InputStream,String,File相互转化
1. String --> InputStream
java" id="highlighter_762868">
|
1
2
3
4
|
InputStream String2InputStream(String str){ ByteArrayInputStream stream = new ByteArrayInputStream(str.getBytes()); return stream;} |
2. InputStream --> String
|
1
2
3
4
5
6
7
8
9
|
String inputStream2String(InputStream is){ BufferedReader in = new BufferedReader(new InputStreamReader(is)); StringBuffer buffer = new StringBuffer(); String line = ""; while ((line = in.readLine()) != null){ buffer.append(line); } return buffer.toString();} |
今天从网上看到了另一种方法，特拿来分享
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
String all_content=null; try { all_content =new String(); InputStream ins = 获取的输入流; ByteArrayOutputStream outputstream = new ByteArrayOutputStream(); byte[] str_b = new byte[1024]; int i = -1; while ((i=ins.read(str_b)) > 0) { outputstream.write(str_b,0,i); } all_content = outputstream.toString(); } catch (Exception e) {e.printStackTrace(); } |
此两种方法上面一种更快，但是比较耗内存，后者速度慢，耗资源少
3、File --> InputStream
|
1
|
InputStream in = new InputStream(new FileInputStream(File)); |
4、InputStream --> File
|
1
2
3
4
5
6
7
8
9
10
|
public void inputstreamtofile(InputStream ins,File file){OutputStream os = new FileOutputStream(file);int bytesRead = 0;byte[] buffer = new byte[8192];while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {os.write(buffer, 0, bytesRead);}os.close();ins.close();} |
感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
