如何使用JavaSwing显示用户在JFrame上选择的图像
我正在尝试向用户的个人资料页面添加“个人资料图片”。基本上,我有它的地方,他们可以选择一个文件从他们的计算机和上传到应用程序,它将显示他们的个人资料图片。但是它不工作,我认为它目前无法显示它,但生成的结果不正确 这是我的密码如何使用JavaSwing显示用户在JFrame上选择的图像,java,image,swing,upload,javax.imageio,Java,Image,Swing,Upload,Javax.imageio,我正在尝试向用户的个人资料页面添加“个人资料图片”。基本上,我有它的地方,他们可以选择一个文件从他们的计算机和上传到应用程序,它将显示他们的个人资料图片。但是它不工作,我认为它目前无法显示它,但生成的结果不正确 这是我的密码 import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import java.io.ObjectInp
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.ObjectInputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JFileChooser;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
class createProfilePage extends JFrame implements ActionListener {
Container container = getContentPane();
JLabel name = new JLabel("Name: ");
JTextField nameField = new JTextField();
JLabel age = new JLabel("Age: ");
JTextField ageField = new JTextField();
JLabel interest = new JLabel("Interests: ");
JTextField interestField = new JTextField();
JLabel aboutMe = new JLabel("About me: ");
JTextField aboutMeField = new JTextField();
JLabel phoneNum = new JLabel("Phone Number: ");
JTextField phoneNumberField = new JTextField();
JButton submit = new JButton("Save Profile");
JButton deleteProfile = new JButton("Delete Profile");
JButton uploadPic = new JButton("Upload Profile Picture");
createProfilePage()
{
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
//setting container
setLayoutManager();
setLocationAndSize();
addComponents();
addActionEvent();
setTitle("Welcome");
setSize(600, 500);
}
public void setLayoutManager() {
container.setLayout(null);
}
public void setLocationAndSize()
{
//Setting location and Size of each components using setBounds() method.
name.setBounds(50,100,100,30);
age.setBounds(50,170,100,30);
phoneNum.setBounds(50,240,100,30);
interest.setBounds(50,310,100,30);
aboutMe.setBounds(50,380,100,30);
submit.setBounds(350, 240, 150, 30);
deleteProfile.setBounds(350,310,150,30);
uploadPic.setBounds(350,380,150,30);
nameField.setBounds(150,100,150,30);
ageField.setBounds(150,170,150,30);
phoneNumberField.setBounds(150,240,150,30);
interestField.setBounds(150,310,150,30);
aboutMeField.setBounds(150,380,150,30);
}
public void addComponents() {
container.add(name);
container.add(age);
container.add(phoneNum);
container.add(interest);
container.add(aboutMe);
container.add(nameField);
container.add(ageField);
container.add(phoneNumberField);
container.add(interestField);
container.add(aboutMeField);
container.add(submit);
container.add(deleteProfile);
container.add(uploadPic);
}
public void addActionEvent() {
submit.addActionListener(this);
deleteProfile.addActionListener(this);
uploadPic.addActionListener(this);
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == submit) {
String name = nameField.getText();
String age = ageField.getText();
String phoneNum = phoneNumberField.getText();
String interest = interestField.getText();
String aboutMe = aboutMeField.getText();
try {
Socket socket = new Socket("localhost", 4242);
ObjectInputStream reader = new ObjectInputStream(socket.getInputStream());
//creating user object to send to the server
User user = new User();
} catch (IOException b) {
b.printStackTrace();
}
JOptionPane.showMessageDialog(this, "Profile Creation Successful");
} else if (e.getSource() == deleteProfile) {
String name = null;
String age = null;
String phoneNum = null;
String interest = null;
String aboutMe = null;
JOptionPane.showMessageDialog(this, "Profile Deletion Successful");
} else if (e.getSource() == uploadPic) {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
int result = fileChooser.showOpenDialog(getParent());
if (result == JFileChooser.APPROVE_OPTION) {
try {
File file = fileChooser.getSelectedFile();
//ImageDrawer drawer = new ImageDrawer();
Toolkit toolkit = Toolkit.getDefaultToolkit();
String stringFile = file.toString();
Image image = toolkit.getImage(stringFile);
Path path = Paths.get(stringFile);
Path imagePath = path.toAbsolutePath();
String newStr = imagePath.toString();
BufferedImage picture = ImageIO.read(new File(newStr));
JLabel picLabel = new JLabel(new ImageIcon(picture));
picLabel.setBounds(350, 170, 150, 30);
add(picLabel);
} catch (IOException g) {
JOptionPane.showMessageDialog(null,"ERROR");
}
}
}
}
}
好吧,现在它“起作用了”。此代码可以打开并显示用户选择的图像。布局仍处于中断状态(1),如上传配置文件Pict…
所示。这台计算机上的猜测宽度和截断文本是使用布局管理器、填充和边框在GUI中定位元素的众多原因之一
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.*;
final class createProfilePage extends JFrame implements ActionListener {
Container container = getContentPane();
JLabel name = new JLabel("Name: ");
JTextField nameField = new JTextField();
JLabel age = new JLabel("Age: ");
JTextField ageField = new JTextField();
JLabel interest = new JLabel("Interests: ");
JTextField interestField = new JTextField();
JLabel aboutMe = new JLabel("About me: ");
JTextField aboutMeField = new JTextField();
JLabel phoneNum = new JLabel("Phone Number: ");
JTextField phoneNumberField = new JTextField();
JLabel picLabel = new JLabel();
JButton submit = new JButton("Save Profile");
JButton deleteProfile = new JButton("Delete Profile");
JButton uploadPic = new JButton("Upload Profile Picture");
createProfilePage() {
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
//setting container
setLayoutManager();
setLocationAndSize();
addComponents();
addActionEvent();
setTitle("Welcome");
setSize(600, 500);
}
public void setLayoutManager() {
container.setLayout(null);
}
public void setLocationAndSize() {
//Setting location and Size of each components using setBounds() method.
name.setBounds(50, 100, 100, 30);
age.setBounds(50, 170, 100, 30);
phoneNum.setBounds(50, 240, 100, 30);
interest.setBounds(50, 310, 100, 30);
aboutMe.setBounds(50, 380, 100, 30);
submit.setBounds(350, 240, 150, 30);
deleteProfile.setBounds(350, 310, 150, 30);
uploadPic.setBounds(350, 380, 150, 30);
nameField.setBounds(150, 100, 150, 30);
ageField.setBounds(150, 170, 150, 30);
phoneNumberField.setBounds(150, 240, 150, 30);
interestField.setBounds(150, 310, 150, 30);
aboutMeField.setBounds(150, 380, 150, 30);
picLabel.setBounds(350, 50, 150, 150);
}
public void addComponents() {
container.add(name);
container.add(age);
container.add(phoneNum);
container.add(interest);
container.add(aboutMe);
container.add(nameField);
container.add(ageField);
container.add(phoneNumberField);
container.add(interestField);
container.add(aboutMeField);
container.add(picLabel);
container.add(submit);
container.add(deleteProfile);
container.add(uploadPic);
}
public void addActionEvent() {
submit.addActionListener(this);
deleteProfile.addActionListener(this);
uploadPic.addActionListener(this);
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == uploadPic) {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
int result = fileChooser.showOpenDialog(getParent());
if (result == JFileChooser.APPROVE_OPTION) {
try {
File file = fileChooser.getSelectedFile();
BufferedImage picture = ImageIO.read(file);
picLabel.setIcon(new ImageIcon(picture));
add(picLabel);
} catch (IOException ioe) {
ioe.printStackTrace();
JOptionPane.showMessageDialog(null, "ERROR");
}
}
}
}
public static void main(String[] args) {
Runnable r = () -> {
new createProfilePage().setVisible(true);
};
SwingUtilities.invokeLater(r);
}
}
上传配置文件Pict…
所示。这台计算机上的猜测宽度和截断文本是使用布局管理器、填充和边框在GUI中定位元素的众多原因之一
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.*;
final class createProfilePage extends JFrame implements ActionListener {
Container container = getContentPane();
JLabel name = new JLabel("Name: ");
JTextField nameField = new JTextField();
JLabel age = new JLabel("Age: ");
JTextField ageField = new JTextField();
JLabel interest = new JLabel("Interests: ");
JTextField interestField = new JTextField();
JLabel aboutMe = new JLabel("About me: ");
JTextField aboutMeField = new JTextField();
JLabel phoneNum = new JLabel("Phone Number: ");
JTextField phoneNumberField = new JTextField();
JLabel picLabel = new JLabel();
JButton submit = new JButton("Save Profile");
JButton deleteProfile = new JButton("Delete Profile");
JButton uploadPic = new JButton("Upload Profile Picture");
createProfilePage() {
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
//setting container
setLayoutManager();
setLocationAndSize();
addComponents();
addActionEvent();
setTitle("Welcome");
setSize(600, 500);
}
public void setLayoutManager() {
container.setLayout(null);
}
public void setLocationAndSize() {
//Setting location and Size of each components using setBounds() method.
name.setBounds(50, 100, 100, 30);
age.setBounds(50, 170, 100, 30);
phoneNum.setBounds(50, 240, 100, 30);
interest.setBounds(50, 310, 100, 30);
aboutMe.setBounds(50, 380, 100, 30);
submit.setBounds(350, 240, 150, 30);
deleteProfile.setBounds(350, 310, 150, 30);
uploadPic.setBounds(350, 380, 150, 30);
nameField.setBounds(150, 100, 150, 30);
ageField.setBounds(150, 170, 150, 30);
phoneNumberField.setBounds(150, 240, 150, 30);
interestField.setBounds(150, 310, 150, 30);
aboutMeField.setBounds(150, 380, 150, 30);
picLabel.setBounds(350, 50, 150, 150);
}
public void addComponents() {
container.add(name);
container.add(age);
container.add(phoneNum);
container.add(interest);
container.add(aboutMe);
container.add(nameField);
container.add(ageField);
container.add(phoneNumberField);
container.add(interestField);
container.add(aboutMeField);
container.add(picLabel);
container.add(submit);
container.add(deleteProfile);
container.add(uploadPic);
}
public void addActionEvent() {
submit.addActionListener(this);
deleteProfile.addActionListener(this);
uploadPic.addActionListener(this);
}
@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == uploadPic) {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
int result = fileChooser.showOpenDialog(getParent());
if (result == JFileChooser.APPROVE_OPTION) {
try {
File file = fileChooser.getSelectedFile();
BufferedImage picture = ImageIO.read(file);
picLabel.setIcon(new ImageIcon(picture));
add(picLabel);
} catch (IOException ioe) {
ioe.printStackTrace();
JOptionPane.showMessageDialog(null, "ERROR");
}
}
}
}
public static void main(String[] args) {
Runnable r = () -> {
new createProfilePage().setVisible(true);
};
SwingUtilities.invokeLater(r);
}
}
container.setLayout(空)代码>Java GUI必须在不同的操作系统、屏幕大小、屏幕分辨率等上工作,在不同的地区使用不同的PLAF。因此,它们不利于像素完美布局。而是使用布局管理器,或与布局填充和边框一起使用。如果这一问题得到解决,问题很可能会消失。如果没有,人们可能会更仔细地查看code.BTW:File File=fileChooser.getSelectedFile()//ImageDrawer drawer=新的ImageDrawer();Toolkit=Toolkit.getDefaultToolkit();String stringFile=file.toString();Image=toolkit.getImage(stringFile);Path Path=Path.get(stringFile);Path imagePath=Path.toabsolutionPath();字符串newStr=imagePath.toString();buffereImage picture=ImageIO.read(新文件(newStr))
可以是File File=fileChooser.getSelectedFile();buffereImage picture=ImageIO.read(文件)代码>。在构建类时,添加picLabel
并将其与其他组件一起放置(使用布局和边框)。将其作为类属性保留引用。“使用”加载图像时,将图像设置为标签的图像图标,它将出现。@AndrewThompson谢谢您,这是我第一次使用Swing,我接受了您的建议。我遵循了一个指南,其中说要执行container.setLayout(null),但现在您已经提出了它。在macOS上,它看起来确实是一团糟,但我不认为这是因为布局。谢谢container.setLayout(null)代码>Java GUI必须在不同的操作系统、屏幕大小、屏幕分辨率等上工作,在不同的地区使用不同的PLAF。因此,它们不利于像素完美布局。而是使用布局管理器,或与布局填充和边框一起使用。如果这一问题得到解决,问题很可能会消失。如果没有,人们可能会更仔细地查看code.BTW:File File=fileChooser.getSelectedFile()//ImageDrawer drawer=新的ImageDrawer();Toolkit=Toolkit.getDefaultToolkit();String stringFile=file.toString();Image=toolkit.getImage(stringFile);Path Path=Path.get(stringFile);Path imagePath=Path.toabsolutionPath();字符串newStr=imagePath.toString();buffereImage picture=ImageIO.read(新文件(newStr))
可以是File File=fileChooser.getSelectedFile();buffereImage picture=ImageIO.read(文件)代码>。在构建类时,添加picLabel
并将其与其他组件一起放置(使用布局和边框)。将其作为类属性保留引用。“使用”加载图像时,将图像设置为标签的图像图标,它将出现。@AndrewThompson谢谢您,这是我第一次使用Swing,我接受了您的建议。我遵循了一个指南,其中说要执行container.setLayout(null),但现在您已经提出了它。在macOS上,它看起来确实是一团糟,但我不认为这是因为布局。谢谢谢谢你,我已经实施了它,它正在发挥作用。很appreciated@HovercraftFullOfEels我之所以没有对他的答案投赞成票,是因为我直到现在还没有足够的声誉。你问另一个问题是对的,我已经删除了那条评论。谢谢谢谢你,我已经实施了它,它正在发挥作用。很appreciated@HovercraftFullOfEels我之所以没有对他的答案投赞成票,是因为我直到现在还没有足够的声誉。你问另一个问题是对的,我已经删除了那条评论。非常感谢。