运用类反射机制简化Struts应用程序开发

来源： 2017-12-23 15:13中

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1、先定义Action FormBean:

package com.bhsky.webis.system;import org.apache.struts.action.*;import javax.servlet.http.*; public class UsersActionForm extends ActionForm {private String usr_id;private String usr_name;public void setUsr_id(String usr_id) { this.usr_id = usr_id;}public String getUsr_id() { return usr_id;}public String getUsr_memo() { return usr_memo;}public void setUsr_name(String usr_name) { this.usr_name = usr_name;}}

2、编写通用的为ActionFormBean赋值的方法：

//Function: 完成ResultSet对象向ArrayList对象为集合的对象的转化 //Para:sql,指定的查询Sql //Para:className,Sql相对应得JavaBean/FormBean类的名字 //Return:以类className为一条记录的结果集， //完成ResultSet对象向ArrayList对象为集合的className对象的转化 public ArrayList Select(String sql,String className){ ArrayList paraList=new ArrayList(); try{ if (conn == null){ Connection(); } PreparedStatement stmt = conn.prepareStatement(sql); ResultSet rs = stmt.executeQuery(); String recordValue=""; Object c1=null; paraList=new ArrayList(); ResultSetMetaData rsmd = rs.getMetaData(); int columnCount = rsmd.getColumnCount(); while (rs.next()){ c1=Class.forName(className).newInstance(); for (int i=1; i

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