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export const modelDemo = query => {
    return request({
        url: './toolsManage/model_demo',
        method: 'get',
        params:query,
        responseType: 'arraybuffer'
    });
};

Add responseType: 'arraybuffer' to the vue-encapsulated interface

 

axios.get('/toolsManage/model_demo', { responseType: 'arraybuffer' })