commit
This commit is contained in:
540
ndplannew/src/main/java/com/system/util/FileUtil.java
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540
ndplannew/src/main/java/com/system/util/FileUtil.java
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@@ -0,0 +1,540 @@
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package com.system.util;
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import java.io.BufferedInputStream;
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import java.io.BufferedOutputStream;
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import java.io.BufferedReader;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.PrintWriter;
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import java.io.RandomAccessFile;
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import java.nio.MappedByteBuffer;
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import java.nio.channels.FileChannel;
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import java.nio.channels.FileChannel.MapMode;
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import java.util.ArrayList;
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import java.util.List;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.springframework.web.multipart.MultipartFile;
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public class FileUtil {
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/**
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* 单个文件上传
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* @param is
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* @param fileName
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* @param filePath
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*/
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public static boolean upFile(MultipartFile uploadFile,String fileName,String filePath){
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FileOutputStream fos = null;
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BufferedOutputStream bos = null;
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FileInputStream is = null;
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BufferedInputStream bis = null;
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File file = new File(filePath);
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if(!file.exists()){
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file.mkdirs();
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}
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File f = new File(filePath+"/"+fileName);
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try {
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InputStream inputStream = uploadFile.getInputStream();
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//is = new FileInputStream(uploadFile);
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bis = new BufferedInputStream(inputStream);
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fos = new FileOutputStream(f);
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bos = new BufferedOutputStream(fos);
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byte[] bt = new byte[4096];
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int len = 0;
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while((len = bis.read(bt))>0){
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bos.write(bt, 0, len);
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}
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}finally {
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try {
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if(null != bos){
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bos.close();
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bos = null;
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}
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if(null != fos){
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fos.close();
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fos= null;
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}
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if(null != is){
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is.close();
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is=null;
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}
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if (null != bis) {
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bis.close();
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bis = null;
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}
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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return true;
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}
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/**
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* 文件下载
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* @param response
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* @param downloadFile
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*/
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public static void downloadFile(HttpServletRequest request, HttpServletResponse response, String downloadFile, String fileName) {
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BufferedInputStream bis = null;
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InputStream is = null;
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OutputStream os = null;
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BufferedOutputStream bos = null;
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try {
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File file=new File(downloadFile); //文件的声明
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is = new FileInputStream(file); //文件流的声明
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os = response.getOutputStream(); //重点突出(特别注意),通过response获取的输出流，作为服务端往客户端浏览器输出内容的一个通道
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// 为了提高效率使用缓冲区流
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bis = new BufferedInputStream(is);
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bos = new BufferedOutputStream(os);
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// 处理下载文件名的乱码问题
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if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0) {
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fileName = new String(fileName.getBytes("GB2312"),"ISO-8859-1");
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} else {
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// 对文件名进行编码处理中文问题
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fileName = java.net.URLEncoder.encode(fileName, "UTF-8");// 处理中文文件名的问题
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fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 处理中文文件名的问题
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}
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response.reset(); // 重点突出
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response.setCharacterEncoding("UTF-8"); // 重点突出
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response.setContentType("application/x-msdownload");// 不同类型的文件对应不同的MIME类型 // 重点突出
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// inline在浏览器中直接显示，不提示用户下载
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// attachment弹出对话框，提示用户进行下载保存本地
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// 默认为inline方式
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response.setHeader("Content-Disposition", "attachment;filename="+ fileName);
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// response.setHeader("Content-Disposition", "attachment; filename="+fileName); // 重点突出
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int bytesRead = 0;
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byte[] buffer = new byte[1024];
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while ((bytesRead = bis.read(buffer)) != -1){ //重点
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bos.write(buffer, 0, bytesRead);// 将文件发送到客户端
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}
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} catch (Exception ex) {
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throw new RuntimeException(ex.getMessage());
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} finally {
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// 特别重要
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// 1. 进行关闭是为了释放资源
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// 2. 进行关闭会自动执行flush方法清空缓冲区内容
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try {
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if (null != bis) {
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bis.close();
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bis = null;
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}
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if (null != bos) {
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bos.close();
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bos = null;
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}
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if (null != is) {
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is.close();
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is = null;
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}
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if (null != os) {
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os.close();
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os = null;
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}
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} catch (Exception ex) {
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throw new RuntimeException(ex.getMessage());
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}
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}
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}
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/**
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* 文件下载
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* @param response
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* @param downloadFile
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*/
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public static void downloadFile(HttpServletResponse response, String downloadFile, String showFileName) {
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BufferedInputStream bis = null;
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InputStream is = null;
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OutputStream os = null;
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BufferedOutputStream bos = null;
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try {
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File file=new File(downloadFile); //:文件的声明
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String fileName=file.getName();
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is = new FileInputStream(file); //:文件流的声明
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os = response.getOutputStream(); // 重点突出
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bis = new BufferedInputStream(is);
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bos = new BufferedOutputStream(os);
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// 对文件名进行编码处理中文问题
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fileName = java.net.URLEncoder.encode(showFileName, "UTF-8");// 处理中文文件名的问题
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fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 处理中文文件名的问题
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response.reset(); // 重点突出
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response.setCharacterEncoding("UTF-8"); // 重点突出
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response.setContentType("application/x-msdownload");// 不同类型的文件对应不同的MIME类型 // 重点突出
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// inline在浏览器中直接显示，不提示用户下载
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// attachment弹出对话框，提示用户进行下载保存本地
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// 默认为inline方式
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response.setHeader("Content-Disposition", "attachment; filename="+fileName); // 重点突出
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int bytesRead = 0;
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byte[] buffer = new byte[1024];
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while ((bytesRead = bis.read(buffer)) != -1){ //重点
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bos.write(buffer, 0, bytesRead);// 将文件发送到客户端
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}
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} catch (Exception ex) {
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throw new RuntimeException(ex.getMessage());
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} finally {
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// 特别重要
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// 1. 进行关闭是为了释放资源
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// 2. 进行关闭会自动执行flush方法清空缓冲区内容
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try {
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if (null != bis) {
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bis.close();
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bis = null;
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}
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if (null != bos) {
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bos.close();
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bos = null;
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}
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if (null != is) {
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is.close();
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is = null;
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}
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if (null != os) {
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os.close();
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os = null;
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}
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} catch (Exception ex) {
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throw new RuntimeException(ex.getMessage());
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}
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}
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}
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/**
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* 文件下载
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* @param response
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* @param downloadFile
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*/
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public static void downloadPDFFile(HttpServletResponse response, String showFileName, byte[] data) {
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OutputStream os = null;
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BufferedOutputStream bos = null;
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try {
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// 对文件名进行编码处理中文问题
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/*showFileName = URLEncoder.encode(showFileName, "UTF-8");
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if (showFileName.length() > 150) {
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String guessCharset = "gb2312"; 根据request的locale 得出可能的编码，中文操作系统通常是gb2312
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showFileName = new String(showFileName.getBytes("gb2312"), "ISO8859-1");
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} */
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showFileName = new String(showFileName.getBytes("utf-8"),"iso8859-1");
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os = response.getOutputStream(); // 重点突出
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bos = new BufferedOutputStream(os);
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// 对文件名进行编码处理中文问题
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response.reset(); // 重点突出
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response.setHeader("Accept-Ranges", "bytes");
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response.setHeader("Cache-Control", "no-store");
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response.setHeader("Content-Length", data.length + "");
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response.setHeader("Content-Type", "application/pdf");
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//response.setHeader("X-Application-Context","application:8080");
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response.setCharacterEncoding("UTF-8"); // 重点突出
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//response.setContentType("application/pdf");// 不同类型的文件对应不同的MIME类型 // 重点突出
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// inline在浏览器中直接显示，不提示用户下载
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// attachment弹出对话框，提示用户进行下载保存本地
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// 默认为inline方式
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//attachment;filename= attachment;浏览器会自动下载
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//response.setHeader("Content-Disposition", "filename=9999"); // 重点突出
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bos.write(data);
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bos.flush();
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} catch (Exception ex) {
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throw new RuntimeException(ex.getMessage());
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} finally {
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try {
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if (null != bos) {
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bos.close();
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bos = null;
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}
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if (null != os) {
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os.close();
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os = null;
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}
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} catch (Exception ex) {
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throw new RuntimeException(ex.getMessage());
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}
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}
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}
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/**
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* 将文本文件转换成2进制
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* @param is
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* @param fileName
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* @param filePath
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*/
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public static byte[] convertFile2Byte(MultipartFile uploadFile){
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try {
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if(uploadFile == null){
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return null;
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}
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return uploadFile.getBytes();
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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return null;
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}
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/**
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*
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* @Title: convertFile2Base64Str
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* @Description: 将上传文件解析成base64字符串
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* @param uploadFile
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* @return
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* @return String 返回类型
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||||
* @throws
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*/
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public static String convertFile2Base64Str(MultipartFile uploadFile){
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||||
try {
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||||
return Base64Util.encode(convertFile2Byte(uploadFile));
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||||
} catch (Exception e) {
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e.printStackTrace();
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||||
}
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return null;
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}
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public static String txt2String(File file){
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StringBuilder result = new StringBuilder();
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try{
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InputStreamReader ir =new InputStreamReader(new FileInputStream(file), "utf-8");
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BufferedReader br = new BufferedReader(ir);//构造一个BufferedReader类来读取文件
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String s = null;
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while((s = br.readLine())!=null){//使用readLine方法，一次读一行
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result.append(new String(s.getBytes()));
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}
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br.close();
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}catch(Exception e){
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e.printStackTrace();
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}
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return result.toString();
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}
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public static String ReadFile(String Path){
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BufferedReader reader = null;
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String laststr = "";
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try{
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FileInputStream fileInputStream = new FileInputStream(Path);
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InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "utf-8");
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||||
reader = new BufferedReader(inputStreamReader);
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||||
String tempString = null;
|
||||
while((tempString = reader.readLine()) != null){
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||||
laststr += tempString;
|
||||
}
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||||
reader.close();
|
||||
}catch(IOException e){
|
||||
e.printStackTrace();
|
||||
}finally{
|
||||
if(reader != null){
|
||||
try {
|
||||
reader.close();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
return laststr;
|
||||
}
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||||
|
||||
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||||
public static List<String> ReadLine(String Path){
|
||||
BufferedReader reader = null;
|
||||
List<String> lines = new ArrayList<String>();
|
||||
try{
|
||||
FileInputStream fileInputStream = new FileInputStream(Path);
|
||||
InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "utf-8");
|
||||
reader = new BufferedReader(inputStreamReader);
|
||||
|
||||
String line = null;
|
||||
while((line = reader.readLine()) != null){
|
||||
lines.add(line);
|
||||
}
|
||||
reader.close();
|
||||
}catch(IOException e){
|
||||
e.printStackTrace();
|
||||
}finally{
|
||||
if(reader != null){
|
||||
try {
|
||||
reader.close();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
return lines;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @Title: toByteArray3
|
||||
* @Description: TODO
|
||||
* @param filename
|
||||
* @return
|
||||
* @throws IOException
|
||||
* @return byte[] 返回类型
|
||||
* @throws
|
||||
*/
|
||||
@SuppressWarnings("resource")
|
||||
public static byte[] file2ByteArray(String filename) throws IOException {
|
||||
|
||||
FileChannel fc = null;
|
||||
try {
|
||||
fc = new RandomAccessFile(filename, "r").getChannel();
|
||||
MappedByteBuffer byteBuffer = fc.map(MapMode.READ_ONLY, 0, fc.size()).load();
|
||||
byte[] result = new byte[(int) fc.size()];
|
||||
if (byteBuffer.remaining() > 0) {
|
||||
byteBuffer.get(result, 0, byteBuffer.remaining());
|
||||
}
|
||||
return result;
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
throw e;
|
||||
} finally {
|
||||
try {
|
||||
fc.close();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
public static byte[] getFileToByte(File file) {
|
||||
InputStream is = null;
|
||||
ByteArrayOutputStream bytestream = null;
|
||||
byte[] by = new byte[(int) file.length()];
|
||||
try {
|
||||
is = new FileInputStream(file);
|
||||
bytestream = new ByteArrayOutputStream();
|
||||
byte[] bb = new byte[2048];
|
||||
int ch;
|
||||
ch = is.read(bb);
|
||||
while (ch != -1) {
|
||||
bytestream.write(bb, 0, ch);
|
||||
ch = is.read(bb);
|
||||
}
|
||||
by = bytestream.toByteArray();
|
||||
} catch (Exception ex) {
|
||||
ex.printStackTrace();
|
||||
}finally {
|
||||
try {
|
||||
|
||||
if(is != null) is.close();
|
||||
if(bytestream != null) bytestream.close();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
return by;
|
||||
}
|
||||
|
||||
public static byte[] getFileToByte(String filename) {
|
||||
File file = new File(filename);
|
||||
if(!file.exists()) throw new RuntimeException("文件不存在");
|
||||
return getFileToByte( file);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
*
|
||||
* writeData: 将数据写入指定的文件中
|
||||
*
|
||||
* @param filePath
|
||||
* @param data
|
||||
* @return boolean 是否写入成功
|
||||
*/
|
||||
public static boolean writeData(String filePath, byte[] data){
|
||||
FileOutputStream fos = null;
|
||||
try {
|
||||
File file = new File(filePath);
|
||||
if(file.exists()){
|
||||
file.delete();
|
||||
}
|
||||
file.createNewFile();
|
||||
fos =new FileOutputStream(file);
|
||||
fos.write(data);
|
||||
fos.close();
|
||||
return true;
|
||||
} catch (Exception e) {
|
||||
return false;
|
||||
}finally{
|
||||
if(fos != null){
|
||||
try {
|
||||
fos.close();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* @param filePath
|
||||
* @param data
|
||||
* @param nextLine
|
||||
* @return boolean 是否写入成功
|
||||
*/
|
||||
public static boolean append(String filePath, String data, boolean nextLine ){
|
||||
try {
|
||||
try {
|
||||
File file = new File(filePath);
|
||||
if(!file.exists()){
|
||||
file.createNewFile();
|
||||
}
|
||||
FileOutputStream fos = new FileOutputStream(file, true);
|
||||
OutputStreamWriter osw = new OutputStreamWriter(fos, "UTF-8");
|
||||
if(nextLine) {
|
||||
data = data + System.lineSeparator();
|
||||
}
|
||||
osw.write(data);
|
||||
osw.flush();
|
||||
osw.close();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
return true;
|
||||
} catch (Exception e) {
|
||||
return false;
|
||||
}finally{
|
||||
}
|
||||
|
||||
}
|
||||
public static void main(String[] args) throws IOException {
|
||||
FileUtil.append("D:\\aa.txt", "12323",true);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user