String 与inputString 互转方法

来源：互联网发布：vc 6.0 安装包知乎编辑：程序博客网时间：2024/05/29 13:41

1、将String字符串转换成字符流

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();
}

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