String与InputStream相互转换

1.String to InputStream

  public static InputStream String2InputStream(String name) {
    return new ByteArrayInputStream(name.getBytes());
  }

2.InputStream to String

    这里提供几个方法。

  public static String InputStream2String(InputStream input,String encode) throws IOException {
    StringBuilder builder = new StringBuilder();

    InputStreamReader reader = new InputStreamReader(input,encode);
    BufferedReader bufferedReader = new BufferedReader(reader);
    String line = null;
    try {
      while ((line = bufferedReader.readLine()) != null) {
        builder.append(line);
      }
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      input.close();
    }
    return builder.toString();
  }

  public static String InputStream2String2(InputStream input) throws IOException {
    StringBuffer buffer = new StringBuffer();
    byte[] b = new byte[1024];
    int n;
    try {
      while ((n = input.read(b)) != -1) {
        buffer.append(new String(b, 0, n));
      }
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      input.close();
    }
    return buffer.toString();
  }

  public static String InputStream2String3(InputStream input) throws IOException {
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    int i;
    try {
      while ((i = input.read()) != -1) {
        outputStream.write(i);
      }
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      input.close();
    }
    return outputStream.toString();
  }