Java读取本地文件-优快云博客

本文链接：https://blog.youkuaiyun.com/intelrain/article/details/79827571

本文介绍了一个使用Java语言从本地文件系统中读取XML文件的方法。通过InputStreamReader和BufferedReader，该方法能够逐行读取指定路径下的XML文件内容，并将其拼接成一个完整的字符串返回。文章详细展示了如何处理各种可能发生的异常情况，如文件不存在、编码不支持等问题。

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// Java读取本地文件
	public static String getLocalXmlfileFile() {
		// File file = new File("/Users/zsq/Downloads/config.xml");
		File file = new File("/Users/zsq/Downloads/configdemoforpackage.xml");
		StringBuilder localStrBulider = new StringBuilder();
		if (file.isFile() && file.exists()) {
			try {
				InputStreamReader inputStreamReader = new InputStreamReader(new FileInputStream(file), "utf-8");//gbk
				BufferedReader bufferReader = new BufferedReader(inputStreamReader);
				String lineStr = null;
				try {
					while ((lineStr = bufferReader.readLine()) != null) {
						localStrBulider.append(lineStr+"\r\n");//（加\r\n是为了换行）
					}
					bufferReader.close();
					inputStreamReader.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					System.out.println("file read error!");
					e.printStackTrace();
				}
			} catch (UnsupportedEncodingException e) {
				// TODO Auto-generated catch block
				System.out.println("file catch unsupported encoding!");
				e.printStackTrace();
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				System.out.println("file not found!");
				e.printStackTrace();
			}
		} else {
			System.out.println("file is not a file or file is not existing!");

		}
		System.out.println("localStrBulider.toString():" + localStrBulider.toString());
		return localStrBulider.toString();
	}