From ce96649e79bf730aef73f3bec205c1c00a743635 Mon Sep 17 00:00:00 2001
From: yz_08 <yz_0812@outlook.com>
Date: 星期三, 03 三月 2021 22:08:01 +0800
Subject: [PATCH] 修改bug
---
febs-common/febs-common-core/src/main/java/cc/mrbird/febs/common/core/utils/MyUtil.java | 97 ++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 81 insertions(+), 16 deletions(-)
diff --git a/febs-common/febs-common-core/src/main/java/cc/mrbird/febs/common/core/utils/MyUtil.java b/febs-common/febs-common-core/src/main/java/cc/mrbird/febs/common/core/utils/MyUtil.java
index 2b4b383..86a0f69 100644
--- a/febs-common/febs-common-core/src/main/java/cc/mrbird/febs/common/core/utils/MyUtil.java
+++ b/febs-common/febs-common-core/src/main/java/cc/mrbird/febs/common/core/utils/MyUtil.java
@@ -2,17 +2,16 @@
import cc.mrbird.febs.common.core.exception.FebsException;
import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.io.FileUtil;
import cn.hutool.core.lang.Dict;
-
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.multipart.MultipartFile;
-import cn.hutool.core.io.FileUtil;
+import sun.misc.BASE64Decoder;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
-import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.zip.ZipEntry;
@@ -22,11 +21,7 @@
public class MyUtil {
public static void downloadFile(File file, HttpServletResponse response) throws IOException {
- InputStream fin = null;
- ServletOutputStream out = null;
- try {
- fin = new FileInputStream(file);
- out = response.getOutputStream();
+ try (InputStream fin = new FileInputStream(file); ServletOutputStream out = response.getOutputStream()) {
response.setCharacterEncoding("utf-8");
response.setContentType("application/x-download");
response.addHeader("Content-Disposition", "attachment;filename=resume.doc");
@@ -34,16 +29,12 @@
byte[] buffer = new byte[1024];
int bytesToRead = -1;
// 通过循环将读入的Word文件的内容输出到浏览器中
- while((bytesToRead = fin.read(buffer)) != -1) {
+ while ((bytesToRead = fin.read(buffer)) != -1) {
out.write(buffer, 0, bytesToRead);
}
} catch (Exception e) {
log.error("下载文件异常" + e);
e.printStackTrace();
- } finally {
- if(fin != null) fin.close();
- if(out != null) out.close();
-
}
}
@@ -117,8 +108,8 @@
if (file.getSize() <= 0) {
throw new FebsException("上传的文件大小需要大于0kb");
}
- if (file.getSize() > 50 * 1024* 1024) {
- throw new FebsException("上传的文件大于50M");
+ if (file.getSize() > 200 * 1024* 1024) {
+ throw new FebsException("上传的文件大于200M");
}
if (!FileUtil.exist(uploadPpath)) {
FileUtil.mkdir(uploadPpath);
@@ -128,13 +119,87 @@
String suffix = "";
if (fileName.indexOf(".") > 0) {
//后缀
- suffix = fileName.substring(fileName.indexOf("."), fileName.length());
+ suffix = fileName.substring(fileName.indexOf("."));
}
//生成新的名字
String newName = nextIdStr + suffix;
//上传
file.transferTo(new File(uploadPpath + newName));
return Dict.create().set("fileName",fileName).set("suffix",suffix).set("newName",newName);
+ }
+ /**
+ * 对字节数组字符串进行Base64解码并生成图片
+ */
+ public static boolean generateImage(String imgStr,String url) {
+ if (imgStr == null) {
+ // 图像数据为空
+ return false;
+ }
+ imgStr = imgStr.split(",")[1];
+ BASE64Decoder decoder = new BASE64Decoder();
+ try {
+ // Base64解码
+ byte[] b = decoder.decodeBuffer(imgStr);
+ for (int i = 0; i < b.length; ++i) {
+ // 调整异常数据
+ if (b[i] < 0) {
+ b[i] += 256;
+ }
+ }
+ // 生成jpeg图片
+ String imgFilePath = url;
+ OutputStream out = new FileOutputStream(imgFilePath);
+ out.write(b);
+ out.flush();
+ out.close();
+ return true;
+ } catch (Exception e) {
+ return false;
+ }
+ }
+
+
+ /**
+ * 将base64字符串，生成文件
+ */
+ public static File convertBase64ToFile(String fileBase64String, String filePath, String fileName) {
+
+ BufferedOutputStream bos = null;
+ FileOutputStream fos = null;
+ File file = null;
+ try {
+ File dir = new File(filePath);
+ if (!dir.exists() && dir.isDirectory()) {//判断文件目录是否存在
+ dir.mkdirs();
+ }
+
+ BASE64Decoder decoder = new BASE64Decoder();
+ byte[] bfile = decoder.decodeBuffer(fileBase64String);
+
+ file = new File(filePath + File.separator + fileName);
+ fos = new FileOutputStream(file);
+ bos = new BufferedOutputStream(fos);
+ bos.write(bfile);
+ return file;
+ } catch (Exception e) {
+ e.printStackTrace();
+ return null;
+ } finally {
+ if (bos != null) {
+ try {
+ bos.close();
+ } catch (IOException e1) {
+ e1.printStackTrace();
+ }
+ }
+ if (fos != null) {
+ try {
+ fos.close();
+ } catch (IOException e1) {
+ e1.printStackTrace();
+ }
+ }
+ }
}
}
--
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