下载图片

src/services/CommonHttp.js

@@ -227,6 +227,41 @@ export function downloadZip(url,filename, options = {}) {
         )
     })
 }
+export function downloadImg(url,filename, options = {}) {
+    return new Promise((resolve, reject) => {
+        axios.defaults.headers['content-type'] = 'application/x-www-form-urlencoded;charset=UTF-8'
+        axios({
+            method: 'post',
+            url: url, // 请求地址
+            data: options, // 参数
+            responseType: 'blob' // 表明返回服务器返回的数据类型
+        }).then(
+            response => {
+                resolve(response.data)
+                let blob = new Blob([response.data], {
+                    type: 'application/png'
+                })
+                console.log(blob)
+                let fileName = filename + '.png'
+                if (window.navigator.msSaveOrOpenBlob) {
+                    // console.log(2)
+                    navigator.msSaveBlob(blob, fileName)
+                } else {
+                    // console.log(3)
+                    var link = document.createElement('a')
+                    link.href = window.URL.createObjectURL(blob)
+                    link.download = fileName
+                    link.click()
+                    //释放内存
+                    window.URL.revokeObjectURL(link.href)
+                }
+            },
+            err => {
+                reject(err)
+            }
+        )
+    })
+}
 
 export function getBaseUrl() {
     return axios.defaults.baseURL;
@@ -236,6 +271,7 @@ export default {
     get,
     post,
     downloadZip,
+    downloadImg,
     put,
     fetchDelete,
     getBaseUrl