保存數據到本地文件
-
private void saveDataToFile(String fileName,String data) {
-
BufferedWriter writer =
null;
-
File file =
new File(
"d:\\"+ fileName +
".json");
-
//如果文件不存在，則新建一個
-
if(!file.exists()){
-
try {
-
file.createNewFile();
-
}
catch (IOException e) {
-
e.printStackTrace();
-
}
-
}
-
//寫入
-
try {
-
writer =
new BufferedWriter(
new OutputStreamWriter(
new FileOutputStream(file,
false),
"UTF-8"));
-
writer.write(data);
-
}
catch (IOException e) {
-
e.printStackTrace();
-
}
finally {
-
try {
-
if(writer !=
null){
-
writer.close();
-
}
-
}
catch (IOException e) {
-
e.printStackTrace();
-
}
-
}
-
System.out.println(
"文件寫入成功！");
-
}
取數據
-
private String getDatafromFile(String fileName) {
-
-
String Path=
"d:\\" + fileName+
".json";
-
BufferedReader reader =
null;
-
String laststr =
"";
-
try {
-
FileInputStream fileInputStream =
new FileInputStream(Path);
-
InputStreamReader inputStreamReader =
new InputStreamReader(fileInputStream,
"UTF-8");
-
reader =
new BufferedReader(inputStreamReader);
-
String tempString =
null;
-
while ((tempString = reader.readLine()) !=
null) {
-
laststr += tempString;
-
}
-
reader.close();
-
}
catch (IOException e) {
-
e.printStackTrace();
-
}
finally {
-
if (reader !=
null) {
-
try {
-
reader.close();
-
}
catch (IOException e) {
-
e.printStackTrace();
-
}
-
}
-
}
-
return laststr;
-
}