/* 
 * 
 *   上传图片请求 
 *   @param 
 *   @returns 
 * */  

uploadImage(imgAry) {  
    let formData = new FormData();<br>       //因为需要上传多张图片,所以需要遍历数组,把图片的路径数组放入formData中  
    for(var i = 0;i<imgAry.length;i++){  
        let file = {uri: imgAry[i], type: 'multipart/form-data', name: 'image.png'};   //这里的key(uri和type和name)不能改变,  
        formData.append("files",file);   //这里的files就是后台需要的key  
    }  
    fetch('http://192.168.0.183:8080/whale/test/upload_files',{  
        method:'POST',  
        headers:{  
            'Content-Type':'multipart/form-data',  
        },  
        body:formData,  
    })  
        .then((response) => response.text() )  
        .then((responseData)=>{  

            console.log('responseData',responseData);  
        })  
        .catch((error)=>{console.error('error',error)});  
}  

其中,关于图片的路径,我的是这样的:

iOS:

file:///Users/shaotingzhou/Library/Developer/CoreSimulator/Devices/9462ED30-88C7-4318-BF83-3914B9314D34/data/Containers/Data/Application/E9A05CAF-AF07-4BA3-B2C3-C2EFBC6C2C6A/Documents/images/D5E1640B-836A-4EC9-A5C2-65B2E4E8CFE0.jpg

Android:　

file:///storage/emulated/0/Pictures/image-ec0667ed-ecc5-4eed-928f-26fed6a63860.jpg