参数处理

yzg-util-base/src/main/java/com/yanzuoguang/util/helper/HttpHelper.java

 package com.yanzuoguang.util.helper;
 
 
-import com.yanzuoguang.util.exception.CodeException;
 import com.yanzuoguang.util.exception.HttpCodeException;
 import com.yanzuoguang.util.thread.ProcessData;
 import com.yanzuoguang.util.thread.RunProcess;
 
-import javax.xml.ws.http.HTTPException;
 import java.io.*;
 import java.net.HttpURLConnection;
 import java.net.URL;

yzg-util-cloud/src/main/java/com/yanzuoguang/cloud/file/YzgFileService.java

@@ -2,6 +2,9 @@ package com.yanzuoguang.cloud.file;
 
 import com.yanzuoguang.cloud.file.vo.*;
 
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
 /**
  * 文件上传路径
  *
@@ -24,6 +27,15 @@ public interface YzgFileService {
      */
     void removeTempFolder(String tempFolder);
 
+    /**
+     * 下载文件
+     *
+     * @param fromUrl  服务其文件路径
+     * @param response 输出流
+     * @throws IOException
+     */
+    void down(String fromUrl, HttpServletResponse response) throws IOException;
+
     /**
      * 移动文件或文件夹
      *

yzg-util-cloud/src/main/java/com/yanzuoguang/cloud/helper/HttpFileHelper.java

 package com.yanzuoguang.cloud.helper;
 
 import com.yanzuoguang.util.helper.HttpHelper;
+import com.yanzuoguang.util.helper.StringHelper;
 
 import javax.servlet.ServletOutputStream;
 import javax.servlet.http.HttpServletResponse;
@@ -25,6 +26,10 @@ public class HttpFileHelper extends HttpHelper {
     public static void localToDown(String serverFilePath, String saveFileName, HttpServletResponse response) throws IOException {
         //获取文件的长度
         File file = new File(serverFilePath);
+        if (StringHelper.isEmpty(saveFileName)) {
+            File parentFile = file.getParentFile();
+            saveFileName = StringHelper.trimLeft(file.getAbsolutePath().substring(parentFile.getAbsolutePath().length()), "/");
+        }
         //设置文件输出类型
         response.setContentType("application/octet-stream");
 

yzg-util-file/src/main/java/com/yanzuoguang/cloud/file/YzgFileServiceImpl.java

 package com.yanzuoguang.cloud.file;
 
 import com.yanzuoguang.cloud.file.vo.*;
+import com.yanzuoguang.cloud.helper.HttpFileHelper;
 import com.yanzuoguang.util.MediaHelper;
 import com.yanzuoguang.util.MediaParameter;
 import com.yanzuoguang.util.cache.MemoryCache;
 import com.yanzuoguang.util.exception.CodeException;
 import com.yanzuoguang.util.helper.DateHelper;
 import com.yanzuoguang.util.helper.FileHelper;
+import com.yanzuoguang.util.helper.HttpHelper;
 import com.yanzuoguang.util.helper.StringHelper;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.imageio.ImageIO;
+import javax.servlet.http.HttpServletResponse;
 import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.FileInputStream;
@@ -116,6 +119,28 @@ public class YzgFileServiceImpl implements YzgFileService {
         }
     }
 
+
+    /**
+     * 下载文件
+     *
+     * @param fromUrl
+     * @param response
+     */
+    @Override
+    public void down(String fromUrl, HttpServletResponse response) throws IOException {
+        checkFolder(fromUrl);
+        String fromFullUrl = fileConfig.getServerFullPath(fromUrl);
+        // 父文件夹不存在子文件时则删除
+        File file = new File(fromFullUrl);
+        if (file.exists()) {
+            throw new CodeException("文件不存在");
+        }
+        if (file.isDirectory()) {
+            throw new CodeException("文件是目录");
+        }
+        HttpFileHelper.localToDown(fromFullUrl, StringHelper.EMPTY, response);
+    }
+
     /**
      * 移动文件或文件夹
      *