java打包下载多个文件_java将多个文件打包成zip

java打包下载多个word

1.jar包

<dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-compress</artifactId>
      <version>1.14</version>
    </dependency>
    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.9</version>
    </dependency>
    <dependency>
      <groupId>org.freemarker</groupId>
      <artifactId>freemarker</artifactId>
      <version>2.3.23</version>
    </dependency>

2.工具类


import freemarker.template.Configuration;
import freemarker.template.Template;
import org.apache.commons.compress.archivers.ArchiveEntry;
import org.apache.commons.compress.archivers.zip.Zip64Mode;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
import sun.misc.BASE64Encoder;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.Map;

public class WordUtil { 
   

    private Configuration configuration;
    private String encoding;

    public WordUtil(String encoding) { 
   
        this.encoding = encoding;
        configuration = new Configuration(Configuration.VERSION_2_3_22);
        configuration.setDefaultEncoding(encoding);

        //configuration.setClassForTemplateLoading(this.getClass(), "/templates/");
        try { 
   
            //configuration.setDirectoryForTemplateLoading(new File("G:\\ideaWorkspace\\zwxtzhzx\\src\\main\\java\\com\\sx\\common\\wordexp\\templates"));
            //请将模板文件放在resource文件夹下的templates文件夹中
            configuration.setDirectoryForTemplateLoading(new File(this.getClass().getResource("/").getPath() + "templates"));
        } catch (IOException e) { 
   
            e.printStackTrace();
        }
    }


    public Template getTemplate(String name) throws Exception { 
   
        return configuration.getTemplate(name);

    }

    public String getImageStr(String image) throws IOException { 
   
        InputStream is = new FileInputStream(image);
        BASE64Encoder encoder = new BASE64Encoder();
        byte[] data = new byte[is.available()];
        is.read(data); is.close();
        return encoder.encode(data);
    }

    /** * 对文件流输出下载的中文文件名进行编码 屏蔽各种浏览器版本的差异性 * @param request * @param pFileName * @return * @throws UnsupportedEncodingException */

    public static String encodeChineseDownloadFileName(
            HttpServletRequest request, String pFileName) throws Exception { 
   

        String filename = null;
        String agent = request.getHeader("USER-AGENT");
        if (null != agent){ 
   
            if (-1 != agent.indexOf("Firefox")) { 
   //Firefox
                filename = "=?UTF-8?B?" + (new String(org.apache.commons.codec.binary.Base64.encodeBase64(pFileName.getBytes("UTF-8"))))+ "?=";
            }else if (-1 != agent.indexOf("Chrome")) { 
   //Chrome
                filename = new String(pFileName.getBytes(), "ISO8859-1");
            } else { 
   //IE7+
                filename = java.net.URLEncoder.encode(pFileName, "UTF-8");
                filename = filename.replace("+", "%20");
            }
        } else { 
   
            filename = pFileName;
        }
        return filename;
    }

    /** * 通过模板获取word流 * @param modelName 模板文件名（包含后缀ftl） * @param dataMap 数据Map */
    public ByteArrayOutputStream wordBaos(String modelName, Map dataMap){ 
   
        ByteArrayOutputStream byteOut = null;
        Writer writer = null;
        try { 
   
            byteOut = new ByteArrayOutputStream();
            Template template = this.getTemplate(modelName);
            writer = new OutputStreamWriter(byteOut, "UTF-8");
            template.process(dataMap, writer);
            return byteOut;
        } catch (Exception e) { 
   
            e.printStackTrace();
        } finally { 
   
            if(writer != null){ 
   
                try { 
   
                    writer.close();
                } catch (IOException e) { 
   
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

    /** * 将多个文件流合并到压缩包下载 * @param baoss 字节输出流数组 * @param fileNames 文件名数组 * @param response HttpServletResponse */
    public void downLoadZip(ByteArrayOutputStream[] baoss, String[] fileNames, String zipName, HttpServletRequest request, HttpServletResponse response){ 
   
        //压缩包输出流
        ZipArchiveOutputStream zous = null;
        try { 
   
            zous = new ZipArchiveOutputStream(response.getOutputStream());
            zous.setUseZip64(Zip64Mode.AsNeeded);
            //response.setContentType("application/octet-stream");
            //编码文件名并加上后缀(压缩包内部文件名不需要编码)
            String filename = encodeChineseDownloadFileName(request, zipName) + ".zip";
            response.setHeader("Content-disposition", "attachment; filename=" + filename);
            for(int i = 0; i < baoss.length; i++){ 
   
                ByteArrayOutputStream baos = baoss[i];
                //给文件名
                String fileName = fileNames[i];
                //下面三行是吧excel的文件以流的形式转为byte[]
                byte[] bytes = baos.toByteArray();
                ArchiveEntry entry = new ZipArchiveEntry(fileName);
                zous.putArchiveEntry(entry);
                zous.write(bytes);
                zous.closeArchiveEntry();
                if (baos != null) { 
   
                    baos.close();
                }
            }
        } catch (IOException e) { 
   
            e.printStackTrace();
        } catch (Exception e) { 
   
            e.printStackTrace();
        } finally { 
   
            try { 
   
                if(zous != null){ 
   
                    zous.flush();
                    zous.close();
                }
            } catch (IOException e) { 
   
                e.printStackTrace();
            }
        }
    }
}

3.制作导出word模板，然后另存为xml。

放到resources》templates下（必须是），修改后缀为ftl。

4.测试

   function wordPro() { 
   
        $("#form1").attr("action","<%=basePath%>stu/wordPro");
        $("#form1").submit();
    }

 @RequestMapping("/wordPro")
    public void wordPro(HttpServletRequest request, HttpServletResponse response){ 
   
        try{ 
   
            WordUtil maker = new WordUtil("UTF-8");
            String zipName = "压缩包名";
            ByteArrayOutputStream[] baoss= new ByteArrayOutputStream[2];
            String[] str = new String[2];
            str[0]="word1--文件名1.doc";//后缀一定加
            str[1]="word2--文件名2.doc";
            Map<String, Object> data1 = new HashMap<String, Object>();
            Map<String, Object> data2 = new HashMap<String, Object>();

            Stu stu1=new Stu();
            stu1.setStuName("小明");
            stu1.setStuSex("男");
            stu1.setStuMz("汉族");
            stu1.setStuGj("中国--1");
            stu1.setStuPhone("110110");
            Stu stu2=new Stu();
            stu2.setStuName("小花");
            stu2.setStuSex("女");
            stu2.setStuMz("维吾尔族");
            stu2.setStuGj("中国--2");
            stu2.setStuPhone("110110");

            data1.put("vbs",stu1);
            data2.put("vbs",stu2);

            baoss[0] = maker.wordBaos("word.ftl", data1);
            baoss[1] = maker.wordBaos("word.ftl", data2);

            maker.downLoadZip(baoss,str, zipName, request, response);
        }catch (Exception e){ 
   
            e.printStackTrace();
        }
    }