feat：add

jeecg-boot-base-core/src/main/java/org/jeecg/common/util/ExportUtil.java

@@ -1,7 +1,9 @@
 package org.jeecg.common.util;
 
+import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.StrUtil;
+import org.apache.commons.io.FileUtils;
 import org.apache.poi.ss.usermodel.Workbook;
 import org.jeecgframework.poi.excel.ExcelExportUtil;
 import org.jeecgframework.poi.excel.entity.ExportParams;
@@ -15,6 +17,8 @@ import javax.servlet.http.HttpServletResponse;
 import java.io.*;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -102,9 +106,23 @@ public class ExportUtil {
         String pathPrefix = "excelTemplate/";
         String path = pathPrefix + template;
         InputStream inputStream = classPathStream(path);
-        
+        String tempDir = System.getProperty("java.io.tmpdir");
-        String templatePath = "";
+        String tempPath = tempDir + File.separator + template;
+        try {
+            File tempFile = File.createTempFile(tempPath, null);
+            FileUtils.copyInputStreamToFile(inputStream, tempFile);
+            String templatePath = tempFile.getAbsolutePath();
             return new TemplateExportParams(templatePath);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }finally {
+            try {
+                if (ObjectUtil.isNotNull(inputStream)) inputStream.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
     }
 
     public static void exportXls(HttpServletResponse response, String template,

jeecg-module-spectrum-analysis/src/main/java/org/jeecg/modules/service/impl/SpectrumAnalysisServiceImpl.java

@@ -15,6 +15,7 @@ import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.google.common.cache.Cache;
 import com.google.common.collect.Lists;
 import org.apache.commons.io.FileUtils;
+import org.apache.commons.io.IOUtils;
 import org.apache.commons.net.ftp.FTP;
 import org.apache.commons.net.ftp.FTPClient;
 import org.apache.shiro.SecurityUtils;
@@ -4398,11 +4399,16 @@ public class SpectrumAnalysisServiceImpl implements ISpectrumAnalysisService {
         analyze.put("gasRoi", roiChannels(roiChannelsDtosG));
         analyze.putAll(roiResults(roiResultsDtos));
         analyze.put("resultSummary", xeResults(xeResultsDtos));
+
+        PrintWriter writer = null;
+        try {
             // 使数据适配导出模板
             String pathPrefix = "excelTemplate/";
             String path = pathPrefix + SAVETOTXT.getName();
-        String template = ClassUtil.classPath(path);
+            /*String template = ClassUtil.classPath(path);
-        List<String> lines = FileUtil.readUtf8Lines(template);
+            List<String> lines = FileUtil.readUtf8Lines(template);*/
+            InputStream inputStream = ClassUtil.classPathStream(path);
+            List<String> lines = IOUtils.readLines(inputStream, "UTF-8");
             // 正则表达式，匹配${}中的内容
             String regex = "\\$\\{([^}]+)}";
             List<String> newLines = new ArrayList<>();
@@ -4430,8 +4436,7 @@ public class SpectrumAnalysisServiceImpl implements ISpectrumAnalysisService {
                 if (!CollUtil.contains(skip, line))
                     newLines.add(line);
             }
-        PrintWriter writer = null;
+
-        try {
                 String export = "SaveToTxt.txt";
                 writer = ExportUtil.streamWriter(response, export);
                 for (String newLine : newLines) {