java将System.out.println的输出导出到文件中

直接看代码

 public static void saveStreamToFile(String savePath,String input){
       try {
             //savePath like c:/log.txt
             System.setOut(new PrintStream(new FileOutputStream(savePath)));
             System.out.println(input);
       } catch (FileNotFoundException e) {
             e.printStackTrace();
      }
 }