代码下载的后端 api 接口，完成~

ruoyi-generator/src/main/java/com/ruoyi/generator/controller/GenController.java

@@ -76,17 +76,6 @@ public class GenController extends BaseController {
         return AjaxResult.success();
     }
 
-    /**
-     * 生成代码（下载方式）
-     */
-    @PreAuthorize("@ss.hasPermi('tool:gen:code')")
-    @Log(title = "代码生成", businessType = BusinessType.GENCODE)
-    @GetMapping("/download/{tableName}")
-    public void download(HttpServletResponse response, @PathVariable("tableName") String tableName) throws IOException {
-        byte[] data = genTableService.downloadCode(tableName);
-        genCode(response, data);
-    }
-
     /**
      * 生成代码（自定义路径）
      */

ruoyi-generator/src/main/java/com/ruoyi/generator/service/GenTableServiceImpl.java

@@ -127,21 +127,6 @@ public class GenTableServiceImpl implements IGenTableService {
         }
     }
 
-    /**
-     * 生成代码（下载方式）
-     *
-     * @param tableName 表名称
-     * @return 数据
-     */
-    @Override
-    public byte[] downloadCode(String tableName) {
-        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        ZipOutputStream zip = new ZipOutputStream(outputStream);
-        generatorCode(tableName, zip);
-        IOUtils.closeQuietly(zip);
-        return outputStream.toByteArray();
-    }
-
 
     /**
      * 同步数据库

src/main/java/cn/iocoder/dashboard/modules/tool/controller/codegen/ToolCodegenController.java

@@ -1,6 +1,7 @@
 package cn.iocoder.dashboard.modules.tool.controller.codegen;
 
 import cn.hutool.core.io.IoUtil;
+import cn.hutool.core.util.ZipUtil;
 import cn.iocoder.dashboard.common.pojo.CommonResult;
 import cn.iocoder.dashboard.common.pojo.PageResult;
 import cn.iocoder.dashboard.modules.tool.controller.codegen.vo.ToolCodegenDetailRespVO;
@@ -12,6 +13,7 @@ import cn.iocoder.dashboard.modules.tool.convert.codegen.ToolCodegenConvert;
 import cn.iocoder.dashboard.modules.tool.dal.dataobject.codegen.ToolCodegenColumnDO;
 import cn.iocoder.dashboard.modules.tool.dal.dataobject.codegen.ToolCodegenTableDO;
 import cn.iocoder.dashboard.modules.tool.service.codegen.ToolCodegenService;
+import cn.iocoder.dashboard.util.servlet.ServletUtils;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiImplicitParam;
 import io.swagger.annotations.ApiOperation;
@@ -21,12 +23,11 @@ import org.springframework.web.bind.annotation.*;
 import javax.annotation.Resource;
 import javax.servlet.http.HttpServletResponse;
 import javax.validation.Valid;
+import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.List;
 import java.util.Map;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipOutputStream;
 
 import static cn.iocoder.dashboard.common.pojo.CommonResult.success;
 
@@ -84,58 +85,18 @@ public class ToolCodegenController {
     @ApiOperation("下载生成代码")
     @GetMapping("/download")
     @ApiImplicitParam(name = "tableId", required = true, example = "表编号", dataTypeClass = Long.class)
+    // @PreAuthorize("@ss.hasPermi('tool:gen:code')") todo 权限
     public void downloadCodegen(@RequestParam("tableId") Long tableId,
                                 HttpServletResponse response) throws IOException {
         // 生成代码
         Map<String, String> codes = codegenService.generationCodes(tableId);
-        // 构建压缩包
-        byte[] data;
+        // 构建 zip 包
+        String[] paths = codes.keySet().toArray(new String[0]);
+        ByteArrayInputStream[] ins = codes.values().stream().map(IoUtil::toUtf8Stream).toArray(ByteArrayInputStream[]::new);
         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        ZipOutputStream zip = new ZipOutputStream(outputStream);
-        for (Map.Entry<String, String> entry : codes.entrySet()) {
-//                zip.putNextEntry(new ZipEntry(entry.getKey()));
-            zip.putNextEntry(new ZipEntry("123"));
-//                IoUtil.write(zip, Charset.defaultCharset(), false, entry.getValue());
-            zip.write(entry.getValue().getBytes());
-            zip.flush();
-            zip.closeEntry();
-            if (true) {
-                break;
-            }
-        }
-        data = outputStream.toByteArray();
-        IoUtil.close(zip);
-//        try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-//             ZipOutputStream zip = new ZipOutputStream(outputStream)) {
-//            for (Map.Entry<String, String> entry : codes.entrySet()) {
-////                zip.putNextEntry(new ZipEntry(entry.getKey()));
-//                zip.putNextEntry(new ZipEntry("123"));
-////                IoUtil.write(zip, Charset.defaultCharset(), false, entry.getValue());
-//                zip.write(entry.getValue().getBytes());
-//                zip.flush();
-//                zip.closeEntry();
-//                if (true) {
-//                    break;
-//                }
-//            }
-//            data = outputStream.toByteArray();
-//        }
-        // 返回
-//        ServletUtils.writeAttachment(response, "yudao.zip", data);
-        genCode(response, data);
+        ZipUtil.zip(outputStream, paths, ins);
+        // 输出
+        ServletUtils.writeAttachment(response, "codegen.zip", outputStream.toByteArray());
     }
 
-    /**
-     * 生成zip文件
-     */
-    private void genCode(HttpServletResponse response, byte[] data) throws IOException
-    {
-        response.reset();
-        response.addHeader("Access-Control-Allow-Origin", "*");
-        response.addHeader("Access-Control-Expose-Headers", "Content-Disposition");
-        response.setHeader("Content-Disposition", "attachment; filename=\"ruoyi.zip\"");
-        response.addHeader("Content-Length", "" + data.length);
-        response.setContentType("application/octet-stream; charset=UTF-8");
-        IoUtil.write(response.getOutputStream(), false, data);
-    }
 }