testtag.java

EOSUserGuide项目 EOSUserGuide项目 EOSUserGuide项目 EOSUserGuide项目

package com.primeton.jsptag;

/** EOS Tag Java File **/

import java.sql.Connection;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;

import com.primeton.eos.webtag.util.ResponseUtils;
import com.primeton.tp.core.bizservice.EOSParameter;
import com.primeton.tp.core.config.EOSAppConfiguration;
import com.primeton.tp.core.prservice.context.RequestContext;
import com.primeton.tp.core.prservice.context.SessionContext;
import com.primeton.tp.web.driver.webdriver.WebDriver;

public class TestTag extends TagSupport {

	private String id;

	public String getId() {
		return id;
	}

	public void setId(String value) {
		this.id = value;
	}

	public int doStartTag() throws JspException {
		// 如何获取RequestContext数据总线
		String requestId = WebDriver.REQUEST_REQUEST_CONTEXT;
		RequestContext requestContext = (RequestContext) pageContext
				.getAttribute(requestId);
		if (requestContext == null)
			requestContext = (RequestContext) (pageContext.getRequest()
					.getAttribute(requestId));
		if (requestContext == null)
			requestContext = (RequestContext) (pageContext.getSession()
					.getAttribute(requestId));

		if (requestContext == null)
			return (SKIP_BODY);

		// 获取总线上的值
		requestContext.getEntityValue("hellostring");

		// 获取SessionContext数据总线
		String sessionId = WebDriver.SESSION_CONTEXT;
		SessionContext sessionContext = (SessionContext) pageContext
				.getAttribute(sessionId);
		if (sessionContext == null)
			sessionContext = (SessionContext) (pageContext.getRequest()
					.getAttribute(sessionId));
		if (sessionContext == null)
			sessionContext = (SessionContext) (pageContext.getSession()
					.getAttribute(sessionId));
		// 获取总线上的值
		sessionContext.getEntityValue("hellostring");

		// 获取EOSServer上配置的数据库联接
		EOSParameter param = new EOSParameter();
		param.setAppID(EOSAppConfiguration.getDefaultAppID());
		param.setUnitName("EOSStudy");
		param.setUnitId("0");
		try {
			Connection conn = param.getDBBroker().getConnection();
		} catch (Exception e) {
			e.printStackTrace();
		}
		// 使用ResponseUtils往页面上写数据
		ResponseUtils.write(pageContext, "what you input is : " + id);

		return super.doStartTag();
	}

	public int doEndTag() throws JspException {
		// TODO Add your code here.
		return super.doEndTag();
	}
}