Question

我有一个像这样的vue文件，

＆＃13;

export default {
	data(){
		return{
            info: {
                name: '',
                image: '',
              
            },
            errors: []
		}
	},
  
  created: function(){
        this.getInfo();
  },
  
  methods: {
        getInfo: function(){
              this.info.name = response.data.results[0].name;
              this.info.image = response.data.results[0].image;
        }
  }
}

＆＃13;

我将此文件中的数据传递给子Vue组件。子组件如下，

＆＃13;

<template>
    <div class="ui items">
        <div class="item">
            <div class="ui small image">
                {{info.image}}
            </div>
        </div>
    </div>
  
</template>

<script>
export default{

    props:['info']

}
</script>

＆＃13;

我的图像作为blob存储在MySQL数据库中。当我运行我的应用程序时，图像在UI上显示为二进制数据。对象看起来像这样，

这里有人可以帮我显示图像吗？非常感谢你！

Answer 1

你想要的是data url。您需要将字节数组转换为base64。无法使用原始字节。也许使用one of the byte array to base64 functions在计算属性中执行此操作。

<强>标记

<img :src="dataUrl">

行为（未经测试！）

computed : {
    dataUrl(){
        return 'data:image/jpeg;base64,' + btoa(
            new Uint8Array(this.info.image)
            .reduce((data, byte) => data + String.fromCharCode(byte), '')
        );
    }
}

搜索你的良心。将图像作为JSON编码的字节数组发送是我从未见过的，并将猜测，比二进制图像大10倍。 Images in the DB are an antipattern。 JSON中的图像工作，但降低了JSON的可读性，并且可以像Postman一样埋葬工具。要扩大规模，首先要做的是将媒体（照片）与应用分开。这种技术应该保留用于缩略图，而你的45k图像不是缩略图。

Answer 2

您可以使用Base64格式加载图片数据，例如

<img src="data:image/jpeg;base64,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">

对于你的问题，

export default {
    data(){
        return{
            info: {
                name: '',
                image: '',

            },
            errors: []
        }
    },

  created: function(){
        this.getInfo();
  },

  methods: {
        getInfo: function(){
              this.info.name = response.data.results[0].name;
              this.info.image = 'data:image/jpeg;base64,' + btoa(response.data.results[0].image.data);
        }
  }
}

在模板中，

<template>
    <div class="ui items">
        <div class="item">
            <div class="ui small image">
                <img :src="info.image">
            </div>
        </div>
    </div>
</template>

Answer 3

<img :src="require(`../../assets/images/products/${product.img}`)" />

如何使用Vuejs在html中显示mysql blob图像？

3 个答案: