怎么实现让外部系统调用普元开发的系统的页面

Posted 2023-03-14

参考技术A // 定义接口import java.io.FileOutputStream;public interface OperateFile // 导入文件 public boolean importFile(String path,String name); // 导出文件 public FileOutputStream exportFile(String path);//..........................................// 实现子类import java.io.FileOutputStream;public class OperateFileImp implements OperateFile public boolean importFile(String path, String name) // File file = new File(path,name).... // 在此实现方法，作业嘛… return false; public FileOutputStream exportFile(String path) //........ return null; //...................................//..给外部提供接口....public class Factory private static OperateFile op = null; public static final int OPERATE_FILE= 1001; private Factory() // 实现给外部的接口调用 public OperateFile getInstance(int classType) if(classType==1001) op = new OperateFileImp(); return op; else throw new RuntimeException("要产生的子类没有定义!");