image. save(f'result/image{i},ipg’) AttributeError:'numpy.ndarray’ object has no attribute 'save’
时间: 2023-12-14 12:03:22 浏览: 175
这个错误是因为在 numpy 库中, ndarray 对象没有 save 方法。如果你想要保存 ndarray 对象为图片,你可以使用 Pillow 库中的 Image 对象,将 ndarray 转化为 Image,然后使用 Image 对象的 save 方法保存为图片。下面是一个例子:
```
from PIL import Image
import numpy as np
# 创建一个随机的 ndarray 对象
img_data = np.random.rand(256, 256, 3) * 255
img_data = img_data.astype(np.uint8)
# 将 ndarray 转化为 Image 对象
img = Image.fromarray(img_data)
# 保存为图片
img.save('result/image.png')
```
这个例子中,我们首先创建了一个随机的三通道图片的 ndarray 对象。然后,我们使用 fromarray 方法将 ndarray 对象转化为 Image 对象,最后使用 save 方法将 Image 对象保存为图片。你可以根据自己的需要修改图片的大小和类型,以及保存的文件名和格式。
相关问题
在网结赛口 htp-l192.168.1.100.8080/newsjretnewslist 中提供了如下所示的 1ON 囊組德式的返回数据: [[id:1001,"utie":"程序员因写代码太亂被系害","detai":"凶手是死者同奪, 维护死者代码时完全看不重而箱下茶 手"," comment":16359,"image":"htp-//192.168.1.100.8080/news/images/6.ipg) 请编写程序, 访间该接口获取缴播, 解析后将数据显示到界面的控件上, 同时将數据保存 廉中.
以下是一个简单的Android代码示例,用于从指定URL获取JSON数据并将其解析并显示在ListView上:
```java
public class MainActivity extends AppCompatActivity {
private ListView listView;
private List<News> newsList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = findViewById(R.id.list_view);
new GetDataTask().execute("http://192.168.1.100:8080/news/newslist");
// TODO: 将数据保存到本地
}
private void showData(List<News> newsList) {
NewsAdapter adapter = new NewsAdapter(this, newsList);
listView.setAdapter(adapter);
}
private class GetDataTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
String result = "";
try {
URL url = new URL(urls[0]);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
if (connection.getResponseCode() == 200) {
InputStream in = connection.getInputStream();
ByteArrayOutputStream out = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len;
while ((len = in.read(buffer)) != -1) {
out.write(buffer, 0, len);
}
result = out.toString();
in.close();
out.close();
}
connection.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
@Override
protected void onPostExecute(String result) {
try {
JSONArray jsonArray = new JSONArray(result);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
News news = new News();
news.setId(jsonObject.getInt("id"));
news.setTitle(jsonObject.getString("title"));
news.setContent(jsonObject.getString("content"));
news.setCommentCount(jsonObject.getInt("comment"));
news.setImageUrl(jsonObject.getString("image"));
newsList.add(news);
}
showData(newsList);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
```
这里使用了AsyncTask来进行网络请求和数据的解析,并将解析后的数据通过自定义的Adapter显示在ListView上。在TODO处,可以将数据保存到本地。这里只是一个简单的示例,实际应用中还需要考虑异常情况和网络请求的优化等问题。
QT改错,#include "widget.h" #include "ui_widget.h" #include <QTime> #include <QTimer> #include <QPixmap> #include <iostream> #include <string> #include <QDebug> Widget::Widget(QWidget *parent) : QWidget(parent) , ui(new Ui::Widget) { ui->setupUi(this); this->count = 0; this->tm = new QTimer(this); this->tm->start(1000); this->ui->label_2->setText(QTime::currentTime().toString("yyyy-MM-dd hh:mm:ss")); QTime time(0,0,0,0); this->ui->timeNumber->display(time.toString("hh:mm:ss")); //初始化label QPixmap pic(":/images/1.ipg"); this->ui->label->setPixmap(pic); for (int i = 1; i <= 9; i ++){ QString file_path = ":/images/"; file_path = QString::number(i) + ".jpg"; ph_set.push_back(file_path); qDebug() << file_path << endl; } connect(this->tm,&QTimer::timeout,this,&Widget::update_tm); } Widget::~Widget() { delete ui; } void Widget::update_tm() { this->count ++; QTime time(0,0,0,0); this->ui->timeNumber->display(time.addSecs(count).toString("mm:ss")); this->ui->label_2->setText(QTime::currentTime().toString("hh:mm:ss")); } void Widget::on_beforeButton_clicked() { } void Widget::on_afterButton_clicked() { }
代码中的图片路径有误,应该将第13行的 "ipg" 改为 "jpg"。正确的代码如下:
```
#include "widget.h"
#include "ui_widget.h"
#include <QTime>
#include <QTimer>
#include <QPixmap>
#include <iostream>
#include <string>
#include <QDebug>
Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
this->count = 0;
this->tm = new QTimer(this);
this->tm->start(1000);
this->ui->label_2->setText(QTime::currentTime().toString("yyyy-MM-dd hh:mm:ss"));
QTime time(0,0,0,0);
this->ui->timeNumber->display(time.toString("hh:mm:ss"));
//初始化label
QPixmap pic(":/images/1.jpg");
this->ui->label->setPixmap(pic);
for (int i = 1; i <= 9; i ++){
QString file_path = ":/images/";
file_path = QString::number(i) + ".jpg";
ph_set.push_back(file_path);
qDebug() << file_path << endl;
}
connect(this->tm,&QTimer::timeout,this,&Widget::update_tm);
}
Widget::~Widget()
{
delete ui;
}
void Widget::update_tm()
{
this->count ++;
QTime time(0,0,0,0);
this->ui->timeNumber->display(time.addSecs(count).toString("mm:ss"));
this->ui->label_2->setText(QTime::currentTime().toString("hh:mm:ss"));
}
void Widget::on_beforeButton_clicked()
{
}
void Widget::on_afterButton_clicked()
{
}
```
阅读全文