如果您有java.io.InputStream对象,应该如何处理该对象并生成String?
假设我有一个包含文本数据的InputStream,我想将其转换为String,例如,我可以将其写入日志文件。
获取InputStream并将其转换为字符串的最简单方法是什么?
public String convertStreamToString(InputStream is) {
// ???
}
如果您有java.io.InputStream对象,应该如何处理该对象并生成String?
假设我有一个包含文本数据的InputStream,我想将其转换为String,例如,我可以将其写入日志文件。
获取InputStream并将其转换为字符串的最简单方法是什么?
public String convertStreamToString(InputStream is) {
// ???
}
当前回答
最简单的方法,一行:
public static void main(String... args) throws IOException {
System.out.println(new String(Files.readAllBytes(Paths.get("csv.txt"))));
}
其他回答
快速简便:
String result = (String)new ObjectInputStream( inputStream ).readObject();
这是一个改编自org.apache.commons.io.IOUtils源代码的答案,适用于那些想要apache实现但不想要整个库的人。
private static final int BUFFER_SIZE = 4 * 1024;
public static String inputStreamToString(InputStream inputStream, String charsetName)
throws IOException {
StringBuilder builder = new StringBuilder();
InputStreamReader reader = new InputStreamReader(inputStream, charsetName);
char[] buffer = new char[BUFFER_SIZE];
int length;
while ((length = reader.read(buffer)) != -1) {
builder.append(buffer, 0, length);
}
return builder.toString();
}
我已经创建了这段代码,并且它有效。没有所需的外部插件。
有一个字符串到流和流到字符串的转换器:
import java.io.ByteArrayInputStream;
import java.io.InputStream;
public class STRINGTOSTREAM {
public static void main(String[] args)
{
String text = "Hello Bhola..!\nMy Name Is Kishan ";
InputStream strm = new ByteArrayInputStream(text.getBytes()); // Convert String to Stream
String data = streamTostring(strm);
System.out.println(data);
}
static String streamTostring(InputStream stream)
{
String data = "";
try
{
StringBuilder stringbuld = new StringBuilder();
int i;
while ((i=stream.read())!=-1)
{
stringbuld.append((char)i);
}
data = stringbuld.toString();
}
catch(Exception e)
{
data = "No data Streamed.";
}
return data;
}
Use:
InputStream in = /* Your InputStream */;
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String read;
while ((read=br.readLine()) != null) {
//System.out.println(read);
sb.append(read);
}
br.close();
return sb.toString();
将inputStream转换为字符串的方法
public static String getStringFromInputStream(InputStream inputStream) {
BufferedReader bufferedReader = null;
StringBuilder stringBuilder = new StringBuilder();
String line;
try {
bufferedReader = new BufferedReader(new InputStreamReader(
inputStream));
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line);
}
} catch (IOException e) {
logger.error(e.getMessage());
} finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (IOException e) {
logger.error(e.getMessage());
}
}
}
return stringBuilder.toString();
}