Jfinal 关于JspRender的完善，jfinaljsprender,/** * Copyri

Jfinal 关于JspRender的完善，jfinaljsprender,/** * Copyri

/** * Copyright (c) 2011-2012, laojianhua. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.jfinal.render;import java.lang.reflect.Field;import java.lang.reflect.Method;import java.util.ArrayList;import java.util.Enumeration;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import java.util.Set;import java.util.Map.Entry;import javax.servlet.http.HttpServletRequest;import com.jfinal.plugin.activerecord.CPI;import com.jfinal.plugin.activerecord.Model;import com.jfinal.plugin.activerecord.Page;import com.jfinal.plugin.activerecord.Record;import com.jfinal.util.StringKit;/** * JspRender. */@SuppressWarnings( { "serial", "rawtypes", "unchecked" })class JspRender extends Render {    private transient static boolean isSupportActiveRecord = true;    static void setSupportActiveRecord(boolean supportActiveRecord) {        JspRender.isSupportActiveRecord = supportActiveRecord;    }    public JspRender(String view) {        this.view = view;    }    public void render() {        try {            if (isSupportActiveRecord)                supportActiveRecord(request);            request.getRequestDispatcher(view).forward(request, response);        } catch (Exception e) {            throw new RenderException(e);        }    }    private void supportActiveRecord(HttpServletRequest request) {        for (Enumeration<String> attrs = request.getAttributeNames(); attrs                .hasMoreElements();) {            String key = attrs.nextElement();            Object value = request.getAttribute(key);            if (value instanceof Model) {                request.setAttribute(key, handleModel((Model) value));            } else if (value instanceof Record) {                request.setAttribute(key, handleRecord((Record) value));            } else if (value instanceof List) {                request.setAttribute(key, handleList((List) value));            } else if (value instanceof Model[]) {                request.setAttribute(key, handleModelArray((Model[]) value));            } else if (value instanceof Record[]) {                request.setAttribute(key, handleRecordArray((Record[]) value));            } else if (value instanceof Page) {                request.setAttribute(key, handlePage((Page) value));            }else if (value instanceof Map)  {                request.setAttribute(key, iteratorMap((Map)value));            }        }    }    private Map<String, Object> handleModel(Model model) {        return CPI.getAttrs(model);    }    private Map<String, Object> handleRecord(Record record) {        return record.getColumns();    }    private List<Map<String, Object>> handleModelList(List<Model> list) {        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>(                list.size());        for (Model model : list)            result.add(CPI.getAttrs(model));        return result;    }    private List<Map<String, Object>> handleRecordList(List<Record> list) {        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>(                list.size());        for (Record record : list)            result.add(record.getColumns());        return result;    }    private List<Map<String, Object>> handleModelArray(Model[] array) {        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>(                array.length);        for (Model model : array)            result.add(CPI.getAttrs(model));        return result;    }    private List<Map<String, Object>> handleRecordArray(Record[] array) {        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>(                array.length);        for (Record record : array)            result.add(record.getColumns());        return result;    }    //-----------------------------add by laojianhua----------------------------------------------    private List<Map<String, Object>> handleList(List value){        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>();        List temp = (List) value;        if (temp.size() > 0) {            Object o = temp.get(0);            if (o instanceof Model)                result = handleModelList((List<Model>) value);            else if (o instanceof Record)                result = handleRecordList((List<Record>) value);            else if (o instanceof Map)                result = handleMapList((List<Map<String, Object>>) value);            else{                for(int i=0;i<value.size();i++){                    Object tempList = value.get(i);                    result.add(iteratorObject(tempList));                }            }        }        return result;    }    private List<Map<String, Object>> handleMapList(List<Map<String, Object>> list) {        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>(                list.size());        for (Map<String, Object> map : list) {            for (Entry<String, Object> e : map.entrySet()) {                if (e.getValue() instanceof Model) {                    map.put(e.getKey(), CPI.getAttrs((Model) e.getValue()));                }else{                    map.put(e.getKey(), e.getValue());                }            }            result.add(map);        }        return result;    }    private Map<String, Object> handlePage(Page Object) {        return iteratorObject(Object);    }    // 遍历实体对像    private Map<String, Object> iteratorObject(Object o) {        Map<String, Object> map = new HashMap<String, Object>();        Method[] sourceMethods = o.getClass().getMethods();        for (int i = 0; i < sourceMethods.length; i++) {            if (sourceMethods[i].getName().startsWith("get")) {                String typeString = sourceMethods[i].getReturnType().getName(); // 类型                int index = typeString.lastIndexOf(".") + 1;                String type = typeString.substring(index);                String packageStr = "";                if(index == 0){                    packageStr = "java.lang";                }else{                    packageStr = typeString.substring(0,index-1);                }                String filed = StringKit.firstCharToLowerCase(sourceMethods[i].getName().substring(3)); // 属性                try {                    Object value;                    if (sourceMethods[i].invoke(o, null) == null) {                        value = "";                    } else {                        value = sourceMethods[i].invoke(o, null);                    }                    if(value instanceof Model){                        map.put(filed, handleModel((Model) value));                    }else if(value instanceof List){                        map.put(filed,handleList((List)value));                    }else if(value instanceof Map){                        map.put(filed,iteratorMap((Map)value));                    }else if(packageStr.equals("java.lang")||packageStr.equals("java.util")||packageStr.equals("java.math")){                        map.put(filed, value);                    }else{                        map.put(filed, iteratorObject(value));                    }                    // System.out.println(type + " " + filed + "=" + value);                } catch (Exception e) {                    e.printStackTrace();                }            }        }        return map;    }    // 遍历Map对像    private Map<String, Object> iteratorMap(Map map) {        Map<String, Object> result = new HashMap<String, Object>();        Set set = map.entrySet();        Iterator iterator = set.iterator();        while (iterator.hasNext()) {            Map.Entry mapentry = (Map.Entry) iterator.next();            String objectType = mapentry.getValue().getClass().toString();            int lastIndex = objectType.lastIndexOf(".");            String type = objectType.substring(lastIndex + 1, objectType.length());            String packageStr = objectType.substring(0,lastIndex);            if (packageStr.equals("java.lang")||packageStr.equals("java.util")||packageStr.equals("java.math")) {                if(type.equals("Map")){                    result.put(mapentry.getKey().toString(),iteratorMap((Map)mapentry.getValue()));                }else if(type.equals("List")){                    map.put(mapentry.getKey().toString(),handleList((List)mapentry.getValue()));                }else{                    result.put(mapentry.getKey().toString(), mapentry.getValue());                }                //System.out.println(mapentry.getKey() + " = " + mapentry.getValue() + " " + mapentry.getValue().getClass());            } else {                //自定义对像                result.put(mapentry.getKey().toString(),iteratorObject(mapentry.getValue()));                //System.out.println("键为：" + mapentry.getKey() + " ;对像为："+ mapentry.getValue().getClass());            }        }        return result;    }}//该片段来自于http://byrx.net