Java 文件输出为字符串以及字符串输出为文件

红太狼 2021-09-15 10:56 613阅读 0赞

文件输出为字符串示例代码：

*      /**
             * 读取文件为字符串
             * 
             * @return
             */
            public static String readString() {
                String str = "";
                File file = new File("C:/Users/wan7/Desktop/表单/粗集料试验/粗集料冲击值试验（T0322-2000).html");
                try {
                    FileInputStream in = new FileInputStream(file);
                    // size 为字串的长度 ，这里一次性读完
                    int size = in.available();
                    byte[] buffer = new byte[size];
                    in.read(buffer);
                    in.close();
                    str = new String(buffer, "utf-8");
                } catch (IOException e) {
                    return null;
                }
                return str;
            }

字符串输出为文件示例代码：

*      /**
             * 输出到文件
             */
            public static void outFile(String s) {
                File file = new File("C:/Users/wan7/Desktop/11111111111.html");
                try (FileOutputStream fop = new FileOutputStream(file)) {
                    // if file doesn't exists, then create it
                    if (!file.exists()) {
                        file.createNewFile();
                    }
                    // get the content in bytes
                    byte[] contentInBytes = s.getBytes();
        
                    fop.write(contentInBytes);
                    fop.flush();
                    fop.close();
                    System.out.println("Done");
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

**示例代码记录，方便以后引用。**