com.star.io.resource.BytesResource Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of utils Show documentation

some utility class for java develop

The newest version!

package com.star.io.resource;

import com.star.exception.IORuntimeException;
import com.star.io.CharsetUtil;
import com.star.string.StringUtil;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.StringReader;
import java.net.URL;
import java.nio.charset.Charset;

/**
 * 基于byte[]的资源获取器

 * 注意：此对象中getUrl方法始终返回null
 *
 * @author looly
 * @since 4.0.9
 */
public class BytesResource implements Resource {

    private byte[] bytes;

    /**
     * 构造
     *
     * @param bytes 字节数组
     */
    public BytesResource(byte[] bytes) {
        this.bytes = bytes;
    }

    @Override
    public URL getUrl() {
        return null;
    }

    @Override
    public InputStream getStream() {
        return new ByteArrayInputStream(this.bytes);
    }

    @Override
    public BufferedReader getReader(Charset charset) {
        return new BufferedReader(new StringReader(readStr(charset)));
    }

    @Override
    public String readStr(Charset charset) throws IORuntimeException {
        return StringUtil.str(this.bytes, charset);
    }

    @Override
    public String readUtf8Str() throws IORuntimeException {
        return readStr(CharsetUtil.CHARSET_UTF_8);
    }

    @Override
    public byte[] readBytes() throws IORuntimeException {
        return this.bytes;
    }

}