myeclipse如何做到输入项目名称就能进入网站首页

有没有大神知道这里是配置了什么东西嘛？
IndexAction里的index()方法就是进入首页的方法，可是这是怎么实现的，只输入项目名称就能进首页？求解答！！

// 网站首页
public String index() throws Exception {

    HttpServletRequest request = this.getRequest();
    String pname = request.getParameter("pname");
    String fenleiid = request.getParameter("fenleiid");
    String tuijian = request.getParameter("tuijian");
    String type = request.getParameter("type"); 
    StringBuffer sb = new StringBuffer();
    sb.append(" where ");

    if (pname != null && !"".equals(pname)) {
        sb.append("pname like '%" + pname + "%'");
        sb.append(" and ");
    }

    if (fenleiid != null && !"".equals(fenleiid)) {
        sb.append("fenleiid =" + fenleiid + "");
        sb.append(" and ");
    }

    if ("1".equals(tuijian)) {
        sb.append("tuijian ='推荐'");
        sb.append(" and ");
    }

    String where = "";

    int total = 0;

    if("1".equals(type)){
        sb.append("   productdelete=0 order by id desc ");      
        where = sb.toString();      
        total = productDao.selectBeanCount(where.replaceAll("order by id desc", ""));       
    }

    else if("2".equals(type)){
        sb.append("   productdelete=0 order by dianji desc ");
        where = sb.toString();
        total = productDao.selectBeanCount(where.replaceAll("order by dianji desc", ""));
    }

    else if("3".equals(type)){
        sb.append("   productdelete=0 order by xiaoliang desc ");
        where = sb.toString();
        total = productDao.selectBeanCount(where.replaceAll("order by xiaoliang desc", ""));
    }

    else{
        sb.append("   productdelete=0 order by id desc ");
        where = sb.toString();
        total = productDao.selectBeanCount(where.replaceAll("order by id desc", ""));
    }

    int currentpage = 1;

    int pagesize = 15;

    if (request.getParameter("pagenum") != null) {
        currentpage = Integer.parseInt(request.getParameter("pagenum"));
    }

    request.setAttribute("productlist", productDao.selectBeanList((currentpage - 1)* pagesize, pagesize, where));

    request.setAttribute("pagerinfo", Pager.getPagerNormal(total, pagesize,currentpage, ".", "共有" + total + "条记录"));  

    return "success";

}

 web.xml中加入
 <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>

在web.xml里找到如果有，把此标签所以有内容改成一下形式，若没有，则添加以下形式即可

login.jsp

  <welcome-file-list>
    <welcome-file>login.jsp</welcome-file>
  </welcome-file-list>