Question

我有一个基于纳米HTTP的网络服务器，应该将其调用委托给球衣2.22.2。在webserver类构造函数中，我将ApplicationHandler声明为实例变量：

import java.applet.Applet.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Option3 extends Frame implements ActionListener {

    Button objButton1;
    Button objButton2;
    Button objButton3;
    TextField objTextField;

    Option3() {
        setTitle("Option 3");
        setSize (300,300); // is better to control the frame's size by using panels with appropriate layout managers.

        objButton1 = new Button("A");
        objButton2 = new Button("B");
        objButton3 = new Button("C");
        objTextField = new TextField(100);

        objButton1.addActionListener(this);
        objButton2.addActionListener(this);
        objButton3.addActionListener(this);

        Panel panel = new Panel(); // set a layout to this panel based on how you want the components to be displayed.
        panel.add(objButton1);
        panel.add(objButton2);
        panel.add(objButton3);
        panel.add(objTextField);

        add(panel);

        show();
    }
    public static void main (String args[]) {
        Frame objFrame = new Option3();

    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == objButton1 ) { //delimit this kind of statements using curly braces to avoid confusion and bugs.
            System.out.println("A");
        } else if (e.getSource() == objButton2 ) {
            System.out.println("B");
        } else {
            System.out.println("C");    
        }
    }
}

然后在构造函数中，我初始化它并注册一个Sample资源类：

    ApplicationHandler newHandler;

在处理Http请求的方法上，我创建了一个ContainerRequest并在应用程序处理程序上执行apply方法：

    Object[] instances = new Object[1];
    instances[0] = new SampleResource();

    ResourceConfig app = new ResourceConfig();
    app.registerInstances(instances);
    newHandler = new ApplicationHandler(app);

以下是SampleResource类的代码：

                SecurityContext secContext = new SecurityContext() {
                @Override
                public Principal getUserPrincipal() {
                    return new Principal() {
                        @Override
                        public String getName() {
                            return "user";
                        }
                    };
                }

                @Override
                public boolean isUserInRole(String s) {
                    return true;
                }

                @Override
                public boolean isSecure() {
                    return true;
                }

                @Override
                public String getAuthenticationScheme() {
                    return null;
                }
            };
            PropertiesDelegate propertiesDelegate = new PropertiesDelegate() {

                Map<String, Object> props = new HashMap<>();
                @Override
                public Object getProperty(String s) {
                    return props.get(s);
                }

                @Override
                public Collection<String> getPropertyNames() {
                    return props.keySet();
                }

                @Override
                public void setProperty(String s, Object o) {
                    props.put(s, o);
                }

                @Override
                public void removeProperty(String s) {
                    props.remove(s);
                }
            };
            ContainerRequest request = new ContainerRequest(new URI("http://localhost:2000"), new URI("/test"), session.getMethod().toString(), secContext, propertiesDelegate);
            Future<ContainerResponse> responseFuture = newHandler.apply(request);
            ContainerResponse response = responseFuture.get();
            Object entity = response.getEntity();

}

这样做的主要原因是我想调用一个自定义API，将对象注入带注释的资源类中。单步执行代码，我得到的只是一个NotFoundException。

Answer 1

如果要将自定义对象注入资源类，可以在两个waus中执行此操作

使用@Context - 将自定义对象添加到应用程序上下文
usign @Inject - 通过将应用程序绑定到资源配置

要使用@Context，您需要扩展java.security.Principal对象并声明对象字段，并且可以使用安全上下文来实例化和分配值。
用户@InJect，您需要注册org.glassfish.hk2.utilities.binding.AbstractBinder，如下所示

returnTo

}

将HTTP请求委托给Jersey

1 个答案: