uploadservice.java

Ntsky文件上传组件! 是别人写好了的。直接用就可以了！

                if (fileTemp.isFile()) {
                    //单个文件大小
                    intFileCount++;
                    //文件大小自加
                    lngSize = lngSize + fileTemp.length();
                }
            }
        }
        fileInfo[0] = String.valueOf(intFileCount);
        // System.out.println("总的文件大小 : " + lngSize + "----总文件数 : " +
        // fileInfo[0]);
        fileInfo[1] = String.valueOf(lngSize);
        return fileInfo;
    }    
 
    /**
     * 对文件有效性验证
     */
    private int validateFile(File file) {
        /**
         * 单个文件大小
         */
        long fileSize = fileParam.getFileSize();
        
        if (fileSize == 0) {
            return -1;
        }
        else {
            if (file.length() > fileSize * 1024)
                return 2;
        }
        /**
         * 总大小
         */
        long totalSize = fileParam.getFileTotalSize();
        if (totalSize == 0) {
            return -1;
        }
        else {
             if ((Long.valueOf(localFile()[1]).longValue() + file.length()) > totalSize * 1024)
                return 3;
        }
        return -1;
    }

    /**
     * 获取输入框里的值
     */
    public Map getInputMap() {
        return this.map;
    }

    /**
     * 往文件系统写入文件
     */
    public int readWriteFile(HttpServletRequest request)
            throws ServletException, IOException {
        setCharacterEncoding(request.getCharacterEncoding());
        
        // System.out.println("contentType = " + request.getContentType());
        setBoundary(request.getContentType());
        // System.out.println("boundary = " + boundary);
        File file = null;
        /**
         * 得到文件流
         */
        ServletInputStream servletInputStream = request.getInputStream();
        String line = "";
        /**
         * 获取字符串进行处理（直到读完为止）以行读取
         */
        
        while ((line = readLine(readByte, readCount, servletInputStream,
                CharacterEncoding)) != null) {
           //System.out.println("headLine = " + line);
            /**
             * 查找字符串中的filename[filename代表是上传的字符串]
             */
            int i = line.indexOf("filename=");
            /**
             * 获取子串 ("-1"代表没有找到)
             */
            if (i > -1) {
                String name = getName(line);
                //取得"filename="后面对应的子串
                String filename = line.substring(i + 10, line.length() - 3);
                // System.out.println("文件路径 filename = " + filename);
                filename = getFilename(filename);
                // System.out.println("得到上传文件的文件全名 : " + filename);
                if (filename != null) {
                    
                    // 判断文件个数是否正确
                     
                    //将这里的变量赋值给fileName(如果外部不想改文件名就直接用这个文件名)
                    String fileprefix = filename.substring(0, filename
                            .indexOf("."));
                    // System.out.println("文件名前缀为 : " + fileprefix);
                    String fileSuffix = filename.substring(filename
                            .indexOf(".") + 1, filename.length());
                    // System.out.println("文件名后缀文件标识为 : " + fileSuffix);
                    // 上传的文件是否被允许(文件类型)
                    if (validateFileSuffix(fileSuffix) == -1) {
                        //设置文件名(不改变情况下调用的文件名)
                        fileName = fileprefix;

                        // 判断是否更改文件名
                         
                        file = setFilePath(fileSuffix);
                        int validate = validateFile(file);
                        
                        // 文件是否达到上限
                         
                        int totalNum = fileParam.getFileNum();
                        
                        //System.out.print("validate = " + validate);
                        // System.out.println("文件总数 : "+totalNum);
                        
                        // totalNum = 0 代表没有任何限制
                        
                        if (totalNum == 0) {
                            writeFile(file, servletInputStream,
                                    CharacterEncoding);
                            setInputContent(name, buildFilePath);
                            if (validate != -1) {
                                file.delete();
                                return validate;
                            }
                        }
                        else {
                            if (totalNum > Integer
                                    .parseInt(localFile()[0])-1) {
                                //验证文件有效性
                                writeFile(file, servletInputStream,
                                        CharacterEncoding);
                                setInputContent(name, buildFilePath);
                                if (validate != -1) {
                                    file.delete();
                                    return validate;
                                }
                            }
                            else {
                                file.delete();
                                return 4;
                            }
                        }
                        /**
                         *图缩放处理
                         */
                        if(fileParam.isPic()){ 
                            JPEGHandle jpegHandle = new JPEGHandle(file,fileParam.getJpeg(),contextPath);
                            jpegHandle.encoderPic(); 
                        }                        
                    }
                    else {
                        return 1;
                    }
                }
            }
            /**
             * 处理非文件的内容
             */
            int j = line.indexOf("name=\"");
            if (j > 0 && i < 0) {
                String inputName = line.substring(j + 6, line.length() - 3);
                //System.out.println("inputName = " + inputName);
                String inputContent = "";
                //读过一空行
                line = readLine(readByte, readCount, servletInputStream,
                        CharacterEncoding);
                while ((line = readLine(readByte, readCount,
                        servletInputStream, CharacterEncoding)).indexOf(boundary) < 0) {
                    //去结尾部分的/r/n符号（回车换行符)
                    inputContent = line.substring(0, line.length() - 2);
                    //System.out.println("inputContent = " + inputContent);
                }
                setInputContent(inputName, inputContent);
            }
        }
        return -1;
    }

    /**
     * 输入名和输入的值
     */
    private void setInputContent(String inputName, String inputContent) {
        Input inputField = new Input();
        inputField.setInputName(inputName);
        inputField.setInputContent(inputContent);
        map.put(inputName,inputContent);
    }

    private void writeFile(File file, ServletInputStream servletInputStream,String CharacterEncoding) throws ServletException, IOException {
        String line = null;
        FileOutputStream fileOutputStream = new FileOutputStream(file);
        //读入下一行,该行为写入内容类型行
        String lineContent = readLine(readByte, readCount, servletInputStream,
                CharacterEncoding);
        /**
         * 读入文件类型Content-Type
         */
        // 表明读入的是个文件
        if (lineContent.indexOf("Content-Type") >= 0) {
            // 读入一个空行
            readLine(readByte, readCount, servletInputStream, CharacterEncoding);
        } 
        //循环从输入流读入并写入文件 readCount[0]为实际写入的字符数
        while ((lineContent = readLine(readByte, readCount,
                    servletInputStream, CharacterEncoding)) != null) {
            
            // System.out.println("lineContent2 = " + lineContent + "---- readByte[0] = " + readByte[0]);
            // 如果该行包含boundary标志,就跳出循环
            if (lineContent.indexOf(boundary) == 0 && readByte[0] == 45) {
                break;
            }
            if(line != null){ 
                fileOutputStream.write(writeByte, 0, writeCount[0]); 
                fileOutputStream.flush(); 
            } 
            // System.out.println("line = " + line + " writeByte[0] " + writeByte[0]);
            //readCount[0]为实际读入的字符数
            line = readLine(writeByte, writeCount, servletInputStream, CharacterEncoding); 
            // 最后一行就跳出让下面的处理
            if(line == null || line.indexOf(boundary) != -1 && writeByte[0] == 45) 
                break; 
            fileOutputStream.write(readByte, 0, readCount[0]); 
            fileOutputStream.flush(); 
        } 
	
        //对最后一行进行处理
        if(line != null && writeByte[0] != 45 && writeCount[0] > 2) {
            fileOutputStream.write(writeByte, 0, writeCount[0] - 2); 
        }
        if(lineContent != null && readByte[0] != 45 && readCount[0] > 2){
           	fileOutputStream.write(readByte, 0, readCount[0] - 2);
        }
  
    	fileOutputStream.close(); 
    }
 

    /**
     * --------------参考字符 reqeustmultipart/form-data;
     * boundary=---------------------------7d42fa316058e
     * 44-----------------------------7d42fa316058e Content-Disposition:
     * form-data; name="userPhoto"; filename="C:\Documents and
     * Settings\sky\Desktop\111.txt" Content-Type: text/plain
     * 
     * HELLO! -----------------------------7d42fa316058e Content-Disposition:
     * form-data; name="photoInfo"
     * 
     * abc -----------------------------7d42fa316058e--
     */
}