?? resultcolumntag.java
字號:
package cn.com.syntc.common.taglib;
import javax.servlet.jsp.tagext.TagSupport;
import javax.servlet.jsp.JspException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import cn.com.syntc.common.type.ResultSet;
public class ResultColumnTag extends TagSupport {
// DEBUG FLAG
private final static boolean DEBUG = false;
private String column = "";
private ResultSet resultset = null;
public void setColumn(String column) {
this.column = column;
}
public int doStartTag() {
try{
ResultHeaderTag resultHeaderTag = (ResultHeaderTag)this.findAncestorWithClass(this, Class.forName("cn.com.syntc.common.taglib.ResultHeaderTag"));
if (resultHeaderTag != null) {
resultset = resultHeaderTag.resultset;
}
}
catch(Exception ex){
System.out.println("error:"+ex.getMessage());
}
return SKIP_BODY;
}
public int doEndTag () {
try {
if (column != null) {
String columnName = column;
if(columnName.toUpperCase().equals("ROWID"))
{
pageContext.getOut().print(resultset.currentWatchRowNumber);
}
else
{
String columnValue = resultset.getString(column);
if(DEBUG){
System.out.println("字段名:" + columnName + " 字段值:" + columnValue);
}
pageContext.getOut().print(columnValue);
}
}
} catch (Exception ex) {
System.out.println("error:"+ex.getMessage());
}
return EVAL_PAGE;
}
}
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