前端页面使用axios接受数据时报出unknow
浏览器开发者工具控制台报如下错
下面是books.html
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>SpringMVC案例</title>
<meta content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" name="viewport">
<link rel="stylesheet" href="../plugins/elementui/index.css">
<link rel="stylesheet" href="../plugins/font-awesome/css/font-awesome.min.css">
<link rel="stylesheet" href="../css/style.css">
<div id="app">
<div class="content-header">
<h1>图书管理</h1>
</div>
<div class="app-container">
<div class="box">
<div class="filter-container">
<el-input placeholder="图书名称" v-model="pagination.queryString" style="width: 200px;" class="filter-item"></el-input>
<el-button @click="getAll()" class="dalfBut">查询</el-button>
<el-button type="primary" class="butT" @click="handleCreate()">新建</el-button>
</div>
<el-table size="small" current-row-key="id" :data="dataList" stripe highlight-current-row>
<el-table-column type="index" align="center" label="序号"></el-table-column>
<el-table-column prop="type" label="图书类别" align="center"></el-table-column>
<el-table-column prop="name" label="图书名称" align="center"></el-table-column>
<el-table-column prop="description" label="描述" align="center"></el-table-column>
<el-table-column label="操作" align="center">
<template slot-scope="scope">
<el-button type="primary" size="mini" @click="handleUpdate(scope.row)">编辑</el-button>
<el-button type="danger" size="mini" @click="handleDelete(scope.row)">删除</el-button>
</template>
</el-table-column>
</el-table>
<div class="add-form">
<el-dialog title="新增图书" :visible.sync="dialogFormVisible">
<el-form ref="dataAddForm" :model="formData" :rules="rules" label-position="right" label-width="100px">
<el-row>
<el-col :span="12">
<el-form-item label="图书类别" prop="type">
<el-input v-model="formData.type"/>
</el-form-item>
</el-col>
<el-col :span="12">
<el-form-item label="图书名称" prop="name">
<el-input v-model="formData.name"/>
</el-form-item>
</el-col>
</el-row>
<el-row>
<el-col :span="24">
<el-form-item label="描述">
<el-input v-model="formData.description" type="textarea"></el-input>
</el-form-item>
</el-col>
</el-row>
</el-form>
<div slot="footer" class="dialog-footer">
<el-button @click="dialogFormVisible = false">取消</el-button>
<el-button type="primary" @click="handleAdd()">确定</el-button>
</div>
</el-dialog>
</div>
<div class="add-form">
<el-dialog title="编辑检查项" :visible.sync="dialogFormVisible4Edit">
<el-form ref="dataEditForm" :model="formData" :rules="rules" label-position="right" label-width="100px">
<el-row>
<el-col :span="12">
<el-form-item label="图书类别" prop="type">
<el-input v-model="formData.type"/>
</el-form-item>
</el-col>
<el-col :span="12">
<el-form-item label="图书名称" prop="name">
<el-input v-model="formData.name"/>
</el-form-item>
</el-col>
</el-row>
<el-row>
<el-col :span="24">
<el-form-item label="描述">
<el-input v-model="formData.description" type="textarea"></el-input>
</el-form-item>
</el-col>
</el-row>
</el-form>
<div slot="footer" class="dialog-footer">
<el-button @click="dialogFormVisible4Edit = false">取消</el-button>
<el-button type="primary" @click="handleEdit()">确定</el-button>
</div>
</el-dialog>
</div>
</div>
</div>
</div>
后台控制台没有显示报错
一开始我以为是index.js文件里面的代码格式问题，回来网上找个格式分明一点的，但还是报错
然后我发现浏览器开发者工具中有一个js的代码只显示了个数字1
下面是项目源码链接，包含数据库 数据库名为：db1
链接：https://pan.baidu.com/s/1b4ShKGYlzQYjmUWFvbTLDQ?pwd=1234
提取码：1234
