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属性 |
方法 |
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获取根目录 |
request.getServletContext().getRealPath("/"); |
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创建目录 |
File file= new File(path); if(!file.exists()){ file.mkdirs(); } |
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写文件 |
File file =new File("文件路径"); OutputStreamWriter osw =new OutputStreamWriter(new FileOutputStream(file,"是否追加"),"字符编码"); osw.write("写入内容"); osw.flush(); osw.close(); |
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读文件 |
File file =new File("文件路径"); InputStreamReader isr=new InputStreamReader(new FileInputStream(file),"字符编码"); StringBuider sb= new StringBuider(); while(isr.ready()){ sb.append((char)isr.read()); } isr.close(); |
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删除文件 |
File file =new File("path");//有没有引号 file.delete(); |
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静态化技术 |
URL url =new URL ("htpp://www.rsseasy.com"); HttpURLConnection connection =(HttpURLConnection)url.openConnection(); BufferedReader in =new BufferedReader(new InputStreanReader(connection.getInputStream(),"utf-8")); StringBuffer buffer =new StringBuffer(); String line = ""; while((line=in.readLine())!=null){ buffer.append(line); } File file =new File("path"); OutputStreamWrite osw =new OutputStreamWrite(new FileOutputStream(file,file),"utf-8"); osw.write(buffer.toString()); osw.flush(); osw.close(); |
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