springboot 自定义权限标签(tld),在freemarker引用操作

    <dependency>
      <groupid>javax.servlet.jsp</groupid>
      <artifactid>jsp-api</artifactid>
      <version>2.2.1-b03</version>
    </dependency> 

import java.util.map;
import java.util.set;
import javax.servlet.http.httpservletrequest;

import org.jasig.cas.client.authentication.attributeprincipal;
import org.springframework.web.servlet.tags.requestcontextawaretag;

import com.goodidea.sso.dto.privilegesdto;
import com.goodidea.sso.dto.resourcesdto;
import com.goodidea.sso.service.privilegesservice;

/**
 * 
* @classname: privilegetag 
* @description: 权限标签类 
* @author lsg
* @date 2017年9月12日 下午5:36:01 
*
 */
public class privilegetag extends requestcontextawaretag{


  private static final long serialversionuid = 534416848523276042l;

  private string menualias;

  private string prialias;

  public string getmenualias() {
    return menualias;
  }

  public void setmenualias(string menualias) {
    this.menualias = menualias;
  }


  public string getprialias() {
    return prialias;
  }

  public void setprialias(string prialias) {
    this.prialias = prialias;
  }

  @override
  protected int dostarttaginternal() {
    // todo auto-generated method stub
    boolean result = false;
     try {
      httpservletrequest request = (httpservletrequest) pagecontext.getrequest();
       attributeprincipal principal = (attributeprincipal)request.getuserprincipal();
       map<string, object> attributes = principal.getattributes();
      string username=(string) attributes.get("username");
      privilegesservice privilegesservice= (privilegesservice)this.getrequestcontext().getwebapplicationcontext().getbean("privilegesserviceimpl");
      set<resourcesdto> dto = privilegesservice.findresourcesbyusername(username);
      for (resourcesdto resourcesdto : dto) {
        if(this.menualias.equals(resourcesdto.getalias())){
          for (privilegesdto pdto : resourcesdto.getprivileges()) {
            if(this.prialias.equals(pdto.getalias())){
               result = true;
            }
          }
        }
      }
     } catch (exception e) {
      // todo auto-generated catch block
      e.printstacktrace();
      result =false;
    }
    return result? eval_body_include : skip_body;
  }
}

<?xml version="1.0" encoding="utf-8"?>
<!doctype taglib public "-//sun microsystems, inc.//dtd jsp tag library 1.1//en" "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
<taglib>
  <tlibversion>1.0</tlibversion>
  <jspversion>1.1</jspversion>
  <shortname>privilege</shortname>
  <tag>
    <name>privilege</name>
    <tagclass>com.goodidea.sso.core.privilegetag</tagclass>
    <bodycontent>empty</bodycontent> <!--这里如果设为empty,则无body-->
    <attribute>
      <name>menualias</name>
      <required>true</required>
      <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
      <name>prialias</name>
      <required>true</required>
      <rtexprvalue>true</rtexprvalue>
    </attribute>
  </tag>
</taglib>

<dependency>
 <groupid>net.mingsoft</groupid>
 <artifactid>shiro-freemarker-tags</artifactid>
 <version>0.1</version>
</dependency>

@bean
public freemarkerconfigurer freemarkerconfigurer() throws ioexception, templateexception {
  freemarkerconfigurer freemarkerconfigurer = new freemarkerconfigurer();
  freemarkerconfigurer.settemplateloaderpath("classpath:templates/");
  freemarker.template.configuration configuration = freemarkerconfigurer.createconfiguration();
  configuration.setdefaultencoding("utf-8");
  //这里可以添加其他共享变量 比如sso登录地址
  configuration.setsharedvariable("shiro", new shirotags());
  freemarkerconfigurer.setconfiguration(configuration);
  return freemarkerconfigurer;
}