via: http://blog.csdn.net/hanqunfeng/article/details/4364583
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();
}