springboot下载doc文档

1、先找个一个doc的文件，另存为一份xml格式的文件，把名字改成fit文件放到resources目录结构下面

 

 2、修改pom文件，不然打包无法将resources目录下面的ftl文件打包进去

 3、配置一个javaBean

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;

import java.util.HashMap;
import java.util.Map;

/**
 * @Auther: lyl
 * @Date: 2020/12/5 10:41
 * @Description:
 */
@Configuration
public class ApplicationConfig {
    @Bean(name = "freeMarkerConfigurer")
    public FreeMarkerConfigurer freeMarkerConfigurer() {
        FreeMarkerConfigurer configurer = new FreeMarkerConfigurer();
        configurer.setDefaultEncoding("UTF-8");
        configurer.setTemplateLoaderPath("classpath:/templates");
        Map<String, Object> variables = new HashMap<>(1<<1);
        variables.put("xml_escape","fmXmlEscape");
        configurer.setFreemarkerVariables(variables);
        return configurer;
    }
}

4、注入这个bean，然后获取模板文件

@Autowired
    private FreeMarkerConfigurer freeMarkerConfigurer;

public void findByIdSelectDownload(Long id, HttpServletResponse response) {
        CaseDTO byIdSelect = this.findByIdSelect(id);
        Map<String, Object> dataMap = new HashMap<>();
        this.getData(dataMap,byIdSelect);
        // 创建configuration对象,得到模板文件保存的目录
        Configuration configuration = freeMarkerConfigurer.getConfiguration();
        // 加载一个模板文件，创建一个模板对象
        Locale locale = new Locale("zh");
        Template t=null;
        try {
            t = configuration.getTemplate("case.ftl",locale,"UTF-8"); //获取模板文件
        } catch (IOException e) {
            e.printStackTrace();
        }
        Writer out = null;
        try {
            response.setContentType("multipart/form-data;charset=utf-8");
            response.setHeader("Content-disposition", "attachment; filename=" + dataMap.get("caseId")+".doc");
            response.addHeader("Content-type", "application/octet-stream");
            out = response.getWriter();
            t.process(dataMap, out); //将填充数据填入模板文件并输出到目标文件
        } catch (TemplateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if(out != null) {
                    out.close();
                }
//                if(outFile != null) {
//                    outFile.delete();
//                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

 注意：这边循环下载图片遇到的bug

<#list images as im>

      < w:pict >

       < v:shapetype  id = "_x0000_t75"  coordsize = "21600,21600"  o:spt = "75"  o:preferrelative = "t"  path = "m@4@5l@4@11@9@11@9@5xe"  filled = "f"  stroked = "f" >

        < v:stroke  joinstyle = "miter" />

        < v:formulas >

         < v:f  eqn = "if lineDrawn pixelLineWidth 0" />

         < v:f  eqn = "sum @0 1 0" />

         < v:f  eqn = "sum 0 0 @1" />

         < v:f  eqn = "prod @2 1 2" />

         < v:f  eqn = "prod @3 21600 pixelWidth" />

         < v:f  eqn = "prod @3 21600 pixelHeight" />

         < v:f  eqn = "sum @0 0 1" />

         < v:f  eqn = "prod @6 1 2" />

         < v:f  eqn = "prod @7 21600 pixelWidth" />

         < v:f  eqn = "sum @8 21600 0" />

         < v:f  eqn = "prod @7 21600 pixelHeight" />

         < v:f  eqn = "sum @10 21600 0" />

        </ v:formulas >

        < v:path  o:extrusionok = "f"  gradientshapeok = "t"  o:connecttype = "rect" />

        < o:lock  v:ext = "edit"  aspectratio = "t" />

       </ v:shapetype >

       < w:binData  w:name="${" wordml://0200000"+im_index+1+".jpg"}"  xml:space = "preserve" >${im}</ w:binData >

       < v:shape  id = "图片"  o:spid = "_x0000_i1025"  type = "#_x0000_t75"  style = "414.75pt;height:207.75pt;visibility:visible;mso-wrap-style:square" >

        <v:imagedata src="${" wordml://0200000"+im_index+1+".jpg"}"  o:title = "菜单" />

       </ v:shape >

      </ w:pict >

      </#list>