EnumSelectAction.java

package com.allinpay.its.boss.system.parseenum.action;

import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.allinpay.its.boss.framework.utils.CustomizedPropertyConfigurer;
import com.allinpay.its.boss.framework.utils.JsonUtil;
import com.allinpay.its.boss.system.BaseAction;
import com.allinpay.its.boss.system.parseenum.model.EnumModel;

/**
 * @date 2013-02-22
 * @author zhujf1
 * 
 */
@Controller
@RequestMapping(value = "/enumJson")
public class EnumSelectAction extends BaseAction {

	private Map<String, String> codes;

	@RequestMapping("")
	@ResponseBody
	public String getJsonData(EnumModel enumModel) throws Exception {

		Map<String, String> rstMap;

		rstMap = getEnumCodes(enumModel.getCvalue(), enumModel);
		// filter select data according include and exclude
		codes = new LinkedHashMap<String, String>();
		if (enumModel.getInclude() != null) {
			for (String key : enumModel.getInclude().split(",")) {
				key = key.trim();
				codes.put(key, (String) rstMap.get(key));
			}
		} else {
			Iterator<String> i = rstMap.keySet().iterator();
			List<String> exList = null;
			if (enumModel.getExclude() != null) {
				exList = Arrays.asList(enumModel.getExclude().split(","));
			}
			while (i.hasNext()) {
				String key = i.next();
				if (exList == null || !exList.contains(key)) {
					codes.put(key, (String) rstMap.get(key));
				}
			}
		}
		return JsonUtil.toDWZComboxData(codes, enumModel.getIsSelect());
	}

	@RequestMapping("/getEnumMapJson")
	@ResponseBody
	public String getMapEnumJsonStyle(EnumModel enumModel) {

		return JsonUtil.toJSONMapByObject(getEnumCodes(enumModel.getCvalue(),
				enumModel));
	}

	/**
	 * @return Map
	 */
	private Map<String, String> getEnumCodes(String cvalue, EnumModel enumModel) {
		Map<String, String> codes = new LinkedHashMap<String, String>();
		if (cvalue == null || cvalue.trim().length() == 0) {
			// return codes;
		}
		// 动态调用指定Java枚举类的固定方法：getDesc() 以获取代码与中文描述对应集合
		try {
			Class[] parameterTypes = null;
			/**
			 *  指定的Java枚举类必须在指定目录下，如果有新的路径可将此处代码稍做改动。
			 * 这个修改成在资源文件中配置需要搜索的java枚举所在的类路径包名,然后循环去找
			 */
			String  enumsPackage= (String)CustomizedPropertyConfigurer.getContextProperty("enums.package.name");
			String[] enumsPackages = enumsPackage.split(",");
//			String[] enumsPackage = new String[] {
//					"com.allinpay.its.util.metadata.",
//					"com.allinpay.its.boss.business.cms.enums." };
			Class enumClass = null;
			for (int i = 0; i < enumsPackages.length; i++) {
				try {
					enumClass = Class.forName(enumsPackages[i] + cvalue);
				} catch (ClassNotFoundException ex) {
					if (i == enumsPackages.length - 1) {
						return codes;
					}
					continue;
				}
			}
			Method getDesc = null;
			// 如果前台传回指定的方法名则不取默认方法：getCodes()
			if (enumModel.getMethod() != null
					&& enumModel.getMethod().trim().length() > 0) {
				getDesc = enumClass.getMethod(enumModel.getMethod(),
						parameterTypes);
			} else {
				getDesc = enumClass.getMethod("getCodes", parameterTypes);
			}
			Map<String, String> result = new LinkedHashMap<String, String>();
			Map tempMap = (Map) getDesc.invoke(null, new Object[] {});
			Iterator it = tempMap.keySet().iterator();
			while (it.hasNext()) {
				Object key = it.next();
				Object value = tempMap.get(key);
				result.put(String.valueOf(key), String.valueOf(value));
			}
			return result;
		} catch (NoSuchMethodException e) {
			return codes;
		} catch (Exception e) {
			return codes;
		}
	}

}