Java 输入流和字符串互相转换

Posted 2020-11-15 深南大道

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;

public class Test4 {

    public static void main(String[] args) {
        String str = "我在深圳";
        InputStream is = StreamUtil.getStrToStream(str);
        System.out.println(str);
        System.out.println(StreamUtil.getStreamToStr(is));
        /**
         * 我在深圳
         * 我在深圳
         */
    }
}

/**
 * 字符串和输入流互转类
 */
class StreamUtil {

    /**
     * 将一个字符串转化为输入流
     *
     * @param sInputString
     * @return
     */
    public static InputStream getStrToStream(String sInputString) {
        if (sInputString != null && !sInputString.trim().equals("")) {
            try {
                ByteArrayInputStream tInputStringStream = new ByteArrayInputStream(sInputString.getBytes());
                return tInputStringStream;
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
        return null;
    }

    /**
     * 将一个输入流转化为字符串
     *
     * @param tInputStream
     * @return
     */
    public static String getStreamToStr(InputStream tInputStream) {
        if (tInputStream != null) {
            try {
                BufferedReader tBufferedReader = new BufferedReader(new InputStreamReader(tInputStream));
                StringBuffer tStringBuffer = new StringBuffer();
                String sTempOneLine;
                while ((sTempOneLine = tBufferedReader.readLine()) != null) {
                    tStringBuffer.append(sTempOneLine);
                }
                return tStringBuffer.toString();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
        return null;
    }

}