arrameaction.java

此资源是jsp应用开发 邓子云等编写的一书里的源代码

package action;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;

/**
 * @author dengziyun
 * 审批Action类
 */
public class arraMeAction extends Action{
	
	/**
	 * 在此方法中处理HTTP请求，并作响应
	 */
	public ActionForward execute(ActionMapping arg0, ActionForm arg1,
			HttpServletRequest request, HttpServletResponse reponse) throws Exception {
		ActionErrors errors=new ActionErrors();
		//------接收请求参数------
		String thingArraId=request.getParameter("thingArraId");
	  	String thingId=request.getParameter("thingId");
	  	String content=request.getParameter("thingContent");
		//------构造将数据插入到数据库的SQL语句-----
	  	String sqlStr=new String("update thingArra set thingArraEnd=?"
	  	  		+" where thingArraId=?");
	  	//------查询出数据，将查询结果数据集写入到response中------
	  	try{
			//------得到数据库连接------
			Context initCtx = new InitialContext(); 
			Context ctx = (Context) initCtx.lookup("java:comp/env");
			Object obj = (Object) ctx.lookup("jdbc/sqlserver");
			DataSource ds = (javax.sql.DataSource)obj;
			Connection conn = ds.getConnection();
			//------将数据更新到数据库------
		  	PreparedStatement preSQLupdate=conn.prepareStatement(sqlStr);
		  	content=new String(content.getBytes("ISO-8859-1"));
		  	preSQLupdate.setString(1,content);
		  	preSQLupdate.setString(2,thingArraId);
		  	preSQLupdate.executeUpdate();
		  	//------关闭数据库连接------
		  	if(conn!=null)
		  		conn.close();
		}catch(Exception e){
			e.printStackTrace();
			errors.add("DBOPError",new ActionMessage("DBOPError"));
			saveErrors(request,errors);
		}
		arg1.reset(arg0,request);
		return arg0.findForward("arraMeSuccessJSP");
	}
}