String与InputStream相互转换

1.String to InputStream

String str = "String与InputStream相互转换";

InputStream in_nocode = new ByteArrayInputStream(str.getBytes());InputStream in_withcode = new ByteArrayInputStream(str.getBytes("UTF-8"));

2.InputStream to String

这里提供几个方法。

方法1：

public String convertStreamToString(InputStream is) {BufferedReader reader = new BufferedReader(new InputStreamReader(is));StringBuilder sb = new StringBuilder();String line = null;try {while ((line = reader.readLine()) != null) {sb.append(line + "/n");}} catch (IOException e) {e.printStackTrace();} finally {try {is.close();} catch (IOException e) {e.printStackTrace();}}return sb.toString();}

方法2：

public String inputStream2String(InputStream in) throws IOException {StringBuffer out = new StringBuffer();byte[] b = new byte[4096];for (int n; (n = in.read(b)) != -1;) {out.append(new String(b, 0, n));}return out.toString();}

方法3：

public static String inputStream2String(InputStream is) throws IOException {ByteArrayOutputStream baos = new ByteArrayOutputStream();int i = -1;while ((i = is.read()) != -1) {baos.write(i);}return baos.toString();}

转载于:https://www.cnblogs.com/sunhan/p/3750163.html

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