vue-simple-uploader上傳成功之后的response獲取代碼
更新時間：2020年09月07日 11:14:11 作者：BennyShi98
這篇文章主要介紹了vue-simple-uploader上傳成功之后的response獲取代碼，具有很好的參考價值，希望對大家有所幫助。一起跟隨小編過來看看吧~
我就廢話不多說了，大家還是直接看代碼吧~
<template>
<uploader :options="options" :file-status-text="statusText" class="uploader-example" ref="uploader" @file-success="fileSuccess"></uploader>
</template>
<script>
export default {
data () {
return {
options: {
target: '//localhost:3000/upload', // '//jsonplaceholder.typicode.com/posts/',
testChunks: false
},
attrs: {
accept: 'image/*'
},
statusText: {
success: '成功了',
error: '出錯了',
uploading: '上傳中',
paused: '暫停中',
waiting: '等待中'
}
}
},
methods: {
//上傳成功的事件
fileSuccess (rootFile, file, message, chunk) {
console.log('complete', rootFile, file, message, chunk)
}
},
mounted () {
// 獲取uploader對象
this.$nextTick(() => {
window.uploader = this.$refs.uploader.uploader
})
}
}
</script>
補充知識：利用SpringBoot和vue-simple-uploader進行文件的分片上傳
效果【上傳Zip文件為例，可以自行擴展】
引入vue-simple-uploader
1.安裝上傳插件
npm install vue-simple-uploader --save
2.main.js全局引入上傳插件
import uploader from 'vue-simple-uploader'
Vue.use(uploader)
3.安裝md5校驗插件（保證上傳文件的完整性和一致性）
npm install spark-md5 --save
頁面
<template>
<div>
<uploader :key="uploader_key" :options="options" class="uploader-example"
:autoStart="false"
@file-success="onFileSuccess"
@file-added="filesAdded">
<uploader-unsupport></uploader-unsupport>
<uploader-drop>
<uploader-btn :single="true" :attrs="attrs">選擇Zip文件</uploader-btn>
</uploader-drop>
<uploader-list></uploader-list>
</uploader>
</div>
</template>
<script>
import SparkMD5 from 'spark-md5';
export default {
data() {
return {
uploader_key: new Date().getTime(),
options: {
target: '/chunk/chunkUpload',
testChunks: false,
},
attrs: {
accept: '.zip'
}
}
},
methods: {
onFileSuccess: function (rootFile, file, response, chunk) {
console.log(JSON.parse(response).model);
},
computeMD5(file) {
const loading = this.$loading({
lock: true,
text: '正在計算MD5',
spinner: 'el-icon-loading',
background: 'rgba(0, 0, 0, 0.7)'
});
let fileReader = new FileReader();
let time = new Date().getTime();
let blobSlice = File.prototype.slice || File.prototype.mozSlice || File.prototype.webkitSlice;
let currentChunk = 0;
const chunkSize = 10 * 1024 * 1000;
let chunks = Math.ceil(file.size / chunkSize);
let spark = new SparkMD5.ArrayBuffer();
file.pause();
loadNext();
fileReader.onload = (e => {
spark.append(e.target.result);
if (currentChunk < chunks) {
currentChunk++;
loadNext();
this.$nextTick(() => {
console.log('校驗MD5 ' + ((currentChunk / chunks) * 100).toFixed(0) + '%')
})
} else {
let md5 = spark.end();
loading.close();
this.computeMD5Success(md5, file);
console.log(`MD5計算完畢：${file.name} \nMD5：${md5} \n分片：${chunks} 大小:${file.size} 用時：${new Date().getTime() - time} ms`);
}
});
fileReader.onerror = function () {
this.error(`文件${file.name}讀取出錯，請檢查該文件`);
loading.close();
file.cancel();
};
function loadNext() {
let start = currentChunk * chunkSize;
let end = ((start + chunkSize) >= file.size) ? file.size : start + chunkSize;
fileReader.readAsArrayBuffer(blobSlice.call(file.file, start, end));
}
},
computeMD5Success(md5, file) {
file.uniqueIdentifier = md5;//把md5值作為文件的識別碼
file.resume();//開始上傳
},
filesAdded(file, event) {
//大小判斷
const isLt100M = file.size / 1024 / 1024 < 10;
if (!isLt100M) {
this.$message.error(this.$t("error.error_upload_file_max"));
} else {
this.computeMD5(file)
}
}
}
}
</script>
<style>
.uploader-example {
width: 90%;
padding: 15px;
margin: 40px auto 0;
font-size: 12px;
box-shadow: 0 0 10px rgba(0, 0, 0, .4);
}
.uploader-example .uploader-btn {
margin-right: 4px;
}
.uploader-example .uploader-list {
max-height: 440px;
overflow: auto;
overflow-x: hidden;
overflow-y: auto;
}
</style>
后臺
引入工具
<dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency>
控制類
import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
@RestController
@RequestMapping("/chunk")
public class ChunkController {
@RequestMapping("/chunkUpload")
public StdOut chunkUpload(MultipartFileParam param, HttpServletRequest request, HttpServletResponse response) {
StdOut out = new StdOut();
File file = new File("C:\\chunk_test");//存儲路徑
ChunkService chunkService = new ChunkService();
String path = file.getAbsolutePath();
response.setContentType("text/html;charset=UTF-8");
try {
//判斷前端Form表單格式是否支持文件上傳
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (!isMultipart) {
out.setCode(StdOut.PARAMETER_NULL);
out.setMessage("表單格式錯誤");
return out;
} else {
param.setTaskId(param.getIdentifier());
out.setModel(chunkService.chunkUploadByMappedByteBuffer(param, path));
return out;
}
} catch (NotSameFileExpection e) {
out.setCode(StdOut.FAIL);
out.setMessage("MD5校驗失敗");
return out;
} catch (Exception e) {
out.setCode(StdOut.FAIL);
out.setMessage("上傳失敗");
return out;
}
}
}
StdOut類（只是封裝的返回類）
public class StdOut {
public static final int SUCCESS = 200;
public static final int FAIL = 400;
public static final int PARAMETER_NULL = 500;
public static final int NO_LOGIN = 600;
private int code = 200;
private Object model = null;
private String message = null;
public StdOut() {
this.setCode(200);
this.setModel((Object)null);
}
public StdOut(int code) {
this.setCode(code);
this.setModel((Object)null);
}
public StdOut(List<Map<String, Object>> model) {
this.setCode(200);
this.setModel(model);
}
public StdOut(int code, List<Map<String, Object>> model) {
this.setCode(code);
this.setModel(model);
}
public int getCode() {
return this.code;
}
public void setCode(int code) {
this.code = code;
}
public String toString() {
return JSON.toJSONString(this);
}
public Object getModel() {
return this.model;
}
public void setModel(Object model) {
this.model = model;
}
public String getMessage() {
return this.message;
}
public void setMessage(String message) {
this.message = message;
}
}
MultipartFileParam類（文件信息類）
import org.springframework.web.multipart.MultipartFile;
public class MultipartFileParam {
private String taskId;
private int chunkNumber;
private long chunkSize;
private int totalChunks;
private String identifier;
private MultipartFile file;
public String getTaskId() {
return taskId;
}
public void setTaskId(String taskId) {
this.taskId = taskId;
}
public int getChunkNumber() {
return chunkNumber;
}
public void setChunkNumber(int chunkNumber) {
this.chunkNumber = chunkNumber;
}
public long getChunkSize() {
return chunkSize;
}
public void setChunkSize(long chunkSize) {
this.chunkSize = chunkSize;
}
public int getTotalChunks() {
return totalChunks;
}
public void setTotalChunks(int totalChunks) {
this.totalChunks = totalChunks;
}
public String getIdentifier() {
return identifier;
}
public void setIdentifier(String identifier) {
this.identifier = identifier;
}
public MultipartFile getFile() {
return file;
}
public void setFile(MultipartFile file) {
this.file = file;
}
}
ChunkService類
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.UUID;
public class ChunkService {
public String chunkUploadByMappedByteBuffer(MultipartFileParam param, String filePath) throws IOException, NotSameFileExpection {
if (param.getTaskId() == null || "".equals(param.getTaskId())) {
param.setTaskId(UUID.randomUUID().toString());
}
String fileName = param.getFile().getOriginalFilename();
String tempFileName = param.getTaskId() + fileName.substring(fileName.lastIndexOf(".")) + "_tmp";
File fileDir = new File(filePath);
if (!fileDir.exists()) {
fileDir.mkdirs();
}
File tempFile = new File(filePath, tempFileName);
//第一步 打開將要寫入的文件
RandomAccessFile raf = new RandomAccessFile(tempFile, "rw");
//第二步 打開通道
FileChannel fileChannel = raf.getChannel();
//第三步 計算偏移量
long position = (param.getChunkNumber() - 1) * param.getChunkSize();
//第四步 獲取分片數(shù)據(jù)
byte[] fileData = param.getFile().getBytes();
//第五步 寫入數(shù)據(jù)
fileChannel.position(position);
fileChannel.write(ByteBuffer.wrap(fileData));
fileChannel.force(true);
fileChannel.close();
raf.close();
//判斷是否完成文件的傳輸并進行校驗與重命名
boolean isComplete = checkUploadStatus(param, fileName, filePath);
if (isComplete) {
FileInputStream fileInputStream = new FileInputStream(tempFile.getPath());
String md5 = DigestUtils.md5Hex(fileInputStream);
fileInputStream.close();
if (StringUtils.isNotBlank(md5) && !md5.equals(param.getIdentifier())) {
throw new NotSameFileExpection();
}
renameFile(tempFile, fileName);
return fileName;
}
return null;
}
public void renameFile(File toBeRenamed, String toFileNewName) {
if (!toBeRenamed.exists() || toBeRenamed.isDirectory()) {
System.err.println("文件不存在");
return;
}
String p = toBeRenamed.getParent();
File newFile = new File(p + File.separatorChar + toFileNewName);
toBeRenamed.renameTo(newFile);
}
public boolean checkUploadStatus(MultipartFileParam param, String fileName, String filePath) throws IOException {
File confFile = new File(filePath, fileName + ".conf");
RandomAccessFile confAccessFile = new RandomAccessFile(confFile, "rw");
//設(shè)置文件長度
confAccessFile.setLength(param.getTotalChunks());
//設(shè)置起始偏移量
confAccessFile.seek(param.getChunkNumber() - 1);
//將指定的一個字節(jié)寫入文件中 127，
confAccessFile.write(Byte.MAX_VALUE);
byte[] completeStatusList = FileUtils.readFileToByteArray(confFile);
confAccessFile.close();//不關(guān)閉會造成無法占用
//創(chuàng)建conf文件文件長度為總分片數(shù)，每上傳一個分塊即向conf文件中寫入一個127，那么沒上傳的位置就是默認的0,已上傳的就是127
for (int i = 0; i < completeStatusList.length; i++) {
if (completeStatusList[i] != Byte.MAX_VALUE) {
return false;
}
}
confFile.delete();
return true;
}
}
6.NotSameFileExpection類
public class NotSameFileExpection extends Exception {
public NotSameFileExpection() {
super("File MD5 Different");
}
}
遇到問題
根據(jù)自己的實際情況進行取舍，靈活處理。
以上這篇vue-simple-uploader上傳成功之后的response獲取代碼就是小編分享給大家的全部內(nèi)容了，希望能給大家一個參考，也希望大家多多支持腳本之家。
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