WildcardQuery error in lucene query (Memo)

I tested the multi-field structure query. The Code is as follows:

Try {long start = system. currenttimemillis (); directory DIC = new simplefsdirectory (new file (ilucenemanager. default_region_lucene_index_path); indexsearcher searcher = new indexsearcher (DIC); // ---------- set similarity // searcher. setsimilarity (New iksimilarity (); // ----------- the standardanalyzer analyzer tested for multi-field query is faster than ikanalyzer. analyzer = new standardanalyzer (version. lucene_current); // analyzer = new Ikanalyzer (true); string [] fields = new string [] {"name", "username", "weight", "standardname", "Address "}; multifieldqueryparser multiqparser = new multifieldqueryparser (version. lucene_current, fields, analyzer); // ---------- keyword string keyword = "? Fu "; query = multiqparser. parse (keyword); // ------------ query // searcher. search (query, receivemanagerimpl. default_query_num); topdocs tops = searcher. search (query, 10); scoredoc [] scores = tops. scoredocs; int length = tops. totalhits; For (INT I = 0; I <(length> extends emanagerimpl. default_query_num? Receivemanagerimpl. default_query_num: length); I ++) {document targetdoc=searcher.doc(scores[ I #.doc); // system. out. println (targetdoc. getfields ("name") [0]. stringvalue (); // system. out. println (targetdoc. getfields ("Address") [0]. stringvalue (); // system. out. println (targetdoc. get ("name"); system. out. println (targetdoc. get ("Address"); system. out. println (targetdoc. get ("username"); system. out. println (targetdoc. get ("name") ;}; long end = system. currenttimemillis (); system. out. println ("total search time:" + (end-Start) + "millisecond ");

My search keyword is: "? Government ". The error message is as follows:

Org. Apache. Lucene. queryparser. parseexception: cannot parse '? Fu ':' * 'or '? 'Not allowed as first character in wildcardqueryat Org. apache. lucene. queryparser. queryparser. parse (queryparser. java: 187) at com. geostar. test. poi. dao. receivemanagertest. testmultiplefieldquery (receivemanagertest. java: 79) at Sun. reflect. nativemethodaccessorimpl. invoke0 (native method) at Sun. reflect. nativemethodaccessorimpl. invoke (nativemethodaccessorimpl. java: 39) at Sun. reflect. delegatingmethodaccessorimpl. Invoke (delegatingmethodaccessorimpl. java: 25) at java. lang. reflect. method. invoke (method. java: 597) at Org. springframework. test. context. junit4.springtestmethod. invoke (springtestmethod. java: 160) at Org. springframework. test. context. junit4.springmethodroadie. runtestmethod (springmethodroadie. java: 233) at Org. springframework. test. context. junit4.springmethodroadie $ runbeforesthentestthenafters. run (springmethod Roadie. java: 333) at Org. springframework. test. context. junit4.springmethodroadie. runwithrepetitions (springmethodroadie. java: 217) at Org. springframework. test. context. junit4.springmethodroadie. runtest (springmethodroadie. java: 197) at Org. springframework. test. context. junit4.springmethodroadie. run (springmethodroadie. java: 143) at Org. springframework. test. context. junit4.springjunit4classrunner. invoketestmethod (Springjunit4classrunner. java: 160) at Org. JUnit. internal. runners. junit4classrunner. runmethods (junit4classrunner. java: 51) at Org. JUnit. internal. runners. junit4classrunner $ 1.run( junit4classrunner. java: 44) at Org. JUnit. internal. runners. classroadie. rununprotected (classroadie. java: 27) at Org. JUnit. internal. runners. classroadie. runprotected (classroadie. java: 37) at Org. JUnit. internal. runners. junit4classrunner. R UN (junit4classrunner. java: 42) at Org. springframework. test. context. junit4.springjunit4classrunner. run (springjunit4classrunner. java: 97) at Org. eclipse. jdt. internal. junit4.runner. junit4testreference. run (junit4testreference. java: 49) at Org. eclipse. jdt. internal. JUnit. runner. testexecution. run (testexecution. java: 38) at Org. eclipse. jdt. internal. JUnit. runner. remotetestrunner. runtests (remotetestrunner. java: 467) At Org. eclipse. jdt. internal. JUnit. runner. remotetestrunner. runtests (remotetestrunner. java: 683) at Org. eclipse. jdt. internal. JUnit. runner. remotetestrunner. run (remotetestrunner. java: 390) at Org. eclipse. jdt. internal. JUnit. runner. remotetestrunner. main (remotetestrunner. java: 197) caused by: Org. apache. lucene. queryparser. parseexception: '*' or '? 'Not allowed as first character in wildcardqueryat Org. apache. lucene. queryparser. queryparser. getwildcardquery (queryparser. java: 923) at Org. apache. lucene. queryparser. multifieldqueryparser. getwildcardquery (multifieldqueryparser. java: 175) at Org. apache. lucene. queryparser. multifieldqueryparser. getwildcardquery (multifieldqueryparser. java: 170) at Org. apache. lucene. queryparser. queryparser. term (queryparser. java: 1347) at Org. apache. lucene. queryparser. queryparser. clause (queryparser. java: 1250) at Org. apache. lucene. queryparser. queryparser. query (queryparser. java: 1178) at Org. apache. lucene. queryparser. queryparser. toplevelquery (queryparser. java: 1167) at Org. apache. lucene. queryparser. queryparser. parse (queryparser. java: 182 )... 24 more

The error message reminds me that when you use the WildCardQuery object to query, there cannot be "?" before the query keyword. And "*".