1.前端代码-HTML

2.前端代码-JS/*选择文件*/

getFile:function(event){

var file = event.target.files;

for(var i = 0;i

//上传类型判断

var imgName = file[i].name;

var idx = imgName.lastIndexOf(".");

if (idx != -1){

var ext = imgName.substr(idx+1).toUpperCase();

ext = ext.toLowerCase( );

if (ext!='pdf' && ext!='doc' && ext!='docx' && ext!='txt'){

}else{

this.addArr.push(file[i]);

}

}else{

}

}

},

/*开始上传*/

submitAddFile:function(){

if(0 == this.addArr.length){

layer.msg("请选择文件", {icon: 1});

return;

}

var formData = new FormData();

for(var i=0;i

formData.append('file',this.addArr[i]);

}

const vm = this

$.ajax({

type: "POST",

url: baseURL + "air/crackCalculateController/upload",

contentType:false,

processData:false,

data: formData,

success: function(r){

if(r.code == 0){

layer.msg("操作成功", {icon: 1});

vm.loadxy = r.ret

}else{

layer.alert(r.msg);

}

}

});

}

3.后台代码-Controller@PostMapping("/upload")

@RequiresPermissions("air:crackCalculate:save")

public R upload(@RequestParam("file") MultipartFile file) throws IOException {

if (file.isEmpty()) {

return R.ok().put("ret", "上传失败，请选择文件");

}

String fileName = file.getOriginalFilename();

String lastStr = fileName.substring(fileName.lastIndexOf("."));

String result = "";

if (".txt".equals(lastStr)) {

//10,100,1000/n20,200,2000/n30,300,3000/n

result = FileToString.convertStreamToString(file.getInputStream());

} else if ("doc".equals(lastStr)){

String prefix = fileName.substring(fileName.lastIndexOf("."));

File filef = null;

try {

filef = File.createTempFile(fileName, prefix);

file.transferTo(filef);

result = FileToString.convertDocToString(filef);

} catch (Exception e) {

e.printStackTrace();

} finally {

// 操作完上面的文件 需要删除在根目录下生成的临时文件

File f = new File(filef.toURI());

f.delete();

}

} else if (".docx".equals(lastStr)){

String prefix = fileName.substring(fileName.lastIndexOf("."));

File filef = null;

try {

filef = File.createTempFile(fileName, prefix);

file.transferTo(filef);

result = FileToString.convertDocxToString(filef);

} catch (Exception e) {

e.printStackTrace();

} finally {

// 操作完上面的文件 需要删除在根目录下生成的临时文件

File f = new File(filef.toURI());

f.delete();

}

}

return R.ok().put("ret", result);

}

}