ " & amplt； State and society. gt； 0 & amplt； /STATE & amp； gt； & amplt； Error code > 0 & amplt； /error code > \ "/>； \n" +
“& lt/p >； ;
SAXReader reader = new SAXReader()；
document doc = reader . read(new bytearray inputstream(XML . getbytes(" UTF-8 ")))； //Read the xml string
element root = doc . getrootelement()；
List & lt element & gt elements = root.elements ();
For (element element: element) {
attribute attribute = element . attribute(" ca _ out ")； //get the ca_out node attribute.
If (property! = null) {
string ca _ out value = attribute . getvalue()；
System.out.println("ca_out in ca _ out: "+ca _ outvalue+"\ n ");
//The obtained ca_out is not xml and has no root node. Add a root node to it first and convert it into standard xml before processing.
String caOutXml = "< root >;" +ca _ out value+" & lt； /root >；
document caout doc = reader . read(new bytearrayiputstream(caout XML . getbytes(" UTF-8 ")))；
element caOutRoot = caoutdoc . getrootelement()；
List & lt element & gtcaoutelements = caoutroot.elements ();
for(Element caout Element:caout elements){
system . out . println(caout element . getname()+" = "+caout element . gettext())；
}
}
}
}
}
6. Operation result: