import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;import com.xxx.entity.Call;import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;public class ReflectUtils {@SuppressWarnings("rawtypes")public static Map<String,Class> getPoJoFiled(Class cls){Map<String,Class> names=new HashMap<>();Field[] fileds=cls.getDeclaredFields();for(Field filed:fileds){names.put(filed.getName(), filed.getType());}return names;}@SuppressWarnings("rawtypes")public static List<String> getSetMethodName(Class cls){List<String> methodNames=new ArrayList<>();Method[] methods =cls.getDeclaredMethods();for(Method method:methods){if(method.getName().startsWith("set")){methodNames.add(method.getName());}}return methodNames;}    private static String getMethodNameByField(List<String> methodNames, String filedName) {for (String method : methodNames) {if (method.toLowerCase().equalsIgnoreCase("set" + filedName)) {return method;}}return "";}

    @SuppressWarnings({ "unchecked", "rawtypes" })public static void initInstance(Object instance,String param) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException{Class cls=instance.getClass();Map<String,Class> fieldNames=ReflectUtils.getPoJoFiled(cls);List<String> methodNames=ReflectUtils.getSetMethodName(cls);for(Entry<String,Class> field:fieldNames.entrySet()){String filedName=field.getKey();String methodName=getMethodNameByField(methodNames,filedName);Method setMethodName = cls.getMethod(methodName, fieldNames.get(filedName));String type=fieldNames.get(filedName).getName();if(type.equals("java.lang.String")) {setMethodName.invoke(instance, new Object[] {param});}else if(type.equals("int") || type.equals("java.lang.Integer")) {setMethodName.invoke(instance, new Object[] {new Integer(param)});}else if(type.equals("long") || type.equals("java.lang.Long")) {setMethodName.invoke(instance, new Object[] {new Long(param)});}else if (type.equals("float") || type.equals("java.lang.Float")) {　　　　　　　　　　　　setMethodName.invoke(instance, new Object[]{new Float(param)});

　　　　　　　　　　　　} else if(type.equals("boolean") || type.equals("java.lang.Boolean")) {

                    setMethodName.invoke(instance, new Object[] { Boolean.valueOf(param) });}else if(type.equals("java.util.Date")) {Date date = DateUtil.parseDateTime(param);if(date!=null)setMethodName.invoke(instance, new Object[] {date});}}}public static void main(String[] args) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException {String param="20";Call call=new Call();initInstance(call,param);System.out.println(call.toString());}

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class DateUtil {/*** 得到当前的时间,自定义时间格式 y 年 M 月 d 日 H 时 m 分 s 秒* @param dateFormat 输出显示的时间格式* @return*/public final static String defaultFormat = "yyyy-MM-dd HH:mm:ss";public static String getCurrentDate(String dateFormat) {SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);return sdf.format(new Date());}public static Date parseDateTime(String date){SimpleDateFormat formatter = new SimpleDateFormat(defaultFormat);Date newDate = null;try {newDate = formatter.parse(date);} catch (ParseException e) {e.printStackTrace();}return newDate;}
}