package org.burning.sport.design.pattern.factorypattern.spring.factory;

public interface SignService {

    /**

     * 获取签名的工具

     * @return

     */

    EnumSign getSignTool();

    /**

     * 签名

     * @param name 用户姓名

     */

    void write(String name);

}

package org.burning.sport.design.pattern.factorypattern.spring.factory;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

public abstract class AbstractSignService implements SignService {

    /**

     * 把内容写入到文件中

     * @param content 内容

     */

    public void writeFileContent(String content) {

        File file = new File("d:/test.txt");

        FileOutputStream fos = null;

        try {

            if(file.exists()) {

                file.delete();

            }

            fos = new FileOutputStream(file);

            fos.write(content.getBytes());

        } catch (Exception e) {

            e.printStackTrace();

        } finally {

            try {

                fos.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

    }

}

package org.burning.sport.design.pattern.factorypattern.spring.factory.impl;

import org.burning.sport.design.pattern.factorypattern.spring.factory.AbstractSignService;

import org.burning.sport.design.pattern.factorypattern.spring.factory.EnumSign;

import org.springframework.stereotype.Component;

@Component

public class BrushPenSignServiceImpl extends AbstractSignService {

    @Override

    public EnumSign getSignTool() {

        return EnumSign.BRUSH_PEN;

    }

    @Override

    public void write(String name) {

        String content = "大家好，我是" + name + "，现在在用毛笔签名";

        writeFileContent(content);

    }

}

package org.burning.sport.design.pattern.factorypattern.spring.factory.impl;

import org.burning.sport.design.pattern.factorypattern.spring.factory.AbstractSignService;

import org.burning.sport.design.pattern.factorypattern.spring.factory.EnumSign;

import org.springframework.stereotype.Component;

@Component

public class PencilSignServiceImpl extends AbstractSignService {

    @Override

    public EnumSign getSignTool() {

        return EnumSign.PENCIL;

    }

    @Override

    public void write(String name) {

        String content = "大家好，我是" + name + "，现在在用铅笔签名";

        writeFileContent(content);

    }

}

package org.burning.sport.design.pattern.factorypattern.spring.factory.impl;

import org.burning.sport.design.pattern.factorypattern.spring.factory.AbstractSignService;

import org.burning.sport.design.pattern.factorypattern.spring.factory.EnumSign;

import org.springframework.stereotype.Component;

@Component

public class PenSignServiceImpl extends AbstractSignService {

    @Override

    public EnumSign getSignTool() {

        return EnumSign.PEN;

    }

    @Override

    public void write(String name) {

        String content = "大家好，我是" + name + "现在在用钢笔签名";

        writeFileContent(content);

    }

}

package org.burning.sport.design.pattern.factorypattern.spring.factory;

import org.springframework.beans.BeansException;

import org.springframework.beans.factory.InitializingBean;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.stereotype.Component;

import java.util.HashMap;

import java.util.Map;

@Component

public class SignServiceFactory implements ApplicationContextAware, InitializingBean {

    private ApplicationContext applicationContext;

    private static Map<EnumSign, SignService> map = new HashMap<>();

    public SignService getInstance(EnumSign enumSign) {

        return map.get(enumSign);

    }

    @Override

    public void afterPropertiesSet() throws Exception {

        Map<String, SignService> beansOfType = applicationContext.getBeansOfType(SignService.class);

        for(Map.Entry<String, SignService> entry : beansOfType.entrySet()) {

            map.put(entry.getValue().getSignTool(), entry.getValue());

        }

    }

    @Override

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

        this.applicationContext = applicationContext;

    }

}

package org.burning.sport.design.pattern.factorypattern.spring.factory;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class ClientTest {

    public static void main(String[] args) {

        ApplicationContext apx = new ClassPathXmlApplicationContext("applicationContext.xml");

        SignServiceFactory signServiceFactory = apx.getBean("signServiceFactory", SignServiceFactory.class);

        SignService signService = signServiceFactory.getInstance(EnumSign.PEN);

        signService.write("红孩儿");

    }

}