1.2 BaseController

BaseController继承自JFinal Controller，提供了一些公共的常用调用方法

package com.zshsoft.controller.base;

import java.math.BigDecimal;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;

import com.jfinal.core.Controller;
import com.jfinal.core.NotAction;
import com.jfinal.kit.Ret;
import com.jfinal.kit.StrKit;
import com.jfinal.render.JsonRender;
import com.jfinal.upload.UploadFile;
import com.zshsoft.web.kit.RequestUtils;
import com.zshsoft.web.vo.HMap;
import com.zshsoft.web.vo.PageData;
import com.zshsoft.web.vo.Tips;

import cn.hutool.core.util.NumberUtil;
import cn.hutool.json.JSONArray;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;

/***********************************************
 * 控制类基类，封装一些公用的方法
 * 
 * @author 周光
 * 
 */
public class BaseController extends Controller {
    private static Logger log = Logger.getLogger(BaseController.class);
    public final static String IDS = "ids";// ID集合储存变量
    public final static String ID = "id";

    /**
     * 重写getModel方法，使得表单name的前缀不区分大小写
     */
    @Override
    @NotAction
    public <T> T getModel(Class<T> modelClass) {
        return super.getModel(modelClass, "", true);
    }

    /********************************************
     * 获取Request中的参数
     * 
     * @return
     */
    protected Map<String, Object> getParaToMap() {
        Enumeration<String> enume = getParaNames();
        Map<String, Object> map = new HashMap<String, Object>();
        while (enume.hasMoreElements()) {
            String name = (String) enume.nextElement();
            Object value = getPara(name);
            map.put(name, value);
        }

        return map;
    }

    /******************************************************
     * 判断IE浏览器返回JSON格式，参数为一个对象类型
     * 
     * @param obj
     * @throws Exception
     */
    protected void renderObj(Object obj) {
        if (obj == null) {
            renderNull();
            return;
        }

        String header = getRequest().getHeader("User-Agent").toLowerCase();

        // IE10以下浏览器判断标准
        int msie = header.indexOf("msie");

        // IE11以上，没有MSIE字样了，改为trident
        int trident = header.indexOf("trident");

        boolean isIE = msie > 0 || trident > 0;// 判断是否在IE浏览器

        if (isIE) {
            // IE 不支持 application/json, 在 ajax 上传文件完成后返回 json时 IE 提示下载文件
            render(new JsonRender(obj).forIE());
        } else {
            renderJson(obj);
        }
    }

    @NotAction
    public float getParaToFloat() {
        String p = getPara();
        return new Float(p).floatValue();
    }

    @NotAction
    public float getParaToFloat(int i) {
        String p = getPara(i);
        return new Float(p).floatValue();
    }

    @NotAction
    public float getParaToFloat(String name) {
        String p = getPara(name);
        return new Float(p).floatValue();
    }

    @NotAction
    public byte[] getParaToByte(String name) {
        String p = getPara(name);
        return p.getBytes();
    }

    /****************************************************
     * 保存scale位小数
     * 
     * @param name
     * @param scale
     * @return
     */
    @NotAction
    public float getParaToFloat(String name, int scale) {
        String p = getPara(name);
        return NumberUtil.round(new Float(p).floatValue(), scale).floatValue();
    }

    /***********************************************************
     * 默认值
     * 
     * @param name
     * @param defaultValue
     * @return
     */
    @NotAction
    public float getParaToFloat(String name, float defaultValue) {
        String p = getPara(name);
        if (StrKit.isBlank(p)) {
            return defaultValue;
        }
        return new Float(p).floatValue();
    }

    /****************************************
     * 将参数对象转为BigDecimal类型
     * 
     * @return
     */
    @NotAction
    public BigDecimal getParaToBigDecimal() {
        String p = getPara();
        return new BigDecimal(p);
    }

    /***************************************************
     * 将参数对象转为BigDecimal类型
     * 
     * @param name 参数名称
     * @return
     */
    @NotAction
    public BigDecimal getParaToBigDecimal(String name) {
        String p = getPara(name);
        return new BigDecimal(p);
    }

    /****************************************************************************
     * 将参数对象转为BigDecimal类型
     * 
     * @param name         参数名称
     * @param defaultValue 默认值
     * @return
     */
    @NotAction
    public BigDecimal getParaToBigDecimal(String name, String defaultValue) {
        String p = getPara(name);
        if (StrKit.isBlank(p)) {
            return new BigDecimal(defaultValue);
        }
        return new BigDecimal(p);
    }

    /********************************************
     * 将参数对象转为BigDecimal类型
     * 
     * @param n
     * @return
     */
    @NotAction
    public BigDecimal getParaToBigDecimal(int n) {
        String p = getPara(n);
        return new BigDecimal(p);
    }

    /******************************************************************
     * 将参数对象转为BigDecimal类型
     * 
     * @param n
     * @param defaultValue
     * @return
     */
    @NotAction
    public BigDecimal getParaToBigDecimal(int n, String defaultValue) {
        String p = getPara(n);
        if (StrKit.isBlank(p)) {
            return new BigDecimal(defaultValue);
        }
        return new BigDecimal(p);
    }

    /**********************************************************************
     * 默认值，并且保留scale位小数
     * 
     * @param name
     * @param defaultValue
     * @param scale
     * @return
     */
    @NotAction
    public float getParaToFloat(String name, float defaultValue, int scale) {
        String p = getPara(name);
        if (StrKit.isBlank(p)) {
            return defaultValue;
        }
        return NumberUtil.round(new Float(p).floatValue(), scale).floatValue();
    }


    /**********************************************
     * 
     * @param name
     * @return
     */
    @NotAction
    public String getParaValueToStr(String name) {
        String[] values = getParaValues(name);
        return StringUtils.join(values, ",");
    }

    /******************************************************************
     * 
     * @param name
     * @param defaultValue
     * @return
     */
    @NotAction
    public String getParaValueToStr(String name, String defaultValue) {
        String[] values = getParaValues(name);
        if (null == values || values.length == 0) {
            return defaultValue;
        }
        return StringUtils.join(values, ",");
    }

    /************************************************************************
     * 返回EasyUI DataGrid格式数据
     * 
     * @param data
     * @throws Exception
     */
    protected void renderDataGrid(HMap data) {
        renderObj(data);
    }

    /*******************************************
     * 默认操作成功
     * 
     * @throws Exception
     */
    protected void renderOK() {
        renderObj(Ret.ok("msg", "操作成功！"));
    }

    /*******************************************
     * 默认操作成功
     * 
     * @throws Exception
     */
    protected void renderOK(Ret ret) {
        renderObj(Ret.ok("msg", "操作成功！").set(ret));
    }

    /*******************************************
     * 操作成功，传入参数
     * 
     * @throws Exception
     */
    protected void renderOK(String msg) {
        renderObj(Ret.ok("msg", msg));
    }

    /*******************************************
     * 操作成功，是否显示提示窗口
     * 
     * @throws Exception
     */
    protected void renderOK(boolean showTip) {
        renderObj(Ret.ok("msg", "操作成功！").set("showTip", showTip));
    }

    /***********************************************
     * 操作成功
     * 
     * @param msg
     * @param info
     */
    protected void renderOK(String msg, String info) {
        renderObj(Ret.ok("msg", msg).set("info", info));
    }

    /*************************************
     * 
     * @param url
     */
    protected void renderUrl(String url) {
        renderObj(Ret.ok("msg", "操作成功！").set("url", url));
    }

    /*************************************************
     * 
     * @param msg
     * @param url
     */
    @NotAction
    public void renderUrl(String msg, String url) {
        renderObj(Ret.ok("msg", msg).set("url", url));
    }

    /**************************************************************
     * 
     * @param flag
     * @param msg
     * @param url
     */
    protected void renderUrl(boolean flag, String msg, String url) {
        renderObj(Ret.ok("msg", msg).set("url", url).set("flag", flag));
    }

    /***********************************************
     * 操作成功
     * 
     * @param msg
     * @param info
     */
    protected void renderOK(String msg, Map<Object, Object> data) {
        renderObj(Ret.ok("msg", msg).set(data));
    }

    /*******************************************
     * 默认操作成功
     * 
     * @throws Exception
     */
    protected void renderErr() {
        renderObj(Ret.fail("err", "操作失败！"));
    }

    /******************************************************
     * 操作失败提示信息
     * 
     * @param err
     * @throws Exception
     */
    @NotAction
    public void renderErr(String err) {
        renderObj(Ret.fail("err", err));
    }

    /*******************************************************
     * 操作失败提示信息
     * 
     * @param e
     * @throws Exception
     */
    protected void renderErr(Exception e) {
        // String err = PubKit.getExceptionStackTrace(e);
        e.printStackTrace();
        renderObj(Ret.fail("err", e.getMessage()));
    }

    /*******************************************************
     * 操作失败提示信息,并打印错误信息在控制台
     * 
     * @param e
     * @throws Exception
     */
    protected void renderErr(Exception e, boolean print) {
        if (print) {
            e.printStackTrace();
        }

        String err = e.getMessage();

        renderObj(Ret.fail("err", err));
    }

    @NotAction
    public void renderStatus(String status, String info) {
        renderObj(Ret.create("status", status).set("info", info));
    }

    private final static String URL_SUCCESS = "/show_info.html";
    private final static String URL_ERROR = "/eapdomain/_inc/500.html";

    /**************************
     * 跳转到成功页面
     */
    @NotAction
    public void renderSuccess() {
        setAttr("tip", new Tips());
        render(URL_SUCCESS);
    }

    @NotAction
    public void renderSuccess(String msg) {
        Tips tip = new Tips();
        tip.setText(msg);
        setAttr("tip", tip);
        render(URL_SUCCESS);
    }

    @NotAction
    public void renderSuccess(String msg, String url) {
        Tips tip = new Tips();
        tip.setText(msg);
        setAttr("tip", tip);
        render(url);
    }

    /**************************
     * 转到错误提示页面
     */
    @NotAction
    public void renderTipErr() {
        Tips tip = new Tips();
        tip.setText("操作失败！");
        setAttr("tip", tip);
        render(URL_ERROR);
    }

    /*************************************
     * 转到错误提示页面
     * 
     * @param err
     */
    @NotAction
    public void renderTipErr(String err) {
        Tips tip = new Tips();
        tip.setText(err);
        setAttr("tip", tip);
        render(URL_ERROR);
    }

    /*************************************
     * 转到错误提示页面
     * 
     * @param err
     */
    @NotAction
    public void renderTipErr(String err, String url) {
        Tips tip = new Tips();
        tip.setText(err);
        setAttr("tip", tip);
        render(url);
    }

    /**************************************
     * 转到错误提示页面
     * 
     * @param e
     */
    @NotAction
    public void renderTipErr(Exception e) {
        e.printStackTrace();
        Tips tip = new Tips();
        tip.setText(e.getMessage());
        setAttr("tip", tip);
        render(URL_ERROR);
    }

    @NotAction
    public Map<String, String> getParaToStringMap() {
        Enumeration<String> enume = getParaNames();
        Map<String, String> map = new HashMap<String, String>();
        while (enume.hasMoreElements()) {
            String name = (String) enume.nextElement();
            map.put(name, getPara(name));
        }
        return map;
    }

    /**
     * 是否是手机浏览器
     * 
     * @return
     */
    @NotAction
    public boolean isMoblieBrowser() {
        return RequestUtils.isMoblieBrowser(getRequest());
    }

    /**
     * 是否是微信浏览器
     * 
     * @return
     */
    @NotAction
    public boolean isWechatBrowser() {
        return RequestUtils.isWechatBrowser(getRequest());
    }

    /**
     * 是否是IE浏览器
     * 
     * @return
     */
    @NotAction
    public boolean isIEBrowser() {
        return RequestUtils.isIEBrowser(getRequest());
    }

    /**
     * 是否是ajax请求
     * 
     * @return
     */
    @NotAction
    public boolean isAjaxRequest() {
        return RequestUtils.isAjaxRequest(getRequest());
    }

    /**
     * 是否是multpart的请求（带有文件上传的请求）
     * 
     * @return
     */
    @NotAction
    public boolean isMultipartRequest() {
        return RequestUtils.isMultipartRequest(getRequest());
    }

    /**
     * 获取ip地址
     * 
     * @return
     */
    @NotAction
    public String getIPAddress() {
        return RequestUtils.getIpAddress(getRequest());
    }

    /**
     * 获取 referer
     * 
     * @return
     */
    @NotAction
    public String getReferer() {
        return RequestUtils.getReferer(getRequest());
    }

    /**
     * 获取ua
     * 
     * @return
     */
    @NotAction
    public String getUserAgent() {
        return RequestUtils.getUserAgent(getRequest());
    }

    protected HashMap<String, Object> flash;

    @NotAction
    public Controller setFlashAttr(String name, Object value) {
        if (flash == null) {
            flash = new HashMap<String, Object>();
        }

        flash.put(name, value);
        return this;
    }

    @NotAction
    public Controller setFlashMap(Map<String, Object> map) {
        if (map == null) {
            throw new NullPointerException("map is null");
        }
        if (flash == null) {
            flash = new HashMap<String, Object>();
        }

        flash.putAll(map);
        return this;
    }

    @SuppressWarnings("unchecked")
    @NotAction
    public <T> T getFlashAttr(String name) {
        return flash == null ? null : (T) flash.get(name);
    }

    @NotAction
    public HashMap<String, Object> getFlashAttrs() {
        return flash;
    }

    /**
     * 获取当前网址
     * 
     * @return
     */
    @NotAction
    public String getBaseUrl() {
        HttpServletRequest req = getRequest();
        int port = req.getServerPort();

        return port == 80 ? String.format("%s://%s%s", req.getScheme(), req.getServerName(), req.getContextPath())
                : String.format("%s://%s%s%s", req.getScheme(), req.getServerName(), ":" + port, req.getContextPath());

    }

    /**
     * 获取所有上传的文件
     * 
     * @return
     */
    @NotAction
    public HashMap<String, UploadFile> getUploadFilesMap() {
        if (!isMultipartRequest()) {
            return null;
        }

        List<UploadFile> fileList = getFiles();
        HashMap<String, UploadFile> filesMap = null;
        if (fileList != null && fileList.size() > 0) {
            filesMap = new HashMap<String, UploadFile>();
            for (UploadFile ufile : fileList) {
                filesMap.put(ufile.getParameterName(), ufile);
            }
        }
        return filesMap;
    }

    @NotAction
    public PageData getPageData() {
        return new PageData(getRequest());
    }

    @NotAction
    public void renderErrPage(String err) {
        Ret ret = Ret.fail("err", err);
        set("ret", ret);
        render("/eapdomain/_inc/500.html");
    }

    @NotAction
    public void renderErrPage() {
        renderErrPage("系统出错！");
    }

    @NotAction
    public void renderErrPage(Exception e) {
        e.printStackTrace();
        renderErrPage(e.getMessage());
    }

    @NotAction
    public void renderMsgPage(String path, String msg) {
        Ret ret = Ret.create();
        ret.set("msg", msg);
        set("ret", ret);
        render(path + "/msg.html");
    }

    @NotAction
    public void renderMsgPage(String msg) {
        renderMsgPage("/drug", msg);
    }

    @NotAction
    public void renderMsgPage(Exception ex) {
        ex.printStackTrace();
        renderMsgPage(ex.getMessage());
    }

    @NotAction
    public JSONObject getJSONObject() {
        String inputData = getRawData();
        return JSONUtil.parseObj(inputData);
    }

    @NotAction
    public JSONArray getJSONArray() {
        String inputData = getRawData();
        return JSONUtil.parseArray(inputData);
    }
}