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huangzhuanghua
284
app/src/main/java/com/gh/common/util/FileUtils.java
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284
app/src/main/java/com/gh/common/util/FileUtils.java
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package com.gh.common.util;
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import java.io.DataInputStream;
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import java.io.DataOutputStream;
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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.IOException;
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import java.io.InputStream;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.util.UUID;
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import org.apache.http.HttpStatus;
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import org.json.JSONObject;
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import android.content.Context;
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import android.os.Environment;
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import android.os.StatFs;
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import android.os.StrictMode;
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/**
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*
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* @author guanchao wen
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* @email shuwoom.wgc@gmail.com
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* @modify hzh 2016/03/16
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* @update 2015-7-29下午2:26:02
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*/
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public class FileUtils {
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public static String getDownloadDir(Context context) {
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String baseDir;
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if (isMounted()) {
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baseDir = Environment.getExternalStorageDirectory().getAbsolutePath();
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} else {
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baseDir = context.getFilesDir().getAbsolutePath();
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}
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String dir = baseDir + File.separator + "gh-download";
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return checkDir(dir);
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}
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public static String getDownloadPath(Context context, String name) {
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return getDownloadDir(context) + File.separator + name;
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}
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public static String getLogPath(Context context, String name) {
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return checkDir(getDir(context, "log")) + File.separator + name;
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}
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public static String getPlatformPicDir(Context context) {
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return checkDir(getDir(context, "PlatformPic"));
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}
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public static String getAdPicDir(Context context) {
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return checkDir(getDir(context, "AdPic"));
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}
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public static String getPicPath(Context context, String name) {
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return checkDir(getDir(context, "Pic")) + File.separator + name;
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}
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private static String checkDir(String dir) {
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File directory = new File(dir);
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if (!directory.exists() || !directory.isDirectory()) {
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directory.mkdirs();
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}
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return dir;
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}
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public static void deleteFile(String savePath) {
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File file = new File(savePath);
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if (file.exists()) {
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file.delete();
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}
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}
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public static boolean isEmptyFile(String path) {
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File file = new File(path);
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if (file.exists() && file.length() != 0) {
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return false;
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}
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return true;
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}
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public static void checkDirExists(String dirName) {
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File file = Environment.getExternalStorageDirectory();
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if (file.isDirectory()) {
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File[] fs = file.listFiles();
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for (int i = 0; i < fs.length; i++) {
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if (fs[i].isDirectory()
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&& fs[i].getName().equalsIgnoreCase(dirName)
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&& !fs[i].getName().equals(dirName)) {
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fs[i].delete();
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break;
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}
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}
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}
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}
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public static boolean isMounted() {
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return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
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}
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public static String getDir(Context context, String dir) {
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if (isMounted()) {
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// /storage/emulated/0/Android/data/包名/files
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File file = context.getExternalFilesDir(null);
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if (file != null) {
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return file.getAbsolutePath() + File.separator + dir;
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}
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}
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// /data/data/包名/files
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return context.getFilesDir().getAbsolutePath() + File.separator + dir;
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}
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/*
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* 返回剩余空间 单位MB
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*/
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@SuppressWarnings("deprecation")
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public static float getFreeSpaceByPath(String path) {
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StatFs statfs = new StatFs(path);
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long blockSize = statfs.getBlockSize();
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long availableBlocks = statfs.getAvailableBlocks();
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return availableBlocks * blockSize / 1024f / 1024f;
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}
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public static String isCanDownload(String size) {
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String msg = null;
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String packageSizeStr = "";
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for (int i = 0; i < size.length(); i++) {
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if ((size.charAt(i) >= 48 && size.charAt(i) <= 57) || size.charAt(i) == 46) {
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packageSizeStr += size.charAt(i);
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}
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}
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float packageSize = 0;
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if (packageSizeStr.length() != 0) {
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packageSize = Float.valueOf(packageSizeStr);
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}
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float freeSpace = getFreeSpaceByPath(Environment
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.getExternalStorageDirectory().getAbsolutePath());
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if (freeSpace < packageSize) {
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msg = "手机存储空间不足，无法进行下载！";
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}
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return msg;
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}
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// 下载文件
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public static int downloadFile(String url, String savePath)
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throws IOException {
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DataInputStream dis = null;
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FileOutputStream fos = null;
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try {
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HttpURLConnection connection = (HttpURLConnection) new URL(url)
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.openConnection();
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connection.setRequestMethod("GET");
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connection.setConnectTimeout(5 * 1000);
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connection.setReadTimeout(5 * 1000);
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connection.connect();
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int code = connection.getResponseCode();
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if (code == 200) {
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dis = new DataInputStream(connection.getInputStream());
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File file = new File(savePath);
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if (file.exists()) {
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file.delete();
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}
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file.createNewFile();
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fos = new FileOutputStream(file);
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byte[] buffer = new byte[1024];
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int len;
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while ((len = dis.read(buffer)) != -1) {
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fos.write(buffer, 0, len);
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}
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fos.flush();
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fos.close();
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dis.close();
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}
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return code;
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} finally {
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if (fos != null) {
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fos.close();
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}
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if (dis != null) {
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dis.close();
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}
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}
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}
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// 上传文件
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public static String uploadFile(String url, String filePath, String token) {
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String end = "\r\n";
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String twoHyphens = "--";
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String boundary = UUID.randomUUID().toString().replaceAll("-", "")
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.substring(0, 16);
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try {
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HttpURLConnection connection = (HttpURLConnection) new URL(url)
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.openConnection();
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/*
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* Output to the connection. Default is false, set to true because
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* post method must write something to the connection
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*/
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connection.setDoOutput(true);
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/* Read from the connection. Default is true. */
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connection.setDoInput(true);
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/* Post cannot use caches */
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connection.setUseCaches(false);
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/* Set the post method. Default is GET */
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connection.setRequestMethod("POST");
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/* 设置请求属性 */
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connection.setRequestProperty("Connection", "Keep-Alive");
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connection.setRequestProperty("Charset", "UTF-8");
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connection.setRequestProperty("Content-Type",
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"multipart/form-data;boundary=" + boundary);
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if (token != null) {
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connection.setRequestProperty("Auth", token);
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}
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/* 设置StrictMode 否则HTTPURLConnection连接失败，因为这是在主进程中进行网络连接 */
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StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
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.detectDiskReads().detectDiskWrites().detectNetwork()
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.penaltyLog().build());
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File file = new File(filePath);
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if (file.exists()) {
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Utils.log("name = " + file.getName());
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Utils.log("length = " + file.length());
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}
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/* 设置DataOutputStream，getOutputStream中默认调用connect() */
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DataOutputStream dos = new DataOutputStream(
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connection.getOutputStream()); // output
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// to
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// the
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// connection
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dos.writeBytes(twoHyphens + boundary + end);
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dos.writeBytes("Content-Disposition: form-data; "
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+ "name=\"Filedata\";filename=\"" + file.getName() + "\""
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+ end);
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dos.writeBytes(end);
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/* 取得文件的FileInputStream */
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FileInputStream fStream = new FileInputStream(file);
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/* 设置每次写入8192bytes */
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int bufferSize = 8192;
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byte[] buffer = new byte[bufferSize]; // 8k
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int length = -1;
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/* 从文件读取数据至缓冲区 */
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while ((length = fStream.read(buffer)) != -1) {
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/* 将资料写入DataOutputStream中 */
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dos.write(buffer, 0, length);
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}
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dos.writeBytes(end);
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dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
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/* 关闭流，写入的东西自动生成Http正文 */
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fStream.close();
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/* 关闭DataOutputStream */
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dos.close();
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/* 从返回的输入流读取响应信息 */
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InputStream is = connection.getInputStream(); // input from the
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// connection
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// 正式建立HTTP连接
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Utils.log("con.getResponseCode() = " + connection.getResponseCode());
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int ch;
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StringBuffer b = new StringBuffer();
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while ((ch = is.read()) != -1) {
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b.append((char) ch);
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}
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/* 显示网页响应内容 */
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Utils.log("content = " + b.toString().trim());
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// {"status":"success","url":"http:\/\/api.ghzhushou.com\/temp\/5688e548d7859e6f278b4567.jpg"}
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if (connection.getResponseCode() == HttpStatus.SC_OK) {
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JSONObject response = new JSONObject(b.toString().trim());
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if ("success".equals(response.getString("status"))) {
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return response.getString("url");
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}
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}
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} catch (Exception e) {
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/* 显示异常信息 */
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Utils.log("Fail:" + e);
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}
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return null;
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}
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}
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