订单特价传入的为orderItemId

src/views/ecw/order/special/index.vue

@@ -78,7 +78,7 @@
           prop="address"
           label="操作">
           <template v-slot="{row}">
-            <el-button size="mini" type="text" v-hasPermi="['ecw:order:update']" @click="$router.push(`/order/discount/${row.prodId}?orderId=${row.orderId}`)">优惠申请</el-button>
+            <el-button size="mini" type="text" v-hasPermi="['ecw:order:update']" @click="$router.push(`/order/discount/${row.orderItemId}?orderId=${row.orderId}`)">优惠申请</el-button>
             <el-button size="mini" type="text" v-hasPermi="['ecw:order:update']">佣金规则</el-button>
             <el-button size="mini" type="text" v-hasPermi="['ecw:order:update']">管理折扣</el-button>
           </template>