Bookdao
public class BookDao extends JsonBaseDao{ //分页查询书本信息 //根据书本id查询当个书本信息 public List<Map<String, Object>> queryBook(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{ //String sql="SELECT * FROM t_book"; String sql="select * from t_mvc_book where true"; String bname=JsonUtils.getParamVal(paMap, "bname"); if(StringUtils.isNotBlank(bname)) { sql+=" and bname like '%"+bname+"%'"; } return super.executeQuery(sql, pageBean); } //新增书本信息 public int addBook (Map<String, String[]> paMap,PageBean pageBean) throws Exception, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException{ String sql="insert into t_mvc_book(bname,price) values(?,?)"; return super.executeUpdate(sql, new String[] {"bname","price"}, paMap); } //修改书本信息 public int editBook (Map<String, String[]> paMap,PageBean pageBean) throws Exception, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException{ String sql="update t_mvc_book set bname=?,price=? where bid=?"; return super.executeUpdate(sql, new String[] {"bname","price","bid"}, paMap); } //新增书本信息 public int delBook (Map<String, String[]>paMap,PageBean pageBean) throws Exception, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException{ String sql="delete from t_mvc_book where bid=?"; return super.executeUpdate(sql, new String[] {"bid"}, paMap); } public List<Map<String, Object>> book(Map<String, String[]>paMap,PageBean pageBean) throws Exception, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException{ String bid=JsonUtils.getParamVal(paMap, "bid"); if(StringUtils.isNotBlank(bid)) { String sql="select * from t_mvc_book where bid="+bid; return executeQuery(sql, pageBean); } else { return null; } } }
BookAction
public class BookAction extends BaseAction{ private BookDao bookDao=new BookDao(); private PageBean pageBean; private String type; public String getType() { return type; } public void setType(String type) { this.type = type; } //新增书本 public String addBook() throws Exception, Exception { bookDao.addBook(request.getParameterMap(), null); return "success"; } //修改书本 public String editBook() throws Exception, Exception { bookDao.editBook(request.getParameterMap(), null); return "success"; } //删除书本 public String delBook() throws Exception, Exception { bookDao.delBook(request.getParameterMap(), null); return "success"; } //查询当个 public String book() throws Exception, Exception { List<Map<String, Object>> book =bookDao.queryBook(request.getParameterMap(), null); Map<String, Object> map = book.get(0); request.setAttribute("book", map); if("edit".equals(type)) { return "edit"; } else { return "detail"; } } public String queryBook() throws Exception, Exception { pageBean=new PageBean(); pageBean.setRequest(request); List<Map<String, Object>> queryBook = bookDao.queryBook(request.getParameterMap(), pageBean); Map<String, Object> result=new HashMap<>(); result.put("queryBook",queryBook); result.put("pageBean", pageBean); request.setAttribute("result", result); return "list"; } }
BaseAction
public abstract class BaseAction implements ServletResponseAware,ServletRequestAware{ protected HttpServletResponse response; protected HttpServletRequest request; protected HttpSession session; protected ServletContext application; @Override public void setServletRequest(HttpServletRequest request) { // TODO Auto-generated method stub this.request=request; this.session=request.getSession(); this.application= request.getServletContext(); } @Override public void setServletResponse(HttpServletResponse response) { // TODO Auto-generated method stub this.response=response; } }
book实体
public class Book implements Serializable{ private Integer bid; private String bname; private Float price; public Integer getBid() { return bid; } public void setBid(Integer bid) { this.bid = bid; } public String getBname() { return bname; } public void setBname(String bname) { this.bname = bname; } public Float getPrice() { return price; } public void setPrice(Float price) { this.price = price; } @Override public String toString() { return "Book [bid=" + bid + ", bname=" + bname + ", price=" + price + "]"; } }
分页助手类
public class PageTag extends BodyTagSupport { private PageBean bean; public PageBean getBean() { return bean; } public void setBean(PageBean bean) { this.bean = bean; } @Override public int doStartTag() throws JspException { JspWriter out= pageContext.getOut(); try { out.print(tohtml()); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return super.doStartTag(); } private String tohtml() { StringBuilder sb=new StringBuilder(); //拼接下一次发送请求所要提交的隐藏的form表单 sb.append("<form id='pageBeanForm' action='"+bean.getUrl()+"' method='post'>"); sb.append(" <input type='hidden' name='page'>"); Map<String, String[]> paMap = bean.getParameterMap(); if(paMap!=null&&paMap.size()>0) { Set<Entry<String, String[]>> entrySet = paMap.entrySet(); for (Entry<String, String[]> entry : entrySet) { //上一次请求可能携带页面name=page的参数，但是改参数在前面已经单独赋值 //为什么要单独赋值呢？因为上一次请求是第一页的数据，下一次可能是第二页，因为这前后请求page对应的值是不一样的，要单独赋值 if(!"page".equals(entry.getKey())) { for(String val:entry.getValue()) { sb.append("<input type='hidden' name='"+entry.getKey()+"' value='"+val+"'>"); } } } } sb.append(" </form>"); //拼接分页条 sb.append("<div style='text-align: right; font-size: 12px;'>"); sb.append(" 每页"+bean.getRows()+"条，共"+bean.getTotal()+"条，第"+bean.getPage()+"页，共"+bean.getMaxPage()+"页 <a href='javascript:gotoPage(1)'>首页"); sb.append(" </a> <a"); sb.append(" href='javascript:gotoPage("+bean.previousPage()+")'>上一页</a> <a"); sb.append(" href='javascript:gotoPage("+bean.nextPage() +")'>下一页</a> <a"); sb.append(" href='javascript:gotoPage("+bean.getMaxPage()+")'>尾页</a> <input type='text'"); sb.append(" id='skipPage'"); sb.append(" style='text-align: center; font-size: 12px; 50px;'> <a"); sb.append(" href='javascript:skipPage()'>Go</a>"); sb.append(" </div>"); //拼接所需要的js代码 sb.append(" <script type='text/javascript'>"); sb.append(" function gotoPage(page) {"); sb.append(" document.getElementById('pageBeanForm').page.value = page;"); sb.append(" document.getElementById('pageBeanForm').submit();"); sb.append(" }"); sb.append(" function skipPage() {"); sb.append(" var page = document.getElementById('skipPage').value;"); sb.append(" if(!page || isNaN(page) || parseInt(page)<1 || parseInt(page)>"+bean.getMaxPage()+"){"); sb.append(" alert('请输入1~N的数字');"); sb.append(" return;"); sb.append(" }"); sb.append(" gotoPage(page);"); sb.append("}"); sb.append("</script>"); return sb.toString(); } }
struts-book.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN" "http://struts.apache.org/dtds/struts-2.5.dtd"> <struts> <package name="struts-book" extends="struts-base"> <action name="bookAction_*" class="com.hmc.struts2_03.action.BookAction" method="{1}"> <result name="success" type="redirect"> /bookAction_queryBook.action </result> <result name="list" type="dispatcher"> /bookList.jsp </result> <result name="edit" > /bookEdit.jsp </result> <result name="detail" > /bookDetail.jsp </result> </action> </package> </struts>
创建jsp页面进行测试
新增
结果
修改
修改圣墟为斗神
结果
删除斗神
模糊查询（不死不灭）
