producttag.java

(Java+SQL)-大型企业JAVA的ERP系统

package tld;

import javax.servlet.jsp.JspException;
import java.io.IOException;
import src.wuyang.*;

public class ProductTag extends javax.servlet.jsp.tagext.TagSupport{

String showType = "select"; // 缺省是select, 也可是table;

public void setShowType(String aShowType) {
	showType = aShowType.toLowerCase(); // 变为小写
}

/**
* Executes when the tag is started.
*/
public int doStartTag() throws JspException {
	return SKIP_BODY;
}

/**
* Executed with the end tag.
*/
public int doEndTag() throws JspException {
	try {
		//pageContext.getOut().print("<h2>Hello from doStartTag()</h2>");
		// Allowtext in the body of the tag
		Production production = new Production();
		production.query("","");
		while(production.next()== 1 ) {
			if(showType.equals("select")){
				pageContext.getOut().print("<option value=\"" + production.getProductId() + "\"> " + production.getProductName() + "</option>");
			} else if(showType.equals("table")){
				pageContext.getOut().print("<tr><td><a href=\" /wuyang/servlet/ProductionSvlt?mode=load&objectId= " + production.getProductId() + " \">" + production.getProductName() + "</a></td></tr>");
			}
		}
		return EVAL_BODY_INCLUDE;
	} catch (IOException e){
		throw new javax.servlet.jsp.JspException(e.getMessage());
	}
}

}