displayroletag.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 com.szmx.tlms.admin.service.AdminService;
import com.szmx.tlms.TlmsServiceException;
import com.szmx.framework.spring.context.ApplicationContextUtil;
import com.szmx.framework.util.StringUtil;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.displaytag.tags.el.ExpressionEvaluator;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;
import java.util.List;

public class DisplayRoleTag extends TagSupport {
    protected final Log log = LogFactory.getLog(getClass());
    private String userId;

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

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

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

            //display the role name according to the company id
            AdminService service = (AdminService) ApplicationContextUtil.getBean("adminService");
            if (service != null && StringUtils.isNumeric(this.userId)) {
                List roleList = service.searchAssignedRoles(Long.valueOf(this.userId));
                if (roleList != null && roleList.size() > 0) {
                    String roleName = "";
                    for (int i = 0; i < roleList.size(); i++) {
                        roleName += ((Object[]) roleList.get(i))[0];
                        if (roleList.size() - 1 != i) {
                            roleName += ", ";
                        }
                    }
                    out.println(roleName);
                }

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

        return super.doStartTag();
    }
}