Java代码输出到txt文件(申请专利贴源码的必备利器)

package cn.test;


import java.io.BufferedReader;
 java.io.BufferedWriter;
 java.io.File;
 java.io.FileReader;
 java.io.FileWriter;
 java.io.Writer;

/**
 * 申请软著代码复制删除注释和空行
 */
public class Test {
    static void main(String[] args) throws Exception {
        //文件读取路径
        File dir = new File("E://实验API//workspace//test-saas//test-common//src//main//java//com//test//sass//custome");
        文件输出路径
        File target = new File("C://Users//test//Desktop//out.txt");
        BufferedWriter bw = new BufferedWriter(new FileWriter(target));

        StringBuffer sb =  StringBuffer();
        loopRead(dir,sb);
        write(sb.toString(),bw);
    }
     遍历文件夹下所有文件
    private void loopRead(File dir,StringBuffer sb){
        File[] files = dir.listFiles();
        if (files!=null)
        for(File file:files){
            if(file.isDirectory()){
                loopRead(file,sb);
            }else {
                if(file.length()!=0){
                    sb.append(readFileToString(file));
                }
            }

        }

    }
    读取文件里面的内容
    static String readFileToString(File file){
        BufferedReader br = ;
        StringBuilder sb =  StringBuilder();
        try {
            br = new BufferedReader( FileReader(file));
            String line = ;
            while((line = br.readLine())!=){
                String s = line.trim();
                if (s.length()==0) {
                    continue;
                }
                if (s.startsWith("/") || s.startsWith("*")) {
                    ;
                }
                sb.append(line).append("n");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(br!=){
                    br.close();
                }
            }  (Exception e2) {
                e2.printStackTrace();
            }
        }
        return sb.toString();

    }
    将读取的路径以及相应的内容写入指定的文件
     write(String str,Writer writer){
         {
            writer.write(str);
        } {

            if(writer!=)
                    writer.close();
            }  (Exception e2) {
                e2.printStackTrace();
            }
        }

    }
}