template.process(root, out)的用法（shiro项目中来的九）

假如你现在还在为自己的技术担忧，假如你现在想提升自己的工资，假如你想在职场上获得更多的话语权，假如你想顺利的度过35岁这个魔咒，假如你想体验BAT的工作环境，那么现在请我们一起开启提升技术之旅吧，详情请点击http://106.12.206.16:8080/qingruihappy/index.html

1 Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), "utf-8"));
            Template template = getTemplate(ftlName, ftlPath);
            template.process(root, out);

    public static Template getTemplate(String ftlName, String ftlPath) throws Exception{
        try {
            Configuration cfg = new Configuration();                                                  //通过Freemaker的Configuration读取相应的ftl
            cfg.setEncoding(Locale.CHINA, "utf-8");
            cfg.setDirectoryForTemplateLoading(new File(PathUtil.getClassResources()+"/ftl/"+ftlPath));        //设定去哪里读取相应的ftl模板文件
            Template temp = cfg.getTemplate(ftlName);                                                //在模板文件目录中找到名称为name的文件
            return temp;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

template 就是获取的模板

package com.fh.controller.${packageName}.${objectNameLower};

import java.io.PrintWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Resource;
import org.springframework.beans.propertyeditors.CustomDateEditor;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import com.fh.controller.base.BaseController;
import com.fh.entity.Page;
import com.fh.util.AppUtil;
import com.fh.util.ObjectExcelView;
import com.fh.util.PageData;
import com.fh.util.Jurisdiction;
import com.fh.util.Tools;
import com.fh.service.${packageName}.${objectNameLower}.${objectName}Manager;

/** 
 * 说明：${TITLE}
 * 创建人：FH Q313596790
 * 创建时间：${nowDate?string("yyyy-MM-dd")}
 */
@Controller
@RequestMapping(value="/${objectNameLower}")
public class ${objectName}Controller extends BaseController {
    
    String menuUrl = "${objectNameLower}/list.do"; //菜单地址(权限用)
    @Resource(name="${objectNameLower}Service")
    private ${objectName}Manager ${objectNameLower}Service;
    
    /**保存
     * @param
     * @throws Exception
     */
    @RequestMapping(value="/save")
    public ModelAndView save() throws Exception{
        logBefore(logger, Jurisdiction.getUsername()+"新增${objectName}");
        if(!Jurisdiction.buttonJurisdiction(menuUrl, "add")){return null;} //校验权限
        ModelAndView mv = this.getModelAndView();
        PageData pd = new PageData();
        pd = this.getPageData();
        pd.put("${objectNameUpper}_ID", this.get32UUID());    //主键
<#list fieldList as var><#if var[3] == "否"><#if var[1] == "Date">        pd.put("${var[0]}", Tools.date2Str(new Date()));    //${var[2]}
<#elseif var[1] == "Integer">        pd.put("${var[0]}", "${var[4]?replace("无",0)}");    //${var[2]}
<#elseif var[1] == "Double">        pd.put("${var[0]}", "${var[4]?replace("无",0)}");    //${var[2]}
<#else>        pd.put("${var[0]}", "${var[4]?replace("无","")}");    //${var[2]}
</#if></#if></#list>        ${objectNameLower}Service.save(pd);
        mv.addObject("msg","success");
        mv.setViewName("save_result");
        return mv;
    }
    
    /**删除
     * @param out
     * @throws Exception
     */
    @RequestMapping(value="/delete")
    public void delete(PrintWriter out) throws Exception{
        logBefore(logger, Jurisdiction.getUsername()+"删除${objectName}");
        if(!Jurisdiction.buttonJurisdiction(menuUrl, "del")){return;} //校验权限
        PageData pd = new PageData();
        pd = this.getPageData();
        ${objectNameLower}Service.delete(pd);
        out.write("success");
        out.close();
    }
    
    /**修改
     * @param
     * @throws Exception
     */
    @RequestMapping(value="/edit")
    public ModelAndView edit() throws Exception{
        logBefore(logger, Jurisdiction.getUsername()+"修改${objectName}");
        if(!Jurisdiction.buttonJurisdiction(menuUrl, "edit")){return null;} //校验权限
        ModelAndView mv = this.getModelAndView();
        PageData pd = new PageData();
        pd = this.getPageData();
        ${objectNameLower}Service.edit(pd);
        mv.addObject("msg","success");
        mv.setViewName("save_result");
        return mv;
    }
    
    /**列表
     * @param page
     * @throws Exception
     */
    @RequestMapping(value="/list")
    public ModelAndView list(Page page) throws Exception{
        logBefore(logger, Jurisdiction.getUsername()+"列表${objectName}");
        //if(!Jurisdiction.buttonJurisdiction(menuUrl, "cha")){return null;} //校验权限(无权查看时页面会有提示,如果不注释掉这句代码就无法进入列表页面,所以根据情况是否加入本句代码)
        ModelAndView mv = this.getModelAndView();
        PageData pd = new PageData();
        pd = this.getPageData();
        String keywords = pd.getString("keywords");                //关键词检索条件
        if(null != keywords && !"".equals(keywords)){
            pd.put("keywords", keywords.trim());
        }
        page.setPd(pd);
        List<PageData>    varList = ${objectNameLower}Service.list(page);    //列出${objectName}列表
        mv.setViewName("${packageName}/${objectNameLower}/${objectNameLower}_list");
        mv.addObject("varList", varList);
        mv.addObject("pd", pd);
        mv.addObject("QX",Jurisdiction.getHC());    //按钮权限
        return mv;
    }
    
    /**去新增页面
     * @param
     * @throws Exception
     */
    @RequestMapping(value="/goAdd")
    public ModelAndView goAdd()throws Exception{
        ModelAndView mv = this.getModelAndView();
        PageData pd = new PageData();
        pd = this.getPageData();
        mv.setViewName("${packageName}/${objectNameLower}/${objectNameLower}_edit");
        mv.addObject("msg", "save");
        mv.addObject("pd", pd);
        return mv;
    }    
    
     /**去修改页面
     * @param
     * @throws Exception
     */
    @RequestMapping(value="/goEdit")
    public ModelAndView goEdit()throws Exception{
        ModelAndView mv = this.getModelAndView();
        PageData pd = new PageData();
        pd = this.getPageData();
        pd = ${objectNameLower}Service.findById(pd);    //根据ID读取
        mv.setViewName("${packageName}/${objectNameLower}/${objectNameLower}_edit");
        mv.addObject("msg", "edit");
        mv.addObject("pd", pd);
        return mv;
    }    
    
     /**批量删除
     * @param
     * @throws Exception
     */
    @RequestMapping(value="/deleteAll")
    @ResponseBody
    public Object deleteAll() throws Exception{
        logBefore(logger, Jurisdiction.getUsername()+"批量删除${objectName}");
        if(!Jurisdiction.buttonJurisdiction(menuUrl, "del")){return null;} //校验权限
        PageData pd = new PageData();        
        Map<String,Object> map = new HashMap<String,Object>();
        pd = this.getPageData();
        List<PageData> pdList = new ArrayList<PageData>();
        String DATA_IDS = pd.getString("DATA_IDS");
        if(null != DATA_IDS && !"".equals(DATA_IDS)){
            String ArrayDATA_IDS[] = DATA_IDS.split(",");
            ${objectNameLower}Service.deleteAll(ArrayDATA_IDS);
            pd.put("msg", "ok");
        }else{
            pd.put("msg", "no");
        }
        pdList.add(pd);
        map.put("list", pdList);
        return AppUtil.returnObject(pd, map);
    }
    
     /**导出到excel
     * @param
     * @throws Exception
     */
    @RequestMapping(value="/excel")
    public ModelAndView exportExcel() throws Exception{
        logBefore(logger, Jurisdiction.getUsername()+"导出${objectName}到excel");
        if(!Jurisdiction.buttonJurisdiction(menuUrl, "cha")){return null;}
        ModelAndView mv = new ModelAndView();
        PageData pd = new PageData();
        pd = this.getPageData();
        Map<String,Object> dataMap = new HashMap<String,Object>();
        List<String> titles = new ArrayList<String>();
<#list fieldList as var>        titles.add("${var[2]}");    //${var_index + 1}
</#list>        dataMap.put("titles", titles);
        List<PageData> varOList = ${objectNameLower}Service.listAll(pd);
        List<PageData> varList = new ArrayList<PageData>();
        for(int i=0;i<varOList.size();i++){
            PageData vpd = new PageData();
<#list fieldList as var><#if var[1] == "Integer">            vpd.put("var${var_index + 1}", varOList.get(i).get("${var[0]}").toString());    //${var_index + 1}
<#elseif var[1] == "Double">            vpd.put("var${var_index + 1}", varOList.get(i).get("${var[0]}").toString());    //${var_index + 1}
<#else>            vpd.put("var${var_index + 1}", varOList.get(i).getString("${var[0]}"));        //${var_index + 1}
</#if></#list>            varList.add(vpd);
        }
        dataMap.put("varList", varList);
        ObjectExcelView erv = new ObjectExcelView();
        mv = new ModelAndView(erv,dataMap);
        return mv;
    }
    
    @InitBinder
    public void initBinder(WebDataBinder binder){
        DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        binder.registerCustomEditor(Date.class, new CustomDateEditor(format,true));
    }
}

null
null
{}
null

root的值

{faobject=, packageName=system, fieldList=[[Ljava.lang.String;@55fbf1af, [Ljava.lang.String;@fb84443, [Ljava.lang.String;@a8992c5, [Ljava.lang.String;@4e02c8ea, [Ljava.lang.String;@18d4a2a9, [Ljava.lang.String;@300311fb], objectName=UserPhoto, nowDate=Fri Feb 09 21:25:26 CST 2018, tabletop=SYS_, objectNameUpper=USERPHOTO, objectNameLower=userphoto, TITLE=用户头像}

只不过这时候获取的模板是动态的，这时候通过

template.process(root, out);

这个方法中root 是动态的这时候root就会动态的把tempate获取的动态数据给替换掉

假如你现在还在为自己的技术担忧，假如你现在想提升自己的工资，假如你想在职场上获得更多的话语权，假如你想顺利的度过35岁这个魔咒，假如你想体验BAT的工作环境，那么现在请我们一起开启提升技术之旅吧，详情请点击http://106.12.206.16:8080/qingruihappy/index.html