!9 增加单个jar文件下载方法

Merge pull request !9 from yanghx/master

src/main/java/cn/jiangzeyin/controller/manage/FileControl.java

@@ -3,6 +3,7 @@ package cn.jiangzeyin.controller.manage;
 import cn.hutool.core.date.DateUtil;
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.util.CharsetUtil;
+import cn.hutool.extra.servlet.ServletUtil;
 import cn.jiangzeyin.common.DefaultSystemLog;
 import cn.jiangzeyin.common.JsonMessage;
 import cn.jiangzeyin.common.PageUtil;
@@ -157,6 +158,27 @@ public class FileControl extends BaseController {
         return JsonMessage.getString(200, "上传成功");
     }
 
+    /**
+     * 下载文件
+     *
+     * @return File
+     */
+    @RequestMapping(value = "download")
+    @ResponseBody
+    public String download() {
+        String id = getParameter("id");
+        String filename = getParameter("filename");
+        try {
+            ProjectInfoModel pim = manageService.getProjectInfo(id);
+            String path = pim.getLib() + filename;
+            File file = new File(path);
+            ServletUtil.write(getResponse(), file);
+        } catch (Exception e) {
+            DefaultSystemLog.ERROR().error("下载文件异常", e);
+        }
+        return "下载失败。请刷新页面后重试";
+    }
+
 
     @RequestMapping(value = "clear")
     @ResponseBody

src/main/resources/vm/manage/filemanage.vm

@@ -33,6 +33,7 @@
 ##	删除按钮
 <script type="text/html" id="bar_projects">
     <a href="javascript:;" class="layui-btn layui-btn-sm layui-btn-danger" lay-event="delete">删除</a>
+    <a href="javascript:;" class="layui-btn layui-btn-sm layui-btn-normal" lay-event="download">下载</a>
 </script>
 <script type="text/javascript">
     var id = '$id';
@@ -135,8 +136,21 @@
                 // 删除文件
                 deleteFile(data);
             }
+            if ('download' === event) {
+                // 下载文件
+                downloadFile(data);
+            }
         });
 
+        /**
+         * 下载文件
+         * @param data
+         */
+        function downloadFile(data) {
+            var url = "/file/download?id=" + data.projectid + "&filename=" + data.filename
+            self.location.href = url;
+        }
+
         // 删除文件
         function deleteFile(data) {
             layer.confirm('确定删除文件 ' + data.filename + '？', {title: '系统提示'}, function (index) {