Springboot中使用freemarker动态生成word文档

freemarker模板动态生成word文档

前言

使用freemarker模板动态导出word文件

准备

• 环境

  • IntellJ IDEA 2018.2
  • SringBoot 2.1.9

• 版本

  • Word 2003 .doc 格式
  • spring-boot-starter-freemarker 2.1.9

简单模板准备

<一> word 2003 新建.doc 模板

<二> 另存为.xml 文件，格式化代码，并检查是否存在变量分离问题，如图

调整后

<三> 重命名为.ftl模板freemarker文件

Springboot导出简单word

使用freemarker模板引擎

  		<dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-freemarkerartifactId>
        dependency>

配置freemarker

  #    设置freemarker
  freemarker:
    allow-request-override: false
    #    开发过程建议关闭缓存
    cache: true
    check-template-location: false
    charset: UTF-8
    content-type: text/html; charset=utf-8
    expose-request-attributes: false
    expose-session-attributes: false
    expose-spring-macro-helpers: false
    request-context-attribute:
    # 默认后缀就是.ftl
    suffix: .ftl
    template-loader-path: classPath:/templates/code/    

将模板UserInfo.flt文件放入项目

测试Controller代码

    @PostMapping("user/doc")
    @ResponseBody
    @ApiOperation(value="导出用户doc", httpMethod = "POST",produces="application/json",notes = "导出用户doc")
    public ResultBean exportDoc() throws  IOException{
        Configuration configuration = new Configuration();
        configuration.setDefaultEncoding("utf-8");
        configuration.setClassForTemplateLoading(this.getClass(), "/templates/code");
        Template template = configuration.getTemplate("UserInfo.ftl");
        Map<String, Object> dataMap = new HashMap<>();
        dataMap.put("name","gaolei");
        dataMap.put("id","02201");
        dataMap.put("code","251525v");
        dataMap.put("pwd","root");
        dataMap.put("tel","08583552");
        File outFile = new File("UserInfoTest.doc");
        Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile),"UTF-8"));
        try {
            template.process(dataMap,out);
            out.flush();
            out.close();
        } catch (TemplateException e) {
            e.printStackTrace();
        }
        return ResultBean.success();
    }

Swagger测试

默认保存在项目根目录

数据成功导出得到word

复杂模板word导出

模板准备

操作同上，模板如下

Controller测试

	@PostMapping("user/requireInfo")
    @ResponseBody
    @ApiOperation(value="导出用户确认信息表doc", httpMethod = "POST",produces="application/json",notes = "导出用户确认信息表doc")
    public ResultBean  userRequireInfo() throws  IOException{
        Configuration configuration = new Configuration();
        configuration.setDefaultEncoding("utf-8");
        configuration.setClassForTemplateLoading(this.getClass(), "/templates/code");
        Template template = configuration.getTemplate("need.ftl");
        Map<String , Object> resultMap = new HashMap<>();
        List<UserInfo> userInfoList = new ArrayList<>();
        userInfoList.add(new UserInfo("2019","安全环保处质量安全科2608室","风险研判","9:30","10:30","风险研判","风险研判原型设计","参照甘肃分公司提交的分析研判表，各个二级单位维护自己的风险研判信息，需要一个简单的风险上报流程，各个二级单位可以看到所有的分析研判信息作为一个知识成果共享。","张三","李四"));
        resultMap.put("userInfoList",userInfoList);
        File outFile = new File("userRequireInfo.doc");
        Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile),"UTF-8"));
        try {
            template.process(resultMap,out);
            out.flush();
            out.close();
            return null;
        } catch (TemplateException e) {
            e.printStackTrace();
        }
        return ResultBean.success();
    }

freemarker 遍历

	<#list userInfoList as user>
			获取值：${user.name} 
        	...
    #list>

导出效果

导出带图片Word

模板准备

Controller

 @PostMapping("user/exportPic")
    @ResponseBody
    @ApiOperation(value="导出带图片的Word", httpMethod = "POST",produces="application/json",notes = "导出带图片的Word")
    public ResultBean exportPic() throws IOException {
        Configuration configuration = new Configuration();
        configuration.setDefaultEncoding("utf-8");
        configuration.setClassForTemplateLoading(this.getClass(), "/templates/code");
        Template template = configuration.getTemplate("userPic.ftl");
        Map<String,Object> map = new HashMap<>();
        map.put("name","gaolei");
        map.put("date","2015-10-12");
        map.put("imgCode",imageToString());
        File outFile = new File("userWithPicture.doc");
        Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile),"UTF-8"));
        try {
            template.process(map,out);
            out.flush();
            out.close();
            return null;
        } catch (TemplateException e) {
            e.printStackTrace();
        }
        return  ResultBean.success();
    }

    public static String imageToString() {
        String imgFile = "E:\\gitee\\excel-poi\\src\\main\\resources\\static\\img\\a.png";
        InputStream in = null;
        byte[] data = null;
        try {
            in = new FileInputStream(imgFile);
            data = new byte[in.available()];
            in.read(data);
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        String imageCodeBase64 =  Base64Utils.encodeToString(data);

        return imageCodeBase64;
    }

Swagger测试

导出效果

demo源码

详情见github 仓库