读取文件
public String readData(String url) {// String url = "C:/data.txt";
StringBuffer sb = new StringBuffer();
try {
FileReader read = new FileReader(new File(url));
BufferedReader br=new BufferedReader(read);
String line;
while((line=br.readLine())!=null){
sb.append(line);
sb.append("\n");
}
System.out.print("data="+sb.toString());
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
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