Map to bean map to Bean

Package com. Wen. test;

Import java. Lang. Reflect. field;
Import java. Lang. Reflect. method;
Import java. Math. bigdecimal;
Import java. Text. simpledateformat;
Import java. util. date;
Import java. util. hashmap;
Import java. util. Map;

Public class test {

/**
* Map to Bean
* @ Param mpfrom
* @ Param objto
* @ Return
*/
Public static object maptobean (MAP mpfrom, object objto ){
Object [] objkeys = mpfrom. keyset (). toarray ();
String strfieldname = "";

Try {
For (Object objkey: objkeys ){
Strfieldname = objkey. tostring ();

Field objfield = objto. getclass (). getdeclaredfield (
Strfieldname. tolowercase ());
Objfield. setaccessible (true );

Objfield. Set (objto, mpfrom. Get (strfieldname ));
}
} Catch (exception e ){
E. printstacktrace ();
}
Return objto;
}

/**
* Map to Bean
* @ Param Map
* @ Param CLS
* @ Return
*/
Public static object map2bean (MAP map, class CLs ){
Object OBJ = NULL;
Try {
OBJ = Cls. newinstance ();
} Catch (exception e ){
E. printstacktrace ();
}
// Retrieve all the methods in bean
Method [] Methods = Cls. getmethods ();
For (INT I = 0; I <methods. length; I ++ ){
// Obtain the method name
String method = methods [I]. getname ();
// Type of the fetch Method
Class [] cc = methods [I]. getparametertypes ();
If (CC. length! = 1)
Continue;

// If the method name does not start with set, exit this
If (method. indexof ("set") <0)
Continue;
// Type
String type = Cc [0]. getsimplename ();

Try {
// Convert to lowercase
// Object value = method. substring (3). tolowercase ();
Object value = method. substring (3, 4). tolowercase ()
+ Method. substring (4 );
System. Out. println ("value =" + value );
// If the key exists in the map
If (Map. containskey (value) & map. Get (value )! = NULL ){
// Call its underlying method
Setvalue (type, map. Get (value), I, methods, OBJ );
}
} Catch (exception e ){
E. printstacktrace ();
}
}
Return OBJ;
}

/*************************************** ************************************
* Call the underlying method setting value
*/
Private Static void setvalue (string type, object value, int I,
Method [] method, object bean ){
If (value! = NULL &&! Value. Equals ("")){
Try {
If (type. Equals ("string ")){
// The first parameter: The second parameter of the object from which the basic method is called: The parameter used for method call
Method [I]. Invoke (bean, new object [] {value });
} Else if (type. Equals ("int") | type. Equals ("integer ")){
Method [I]. Invoke (bean, new object [] {New INTEGER (""
+ Value )});
} Else if (type. Equals ("double") | type. Equals ("double ")){
Method [I]. Invoke (bean, new object [] {New Double (""
+ Value )});
} Else if (type. Equals ("float") | type. Equals ("float ")){
Method [I]. Invoke (bean, new object [] {New float (""
+ Value )});
} Else if (type. Equals ("long") | type. Equals ("long ")){
Method [I]. Invoke (bean,
New object [] {New Long ("" + value )});
} Else if (type. Equals ("Boolean") | type. Equals ("Boolean ")){
Method [I]. Invoke (bean, new object [] {Boolean. valueof (""
+ Value )});
} Else if (type. Equals ("bigdecimal ")){
Method [I]. Invoke (bean, new object [] {New bigdecimal (""
+ Value )});
} Else if (type. Equals ("date ")){
Date = NULL;
If (value. getclass (). getname (). Equals ("Java. util. date ")){
Date = (date) value;
} Else {
String format = (string) value). indexof (":")> 0? "Yyyy-mm-dd hh: mm: SS"
: "Yyyy-mm-dd ";
Simpledateformat Sf = new simpledateformat ();
SF. applypattern (format );
Date = SF. parse (string) (value ));
}
If (date! = NULL ){
Method [I]. Invoke (bean, new object [] {date });
}
} Else if (type. Equals ("byte []") {
Method [I]. Invoke (bean,
New object [] {New String (Value + ""). getbytes ()});
}
} Catch (exception e ){
System. Out
. Println ("An error occurred while filling the value in linkhashmap or hashtable into JavaBean. Please check! ");
E. printstacktrace ();
}
}
}

Public static void main (string [] ARGs ){
User user = new user ();
Map map = new hashmap ();
// Map. Put ("userid", "123 ");
// Map. Put ("username", "username123 ");
// Map. Put ("usertel", "usertel123 ");
Map. Put ("Age", 234 );
Map. Put ("CREATE", new date ());
Map. Put ("currency", new bigdecimal (123). setscale (2 ));
Map. Put ("score", 23.33323 );
Long start = system. currenttimemillis ();
User = (User) map2bean (MAP, user. getclass ());
Long end = system. currenttimemillis ();
System. Out. println ("time =" + (end-Start ));
System. Out. println (user. tostring ());
}
}
 
Class user {

Private string userid;
Private long age;
Private Double score;
Private date create;

Private string username;
Private bigdecimal money;

Private string usertel;

Public String getuserid (){
Return userid;
}

Public void setuserid (string userid ){
This. userid = userid;
}

Public String GetUserName (){
Return username;
}

Public void setusername (string username ){
This. Username = username;
}

Public String getusertel (){
Return usertel;
}

Public void setusertel (string usertel ){
This. usertel = usertel;
}

/**
* @ Return the age
*/
Public long getage (){
Return age;
}

/**
* @ Param age the age to set
*/
Public void setage (long age ){
This. Age = age;
}

/* (Non-javadoc)
* @ See java. Lang. Object # tostring ()
*/
@ Override
Public String tostring (){
System. Out. println ("age =" + age );
System. Out. println ("usertel =" + usertel );
System. Out. println ("username =" + username );
System. Out. println ("userid =" + userid );
System. Out. println ("score =" + score );
System. Out. println ("create =" + create );
System. Out. println ("Money =" + money );
Return super. tostring ();
}

/**
* @ Return the score
*/
Public double getscore (){
Return score;
}

/**
* @ Param score the score to set
*/
Public void setscore (Double score ){
This. Score = score;
}

/**
* @ Return the create
*/
Public date getcreate (){
Return create;
}

/**
* @ Param create the create to set
*/
Public void setcreate (date create ){
This. Create = create;
}

/**
* @ Return the money
*/
Public bigdecimal getmoney (){
Return money;
}

/**
* @ Param money the money to set
*/
Public void setmoney (bigdecimal money ){
This. Money = money;
}


}