String与InputStream的互相转换

String to InputStream

InputStream String2InputStream(String str){    ByteArrayInputStream stream = new ByteArrayInputStream(str.getBytes());    return stream;}

InputStream to String

方法一：

public static String inputStream2String(InputStream in_st){    BufferedReader in = new BufferedReader(new InputStreamReader(in_st));    StringBuffer buffer = new StringBuffer();    String line = "";    while ((line = in.readLine()) != null){      buffer.append(line);    }    return buffer.toString();}

方法二：

public static String convertStreamToString(InputStream is) {              /*            * To convert the InputStream to String we use the BufferedReader.readLine()            * method. We iterate until the BufferedReader return null which means            * there's no more data to read. Each line will appended to a StringBuilder            * and returned as String.            */              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();           }

方法三：引入IO包

// 引入apache的io包import org.apache.commons.io.IOUtils; InputStream in = con.getInputStream();String result = IOUtils.toString(in, "UTF-8");