spring mvc 导出 spring mvc gzip

1、环境准备
springMvc在实现文件上传时需引入以下两个架包

import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.MultipartFile;

2、配置文件
引入了架包后还需在springMvc的配置文件中加入以下配置

<bean id="multipartResolver"class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <！-1024 * 200即200k->  
        <property name="maxUploadSize" value="102400000"></property>
    </bean>

3、代码示例
3.1、前段JS代码

function UUploadedFile() {
        var caseOid = $("#caseOid").val(); //后台可发送的参数
        var formData = new FormData();
        formData.append('file', $('#UUploadedFile')[0].files[0]);
        formData.append('caseFileRecOid', caseFileRecOid);//携带参数发送
        $.ajax({
            async: false,//要求同步 不是不需看你的需求
            url : "material/uplodFileU.do",
            type : 'POST',
            data : formData,
            dataType: "json",
            processData : false,  //必须false才会避开jQuery对 formdata 的默认处理   
            contentType : false,  //必须false才会自动加上正确的Content-Type
            success: function (data) {
                if (data.success ) {
                    Dialog.alert(data.data);
                }else{
                    Dialog.alert(data.data);
                }
                },
        });
    }

3.2、Java后台代码

/**
     * 初始化U盘上传
     *
     * @param
     * @return
     * @author admin
     * 
     */
    @RequestMapping(value = "/uplodFileU.do")
    @ResponseBody
    public Map<String, Object> uploadFile(HttpServletRequest request){
        TerminalLoggerUtil.info("U盘上传视频材料");
        Map<String, Object> modelMap=new HashMap<String, Object>();
        try {
            MultipartHttpServletRequest mpRequest = (MultipartHttpServletRequest) request;
            MultipartFile file = mpRequest.getFile("file");
            long fileSize = file.getSize();
            if (fileSize <= 0) {
                modelMap.put(SUCCESS, false);
                modelMap.put(MESSAGE, "上传失败！上传的文件为空！");
                return modelMap;
            }
            /*设置上传文件大小不能超过200M*/
            if (fileSize > 200 * 1024 * 1024) {
                modelMap.put(SUCCESS, false);
                modelMap.put(MESSAGE, "上传失败！上传的文件大小超出了限制！");
                return modelMap;
            }
            InputStream in = file.getInputStream();
            OutputStream out = new FileOutputStream("D:/"+file.getOriginalFilename());
            byte[] buffer = new byte[1024];
            int length;
            while ((length = in.read(buffer)) > 0) {
                out.write(buffer, 0, length);
            }
            String path2="D:/"+file.getOriginalFilename();
            File outFile=new File(path2);
            UFileUpload.compress(path2, "D:/", file.getOriginalFilename());
            String[] sourceStrArray = file.getOriginalFilename().split("\\.");
            String outPath="D:/"+sourceStrArray[0]+".zip";
            File outFileZip=new File(outPath);
            InputStream is = new FileInputStream(outPath);
            String ret = HttpConnectionUtil.uploadFile("要保存到的文件地址", "test.zip", null, is);
            JSONObject data = (JSONObject) JSONObject.parse(ret);
            String struct=data.getString("message");
            in.close();
            out.close();
            outFileZip.delete();
            outFile.delete();
        } catch (FileNotFoundException e) {
            TerminalLoggerUtil.error("文件不存在！", e);
            modelMap.put(SUCCESS, false);
            modelMap.put(MESSAGE, "文件不存在！");
        }  catch (IOException e) {
            modelMap.put(SUCCESS, false);
            modelMap.put(MESSAGE, "压缩失败！！");
            TerminalLoggerUtil.error("压缩失败！", e);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return modelMap;
    }

3.3、测试用例

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
 * ZipUtils
 * @author  admin
 */
public class TestTwo {

    private static final int  BUFFER_SIZE = 2 * 1024;
        /**
         * 压缩成ZIP 方法1
         * @param srcDir 压缩文件夹路径
         * @param out    压缩文件输出流
         * @param KeepDirStructure  是否保留原来的目录结构,true:保留目录结构;
         * false:所有文件跑到压缩包根目录下(注意：不保留目录结构可能会出现同名文件,会压缩失败)
         * @throws RuntimeException 压缩失败会抛出运行时异常
         */
    public static void toZip(String srcDir, OutputStream out, boolean KeepDirStructure)
        throws RuntimeException{
        long start = System.currentTimeMillis();
        ZipOutputStream zos = null ;
        try {
            zos = new ZipOutputStream(out);
            File sourceFile = new File(srcDir);
            compress(sourceFile,zos,sourceFile.getName(),KeepDirStructure);
            long end = System.currentTimeMillis();
            System.out.println("压缩完成，耗时：" + (end - start) +" ms");
        } catch (Exception e) {
            throw new RuntimeException("失败",e);
        }finally{
            if(zos != null){
                try {
                    zos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }

        /**
         * 压缩成ZIP 方法2
         * @param srcFiles 需要压缩的文件列表
         * @param out           压缩文件输出流
         * @throws RuntimeException 压缩失败会抛出运行时异常
         */
    public static void toZip(List<File> srcFiles , OutputStream out)throws RuntimeException {
        long start = System.currentTimeMillis();
        ZipOutputStream zos = null ;
        try {
            zos = new ZipOutputStream(out);
            for (File srcFile : srcFiles) {
                byte[] buf = new byte[BUFFER_SIZE];
                zos.putNextEntry(new ZipEntry(srcFile.getName()));
                int len;
                FileInputStream in = new FileInputStream(srcFile);
                while ((len = in.read(buf)) != -1){
                    zos.write(buf, 0, len);
                }
                zos.closeEntry();
                in.close();
            }
            long end = System.currentTimeMillis();
            System.out.println("压缩完成，耗时：" + (end - start) +" ms");
        } catch (Exception e) {
            throw new RuntimeException("zip error from ZipUtils",e);
        }finally{
            if(zos != null){
                try {
                    zos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
        /**
         * 递归压缩方法
         * @param sourceFile 源文件
         * @param zos        zip输出流
         * @param name       压缩后的名称
         * @param KeepDirStructure  是否保留原来的目录结构,true:保留目录结构;
         * @throws Exception
         */
    private static void compress(File sourceFile, ZipOutputStream zos, String name,
                                 boolean KeepDirStructure) throws Exception{
        byte[] buf = new byte[BUFFER_SIZE];
        if(sourceFile.isFile()){
            // 向zip输出流中添加一个zip实体，构造器中name为zip实体的文件的名字
            zos.putNextEntry(new ZipEntry(name));
            // copy文件到zip输出流中
            int len;
            FileInputStream in = new FileInputStream(sourceFile);
            while ((len = in.read(buf)) != -1){
                zos.write(buf, 0, len);
            }
            // Complete the entry
            zos.closeEntry();
            in.close();
        } else {
            File[] listFiles = sourceFile.listFiles();
            if(listFiles == null || listFiles.length == 0){
                // 需要保留原来的文件结构时,需要对空文件夹进行处理
                if(KeepDirStructure){
                    // 空文件夹的处理
                    zos.putNextEntry(new ZipEntry(name + "/"));
                    // 没有文件，不需要文件的copy
                    zos.closeEntry();
                }

            }else {
                for (File file : listFiles) {
                    // 判断是否需要保留原来的文件结构
                    if (KeepDirStructure) {
                        // 注意：file.getName()前面需要带上父文件夹的名字加一斜杠,
                        // 不然最后压缩包中就不能保留原来的文件结构,即：所有文件都跑到压缩包根目录下了
                        compress(file, zos, name + "/" + file.getName(),KeepDirStructure);
                    } else {
                        compress(file, zos, file.getName(),KeepDirStructure);
                    }
                }
            }
        }
    }
    public static void main(String[] args) throws Exception {
        /* “D:/测试压缩版.zip”是压缩成功后的压缩文件名称，可随意命名*/
        FileOutputStream fos1 = new FileOutputStream(new File("D:/测试压缩版.zip")); 
         /* “D:/测试压缩版.txt”是将要进行压缩的文件*/
        TestTwo.toZip("D:/测试压缩版.txt", fos1,true);
        /** 测试压缩方法2  */
        List<File> fileList = new ArrayList<>();
        fileList.add(new File("D:/测试压缩版.txt"));
        fileList.add(new File("D:/测试压缩版.txt"));
        FileOutputStream fos2 = new FileOutputStream(new File("D:/测试压缩版.zip"));
        TestTwo.toZip(fileList, fos2);
    }
}