JSON-to-bean transfer, timestamp type problems

When JSON and Java beans are converted to each other, the timestamp field in the bean cannot be processed directly, and two converters need to be implemented.

The Datejsonvalueprocessor function is to convert the Timepstamp to the specified time format when the Bean is converted to JSON.

1 ImportJava.text.DateFormat;2 ImportJava.text.SimpleDateFormat;3 Importjava.util.Date;4 ImportNet.sf.json.JsonConfig;5 ImportNet.sf.json.processors.JsonValueProcessor;6 /*** Convert a timestamp in a bean to a date string in JSON*/7  Public classDatejsonvalueprocessorImplementsJsonvalueprocessor {8      Public Static FinalString Default_date_pattern = "Yyyy-mm-dd";9     PrivateDateFormat DateFormat;Ten      Publicdatejsonvalueprocessor (String datepattern) { One         Try{ ADateFormat =NewSimpleDateFormat (Datepattern);} -         Catch(Exception e) { -DateFormat =NewSimpleDateFormat (default_date_pattern); the         } -     } -      PublicObject Processarrayvalue (object value, Jsonconfig jsonconfig) { -         returnprocess (value); +     } -      PublicObject Processobjectvalue (String key, Object Value,jsonconfig jsonconfig) { +         returnprocess (value); A     } at     PrivateObject Process (object value) { -         returnDateformat.format ((Date) value); -     } -}

Timestampmorpher, in contrast to Datejsonvalueprocessor, converts the specified time format to timestamp when JSONL is converted to a bean.

1 ImportJava.sql.Timestamp;2 Importjava.text.ParseException;3 ImportJava.text.SimpleDateFormat;4 Importnet.sf.ezmorph.MorphException;5 ImportNet.sf.ezmorph.object.AbstractObjectMorpher;6 /*** Converts a date string in a JSON string into a timestamp in a bean*/7  Public classTimestampmorpherextendsAbstractobjectmorpher {8 /*** Date string format*/9 Privatestring[] formats;Ten  PublicTimestampmorpher (string[] formats) { One      This. formats =formats; A } -  Publicobject Morph (object value) { - if(Value = =NULL){ the     return NULL; - } - if(Timestamp.class. IsAssignableFrom (Value.getclass ())) { -     return(Timestamp) value; + } - if( !supports (Value.getclass ())) { +     Throw NewMorphexception (Value.getclass () + "is unsupported type"); A } atString strvalue=(String) value; -SimpleDateFormat dateparser=NULL; -  for(inti = 0; i < formats.length; i++ ){ -     if(NULL==Dateparser) { -Dateparser=NewSimpleDateFormat (Formats[i]); -}Else{ in Dateparser.applypattern (Formats[i]); -     } to     Try{ +         return NewTimestamp (Dateparser.parse (Strvalue.tolowercase ()). GetTime ()); -     Catch(ParseException e) { the         //e.printstacktrace (); *     } $ }Panax Notoginseng return NULL; - } the @Override +  PublicClass Morphsto () { A     returnTimestamp.class; the } +  Public Booleansupports (Class clazz) { -     returnString.class. IsAssignableFrom (clazz); $ } $  -}

Test it for a moment.

1  Public classJsontest {2  Public Static voidMain (string[] args) {3String jsonstr= "{\" id\ ": \" 101\ ", \" name\ ": \" Zhang san \ ", \" age\ ": \" 20\ ", \" birthday\ ": \" 1992-10-19 23:52:18\ "}";4Student s=NewStudent ();5Timestamp b=timestamp.valueof ("1992-10-19 23:52:18");6S.setid (123456);7S.setname ("John Doe");8S.setage (20);9 S.setbirthday (b);TenStudent s1=Jsontobean (JSONSTR); One System.out.println (S1.getbirthday ()); A System.out.println (Beantojson (s)); - } -  Public StaticStudent Jsontobean (String json) { theString[] formats={"Yyyy-mm-dd HH:mm:ss", "YYYY-MM-DD"}; -Jsonutils.getmorpherregistry (). Registermorpher (NewTimestampmorpher (formats)); -Jsonobject jsonobject=Jsonobject.fromobject (JSON); -     return(Student) Jsonobject.tobean (jsonobject,student.class); + } -  +  Public StaticString Beantojson (Student s) { AJsonconfig config=Newjsonconfig (); atConfig.registerjsonvalueprocessor (Timestamp.class,NewDatejsonvalueprocessor ("Yyyy-mm-dd HH:mm:ss")); -Jsonobject json=Jsonobject.fromobject (s,config); -     returnjson.tostring ();} -}

JSON-to-bean transfer, timestamp type problems