SSH前后端数据交互

来源：互联网发布：12306泄露数据库网盘编辑：程序博客网时间：2024/04/29 01:44

jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>sss<%@ taglib prefix="s" uri="/struts-tags" %><html>  <head>    <title>My JSP 'index.jsp' starting page</title>  </head>  <body>   <s:form action="role_editUI">   <s:hidden name="id"></s:hidden>   <s:textfield name="name"></s:textfield>   <s:textarea name="description"></s:textarea>   <s:submit name="提交"></s:submit>   </s:form>  </body></html>

form标注为role-editUI
然后在struts.xml里面配置action

 <action name="role_*" class="roleAction" method="{1}">          <result name="list">/WEB-INF/JSP/roleAction/list.jsp</result>          <result name="addUI">/WEB-INF/JSP/roleAction/addUI.jsp</result>          <result name="editUI">/WEB-INF/JSP/roleAction/editUI.jsp</result>          <result name="toList" type="redirectAction">role_list</result>      </action>

editUI.jsp对应的方法为类roleAction下面的editUI()方法

package cn.itcast.oa.view.action;import java.util.List;import javax.annotation.Resource;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Controller;import cn.itcast.oa.domain.Role;import cn.itcast.oa.service.RoleService;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;@Controller@Scope("prototype")public class RoleAction extends ActionSupport{    private Long id;    private String name;    private String description;    @Resource    private RoleService roleService;    /**     * 列表     * @return     * @throws Exception     */    public String list() throws Exception{        List<Role> roleList = roleService.findAll();        ActionContext.getContext().put("roleList", roleList);        return "list";    }    /**     * 删除     * @return     * @throws Exception     */    public String delete() throws Exception{        return "toList";    }    /**     * 添加     * @return     * @throws Exception     */    public String add() throws Exception{         Role role = new Role();         role.setName(name);         role.setDescription(description);         roleService.save(role);        return "toList";    }    /**     * 修改     * @return     * @throws Exception     */    public String edit() throws Exception{        //要更新到数据库        Role role = roleService.getById(id);        role.setName(name);        role.setDescription(description);        roleService.update(role);        return "toList";    }    /**     * 添加页面     * @return     * @throws Exception     */    public String addUI() throws Exception{        return "addUI";    }    /**     * 修改页面     * @return     * @throws Exception     */    public String editUI() throws Exception{        //准备回显的数据        Role role=roleService.getById(id);        //ActionContext.getContext().getValueStack().push(role);        this.name=role.getName();        this.description=role.getDescription();        return "editUI";    }}

然后通过service和hibernate就可以达到编辑的效果。

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