I have a problem with m class service on spring mvc when I call m class method it return a java.lang.NullPointerException
// Partie d'importation des Data
parseData = null;
Hashtable<String, String> Data = new Hashtable<>();
Data.put("idName", parseData.ParseidName(saveDirectory + fileName+".txt"));
Data.put("country", "test");
Data.put("date", "test");
Data.put("mncmcc", "test");
Data.put("pmn", "test");
Data.put("dns", "test");
Data.put("mails", "test");
Data.put("phones", "test");
//return back to home.jsp
ModelAndView model = new ModelAndView("uploadfile");
model.addObject("Datas", Data);
map.addAttribute("Datas", Data);
fileNames.add(fileName);
My ParsingData service is
public interface ParseDataService {
public String ParseidName(String filename);
public String ParseDate(File f);
public String ParseMNCMCC(File f);
public String ParseIP(File f);
public String ParseDNS(File f);
public String ParseContacts(File f);
}
And the implementation is
@Service("ParseService")
@Transactional
public class ParseServiceImpl implements ParseService {
private static String content;
private static File raexfile;
@Override
public
String toTxt(String filename) throws IOException {
raexfile = new File (filename);
PDDocument document = PDDocument.load(raexfile);
PDFTextStripper s = new PDFTextStripper();
content = s.getText(document);
return content;
}
public ParseServiceImpl() {
super();
// TODO Auto-generated constructor stub
}
}
The exception error is a java.lang.NullPointerException I don't know how to initialize my service class :
java.lang.NullPointerException
com.roaming.controller.irFileUploadController.crunchifySave(irFileUploadCont roller.java:78)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62 )
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl .java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(Invocab leHandlerMethod.java:219)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForReque st(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandle rMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerA dapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerA dapter.handleInternal(RequestMappingHandlerAdapter.java:686)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.hand
