SpringMVC使用FileUpload進行文件上傳

導入FileUpload和common-io的Jar包

注意：1、Struts2需要使用其他方法：struts2過濾時，會改變reqeust的類型，由HttpServletRequest變成MultiPartRequestWrapper

1、Test.jsp:

<form action="<%=basePath%>self/testFileUpload.do" method="post" enctype="multipart/form-data">
        <input type="text" name="num">
        <input name="img1" type="file" accept="image/gif,image/jpg,image/png,image/jpeg"/>
        <input name="img2" type="file" accept="image/gif,image/jpg,image/png,image/jpeg"/>
        <input type="submit" name="test">
        <input type="reset" name="test1">
    </form>

2、controller:

@RequestMapping(value="/testFileUpload")
    public void  testFileUpload(HttpServletRequest request,HttpServletResponse response) throws Exception{
        String num = "";
        String img1 = "";
        String img2 = "";
        String fileName = "";
        try {
            String t = request.getCharacterEncoding();
            boolean isMultipart = ServletFileUpload.isMultipartContent(request);//判斷是否是表單文件類型
            if(isMultipart){
                DiskFileItemFactory factory = new DiskFileItemFactory();
                ServletFileUpload upload = new ServletFileUpload(factory);
                upload.setHeaderEncoding(request.getCharacterEncoding());//這裏很重要啊 解決linux環境下上傳文件名亂碼的問題
                //upload.setFileSizeMax(3*1024*1024);//3M
                List items = upload.parseRequest(request);
                if(items.size() == 0){
                    System.out.println("無數據");
                }
                Iterator<Object> formItem = items.iterator();
                while(formItem.hasNext()){
                    FileItem item = (FileItem) formItem.next();
                    //如果是表單元素
                    if(item.isFormField()){
                        if (item.getFieldName().equals("num")) {
                            num = item.getString(request.getCharacterEncoding()).trim();
                        }
                    }
                    //如果不是表單元素
                    if(!item.isFormField()){
                        String name = item.getName();
                        String type = item.getContentType();
                        long sizeInBytes = item.getSize();

                        try {
                            String fullName = item.getName().trim();
                            if(fullName != ""){
                                fileName = System.currentTimeMillis() + fullName.substring(fullName.indexOf("."));
                                if(item.getFieldName().equals("img1")){
                                    fileName = "img1-" + System.currentTimeMillis() + fullName.substring(fullName.indexOf("."));
                                }
                                if(item.getFieldName().equals("img2")){
                                    fileName = "img2-" + System.currentTimeMillis() + fullName.substring(fullName.indexOf("."));
                                }
                                String tomcatRoot = FileOperator.getRootPath();
                                String path = tomcatRoot;
                                if(FileOperator.FileUploadEx(path, fileName, item.getSize(), item.getInputStream())){
                                    if(item.getFieldName().equals("img1")){
                                        System.out.println("testimg1");
                                    }
                                    if(item.getFieldName().equals("img2")){
                                        System.out.println("testimg2");
                                    }
                                }
                            }

                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                }
            }else{
                System.out.println("非multipart/form-data提交方式");
            }


        } catch (Exception e) {
            e.printStackTrace();
        }
    }