{"id":855,"date":"2023-08-29T03:41:37","date_gmt":"2023-12-13T15:22:06","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%b0%86java%e8%af%bb%e5%8f%96%e6%96%87%e4%bb%b6%e5%b9%b6%e8%bd%ac%e6%8d%a2%e4%b8%ba%e5%ad%97%e7%ac%a6%e4%b8%b2%e3%80%82\/"},"modified":"2025-08-03T13:11:21","modified_gmt":"2025-08-03T05:11:21","slug":"%e5%b0%86java%e8%af%bb%e5%8f%96%e6%96%87%e4%bb%b6%e5%b9%b6%e8%bd%ac%e6%8d%a2%e4%b8%ba%e5%ad%97%e7%ac%a6%e4%b8%b2%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86java%e8%af%bb%e5%8f%96%e6%96%87%e4%bb%b6%e5%b9%b6%e8%bd%ac%e6%8d%a2%e4%b8%ba%e5%ad%97%e7%ac%a6%e4%b8%b2%e3%80%82\/","title":{"rendered":"Java\u8bfb\u53d6\u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u5b8c\u6574\u6559\u7a0b | \u9ad8\u6548\u5904\u7406\u6587\u4ef6\u5185\u5bb9\u7684\u65b9\u6cd5"},"content":{"rendered":"<h1>Java\u8bfb\u53d6\u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u591a\u79cd\u65b9\u6cd5<\/h1>\n<p>\u5728Java\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u5c06\u6587\u4ef6\u5185\u5bb9\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u591a\u79cd\u5b9e\u73b0\u6587\u4ef6\u8bfb\u53d6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u6839\u636e\u4e0d\u540c\u573a\u666f\u9009\u62e9\u6700\u9002\u5408\u7684\u65b9\u6848\u3002<\/p>\n<h2>Java\u4e2d\u8bfb\u53d6\u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\u3002\u672c\u6559\u7a0b\u5c06\u63a2\u8ba8\u4ee5\u4e0b\u51e0\u79cd\u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\u4f7f\u7528BufferedReader\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/li>\n<li>\u4f7f\u7528FileInputStream\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/li>\n<li>\u4f7f\u7528Files\u7c7b\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/li>\n<li>\u4f7f\u7528Scanner\u7c7b\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/li>\n<li>\u4f7f\u7528Apache Commons IO FileUtils\u7c7b\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/li>\n<\/ol>\n<div><img decoding=\"async\" class=\"post-images\" title=\"Java\u8bfb\u53d6\u6587\u4ef6\u4e3a\u5b57\u7b26\u4e32\u793a\u4f8b\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/656488dca4b2f92e6c7320df\/4-0.jpg\" alt=\"Java\u8bfb\u53d6\u6587\u4ef6\u4e3a\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u793a\u610f\u56fe\" \/><\/div>\n<h3>\u4f7f\u7528BufferedReader\u8bfb\u53d6\u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528BufferedReader\u7684readLine\u65b9\u6cd5\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u3002\u53ea\u9700\u5c06\u8fd9\u4e9b\u884c\u9010\u884c\u8ffd\u52a0\u5230StringBuilder\u5bf9\u8c61\u4e2d\uff0c\u5e76\u6dfb\u52a0\u6362\u884c\u7b26\u5373\u53ef\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528BufferedReader\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\u7684\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<pre class=\"post-pre\"><code>BufferedReader reader = new BufferedReader(new FileReader(fileName));\r\nStringBuilder stringBuilder = new StringBuilder();\r\nString line = null;\r\nString ls = System.getProperty(\"line.separator\");\r\nwhile ((line = reader.readLine()) != null) {\r\n\tstringBuilder.append(line);\r\n\tstringBuilder.append(ls);\r\n}\r\n\/\/ \u5220\u9664\u6700\u540e\u4e00\u4e2a\u6362\u884c\u7b26\r\nstringBuilder.deleteCharAt(stringBuilder.length() - 1);\r\nreader.close();\r\n\r\nString content = stringBuilder.toString();\r\n<\/code><\/pre>\n<p>\u9664\u4e86\u9010\u884c\u8bfb\u53d6\uff0cBufferedReader\u8fd8\u53ef\u4ee5\u7ed3\u5408\u5b57\u7b26\u6570\u7ec4\u4f7f\u7528\uff0c\u8fd9\u662f\u53e6\u4e00\u79cd\u9ad8\u6548\u7684\u6587\u4ef6\u8bfb\u53d6\u65b9\u6cd5\uff1a<\/p>\n<pre class=\"post-pre\"><code>BufferedReader reader = new BufferedReader(new FileReader(fileName));\r\nStringBuilder stringBuilder = new StringBuilder();\r\nchar[] buffer = new char[10];\r\nwhile (reader.read(buffer) != -1) {\r\n\tstringBuilder.append(new String(buffer));\r\n\tbuffer = new char[10];\r\n}\r\nreader.close();\r\n\r\nString content = stringBuilder.toString();\r\n<\/code><\/pre>\n<h3>\u4f7f\u7528FileInputStream\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528FileInputStream\u548c\u5b57\u8282\u6570\u7ec4\u6765\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\u3002\u8fd9\u79cd\u65b9\u6cd5\u7279\u522b\u9002\u5408\u8bfb\u53d6\u975e\u5b57\u7b26\u578b\u6587\u4ef6\uff0c\u5982\u56fe\u7247\u3001\u89c6\u9891\u7b49\u4e8c\u8fdb\u5236\u6587\u4ef6\uff1a<\/p>\n<pre class=\"post-pre\"><code>FileInputStream fis = new FileInputStream(fileName);\r\nbyte[] buffer = new byte[10];\r\nStringBuilder sb = new StringBuilder();\r\nwhile (fis.read(buffer) != -1) {\r\n\tsb.append(new String(buffer));\r\n\tbuffer = new byte[10];\r\n}\r\nfis.close();\r\n\r\nString content = sb.toString();\r\n<\/code><\/pre>\n<h3>\u4f7f\u7528Files\u7c7b\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/h3>\n<p>Java 7\u5f15\u5165\u7684Files\u5de5\u5177\u7c7b\u63d0\u4f9b\u4e86\u4e00\u79cd\u975e\u5e38\u7b80\u6d01\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u4e00\u884c\u4ee3\u7801\u4e2d\u5c06\u6574\u4e2a\u6587\u4ef6\u5185\u5bb9\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\uff1a<\/p>\n<pre class=\"post-pre\"><code>String content = new String(Files.readAllBytes(Paths.get(fileName)));\r\n<\/code><\/pre>\n<h3>\u4f7f\u7528Scanner\u7c7b\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/h3>\n<p>Scanner\u7c7b\u63d0\u4f9b\u4e86\u4e00\u79cd\u5728Java\u4e2d\u5feb\u901f\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\uff1a<\/p>\n<pre class=\"post-pre\"><code>Scanner scanner = new Scanner(Paths.get(fileName), StandardCharsets.UTF_8.name());\r\nString content = scanner.useDelimiter(\"\\\\A\").next();\r\nscanner.close();\r\n<\/code><\/pre>\n<h3>\u4f7f\u7528Apache Commons IO FileUtils\u7c7b\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32<\/h3>\n<p>\u5982\u679c\u60a8\u7684\u9879\u76ee\u4e2d\u5df2\u7ecf\u4f7f\u7528\u4e86Apache Commons IO\u5e93\uff0c\u90a3\u4e48FileUtils\u7c7b\u63d0\u4f9b\u4e86\u4e00\u79cd\u975e\u5e38\u7b80\u5355\u5feb\u6377\u7684\u65b9\u6cd5\u6765\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\uff1a<\/p>\n<pre class=\"post-pre\"><code>String content = FileUtils.readFileToString(new File(fileName), StandardCharsets.UTF_8);\r\n<\/code><\/pre>\n<h3>Java\u8bfb\u53d6\u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u5b8c\u6574\u793a\u4f8b<\/h3>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u7a0b\u5e8f\u793a\u4f8b\uff0c\u5305\u542b\u4e86\u9002\u5f53\u7684\u5f02\u5e38\u5904\u7406\uff0c\u5e76\u5c55\u793a\u4e86\u5c06\u6587\u4ef6\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\u7684\u5404\u79cd\u65b9\u6cd5\uff1a<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.files;\r\n\r\nimport java.io.BufferedReader;\r\nimport java.io.File;\r\nimport java.io.FileInputStream;\r\nimport java.io.FileReader;\r\nimport java.io.IOException;\r\nimport java.nio.charset.StandardCharsets;\r\nimport java.nio.file.Files;\r\nimport java.nio.file.Paths;\r\nimport java.util.Scanner;\r\n\r\nimport org.apache.commons.io.FileUtils;\r\n\r\npublic class JavaReadFileToString {\r\n\r\n\t\/**\r\n\t * \u672c\u7c7b\u5c55\u793a\u4e86\u5c06\u6587\u4ef6\u5185\u5bb9\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\u7684\u4e0d\u540c\u65b9\u6cd5\r\n\t * \r\n\t * @param args\r\n\t * @throws IOException\r\n\t *\/\r\n\tpublic static void main(String[] args) {\r\n\t\tString fileName = \"\/Users\/scdev\/Downloads\/myfile.txt\";\r\n\r\n\t\tString contents = readUsingScanner(fileName);\r\n\t\tSystem.out.println(\"*****\u4f7f\u7528Scanner\u8bfb\u53d6\u6587\u4ef6\u4e3a\u5b57\u7b26\u4e32*****\\n\" + contents);\r\n\r\n\t\tcontents = readUsingApacheCommonsIO(fileName);\r\n\t\tSystem.out.println(\"*****\u4f7f\u7528Apache Commons IO FileUtils\u8bfb\u53d6\u6587\u4ef6\u4e3a\u5b57\u7b26\u4e32*****\\n\" + contents);\r\n\r\n\t\tcontents = readUsingFiles(fileName);\r\n\t\tSystem.out.println(\"*****\u4f7f\u7528Files\u7c7b\u8bfb\u53d6\u6587\u4ef6\u4e3a\u5b57\u7b26\u4e32*****\\n\" + contents);\r\n\r\n\t\tcontents = readUsingBufferedReader(fileName);\r\n\t\tSystem.out.println(\"*****\u4f7f\u7528BufferedReader\u8bfb\u53d6\u6587\u4ef6\u4e3a\u5b57\u7b26\u4e32*****\\n\" + contents);\r\n\r\n\t\tcontents = readUsingBufferedReaderCharArray(fileName);\r\n\t\tSystem.out.println(\"*****\u4f7f\u7528BufferedReader\u548c\u5b57\u7b26\u6570\u7ec4\u8bfb\u53d6\u6587\u4ef6\u4e3a\u5b57\u7b26\u4e32*****\\n\" + contents);\r\n\r\n\t\tcontents = readUsingFileInputStream(fileName);\r\n\t\tSystem.out.println(\"*****\u4f7f\u7528FileInputStream\u8bfb\u53d6\u6587\u4ef6\u4e3a\u5b57\u7b26\u4e32*****\\n\" + contents);\r\n\r\n\t}\r\n\r\n\tprivate static String readUsingBufferedReaderCharArray(String fileName) {\r\n\t\tBufferedReader reader = null;\r\n\t\tStringBuilder stringBuilder = new StringBuilder();\r\n\t\tchar[] buffer = new char[10];\r\n\t\ttry {\r\n\t\t\treader = new BufferedReader(new FileReader(fileName));\r\n\t\t\twhile (reader.read(buffer) != -1) {\r\n\t\t\t\tstringBuilder.append(new String(buffer));\r\n\t\t\t\tbuffer = new char[10];\r\n\t\t\t}\r\n\t\t} catch (IOException e) {\r\n\t\t\te.printStackTrace();\r\n\t\t} finally {\r\n\t\t\tif (reader != null)\r\n\t\t\t\ttry {\r\n\t\t\t\t\treader.close();\r\n\t\t\t\t} catch (IOException e) {\r\n\t\t\t\t\te.printStackTrace();\r\n\t\t\t\t}\r\n\t\t}\r\n\r\n\t\treturn stringBuilder.toString();\r\n\t}\r\n\r\n\tprivate static String readUsingFileInputStream(String fileName) {\r\n\t\tFileInputStream fis = null;\r\n\t\tbyte[] buffer = new byte[10];\r\n\t\tStringBuilder sb = new StringBuilder();\r\n\t\ttry {\r\n\t\t\tfis = new FileInputStream(fileName);\r\n\r\n\t\t\twhile (fis.read(buffer) != -1) {\r\n\t\t\t\tsb.append(new String(buffer));\r\n\t\t\t\tbuffer = new byte[10];\r\n\t\t\t}\r\n\t\t\tfis.close();\r\n\r\n\t\t} catch (IOException e) {\r\n\t\t\te.printStackTrace();\r\n\t\t} finally {\r\n\t\t\tif (fis != null)\r\n\t\t\t\ttry {\r\n\t\t\t\t\tfis.close();\r\n\t\t\t\t} catch (IOException e) {\r\n\t\t\t\t\te.printStackTrace();\r\n\t\t\t\t}\r\n\t\t}\r\n\t\treturn sb.toString();\r\n\t}\r\n\r\n\tprivate static String readUsingBufferedReader(String fileName) {\r\n\t\tBufferedReader reader = null;\r\n\t\tStringBuilder stringBuilder = new StringBuilder();\r\n\r\n\t\ttry {\r\n\t\t\treader = new BufferedReader(new FileReader(fileName));\r\n\t\t\tString line = null;\r\n\t\t\tString ls = System.getProperty(\"line.separator\");\r\n\t\t\twhile ((line = reader.readLine()) != null) {\r\n\t\t\t\tstringBuilder.append(line);\r\n\t\t\t\tstringBuilder.append(ls);\r\n\t\t\t}\r\n\t\t\t\/\/ \u5220\u9664\u6700\u540e\u4e00\u4e2a\u6362\u884c\u7b26\r\n\t\t\tstringBuilder.deleteCharAt(stringBuilder.length() - 1);\r\n\t\t} catch (IOException e) {\r\n\t\t\te.printStackTrace();\r\n\t\t} finally {\r\n\t\t\tif (reader != null)\r\n\t\t\t\ttry {\r\n\t\t\t\t\treader.close();\r\n\t\t\t\t} catch (IOException e) {\r\n\t\t\t\t\te.printStackTrace();\r\n\t\t\t\t}\r\n\t\t}\r\n\r\n\t\treturn stringBuilder.toString();\r\n\t}\r\n\r\n\tprivate static String readUsingFiles(String fileName) {\r\n\t\ttry {\r\n\t\t\treturn new String(Files.readAllBytes(Paths.get(fileName)));\r\n\t\t} catch (IOException e) {\r\n\t\t\te.printStackTrace();\r\n\t\t\treturn null;\r\n\t\t}\r\n\t}\r\n\r\n\tprivate static String readUsingApacheCommonsIO(String fileName) {\r\n\t\ttry {\r\n\t\t\treturn FileUtils.readFileToString(new File(fileName), StandardCharsets.UTF_8);\r\n\t\t} catch (IOException e) {\r\n\t\t\te.printStackTrace();\r\n\t\t\treturn null;\r\n\t\t}\r\n\t}\r\n\r\n\tprivate static String readUsingScanner(String fileName) {\r\n\t\tScanner scanner = null;\r\n\t\ttry {\r\n\t\t\tscanner = new Scanner(Paths.get(fileName), StandardCharsets.UTF_8.name());\r\n\t\t\t\/\/ \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\"\\\\A\"\u3001\"\\\\Z\"\u6216\"\\\\z\"\u4f5c\u4e3a\u5206\u9694\u7b26\u6b63\u5219\u8868\u8fbe\u5f0f\r\n\t\t\tString data = scanner.useDelimiter(\"\\\\A\").next();\r\n\t\t\treturn data;\r\n\t\t} catch (IOException e) {\r\n\t\t\te.printStackTrace();\r\n\t\t\treturn null;\r\n\t\t} finally {\r\n\t\t\tif (scanner != null)\r\n\t\t\t\tscanner.close();\r\n\t\t}\r\n\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4e0a\u8ff0\u4efb\u4f55\u4e00\u79cd\u65b9\u6cd5\u5728Java\u4e2d\u5c06\u6587\u4ef6\u5185\u5bb9\u8bfb\u53d6\u5230\u5b57\u7b26\u4e32\u4e2d\u3002\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u6587\u4ef6\u975e\u5e38\u5927\uff0c\u4e0d\u5efa\u8bae\u5c06\u6574\u4e2a\u6587\u4ef6\u5185\u5bb9\u4e00\u6b21\u6027\u8bfb\u5165\u5185\u5b58\uff0c\u56e0\u4e3a\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u6ea2\u51fa\u9519\u8bef\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u4ece\u6211\u4eec\u7684GitHub\u4ee3\u7801\u5e93\u4e2d\u67e5\u770b\u66f4\u591aJava IO\u64cd\u4f5c\u793a\u4f8b\u3002<\/p>\n<h3>\u53c2\u8003\u6587\u732e<\/h3>\n<ul class=\"post-ul\">\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/io\/BufferedReader.html\" target=\"_blank\">BufferedReader API\u6587\u6863<\/a><\/li>\n<li><a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/nio\/file\/Files.html\" target=\"_blank\">Files API\u6587\u6863<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Java\u8bfb\u53d6\u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u591a\u79cd\u65b9\u6cd5 \u5728Java\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u5c06\u6587\u4ef6\u5185\u5bb9\u8bfb\u53d6\u4e3a\u5b57\u7b26\u4e32\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2033,967,1188,181,2240],"class_list":{"0":"post-855","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-java-io","8":"tag-java","10":"tag-181","11":"tag-2240"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u8bfb\u53d6\u6587\u4ef6\u5e76\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u5b8c\u6574\u6559\u7a0b | \u9ad8\u6548\u5904\u7406\u6587\u4ef6\u5185\u5bb9\u7684\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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