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解决网络图片不展示的问题

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季圣华
2023-07-06 23:59:52 +08:00
parent 9d98db0eda
commit 810978ff0e
3 changed files with 34 additions and 4 deletions
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6
jshERP-boot/src/main/java/com/jsh/erp/controller/SystemConfigController.java
View File

@@ -6,6 +6,7 @@ import com.jsh.erp.service.systemConfig.SystemConfigService;
import com.jsh.erp.service.user.UserService;
import com.jsh.erp.service.userBusiness.UserBusinessService;
import com.jsh.erp.utils.BaseResponseInfo;
import com.jsh.erp.utils.FileUtils;
import com.jsh.erp.utils.StringUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
@@ -246,14 +247,17 @@ 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);
} else if(fileUploadType == 2) {
fileUrl = systemConfigService.getFileUrlAliOss(imgPath);
file = FileUtils.UrltoFile(fileUrl);
}
int index = fileUrl.lastIndexOf(".");
String ext = fileUrl.substring(index + 1);
BufferedImage image = systemConfigService.getImageMini(fileUrl, 40);
BufferedImage image = systemConfigService.getImageMini(file, 40);
outputStream = response.getOutputStream();
ImageIO.write(image, ext, outputStream);
response.flushBuffer();

9
jshERP-boot/src/main/java/com/jsh/erp/service/systemConfig/SystemConfigService.java
View File

@@ -35,7 +35,10 @@ import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;
@@ -290,8 +293,8 @@ public class SystemConfigService {
return linkUrl + filePath + "/" + imgPath;
}
public BufferedImage getImageMini(String fileUrl, int w) throws Exception {
BufferedImage img = ImageIO.read(new File(fileUrl));
public BufferedImage getImageMini(File file, int w) throws Exception {
BufferedImage img = ImageIO.read(file);
//获取图片的长和宽
int width = img.getWidth();
int height = img.getHeight();

23
jshERP-boot/src/main/java/com/jsh/erp/utils/FileUtils.java
View File

@@ -2,6 +2,8 @@ package com.jsh.erp.utils;
import org.springframework.util.StringUtils;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.*;
/**
@@ -352,4 +354,25 @@ public class FileUtils {
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;
}
}