Java读文件，写文件

Love The Way You Lie 2022-03-07 20:29 336阅读 0赞

public static void main(String[] args) {
    		int COUNT = 5;
    		String pathname = "E:/浙江营销平台/2.txt";
     		log.info("上传文件路劲为："+pathname);
     		//读文件
     		File file = new File("E:/浙江营销平台/1.txt");
    
     		//写文件
     		File file1 = new File(pathname);
     		FileReader fr= null;
            FileReader fr2= null;
            BufferedReader br = null;
            BufferedReader br2 = null;
            try {
                fr=new FileReader(file);
                fr2=new FileReader(file);
                br=new BufferedReader(fr);
                br2=new BufferedReader(fr2);
                String mobileNumber ="";
    //            Set<String> set = new HashSet<>();
                
                int fileCount = 0;
                while ((mobileNumber = br.readLine())!=null) {
                	fileCount++;
                }
                log.info("行数："+fileCount);
                if(fileCount<=COUNT){
                	log.info("==============进入到if ===============");
                	Set<String> set = MarketeeTaskService.insertRedisBuf( br2);
    	    		 writeMobilesFile(set, file1, pathname);
            	}if(fileCount > COUNT){
            		log.info("==============进入到else=================");
            		for (int i = 0; i < (fileCount / COUNT) + 1; i++) {
            			log.info("==========for===========");
            			Set<String> set = MarketeeTaskService.insertRedisBuf( br2, i);
            			Iterator<String> setValueLs = set.iterator();
            			while(setValueLs.hasNext()){
            				log.info("set==" + setValueLs.next());
            			}
    		    		writeMobilesFile(set, file1, pathname);
    	    		}
            	}
            }catch(Exception e){
            		log.error("出错");
            }finally{
            	
            }
            
            log.info("完成！！！");
    	}
            
            public static Set<String> insertRedisBuf(BufferedReader br){
            	String mobileNumber = "";
            	Set<String> set = new HashSet<String>();
            	try {
    				while ((mobileNumber = br.readLine())!=null) {
    //       		 redisConnection.sAdd(key.getBytes("UTF-8"),mobileNumber.getBytes("UTF-8"));
    					log.info("mobileNumber====" + mobileNumber);
    					set.add(mobileNumber);
    				}
    				return set;
    			} catch (IOException e) {
    				e.printStackTrace();
    			}
            	return set;
            }
            
            public static Set<String> insertRedisBuf(BufferedReader br, int line  ){
            	log.info("============insertRedisBuf=================");
            	String mobileNumber = "";
            	Set<String> set = new HashSet<String>();
            	try {
            		int count = line * 5;
    				while ((mobileNumber = br.readLine())!=null) {
    	           		 if((count == line * 5 || count > line * 5) && count < (line+1) * 5){
    	           			log.info("mobileNumber====" + mobileNumber);
    						set.add(mobileNumber);
    						if(count==((line+1) * 5 -1)){
    							break;
    						}
    	        		 }else{
    	        			 break;
    	        		 }
    	           		count++;
               		 }
    				return set;
    			} catch (IOException e) {
    				e.printStackTrace();
    			}
            	return set;
            }
       	 
            
            private static Map<String,Object> writeMobilesFile(Set<String> finalSet, File file, String filePath) throws Exception {
        		Map<String,Object> mobileMap = new HashMap<>();
    
        		
        		WirterUtils.writeTxt(finalSet, filePath, file);
    
        		mobileMap.put("rows","22");
        		mobileMap.put("filePath",file.getAbsolutePath());
        		return mobileMap;
        	}

WirterUtils

import java.io.File;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.OutputStreamWriter;
    import java.io.PrintWriter;
    import java.io.Writer;
    import java.util.List;
    import java.util.Map;
    import java.util.Set;
    
    public class WirterUtils {
        public static void writeTxt(Set rows, String fileName, File file) throws IOException {
            // 写入txt
            try {
                Writer fw = null;
                if(file == null){
                    file = new File(fileName);
                }
    
                try {
                    fw = new OutputStreamWriter(new FileOutputStream(file,true), "UTF-8");
                    PrintWriter pw = new PrintWriter(fw);
                    for (Object line : rows) {
                        String lineMap = (String) line;
                        StringBuffer linebuffer = new StringBuffer();
                        linebuffer.append(lineMap);
                        linebuffer.append("\r\n");
                        pw.printf(linebuffer.toString(), "\r\n");
                    }
                    pw.flush();
                    pw.close();
                } catch (Exception e) {
                    throw e;
                }finally {
                    if(fw!=null) {
                        fw.close();
                    }
                }
            } catch (Exception e) {
                throw e;
            }
        }
    
    }