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优化缩略图查看接口

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季圣华
2023-07-07 00:33:42 +08:00
parent 6a50552cbd
commit edb972ffaa
3 changed files with 10 additions and 38 deletions
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19
jshERP-boot/src/main/java/com/jsh/erp/controller/SystemConfigController.java
View File

@@ -179,13 +179,6 @@ public class SystemConfigController {
String fileUrl = "";
if(fileUploadType == 1) {
fileUrl = systemConfigService.getFileUrlLocal(imgPath);
File file = new File(fileUrl);
if(!file.exists()){
response.setStatus(404);
throw new RuntimeException("文件不存在..");
}
response.setContentType("application/force-download");// 设置强制下载不打开
response.addHeader("Content-Disposition", "attachment;fileName=" + new String(file.getName().getBytes("UTF-8"),"iso-8859-1"));
inputStream = new BufferedInputStream(new FileInputStream(fileUrl));
} else if(fileUploadType == 2) {
fileUrl = systemConfigService.getFileUrlAliOss(imgPath);
@@ -240,6 +233,7 @@ public class SystemConfigController {
if(StringUtil.isEmpty(imgPath) || imgPath=="null"){
return;
}
InputStream inputStream = null;
OutputStream outputStream = null;
try {
imgPath = imgPath.replace("..", "");
@@ -247,17 +241,20 @@ public class SystemConfigController {
imgPath = imgPath.substring(0, imgPath.length() - 1);
}
String fileUrl = "";
File file = null;
if(fileUploadType == 1) {
fileUrl = systemConfigService.getFileUrlLocal(imgPath);
file = new File(fileUrl);
inputStream = new BufferedInputStream(new FileInputStream(fileUrl));
} else if(fileUploadType == 2) {
fileUrl = systemConfigService.getFileUrlAliOss(imgPath);
file = FileUtils.UrltoFile(fileUrl);
URL url = new URL(fileUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(5 * 1000);
inputStream = conn.getInputStream();// 通过输入流获取图片数据
}
int index = fileUrl.lastIndexOf(".");
String ext = fileUrl.substring(index + 1);
BufferedImage image = systemConfigService.getImageMini(file, 40);
BufferedImage image = systemConfigService.getImageMini(inputStream, 40);
outputStream = response.getOutputStream();
ImageIO.write(image, ext, outputStream);
response.flushBuffer();

4
jshERP-boot/src/main/java/com/jsh/erp/service/systemConfig/SystemConfigService.java
View File

@@ -293,8 +293,8 @@ public class SystemConfigService {
return linkUrl + filePath + "/" + imgPath;
}
public BufferedImage getImageMini(File file, int w) throws Exception {
BufferedImage img = ImageIO.read(file);
public BufferedImage getImageMini(InputStream inputStream, int w) throws Exception {
BufferedImage img = ImageIO.read(inputStream);
//获取图片的长和宽
int width = img.getWidth();
int height = img.getHeight();

25
jshERP-boot/src/main/java/com/jsh/erp/utils/FileUtils.java
View File

@@ -1,9 +1,6 @@
package com.jsh.erp.utils;
import org.springframework.util.StringUtils;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.*;
/**
@@ -353,26 +350,4 @@ public class FileUtils {
fileName = fileName.replace("=","").replace(",","").replace("&","");
return fileName;
}
//将Url转换为File
public static File UrltoFile(String url) throws Exception {
HttpURLConnection httpUrl = (HttpURLConnection) new URL(url).openConnection();
httpUrl.connect();
InputStream ins=httpUrl.getInputStream();
File file = new File(System.getProperty("java.io.tmpdir") + File.separator + "xie");//System.getProperty("java.io.tmpdir")缓存
if (file.exists()) {
file.delete();//如果缓存中存在该文件就删除
}
OutputStream os = new FileOutputStream(file);
int bytesRead;
int len = 8192;
byte[] buffer = new byte[len];
while ((bytesRead = ins.read(buffer, 0, len)) != -1) {
os.write(buffer, 0, bytesRead);
}
os.close();
ins.close();
return file;
}
}