http包在flutter中从api获取错误的图像url
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【中文标题】http包在flutter中从api获取错误的图像url【英文标题】：http package get wrong image url from api in flutter 【发布时间】：2020-10-23 02:24:18 【问题描述】：我有一个与 API 连接的 Flutter 应用程序，当我在 Flutter 中使用 http 包发出 Get 请求时，它会毫无问题地检索所有数据，除了图像 url：例如，这是来自浏览器的图像的 url：
http://192.168.43.106:3000/upload\\139585975-e-learning-concept-with-blurred-city-abstract-lights-background.jpg
但是从颤动的响应来看是这样的：
http://192.168.43.106:3000/upload%5C139585975-e-learning-concept-with-blurred-city-abstract-lights-background.jpg
如您所见，url中上传部分后的问题>>>>
这是API中的图像代码
const storage = multer.diskStorage(
destination: (req, file, cb)=>
cb(null, 'upload');
,
filename: (req, file, cb)=>
cb(null, file.originalname);
);
const filter = (req, file, cb)=>
if(file.mimetype == "image/jpg" || file.mimetype == "image/jpeg" || file.mimetype == "image/png")
cb(null, true)
else
cb(null, false);
const upload = multer(
storage: storage,
filter: filter
);
app.post('/service' ,upload.single('file'));
app.use('/upload', express.static('upload'));
这是获取所有数据，包括图片网址：
getAllServices : async (req, res)=>
try
const result = await SERVICES.find();
res.json(
result : result.map(result =>
return
id : result._id,
name : result.name,
file : 'http://192.168.43.106:3000:3000/'+result.file,
desc : result.desc,
price : result.price,
cat : result.cat,
url : 'http://192.168.43.106:3000:3000/service/'+result._id
)
);
catch(err)result.json(err)
,
在颤振方面，我正在使用此代码获取数据：
class ServicesState extends State<Services>
getCategories() async
var res = await http.get("http://192.168.43.106:3000/service/cat/$widget.cid");
if(res.statusCode == 200)
var jsonObject = json.decode(res.body);
return jsonObject['result'];
@override
void initState()
getCategories();
super.initState();
@override
Widget build(BuildContext context)
return Scaffold(
appBar: AppBar(title: Text(widget.name), actions: <Widget>[
IconButton(icon: Icon(Icons.arrow_back),
onPressed: ()=>
Navigator.pushReplacementNamed(context, '/cat'),
,)],),
body: Center(
child: FutureBuilder(
future: getCategories(),
builder: (context, snapshot)
if(snapshot.data != null)
return ListView.builder(
itemCount: snapshot.data.length,
itemBuilder: (context, index)
return ListTile(
onTap: ()
Navigator.pushReplacement(context,
MaterialPageRoute(builder: (context)=>ServiceDetails(
details: ServicesModel(
id: snapshot.data[index]['id'],
name: snapshot.data[index]['name'],
desc: snapshot.data[index]['desc'],
price: snapshot.data[index]['price'],
file: snapshot.data[index]['file']
) ,)));
,
leading:Image.network(snapshot.data[index]['file']),
title: Text(snapshot.data[index]['name']),
subtitle: Text(snapshot.data[index]['price']),
);
,
);
else
return Center(child: CircularProgressIndicator(),);
请记住，除了图片网址之外，所有数据都没有任何问题>>>>
这是我得到的错误：如你所见，我从下面的 api 获得了所有数据>>
I/flutter (15351): [id: 5ef73963f8f4f552704eb5fb, name: momen, desc: uni, img: http://192.168.43.106:3000/mo11111, id: 5ef755aa9011f235d007d432, name: c1, desc: d1, img: http://192.168.43.106:3000/m1, id: 5ef755bb9011f235d007d433, name: c11, desc: d11, img: http://192.168.43.106:3000/m11, id: 5ef755e59011f235d007d434, name: c11, desc: d11, img: http://192.168.43.106:3000/m11, id: 5ef755f39011f235d007d435, name: c1, desc: d1, img: http://192.168.43.106:3000/m1, id: 5ef7567b215f705ec00d439a, name: c1, desc: d1, img: http://192.168.43.106:3000/m1, id: 5ef759d4167fb241b82fcfcd, name: newcat, desc: unimmm5n, img: http://192.168.43.106:3000/upload\500_F_216231494_oJFKyTVOUoiFMzvhhetAcSPktyZwhp7L.jpg, id: 5ef75ae8d313d64f4cecbfc5, name: c1, desc: d1, img: http://192.168.43.106:3000/cupload\Capture.PNG, id: 5ef75f15231fcc4edc13b3b9, name: c1y, desc: d1, img: http://192.168.43.106:3000/cupload\1_ir8j2Ag89QZFAKBZDZWEUw.png, id: 5efa29ba17c0672b88fb6ae8, name: catauth, desc: auth cat desc, img: http://192.168.43.106:30
I/flutter (15351): ══╡ EXCEPTION CAUGHT BY IMAGE RESOURCE SERVICE ╞════════════════════════════════════════════════════
I/flutter (15351): The following NetworkImageLoadException was thrown resolving an image codec:
I/flutter (15351): HTTP request failed, statusCode: 404, http://192.168.43.106:3000/mo11111
I/flutter (15351):
I/flutter (15351): When the exception was thrown, this was the stack:
I/flutter (15351): #0 NetworkImage._loadAsync (package:flutter/src/painting/_network_image_io.dart:90:9)
I/flutter (15351): <asynchronous suspension>
I/flutter (15351): #1 NetworkImage.load (package:flutter/src/painting/_network_image_io.dart:47:14)
I/flutter (15351): #2 ImageProvider.resolve.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter/src/painting/image_provider.dart:327:17)
I/flutter (15351): #3 ImageCache.putIfAbsent (package:flutter/src/painting/image_cache.dart:160:22)
I/flutter (15351): #4 ImageProvider.resolve.<anonymous closure>.<anonymous closure> (package:flutter/src/painting/image_provider.dart:325:84)
I/flutter (15351): #5 SynchronousFuture.then (package:flutter/src/foundation/synchronous_future.dart:38:29)
I/flutter (15351): #6 ImageProvider.resolve.<anonymous closure> (package:flutter/src/painting/image_provider.dart:323:11)
I/flutter (15351): #10 ImageProvider.resolve (package:flutter/src/painting/image_provider.dart:315:16)
I/flutter (15351): #11 _ImageState._resolveImage (package:flutter/src/widgets/image.dart:1010:20)
I/flutter (15351): #12 _ImageState.didChangeDependencies (package:flutter/src/widgets/image.dart:967:5)
I/flutter (15351): #13 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4376:12)
I/flutter (15351): #14 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #15 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #16 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #17 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #18 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #19 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #20 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #21 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #22 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #23 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #24 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #25 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #26 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #27 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #28 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #29 _ListTileElement._mountChild (package:flutter/src/material/list_tile.dart:999:30)
I/flutter (15351): #30 _ListTileElement.mount (package:flutter/src/material/list_tile.dart:1013:5)
I/flutter (15351): #31 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #32 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #33 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #34 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #35 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #36 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #37 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #38 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #39 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5445:14)
I/flutter (15351): #40 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #41 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #42 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #43 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #44 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #45 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #46 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #47 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #48 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5445:14)
I/flutter (15351): #49 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #50 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #51 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5445:14)
I/flutter (15351): #52 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #53 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #54 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #55 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #56 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #57 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #58 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #59 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #60 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5445:14)
I/flutter (15351): #61 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #62 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #63 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #64 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #65 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #66 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4381:11)
I/flutter (15351): #67 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #68 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #69 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #70 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #71 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #72 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #73 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #74 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #75 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #76 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5445:14)
I/flutter (15351): #77 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #78 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #79 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5445:14)
I/flutter (15351): #80 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #81 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #82 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #83 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #84 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #85 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #86 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #87 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #88 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #89 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #90 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #91 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4381:11)
I/flutter (15351): #92 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #93 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #94 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #95 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #96 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #97 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #98 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #99 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #100 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #101 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #102 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #103 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #104 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4381:11)
I/flutter (15351): #105 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #106 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #107 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #108 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #109 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #110 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #111 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #112 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #113 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #114 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5445:14)
I/flutter (15351): #115 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #116 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #117 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5445:14)
I/flutter (15351): #118 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #119 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #120 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #121 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #122 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #123 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #124 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #125 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #126 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #127 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #128 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #129 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #130 ParentDataElement.mount (package:flutter/src/widgets/framework.dart:4617:11)
I/flutter (15351): #131 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #132 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #133 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #134 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #135 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #136 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4381:11)
I/flutter (15351): #137 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
I/flutter (15351): #138 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #139 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #140 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4243:16)
I/flutter (15351): #141 Element.rebuild (package:flutter/src/widgets/framework.dart:3947:5)
I/flutter (15351): #142 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4206:5)
I/flutter (15351): #143 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4201:5)
════════ Exception caught by image resource service ════════════════════════════════════════════════
The following NetworkImageLoadException was thrown resolving an image codec:
HTTP request failed, statusCode: 404, http://192.168.43.106:3000/m1
When the exception was thrown, this was the stack:
#0 NetworkImage._loadAsync (package:flutter/src/painting/_network_image_io.dart:90:9)
<asynchronous suspension>
#1 NetworkImage.load (package:flutter/src/painting/_network_image_io.dart:47:14)
#2 ImageProvider.resolve.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter/src/painting/image_provider.dart:327:17)
#3 ImageCache.putIfAbsent (package:flutter/src/painting/image_cache.dart:160:22)
...
Image provider: NetworkImage("http://192.168.43.106:3000/m1", scale: 1.0)
Image key: NetworkImage("http://192.168.43.106:3000/m1", scale: 1.0)
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ (2) Exception caught by image resource service ════════════════════════════════════════════
HTTP request failed, statusCode: 404, http://192.168.43.106:3000/m11
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ (3) Exception caught by image resource service ════════════════════════════════════════════
HTTP request failed, statusCode: 404, http://192.168.43.106:3000/upload%5C500_F_216231494_oJFKyTVOUoiFMzvhhetAcSPktyZwhp7L.jpg
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ (4) Exception caught by image resource service ════════════════════════════════════════════
HTTP request failed, statusCode: 404, http://192.168.43.106:3000/cupload%5CCapture.PNG
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ (5) Exception caught by image resource service ════════════════════════════════════════════
HTTP request failed, statusCode: 404, http://192.168.43.106:3000/cupload%5C1_ir8j2Ag89QZFAKBZDZWEUw.png
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ (6) Exception caught by image resource service ════════════════════════════════════════════
HTTP request failed, statusCode: 404, http://192.168.43.106:3000/cupload%5C0157d41e-4db9-4d9a-9632-84c8a4cc15f1.png
════════════════════════════════════════════════════════════════════════════════════════════════════
════════ (7) Exception caught by image resource service ════════════════════════════════════════════
HTTP request failed, statusCode: 404, http://192.168.43.106:3000/cupload%5Cdownload%20(1).jfif
════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter (15351): [id: 5ef73963f8f4f552704eb5fb, name: momen, desc: uni, img: http://192.168.43.106:3000/mo11111, id: 5ef755aa9011f235d007d432, name: c1, desc: d1, img: http://192.168.43.106:3000/m1, id: 5ef755bb9011f235d007d433, name: c11, desc: d11, img: http://192.168.43.106:3000/m11, id: 5ef755e59011f235d007d434, name: c11, desc: d11, img: http://192.168.43.106:3000/m11, id: 5ef755f39011f235d007d435, name: c1, desc: d1, img: http://192.168.43.106:3000/m1, id: 5ef7567b215f705ec00d439a, name: c1, desc: d1, img: http://192.168.43.106:3000/m1, id: 5ef759d4167fb241b82fcfcd, name: newcat, desc: unimmm5n, img: http://192.168.43.106:3000/upload\500_F_216231494_oJFKyTVOUoiFMzvhhetAcSPktyZwhp7L.jpg, id: 5ef75ae8d313d64f4cecbfc5, name: c1, desc: d1, img: http://192.168.43.106:3000/cupload\Capture.PNG, id: 5ef75f15231fcc4edc13b3b9, name: c1y, desc: d1, img: http://192.168.43.106:3000/cupload\1_ir8j2Ag89QZFAKBZDZWEUw.png, id: 5efa29ba17c0672b88fb6ae8, name: catauth, desc: auth cat desc, img: http://192.168.43.106:30
I/flutter (15351): #144 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3194:14)
I/flutter (15351): #145 Element.updateChild (package:flutter/src/widgets/framework.dart:2988:12)
I/flutter (15351): #146 SliverMultiBoxAdaptorElement.updateChild (package:flutter/src/widgets/sliver.dart:1288:36)
I/flutter (15351): #147 SliverMultiBoxAdaptorElement.createChild.<anonymous closure> (package:flutter/src/widgets/sliver.dart:1273:20)
I/flutter (15351): #148 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2412:19)
I/flutter (15351): #149 SliverMultiBoxAdaptorElement.createChild (package:flutter/src/widgets/sliver.dart:1266:11)
I/flutter (15351): #150 RenderSliverMultiBoxAdaptor._createOrObtainChild.<anonymous closure> (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:354:23)
I/flutter (15351): #151 RenderObject.invokeLayoutCallback.<anonymous closure> (package:flutter/src/rendering/object.dart:1823:58)
I/flutter (15351): #152 PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:875:15)
I/flutter (15351): #153 RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:1823:13)
I/flutter (15351): #154 RenderSliverMultiBoxAdaptor._createOrObtainChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:343:5)
I/flutter (15351): #155 RenderSliverMultiBoxAdaptor.addInitialChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:427:5)
I/flutter (15351): #156 RenderSliverList.performLayout (package:flutter/src/rendering/sliver_list.dart:78:12)
I/flutter (15351): #157 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter (15351): #158 RenderSliverEdgeInsetsPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:134:11)
I/flutter (15351): #159 RenderSliverPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:373:11)
I/flutter (15351): #160 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter (15351): #161 RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:410:13)
I/flutter (15351): #162 RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1367:12)
I/flutter (15351): #163 RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1285:20)
I/flutter (15351): #164 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter (15351): #165 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
I/flutter (15351): #166 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter (15351): #167 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
I/flutter (15351): #168 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter (15351): #169 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
I/flutter (15351): #170 RenderObject.layout (package:flutter/src/rendering/object.dart:1724:7)
I/flutter (15351): #171 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:105:13)
I/flutter (15351): #172 RenderObject.layout
【问题讨论】：
网址错误... 192.168.43.106:3000/upload\\ 应该是 192.168.43.106:3000/upload/。这是在哪里生成的？ 不，它是正确的，当我将它粘贴到浏览器或flutter Image.network中时，它会给我正确的图像，这个api是我电脑中的本地api，它与手机连接，一切都如我所说，除了图片的网址 【参考方案1】：%5C 是问题见。每当在 dart 中使用 '\something' 时，\ 是旁边的转义序列，它被视为特殊字符。现在你有两个\，所以你知道\的字符值或编码版本是十六进制的5C。
所以你所要做的就是把它当作原始字符串，所以在r'' 中获取字符串，你的工作就完成了
您所能做的就是做一些代码来获取 url 拆分字符串。但这将是一条漫长的道路 希望这可以帮助:)
【讨论】：
您能说明一下如何解决吗？我不明白 在图片网络url中使用这个：r'snapshot.data[index]['file']'以上是关于http包在flutter中从api获取错误的图像url的主要内容，如果未能解决你的问题，请参考以下文章