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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=17316 taglib always returns null in first reocrd with pageContext.setAttribute Summary: taglib always returns null in first reocrd with pageContext.setAttribute Product: Tomcat 4 Version: 4.1.8 Platform: PC OS/Version: Windows XP Status: UNCONFIRMED Severity: Normal Priority: Other Component: Jasper AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] /* the codes work well under tomcat 4.0, but in 4.1.18 (I use now), the function pageContext.setAttribute in the doStartTag always return null to the jsp page. but the pageContext.setAttribute in the doAfterBody works, so I get the first record null, and the others well. */ // file: Region.java package ttt; import javax.servlet.jsp.*; import javax.servlet.jsp.tagext.*; public class Region extends BodyTagSupport { private java.sql.ResultSet rs = null; public int doStartTag() throws JspException { int retVal = SKIP_BODY; try { DBO db = (DBO) pageContext.findAttribute("db"); //my connection pool String sql = "select * from region"; this.rs = db.select(sql); if (this.rs.next()) { pageContext.setAttribute("id", this.rs.getString("id")); //*** pageContext.setAttribute("name", this.rs.getString("name")); //*** /* i'd checked the return from the database with: pageContext.getOut().print("Hello."+this.rs.getString("name")); it works properly. */ retVal = EVAL_BODY_INCLUDE; } } catch (java.sql.SQLException ignored) {} return retVal; } public int doAfterBody() throws JspException { int retVal = SKIP_BODY; try { if (this.rs.next()) { pageContext.setAttribute("id", this.rs.getString("id")); pageContext.setAttribute("name", this.rs.getString("name")); retVal = EVAL_BODY_AGAIN; } } catch (java.sql.SQLException ignored) {} return retVal; } } // file RegionEx.java /* anothe problem in extrainfo: Cannot return the type exclude the "String", the following codes can be complied, but will cause a "can not complie the jsp exception" when i run the jsp file: String type = data.getAttributeString("type"); if (type == null) type = "java.lang.Object"; return new VariableInfo[] { new VariableInfo(data.getAttributeString("id"), type, true, VariableInfo.NESTED), new VariableInfo(data.getAttributeString("name"), type, true, VariableInfo.NESTED) }; so, have to return "String" for all the data type? */ package ttt; import javax.servlet.jsp.tagext.*; public class RegionEx extends TagExtraInfo { public VariableInfo[] getVariableInfo(TagData data) { return new VariableInfo[] { new VariableInfo("id", "String", true, VariableInfo.NESTED), new VariableInfo("name", "String", true, VariableInfo.NESTED), }; } } //the jsp page. <table> <ttt:region> <tr><td><%= name %></td><td><%= id %></td></tr> </ttt:region> </table> // the tld file <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd";> <taglib> <tlib-version>1.2</tlib-version> <jsp-version>1.2</jsp-version> <short-name>ttt</short-name> <tag> <name>region</name> <tag-class>ttt.Region</tag-class> <tei-class>ttt.RegionEx</tei-class> <body-content>JSP</body-content> </tag> </taglib> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
