feat(printer): 添加打印任务分页查询和重新打印功能- 引入 PageHelper 和 PageInfo 实现分页查询

- 新增 PrintTaskMapper 接口方法 queryByCondition 和 updateStatus
- 扩展 PrintTaskEntity 实体类，新增 mpId 和 paper 字段- 在 PrinterController 中新增 /task/page 和 /task/reprint/{id} 接口- 更新 PrintTaskMapper.xml，添加查询和更新状态的 SQL语句- 优化打印任务插入逻辑，补充 mpId 和 paper 字段赋值

src/main/java/com/ycwl/basic/controller/pc/PrinterController.java

@@ -1,6 +1,11 @@
 package com.ycwl.basic.controller.pc;
 
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import com.ycwl.basic.mapper.PrintTaskMapper;
+import com.ycwl.basic.model.pc.printer.entity.PrintTaskEntity;
 import com.ycwl.basic.model.pc.printer.entity.PrinterEntity;
+import com.ycwl.basic.model.pc.printer.req.PrintTaskReqQuery;
 import com.ycwl.basic.service.printer.PrinterService;
 import com.ycwl.basic.utils.ApiResponse;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -20,6 +25,9 @@ public class PrinterController {
     @Autowired
     private PrinterService printerService;
 
+    @Autowired
+    private PrintTaskMapper printTaskMapper;
+
     // 查询列表
     @PostMapping("/list")
     public ApiResponse<List<PrinterEntity>> list(@RequestBody PrinterEntity condition) {
@@ -49,4 +57,20 @@ public class PrinterController {
     public ApiResponse<Integer> delete(@PathVariable("id") Integer id) {
         return printerService.delete(id);
     }
+
+    // 分页查询打印任务
+    @PostMapping("/task/page")
+    public ApiResponse<PageInfo<PrintTaskEntity>> taskPage(@RequestBody PrintTaskReqQuery req) {
+        PageHelper.startPage(req.getPageNum(), req.getPageSize());
+        List<PrintTaskEntity> list = printTaskMapper.queryByCondition(req.getPrinterId(), req.getStatus());
+        PageInfo<PrintTaskEntity> pageInfo = new PageInfo<>(list);
+        return ApiResponse.success(pageInfo);
+    }
+
+    // 重新打印(将状态设置为0-未开始)
+    @PostMapping("/task/reprint/{id}")
+    public ApiResponse<Integer> reprint(@PathVariable("id") Integer id) {
+        int result = printTaskMapper.updateStatus(id, 0);
+        return ApiResponse.success(result);
+    }
 }

src/main/java/com/ycwl/basic/mapper/PrintTaskMapper.java

@@ -3,8 +3,15 @@ package com.ycwl.basic.mapper;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.ycwl.basic.model.pc.printer.entity.PrintTaskEntity;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
 
 @Mapper
 public interface PrintTaskMapper extends BaseMapper<PrintTaskEntity> {
     int insertTask(PrintTaskEntity entity);
+
+    List<PrintTaskEntity> queryByCondition(@Param("printerId") Integer printerId, @Param("status") Integer status);
+
+    int updateStatus(@Param("id") Integer id, @Param("status") Integer status);
 }

src/main/java/com/ycwl/basic/model/pc/printer/entity/PrintTaskEntity.java

@@ -28,6 +28,8 @@ public class PrintTaskEntity {
 
     @TableField("height")
     private Integer height;
+    private Integer mpId;
+    private String paper;
 
     @TableField("create_time")
     private Date createTime;

src/main/java/com/ycwl/basic/model/pc/printer/req/PrintTaskReqQuery.java

@@ -0,0 +1,19 @@
+package com.ycwl.basic.model.pc.printer.req;
+
+import com.ycwl.basic.model.common.BaseQueryParameterReq;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+@EqualsAndHashCode(callSuper = true)
+@Data
+public class PrintTaskReqQuery extends BaseQueryParameterReq {
+    /**
+     * 打印机ID
+     */
+    private Integer printerId;
+
+    /**
+     * 状态:0未开始,1已完成,2正在处理,3已失败
+     */
+    private Integer status;
+}

src/main/java/com/ycwl/basic/service/printer/impl/PrinterServiceImpl.java

@@ -561,6 +561,8 @@ public class PrinterServiceImpl implements PrinterService {
 
             PrintTaskEntity task = new PrintTaskEntity();
             task.setPrinterId(printer.getId());
+            task.setMpId(item.getId());
+            task.setPaper(printer.getPreferPaper());
             task.setStatus(0);
             task.setUrl(printUrl);
             task.setHeight(printer.getPreferH());

src/main/resources/mapper/PrintTaskMapper.xml

@@ -2,7 +2,26 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.ycwl.basic.mapper.PrintTaskMapper">
     <insert id="insertTask">
-        insert into print_task(printer_id, status, printer_name, url, width, height, create_time)
-        values (#{printerId}, 0, #{printerName}, #{url}, #{width}, #{height}, NOW())
+        insert into print_task(printer_id, mp_id, paper, status, printer_name, url, width, height, create_time)
+        values (#{printerId}, #{mpId}, #{paper}, 0, #{printerName}, #{url}, #{width}, #{height}, NOW())
     </insert>
+
+    <select id="queryByCondition" resultType="com.ycwl.basic.model.pc.printer.entity.PrintTaskEntity">
+        select id, printer_id, status, printer_name, url, width, height, mp_id, paper, create_time, update_time
+        from print_task
+        where 1=1
+        <if test="printerId != null">
+            and printer_id = #{printerId}
+        </if>
+        <if test="status != null">
+            and status = #{status}
+        </if>
+        order by create_time desc
+    </select>
+
+    <update id="updateStatus">
+        update print_task
+        set status = #{status}, update_time = NOW()
+        where id = #{id}
+    </update>
 </mapper>