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自定义JavaFXWebView协议处理程序

webview javafx

自定义JavaFXWebView协议处理程序,webview,javafx,urlconnection,Webview,Javafx,Urlconnection,我正在尝试为使用webview访问单个网站的JavaFX应用程序编写自己的协议处理程序。到目前为止我做了什么 我的定制手机厂 public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory { public URLStreamHandler createURLStreamHandler(String protocol) { System.out.println("Protocol: "

我正在尝试为使用webview访问单个网站的JavaFX应用程序编写自己的协议处理程序。到目前为止我做了什么

我的定制手机厂

public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory {

    public URLStreamHandler createURLStreamHandler(String protocol) {
        System.out.println("Protocol: " + protocol);
        if (protocol.equalsIgnoreCase("http") || protocol.equalsIgnoreCase("https")) {
           return new MyURLStreamHandler();
        } else {
            return new URLStreamHandler() {
                @Override
               protected URLConnection openConnection(URL u) throws IOException {
                    return new URLConnection(u) {
                        @Override
                        public void connect() throws IOException {
                        }
                    };
                }
            };
        }
    }
 }
我的自定义URLStreamHandler

public class MyURLStreamHandler extends java.net.URLStreamHandler{

    protected HttpURLConnection openConnection(URL u){
        MyURLConnection q = new MyURLConnection(u);
        return q;
    }    
}
我的自定义HttpURLConnection

public class MyURLConnection extends HttpURLConnection {

    static int defaultPort = 443;
    InputStream in;
    OutputStream out;
    Socket s;

    publicMyURLConnection(URL url) {
        super(url);
        try {
            setRequestMethod("POST");
        } catch (ProtocolException ex) {
            ex.printStackTrace();
        }
    }

    public void setRequestProperty(String name, String value){
        super.setRequestProperty(name, value);
        System.out.println("Namee: " + name);
        System.out.println("Value: " + value);
    }

    public String getRequestProperty(String name){
        System.out.println("GET REQUEST: ");
        return super.getRequestProperty(name);
    }

    public OutputStream getOutputStream() throws IOException {
        OutputStream os = super.getOutputStream();
        System.out.println("Output: " + os);
        return os;
    }

    public InputStream getInputStream() throws IOException {
        InputStream is = super.getInputStream();
        System.out.println("INout stream: " + is);
       return is;
    }

    @Override
    public void connect() throws IOException {
    }

    @Override
    public void disconnect() {
        throw new UnsupportedOperationException("Not supported yet."); 
    }

    @Override
    public boolean usingProxy() {
        throw new UnsupportedOperationException("Not supported yet."); 
    }
当我运行应用程序时，我得到以下错误，尽管它似乎设置了一些标题

Jul 08, 2013 11:09:04 AM com.sun.webpane.webkit.network.URLLoader doRun
WARNING: Unexpected error
java.net.UnknownServiceException: protocol doesn't support input
at java.net.URLConnection.getInputStream(URLConnection.java:839)
at qmed.QMedURLConnection.getInputStream(MyURLConnection.java:67)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
at com.sun.webpane.webkit.network.URLLoader.receiveResponse(URLLoader.java:383)
at com.sun.webpane.webkit.network.URLLoader.doRun(URLLoader.java:142)
at com.sun.webpane.webkit.network.URLLoader.access$000(URLLoader.java:44)
at com.sun.webpane.webkit.network.URLLoader$1.run(URLLoader.java:106)
at com.sun.webpane.webkit.network.URLLoader$1.run(URLLoader.java:103)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.webpane.webkit.network.URLLoader.run(URLLoader.java:103)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
我所要做的就是获取给定请求的响应并读取其二进制数据。我希望协议的行为与默认协议完全相同，只检查给定响应的二进制数据。我做错了什么

应用程序正在进行所有URLConnection的短路。当协议为http或https时，使用HTTPURLConnection作为我的自定义URLConnection类，并在使用其他协议时启动默认的URLStreamHandler是否正确，就像我在MyURLStreamHandlerFactory中所做的那样？我是否应该扩展MYURLConnection中的默认URLConnection类来处理相同的所有协议

任何帮助都将不胜感激，因为这是一个威胁项目的问题

谢谢

可能您缺少的只是一个
setDoInput（true）
或重写
getDoInput（）
并返回true（我就是这么做的）

如果这无助于查看我的工作解决方案：

MyURLStreamHandlerFactory:

import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;

public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory
{

    public URLStreamHandler createURLStreamHandler(String protocol)
    {
        if (protocol.equals("myapp"))
        {
            return new MyURLHandler();
        }
        return null;
    }

}

URL.setURLStreamHandlerFactory(new MyURLStreamHandlerFactory());

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;

public class MyURLHandler extends URLStreamHandler
{

    @Override
    protected URLConnection openConnection(URL url) throws IOException
    {
        return new MyURLConnection(url);
    }

}

import java.io.*;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;

/**
 * Register a protocol handler for URLs like this: <code>myapp:///pics/sland.gif</code><br>
 */
public class MyURLConnection extends URLConnection
{

    private byte[] data;

    @Override
    public void connect() throws IOException
    {
        if (connected)
        {
            return;
        }
        loadImage();
        connected = true;
    }

    public String getHeaderField(String name)
    {
        if ("Content-Type".equalsIgnoreCase(name))
        {
            return getContentType();
        }
        else if ("Content-Length".equalsIgnoreCase(name))
        {
            return "" + getContentLength();
        }
        return null;
    }

    public String getContentType()
    {
        String fileName = getURL().getFile();
        String ext = fileName.substring(fileName.lastIndexOf('.'));
        return "image/" + ext; // TODO: switch based on file-type
    }

    public int getContentLength()
    {
        return data.length;
    }

    public long getContentLengthLong()
    {
        return data.length;
    }

    public boolean getDoInput()
    {
        return true;
    }

    public InputStream getInputStream() throws IOException
    {
        connect();
        return new ByteArrayInputStream(data);
    }

    private void loadImage() throws IOException
    {
        if (data != null)
        {
            return;
        }
        try
        {
            int timeout = this.getConnectTimeout();
            long start = System.currentTimeMillis();
            URL url = getURL();

            String imgPath = url.toExternalForm();
            imgPath = imgPath.startsWith("myapp://") ? imgPath.substring("myapp://".length()) : imgPath.substring("myapp:".length()); // attention: triple '/' is reduced to a single '/'

            // this is my own asynchronous image implementation
            // instead of this part (including the following loop) you could do your own (synchronous) loading logic
            MyImage img = MyApp.getImage(imgPath);
            do
            {
                if (img.isFailed())
                {
                    throw new IOException("Could not load image: " + getURL());
                }
                else if (!img.hasData())
                {
                    long now = System.currentTimeMillis();
                    if (now - start > timeout)
                    {
                        throw new SocketTimeoutException();
                    }
                    Thread.sleep(100);
                }
            } while (!img.hasData());
            data = img.getData();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
    }

    public OutputStream getOutputStream() throws IOException
    {
        // this might be unnecessary - the whole method can probably be omitted for our purposes
        return new ByteArrayOutputStream();
    }

    public java.security.Permission getPermission() throws IOException
    {
        return null; // we need no permissions to access this URL
    }

}

<img src="myapp:///pics/image.png"/>
注册工厂：

import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;

public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory
{

    public URLStreamHandler createURLStreamHandler(String protocol)
    {
        if (protocol.equals("myapp"))
        {
            return new MyURLHandler();
        }
        return null;
    }

}

URL.setURLStreamHandlerFactory(new MyURLStreamHandlerFactory());

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;

public class MyURLHandler extends URLStreamHandler
{

    @Override
    protected URLConnection openConnection(URL url) throws IOException
    {
        return new MyURLConnection(url);
    }

}

import java.io.*;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;

/**
 * Register a protocol handler for URLs like this: <code>myapp:///pics/sland.gif</code><br>
 */
public class MyURLConnection extends URLConnection
{

    private byte[] data;

    @Override
    public void connect() throws IOException
    {
        if (connected)
        {
            return;
        }
        loadImage();
        connected = true;
    }

    public String getHeaderField(String name)
    {
        if ("Content-Type".equalsIgnoreCase(name))
        {
            return getContentType();
        }
        else if ("Content-Length".equalsIgnoreCase(name))
        {
            return "" + getContentLength();
        }
        return null;
    }

    public String getContentType()
    {
        String fileName = getURL().getFile();
        String ext = fileName.substring(fileName.lastIndexOf('.'));
        return "image/" + ext; // TODO: switch based on file-type
    }

    public int getContentLength()
    {
        return data.length;
    }

    public long getContentLengthLong()
    {
        return data.length;
    }

    public boolean getDoInput()
    {
        return true;
    }

    public InputStream getInputStream() throws IOException
    {
        connect();
        return new ByteArrayInputStream(data);
    }

    private void loadImage() throws IOException
    {
        if (data != null)
        {
            return;
        }
        try
        {
            int timeout = this.getConnectTimeout();
            long start = System.currentTimeMillis();
            URL url = getURL();

            String imgPath = url.toExternalForm();
            imgPath = imgPath.startsWith("myapp://") ? imgPath.substring("myapp://".length()) : imgPath.substring("myapp:".length()); // attention: triple '/' is reduced to a single '/'

            // this is my own asynchronous image implementation
            // instead of this part (including the following loop) you could do your own (synchronous) loading logic
            MyImage img = MyApp.getImage(imgPath);
            do
            {
                if (img.isFailed())
                {
                    throw new IOException("Could not load image: " + getURL());
                }
                else if (!img.hasData())
                {
                    long now = System.currentTimeMillis();
                    if (now - start > timeout)
                    {
                        throw new SocketTimeoutException();
                    }
                    Thread.sleep(100);
                }
            } while (!img.hasData());
            data = img.getData();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
    }

    public OutputStream getOutputStream() throws IOException
    {
        // this might be unnecessary - the whole method can probably be omitted for our purposes
        return new ByteArrayOutputStream();
    }

    public java.security.Permission getPermission() throws IOException
    {
        return null; // we need no permissions to access this URL
    }

}

<img src="myapp:///pics/image.png"/>
MyURLHandler:

import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;

public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory
{

    public URLStreamHandler createURLStreamHandler(String protocol)
    {
        if (protocol.equals("myapp"))
        {
            return new MyURLHandler();
        }
        return null;
    }

}

URL.setURLStreamHandlerFactory(new MyURLStreamHandlerFactory());

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;

public class MyURLHandler extends URLStreamHandler
{

    @Override
    protected URLConnection openConnection(URL url) throws IOException
    {
        return new MyURLConnection(url);
    }

}

import java.io.*;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;

/**
 * Register a protocol handler for URLs like this: <code>myapp:///pics/sland.gif</code><br>
 */
public class MyURLConnection extends URLConnection
{

    private byte[] data;

    @Override
    public void connect() throws IOException
    {
        if (connected)
        {
            return;
        }
        loadImage();
        connected = true;
    }

    public String getHeaderField(String name)
    {
        if ("Content-Type".equalsIgnoreCase(name))
        {
            return getContentType();
        }
        else if ("Content-Length".equalsIgnoreCase(name))
        {
            return "" + getContentLength();
        }
        return null;
    }

    public String getContentType()
    {
        String fileName = getURL().getFile();
        String ext = fileName.substring(fileName.lastIndexOf('.'));
        return "image/" + ext; // TODO: switch based on file-type
    }

    public int getContentLength()
    {
        return data.length;
    }

    public long getContentLengthLong()
    {
        return data.length;
    }

    public boolean getDoInput()
    {
        return true;
    }

    public InputStream getInputStream() throws IOException
    {
        connect();
        return new ByteArrayInputStream(data);
    }

    private void loadImage() throws IOException
    {
        if (data != null)
        {
            return;
        }
        try
        {
            int timeout = this.getConnectTimeout();
            long start = System.currentTimeMillis();
            URL url = getURL();

            String imgPath = url.toExternalForm();
            imgPath = imgPath.startsWith("myapp://") ? imgPath.substring("myapp://".length()) : imgPath.substring("myapp:".length()); // attention: triple '/' is reduced to a single '/'

            // this is my own asynchronous image implementation
            // instead of this part (including the following loop) you could do your own (synchronous) loading logic
            MyImage img = MyApp.getImage(imgPath);
            do
            {
                if (img.isFailed())
                {
                    throw new IOException("Could not load image: " + getURL());
                }
                else if (!img.hasData())
                {
                    long now = System.currentTimeMillis();
                    if (now - start > timeout)
                    {
                        throw new SocketTimeoutException();
                    }
                    Thread.sleep(100);
                }
            } while (!img.hasData());
            data = img.getData();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
    }

    public OutputStream getOutputStream() throws IOException
    {
        // this might be unnecessary - the whole method can probably be omitted for our purposes
        return new ByteArrayOutputStream();
    }

    public java.security.Permission getPermission() throws IOException
    {
        return null; // we need no permissions to access this URL
    }

}

<img src="myapp:///pics/image.png"/>
MyURLConnection:

import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;

public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory
{

    public URLStreamHandler createURLStreamHandler(String protocol)
    {
        if (protocol.equals("myapp"))
        {
            return new MyURLHandler();
        }
        return null;
    }

}

URL.setURLStreamHandlerFactory(new MyURLStreamHandlerFactory());

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;

public class MyURLHandler extends URLStreamHandler
{

    @Override
    protected URLConnection openConnection(URL url) throws IOException
    {
        return new MyURLConnection(url);
    }

}

import java.io.*;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;

/**
 * Register a protocol handler for URLs like this: <code>myapp:///pics/sland.gif</code><br>
 */
public class MyURLConnection extends URLConnection
{

    private byte[] data;

    @Override
    public void connect() throws IOException
    {
        if (connected)
        {
            return;
        }
        loadImage();
        connected = true;
    }

    public String getHeaderField(String name)
    {
        if ("Content-Type".equalsIgnoreCase(name))
        {
            return getContentType();
        }
        else if ("Content-Length".equalsIgnoreCase(name))
        {
            return "" + getContentLength();
        }
        return null;
    }

    public String getContentType()
    {
        String fileName = getURL().getFile();
        String ext = fileName.substring(fileName.lastIndexOf('.'));
        return "image/" + ext; // TODO: switch based on file-type
    }

    public int getContentLength()
    {
        return data.length;
    }

    public long getContentLengthLong()
    {
        return data.length;
    }

    public boolean getDoInput()
    {
        return true;
    }

    public InputStream getInputStream() throws IOException
    {
        connect();
        return new ByteArrayInputStream(data);
    }

    private void loadImage() throws IOException
    {
        if (data != null)
        {
            return;
        }
        try
        {
            int timeout = this.getConnectTimeout();
            long start = System.currentTimeMillis();
            URL url = getURL();

            String imgPath = url.toExternalForm();
            imgPath = imgPath.startsWith("myapp://") ? imgPath.substring("myapp://".length()) : imgPath.substring("myapp:".length()); // attention: triple '/' is reduced to a single '/'

            // this is my own asynchronous image implementation
            // instead of this part (including the following loop) you could do your own (synchronous) loading logic
            MyImage img = MyApp.getImage(imgPath);
            do
            {
                if (img.isFailed())
                {
                    throw new IOException("Could not load image: " + getURL());
                }
                else if (!img.hasData())
                {
                    long now = System.currentTimeMillis();
                    if (now - start > timeout)
                    {
                        throw new SocketTimeoutException();
                    }
                    Thread.sleep(100);
                }
            } while (!img.hasData());
            data = img.getData();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
    }

    public OutputStream getOutputStream() throws IOException
    {
        // this might be unnecessary - the whole method can probably be omitted for our purposes
        return new ByteArrayOutputStream();
    }

    public java.security.Permission getPermission() throws IOException
    {
        return null; // we need no permissions to access this URL
    }

}

<img src="myapp:///pics/image.png"/>
MyURLConnection的某些部分可能不需要它，但像这样，它对我很有用

在JavaFX WebView中的用法：

import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;

public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory
{

    public URLStreamHandler createURLStreamHandler(String protocol)
    {
        if (protocol.equals("myapp"))
        {
            return new MyURLHandler();
        }
        return null;
    }

}

URL.setURLStreamHandlerFactory(new MyURLStreamHandlerFactory());

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;

public class MyURLHandler extends URLStreamHandler
{

    @Override
    protected URLConnection openConnection(URL url) throws IOException
    {
        return new MyURLConnection(url);
    }

}

import java.io.*;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;

/**
 * Register a protocol handler for URLs like this: <code>myapp:///pics/sland.gif</code><br>
 */
public class MyURLConnection extends URLConnection
{

    private byte[] data;

    @Override
    public void connect() throws IOException
    {
        if (connected)
        {
            return;
        }
        loadImage();
        connected = true;
    }

    public String getHeaderField(String name)
    {
        if ("Content-Type".equalsIgnoreCase(name))
        {
            return getContentType();
        }
        else if ("Content-Length".equalsIgnoreCase(name))
        {
            return "" + getContentLength();
        }
        return null;
    }

    public String getContentType()
    {
        String fileName = getURL().getFile();
        String ext = fileName.substring(fileName.lastIndexOf('.'));
        return "image/" + ext; // TODO: switch based on file-type
    }

    public int getContentLength()
    {
        return data.length;
    }

    public long getContentLengthLong()
    {
        return data.length;
    }

    public boolean getDoInput()
    {
        return true;
    }

    public InputStream getInputStream() throws IOException
    {
        connect();
        return new ByteArrayInputStream(data);
    }

    private void loadImage() throws IOException
    {
        if (data != null)
        {
            return;
        }
        try
        {
            int timeout = this.getConnectTimeout();
            long start = System.currentTimeMillis();
            URL url = getURL();

            String imgPath = url.toExternalForm();
            imgPath = imgPath.startsWith("myapp://") ? imgPath.substring("myapp://".length()) : imgPath.substring("myapp:".length()); // attention: triple '/' is reduced to a single '/'

            // this is my own asynchronous image implementation
            // instead of this part (including the following loop) you could do your own (synchronous) loading logic
            MyImage img = MyApp.getImage(imgPath);
            do
            {
                if (img.isFailed())
                {
                    throw new IOException("Could not load image: " + getURL());
                }
                else if (!img.hasData())
                {
                    long now = System.currentTimeMillis();
                    if (now - start > timeout)
                    {
                        throw new SocketTimeoutException();
                    }
                    Thread.sleep(100);
                }
            } while (!img.hasData());
            data = img.getData();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
    }

    public OutputStream getOutputStream() throws IOException
    {
        // this might be unnecessary - the whole method can probably be omitted for our purposes
        return new ByteArrayOutputStream();
    }

    public java.security.Permission getPermission() throws IOException
    {
        return null; // we need no permissions to access this URL
    }

}

<img src="myapp:///pics/image.png"/>
有关权限的注意事项：

import java.net.URLStreamHandler;
import java.net.URLStreamHandlerFactory;

public class MyURLStreamHandlerFactory implements URLStreamHandlerFactory
{

    public URLStreamHandler createURLStreamHandler(String protocol)
    {
        if (protocol.equals("myapp"))
        {
            return new MyURLHandler();
        }
        return null;
    }

}

URL.setURLStreamHandlerFactory(new MyURLStreamHandlerFactory());

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;

public class MyURLHandler extends URLStreamHandler
{

    @Override
    protected URLConnection openConnection(URL url) throws IOException
    {
        return new MyURLConnection(url);
    }

}

import java.io.*;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.URLConnection;

/**
 * Register a protocol handler for URLs like this: <code>myapp:///pics/sland.gif</code><br>
 */
public class MyURLConnection extends URLConnection
{

    private byte[] data;

    @Override
    public void connect() throws IOException
    {
        if (connected)
        {
            return;
        }
        loadImage();
        connected = true;
    }

    public String getHeaderField(String name)
    {
        if ("Content-Type".equalsIgnoreCase(name))
        {
            return getContentType();
        }
        else if ("Content-Length".equalsIgnoreCase(name))
        {
            return "" + getContentLength();
        }
        return null;
    }

    public String getContentType()
    {
        String fileName = getURL().getFile();
        String ext = fileName.substring(fileName.lastIndexOf('.'));
        return "image/" + ext; // TODO: switch based on file-type
    }

    public int getContentLength()
    {
        return data.length;
    }

    public long getContentLengthLong()
    {
        return data.length;
    }

    public boolean getDoInput()
    {
        return true;
    }

    public InputStream getInputStream() throws IOException
    {
        connect();
        return new ByteArrayInputStream(data);
    }

    private void loadImage() throws IOException
    {
        if (data != null)
        {
            return;
        }
        try
        {
            int timeout = this.getConnectTimeout();
            long start = System.currentTimeMillis();
            URL url = getURL();

            String imgPath = url.toExternalForm();
            imgPath = imgPath.startsWith("myapp://") ? imgPath.substring("myapp://".length()) : imgPath.substring("myapp:".length()); // attention: triple '/' is reduced to a single '/'

            // this is my own asynchronous image implementation
            // instead of this part (including the following loop) you could do your own (synchronous) loading logic
            MyImage img = MyApp.getImage(imgPath);
            do
            {
                if (img.isFailed())
                {
                    throw new IOException("Could not load image: " + getURL());
                }
                else if (!img.hasData())
                {
                    long now = System.currentTimeMillis();
                    if (now - start > timeout)
                    {
                        throw new SocketTimeoutException();
                    }
                    Thread.sleep(100);
                }
            } while (!img.hasData());
            data = img.getData();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }
    }

    public OutputStream getOutputStream() throws IOException
    {
        // this might be unnecessary - the whole method can probably be omitted for our purposes
        return new ByteArrayOutputStream();
    }

    public java.security.Permission getPermission() throws IOException
    {
        return null; // we need no permissions to access this URL
    }

}

<img src="myapp:///pics/image.png"/>
我使用了一个具有AllPermissions的小程序来测试上述代码

在沙盒中-小程序中，这将不起作用，因为缺少
设置工厂
权限。

这与所问问题没有直接关系，但可能会使问题本身过时

使用Java SE 6 Update 10 Java小程序支持访问任何域和端口上的资源，这些域和端口是使用crossdomain.xml正确设置的

因此，注册自己的协议的理由可能会过时，因为您可以访问所需的所有资源

另一个想法是：如果您试图创建一种网络嗅探器，为什么不直接使用为此类任务设计的网络嗅探器/分析器程序？

通过在Java控制面板中激活日志记录和跟踪，您的Java控制台将打印所有尝试和执行的网络调用，包括来自WebView的那些

您可以看到所有HTTP和HTTPS调用及其返回代码+cookie数据。 您可能还会看到其他协议连接，但可能不会看到通过它们发送的任何数据

这适用于浏览器中的小程序。
如果在不同的上下文中需要此选项，可能有一种方法可以通过传递命令行参数来激活相同的选项。

回答得很好。到目前为止，我发现它最符合我的需要。但我想要的是捕获所有协议。HTTP、HTTPS、file://就像我们可以在开发者控制台中看到所有请求一样。您想用它实现什么？也许网络嗅探器/分析器工具可以满足您的需要。另一个可能有用的方法是使用FirebugLite:
-将此代码嵌入您的WebView页面，您可以在WebView中调试该页面。不幸的是，FBLite没有network-tab。要捕获所有协议，只需调整
createURLStreamHandler
方法以始终返回处理程序。但问题是你怎么处理它？是否仍要执行该请求？还是仅仅抓住它？我猜你还是想执行它。因此，问题可能是要找出如何为您拦截的每个协议执行此操作。也许有一种方法可以获取每个工厂的原始默认工厂并将其委派给其他工厂。然后简单地包装原始URLConnection来截取数据。我只想捕获所有请求。不想使用其他插件，如selenium或手动操作。在android中拦截所有请求非常容易，但我需要java。