巧用Java读写文件

今天上班接了一个html文件，2000多行js代码有多余的冒号，狠下心替换到400行放弃了，非常累，于是准备用java代码替换一下。

先贴上之前的js文件

再贴上之后的js文件

可以发现是可以拿代码实现的，读取文件，然后用replace方法，再写入文件

public static void main(String[] args) {

        String f = "C:\\Users\\zhang\\Desktop\\Email.txt";
        File file = new File(f);
        String str = read(f);
        String replace = str.replace("\"\"","\"");
        write(replace,file);
        System.out.println(replace);

    }

    public static String read(String path) {
        StringBuffer res = new StringBuffer();
        String line = null;
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(path), "UTF-8"));
            while ((line = reader.readLine()) != null) {

                if(!line.trim().contains("style=\"\""))
                res.append(line + "\n");
            }
            reader.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return res.toString();
    }

    public static boolean write(String cont, File dist) {
        try {
            BufferedWriter writer = new BufferedWriter( new OutputStreamWriter(new FileOutputStream(dist),"UTF-8")    );
            writer.write(cont);
            writer.flush();
            writer.close();
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

至此，以上效果实现，效率是显而易见的，运行即可，提早下班不是梦！