displaybusinesstag.java

一个关于tlms的一个小程序 看看能否帮助到别人

package com.szmx.tlms.admin.web.tag;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.lang.StringUtils;
import org.displaytag.tags.el.ExpressionEvaluator;

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

import com.szmx.framework.util.StringUtil;
import com.szmx.framework.spring.context.ApplicationContextUtil;
import com.szmx.tlms.admin.service.ClientBusinessRelationService;
import com.szmx.tlms.TlmsServiceException;

import java.util.List;

/**
 * Created by IntelliJ IDEA.
 * User: Administrator
 * Date: 2006-8-2
 * Time: 9:20:04
 * To change this template use File | Settings | File Templates.
 */
public class DisplayBusinessTag extends TagSupport {
    protected final Log log = LogFactory.getLog(getClass());
    private String clientID;

    public String getClientID() {
        return clientID;
    }

    public void setClientID(String clientID) {
        this.clientID = clientID;
    }

    public int doStartTag() throws JspException {
        JspWriter out = pageContext.getOut();
        ExpressionEvaluator eval = new ExpressionEvaluator(this, pageContext);
        this.clientID = eval.evalString("clientID", this.clientID);

        try {
            if (StringUtil.isNull(clientID)) {
                out.println("");
            }

            //display the role name according to the company id
            ClientBusinessRelationService service = (ClientBusinessRelationService) ApplicationContextUtil.getBean("clientBusinessRelationService");
            if (service != null && StringUtils.isNumeric(this.clientID)) {
                List businessList = service.searchSelectedBusiness(Long.valueOf(this.clientID));
                if (businessList != null && businessList.size() > 0) {
                    String businessName = "";
                    for (int i = 0; i < businessList.size(); i++) {
                        businessName += ((Object[]) businessList.get(i))[2];
                        if (businessList.size() - 1 != i) {
                            businessName += ", ";
                        }
                    }
                    out.println(businessName);
                }

            }
            out.println("");
        } catch (TlmsServiceException e) {
            log.error("TlmsServiceException", e);
        } catch (Exception e) {
            log.error("Exception", e);
        }

        return super.doStartTag();
    }
}