diff --git a/uapbd/src/public/nc/bs/uapbd/util/GetPlmFileUtil.java b/uapbd/src/public/nc/bs/uapbd/util/GetPlmFileUtil.java
index 53be1cc..43f2a63 100644
--- a/uapbd/src/public/nc/bs/uapbd/util/GetPlmFileUtil.java
+++ b/uapbd/src/public/nc/bs/uapbd/util/GetPlmFileUtil.java
@@ -3,7 +3,6 @@ package nc.bs.uapbd.util;
 import com.alibaba.fastjson.JSONObject;
 import nc.bs.dao.DAOException;
 import nc.bs.logging.Log;
-import nc.bs.logging.Logger;
 import nc.bs.trade.business.HYSuperDMO;
 import nc.vo.bd.defdoc.DefdocVO;
 import nc.vo.cmp.util.StringUtils;
@@ -21,9 +20,7 @@ import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.nio.charset.StandardCharsets;
 import java.text.SimpleDateFormat;
-import java.util.Base64;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.Map;
@@ -49,8 +46,28 @@ public class GetPlmFileUtil {
     private String materialFileIdUrl = "/sipmweb/api/{rid}/relation/{t}/{id}/data?re={re}&start={start}&item={item}";
     // 下载文件
     private String downlownUrl = "/sipmweb/web/download?rid={rid}&id={id}&t={t}&type={type}";
+    // http请求
+    private static final PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();
+    private static final CloseableHttpClient httpClient;
 
-    public WebFile getPlmFiles(String[] materialCodeArr) throws BusinessException, IOException {
+    static {
+        connectionManager.setMaxTotal(5000);
+        connectionManager.setDefaultMaxPerRoute(500);
+
+        RequestConfig globalConfig = RequestConfig.custom()
+                .setConnectionRequestTimeout(50000)
+                .setConnectTimeout(50000)
+                .setSocketTimeout(200000)
+                .setCookieSpec(CookieSpecs.IGNORE_COOKIES)
+                .build();
+
+        httpClient = HttpClients.custom()
+                .setConnectionManager(connectionManager)
+                .setDefaultRequestConfig(globalConfig)
+                .build();
+    }
+
+    public WebFile getPlmFiles(String[] materialCodeArr) throws Exception {
         WebFile file = null;
         if (materialCodeArr == null || materialCodeArr.length == 0) {
             return file;
@@ -71,21 +88,35 @@ public class GetPlmFileUtil {
             InputStream ins = this.doDownloadPlmFile(objId);
             file = new WebFile(fname, ins);
         } else {
+            // 多个物料合并成zip文件输出文件流
             // 创建内存中的 ZIP 输出流
             ByteArrayOutputStream zipOut = new ByteArrayOutputStream();
             ZipOutputStream zipStream = new ZipOutputStream(zipOut);
-            for (String materialCode : materialCodeArr) {
-                JSONObject plmFileJson = this.getPlmFile(materialCode);
-                String objId = plmFileJson.getString("objId");
-                String fname = plmFileJson.getString("fname");
-                InputStream ins = this.doDownloadPlmFile(objId);
-                byte[] bytes = parseFileStream(ins);
-                zipStream.putNextEntry(new ZipEntry(fname));
-                zipStream.write(bytes);
-                zipStream.closeEntry();
+            try {
+                for (String materialCode : materialCodeArr) {
+                    JSONObject plmFileJson = this.getPlmFile(materialCode);
+                    String objId = plmFileJson.getString("objId");
+                    String fname = plmFileJson.getString("fname");
+                    InputStream ins = this.doDownloadPlmFile(objId);
+                    try {
+                        byte[] bytes = parseFileStream(ins);
+                        zipStream.putNextEntry(new ZipEntry(fname));
+                        zipStream.write(bytes);
+                        zipStream.closeEntry();
+                    } finally {
+                        if (ins != null) {
+                            try {
+                                ins.close();
+                            } catch (IOException e) {
+                                logger.error("Failed to close input stream: " + e.getMessage());
+                            }
+                        }
+                    }
+                }
+                zipStream.finish();
+            } finally {
+                zipStream.close();
             }
-            zipStream.finish();
-            zipStream.close();
             SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss");
             String zipName = "物料图纸下载_" + sdf.format(new Date());
             // 构造 WebFile 返回 ZIP 文件
@@ -96,7 +127,7 @@ public class GetPlmFileUtil {
         return file;
     }
 
-    public JSONObject getPlmFile(String materialCode) throws BusinessException, IOException {
+    public JSONObject getPlmFile(String materialCode) throws Exception {
         String materialId = getMaterialId(materialCode);
         return getFileId(materialId);
     }
@@ -168,7 +199,7 @@ public class GetPlmFileUtil {
     /**
      * 调用PLM的下载文件接口
      */
-    private InputStream doDownloadPlmFile(String fileId) throws IOException, BusinessException {
+    private InputStream doDownloadPlmFile(String fileId) throws IOException {
         String fileUrl = plmBaseUrl + downlownUrl;
         Map<String, String> map = new HashMap<>();
         map.put("rid", token);
@@ -191,24 +222,13 @@ public class GetPlmFileUtil {
                 }
             }
         } catch (DAOException e) {
-            Logger.error("getConfigParams-exp:" + e.getMessage());
+            logger.error("Failed to get config parameters for code: " + code, e);
         }
         return map;
     }
 
 
     private String doGet(String requestUrl, Map<String, String> paramMap) throws IOException {
-        PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
-        cm.setMaxTotal(5000);
-        cm.setDefaultMaxPerRoute(500);
-
-        RequestConfig globalConfig = RequestConfig.custom().setConnectionRequestTimeout(50000) // 连接池获取连接超时
-                .setConnectTimeout(50000) // 连接建立超时
-                .setSocketTimeout(200000) // 等待响应超时
-                .setCookieSpec(CookieSpecs.IGNORE_COOKIES).build();
-
-        CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(cm)
-                .setDefaultRequestConfig(globalConfig).build();
         StringBuilder param = new StringBuilder("?");
         if (paramMap != null) {
             for (Map.Entry<String, String> entry : paramMap.entrySet()) {
@@ -233,21 +253,6 @@ public class GetPlmFileUtil {
      * @return 文件流
      */
     private InputStream getFileFromPlm(String requestUrl, Map<String, String> paramMap) throws IOException {
-        PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
-        cm.setMaxTotal(500);
-        cm.setDefaultMaxPerRoute(50);
-
-        RequestConfig globalConfig = RequestConfig.custom()
-                .setConnectionRequestTimeout(5000)
-                .setConnectTimeout(5000)
-                .setSocketTimeout(20000)
-                .setCookieSpec(CookieSpecs.IGNORE_COOKIES)
-                .build();
-
-        CloseableHttpClient httpClient = HttpClients.custom()
-                .setConnectionManager(cm)
-                .setDefaultRequestConfig(globalConfig)
-                .build();
         StringBuilder param = new StringBuilder("?");
         if (paramMap != null) {
             for (Map.Entry<String, String> entry : paramMap.entrySet()) {