Java Reflection-mapping form values to model __java

Recall the long history of programming life Road, can not help but feel sad, perhaps this is the first time in my life more formal use of reflection (/ω╲), not nonsense, see the code:

Import java.lang.reflect.InvocationTargetException;
Import Java.lang.reflect.Method;
Import java.util.ArrayList;
Import java.util.Enumeration;
Import Java.util.HashMap;
Import java.util.List;
Import Java.util.Map;
Import Javax.servlet.http.HttpServletRequest;

Import org.nutz.lang.Strings; /** * @author Ai Xiaotian * need to return the Object strong into a first pass in model on the line * * public class Formutil {private static final string string = "java.lang.String";//for type judgement in reflection private static final String INTEGER = "Java.lang.Integer";//for type judgement in reflection private s Tatic final String BOOLEAN = "Java.lang.Boolean";//for type judgement in reflection private static final String domain = "domain.";/ /form the uniform prefix of each field, ps:domain.id private static final String SET = "set";//To get model SET method, assign value to property/** * * @ PARAM request * @param target: The model class that needs to be mapped * @return/public static Object Getdomainmap (HttpServlet
        Request request, Object target) {map<string, object> dr = new Hashmap<> (); BeenTake all the forms in domain.
        The field value that begins with the enumeration<string> e = Request.getparameternames () in the Dr.
            while (E.hasmoreelements ()) {String paramname = e.nextelement (); if (! Strings.isblank (paramname) && Paramname.startswith (DOMAIN) {dr.put paramname.substring (7). Touppe
            Rcase (), Request.getparameter (paramname)); //Get all set** methods in model list<method> Methodarr = GetSetMethod (Target.getclass (). GetName (
        ));
            For (method Method:methodarr) {String propertname = method.getname (). substring (3). toUpperCase ();
        By traversing all set methods, the value is passed to the corresponding property SetParam (method, Dr.get (propertname), target);
    return target; /** * Get all methods with set** in model; * @param pkgname: Class full path name * @return/@SuppressWarnings ({"R Awtypes "," Unchecked "}) private static list<method> GetSetMethod (String pkgname) {list<method>Methodarr = new ArrayList ();
           try {Class clazz = Class.forName (pkgname);
           Method[] methods = Clazz.getmethods ();
               For (method Method:methods) {String methodname = Method.getname ();
               if (Methodname.indexof (SET) = = 0) {Methodarr.add (method);
       A catch (ClassNotFoundException e) {e.printstacktrace ());
   return Methodarr; /** * Call the method in model to pass the value to the corresponding property * @param method:model method * @param value: corresponding set * @param target: The model class that needs to be mapped/private static void SetParam (method method, object value, Object target) {class<?>[
       ] Parametertypes = Method.getparametertypes ();
       There is generally only one parameter, directly taking [0] the String paramtype = Parametertypes[0].getname (); if (! Strings.isblank (paramtype) && value!= null &&! "". Equals (value)) {The try {//model corresponds to only these three types of data in the form.There is a need to add switch (paramtype) {case STRING:method.invoke (target, VA
                       Lue.tostring ());

                   Break
                       Case INTEGER:method.invoke (Target, New INTEGER (Value.tostring ()));

                   Break
                       Case BOOLEAN:method.invoke (Target, New BOOLEAN (Value.tostring ()));

                   Break
                       Default:method.invoke (Target, value.tostring ());
               Break catch (Illegalaccessexception | IllegalArgumentException |
            InvocationTargetException e) {e.printstacktrace ();; }
       }
   }

}