jfinal使用druidPlugin插件，绑定表，实体中@TableBind注?400报错

1.configPlugin

DruidPlugin druidPlugin = new DruidPlugin(getProperty("jdbcUrl"), getProperty("user"), getProperty("password"));
        druidPlugin.setFilters("stat,log4j");  
        me.add(druidPlugin); 
        me.add(new EhCachePlugin());
        // 配置ActiveRecord插件
        AutoTableBindPlugin arp = new AutoTableBindPlugin(druidPlugin,TableNameStyle.LOWER);//table是实体的小写
        me.add(arp);
        arp.setShowSql(true);

2.实体类

@TableBind(tableName="table")
public class table extends Model<table>{

   private static final long serialVersionUID = 1L;
   public static String tableName = "table";
   public static final AdminUser table = new table();
   
   public AdminUser getByName(String username){
      return dao.findFirst("select * from table where username=" + username);
   }

3.报错：

  java.lang.NullPointerException
    at com.jfinal.plugin.activerecord.Model.find(Model.java:529)
    at com.jfinal.plugin.activerecord.Model.findFrist(Model.java:546)