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SSH前后端数据交互

2016-12-18 17:37 387 查看

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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