Java学习-044-文件拷贝

不用说了，又是一个经常用到的方法，直接上码了。。。敬请各位小主参阅！若有不足，敬请指正，非常感谢！

文件拷贝源码：

     /**
      * <strong>文件拷贝</strong><br>
      * <br>
      * @author Aaron.ffp
      * @version V1.0.0: autotest-base cn.ffp.autotest.base.util FileUtils.java copy, 2016-03-19 12:47:38.299 Exp $
      *
      * @param srcFile 源文件
      * @param desFile 目标文件
      * @param override 是否覆盖
      *
      * @return boolean 成功复制返回 true；否则返回 false
      */
     public static boolean copy(String srcFile, String desFile, boolean override) {
         boolean success = false;

         InputStream is = null;
         OutputStream os = null;

         if (StringUtils.isBlank(srcFile) || StringUtils.isBlank(desFile)) {
             msg = "参数非法：源文件【" + srcFile + "】或目标文件【" + desFile + "】不可为空、null、Tab、回车等，请确认！";
             logger.error(msg);
             return success;
         }

         try {
             File src = new File(srcFile);
             File des = new File(desFile);

             // 判断源文件是否存在且为文件
             if (!src.exists() || src.isDirectory()) {
                 msg = "文件拷贝失败：源文件【" + srcFile + "】不存在或者为目录，请确认！";
                 logger.error(msg);
                 return success;
             }

             // 判断目标文件是否存在且为文件
             if (des.isDirectory()) {
                 msg = "文件拷贝失败：目标文件【" + desFile + "】为目录，请确认！";
                 logger.error(msg);
                 return success;
             } else if (des.exists() && !override) {
                     msg = "文件拷贝失败：目标文件【" + desFile + "】已存在，且您未允许覆盖目标文件，请知悉！";
                     logger.warn(msg);
                     return success;
             }

             des.delete();

             // 创建目标文件所在目录
             if (!FileUtils.createFolder(des.getParent())) {
                 msg = "文件拷贝时创建目标文件【" + desFile + "】目录失败...";
                 logger.error(msg);
                 return success;
             }

             is = new FileInputStream(src);
             os = new FileOutputStream(des);
             int readByte = 0;

             byte[] buffer = new byte[2048];

             while ((readByte = is.read(buffer)) != -1 ) {
                 os.write(buffer, 0, readByte);
             }

             success = true;

             msg = "成功拷贝文件：【" + srcFile + "】至【" + desFile + "】，请知悉！";
             logger.info(msg);
         } catch (FileNotFoundException fnfe) {
             msg = "文件拷贝失败：" + fnfe.getMessage();
             logger.error(msg, fnfe);
             return success;
         } catch (IOException ioe) {
             msg = "文件拷贝失败：" + ioe.getMessage();
             logger.error(msg, ioe);
             return success;
         } finally {
             try {
                 if (os != null) {
                     os.close();
                 }

                 if (is != null) {
                     is.close();
                 }
             } catch (IOException ioe) {
                 msg = "文件拷贝成功后，释放资源失败：" + ioe.getMessage();
                 logger.warn(msg, ioe);

                 return success;
             }
         }

         return success;
     }
     

文件拷贝单元测试源码：

     @Test(description="public static boolean FileUtils.copy(String srcFile, String desFile, boolean override) ---> 破坏性：文件已存在，且允许覆盖\n", dependsOnMethods="test_copy_desFileExists")
     public void test_copy_desFileOverride() {
         String srcFile = ConstantInfo.PROJECT_RESOURCES_HOME + "js" + ConstantInfo.OS_FILE_SEPARATOR + "color.js";
         String desFile = this.baseDir + "color-copy.js";

         Assert.assertTrue(FileUtils.copy(srcFile, desFile, true));
     }

     @Test(description="public static boolean FileUtils.copy(String srcFile, String desFile, boolean override) ---> 破坏性：文件已存在，且不允许覆盖\n", dependsOnMethods="test_copy_ok")
     public void test_copy_desFileExists() {
         String srcFile = ConstantInfo.PROJECT_RESOURCES_HOME + "js" + ConstantInfo.OS_FILE_SEPARATOR + "color.js";
         String desFile = this.baseDir + "color-copy.js";

         Assert.assertFalse(FileUtils.copy(srcFile, desFile, false));
     }

     @Test(description="public static boolean FileUtils.copy(String srcFile, String desFile, boolean override) ---> 通过性\n")
     public void test_copy_ok() {
         String srcFile = ConstantInfo.PROJECT_RESOURCES_HOME + "js" + ConstantInfo.OS_FILE_SEPARATOR + "color.js";
         String desFile = this.baseDir + "color-copy.js";

         Assert.assertTrue(FileUtils.copy(srcFile, desFile, false));
     }

     @Test(description="public static boolean FileUtils.copy(String srcFile, String desFile, boolean override) ---> 破坏性：文件为目录\n")
     public void test_copy_srcIsDirectory() {
         String srcFile = ConstantInfo.PROJECT_RESOURCES_MAIN + "js" + ConstantInfo.OS_FILE_SEPARATOR;
         String desFile = this.baseDir + "color-copy.js";

         Assert.assertFalse(FileUtils.copy(srcFile, desFile, false));
     }

     @Test(description="public static boolean FileUtils.copy(String srcFile, String desFile, boolean override) ---> 破坏性：文件不存在\n")
     public void test_copy_srcNotExist() {
         String srcFile = ConstantInfo.PROJECT_RESOURCES_MAIN + "js" + ConstantInfo.OS_FILE_SEPARATOR + "color.js";
         String desFile = this.baseDir + "color-copy.js";

         Assert.assertFalse(FileUtils.copy(srcFile, desFile, false));
     }

文件拷贝单元测试源码

至此， Java学习-044-文件拷贝 顺利完结，希望此文能够给初学 Java 的您一份参考。

最后，非常感谢亲的驻足，希望此文能对亲有所帮助。热烈欢迎亲一起探讨，共同进步。非常感谢！ ^_^