package com.jcdm.common.utils.file;
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import java.io.ByteArrayInputStream;
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import java.io.FileInputStream;
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import java.io.InputStream;
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import java.net.URL;
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import java.net.URLConnection;
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import java.util.Arrays;
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import org.apache.poi.util.IOUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.jcdm.common.config.MesConfig;
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import com.jcdm.common.constant.Constants;
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import com.jcdm.common.utils.StringUtils;
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/**
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* 图片处理工具类
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*
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* @author jc
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*/
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public class ImageUtils
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{
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private static final Logger log = LoggerFactory.getLogger(ImageUtils.class);
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public static byte[] getImage(String imagePath)
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{
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InputStream is = getFile(imagePath);
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try
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{
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return IOUtils.toByteArray(is);
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}
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catch (Exception e)
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{
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log.error("图片加载异常 {}", e);
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return null;
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}
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finally
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{
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IOUtils.closeQuietly(is);
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}
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}
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public static InputStream getFile(String imagePath)
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{
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try
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{
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byte[] result = readFile(imagePath);
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result = Arrays.copyOf(result, result.length);
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return new ByteArrayInputStream(result);
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}
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catch (Exception e)
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{
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log.error("获取图片异常 {}", e);
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}
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return null;
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}
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/**
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* 读取文件为字节数据
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*
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* @param url 地址
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* @return 字节数据
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*/
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public static byte[] readFile(String url)
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{
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InputStream in = null;
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try
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{
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if (url.startsWith("http"))
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{
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// 网络地址
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URL urlObj = new URL(url);
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URLConnection urlConnection = urlObj.openConnection();
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urlConnection.setConnectTimeout(30 * 1000);
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urlConnection.setReadTimeout(60 * 1000);
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urlConnection.setDoInput(true);
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in = urlConnection.getInputStream();
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}
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else
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{
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// 本机地址
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String localPath = MesConfig.getProfile();
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String downloadPath = localPath + StringUtils.substringAfter(url, Constants.RESOURCE_PREFIX);
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in = new FileInputStream(downloadPath);
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}
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return IOUtils.toByteArray(in);
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}
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catch (Exception e)
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{
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log.error("获取文件路径异常 {}", e);
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return null;
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}
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finally
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{
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IOUtils.closeQuietly(in);
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}
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}
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}
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