7-21相关update与delete的操作
2015-07-21 11:37
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修改时根据id传值，点击用户名时跳转到修改页面，对应名称后面显示将要修改的内容，id静态显示，密码不显示
<td><a th:href="@{delete-new(userId=${user.userId})}"><span th:text="${user.userId}"></span></a></td>
<td><a th:href="@{update-new(userId=${user.userId})}"><span th:text="${user.userName}"></span></a></td>
2. string类型判断是否为空时可用
if(id.isEmpty()||password.isEmpty())
或是
if("".equals(id)||"".equals(password))
3. 修改和删除时，汉字的传值方式为Get方法，这时，后台取不到值，会显示为乱码，这样无法进行操作，需用如下代码
String type = new String(goodsForm.getType().getBytes("iso8859-1"),"utf-8");
4. 修改页面(update-new.html)的布局
<form action="init" th:object="${userBean}" method="post">
<div>
<h3>修改个人信息</h3>
<table>
<tr>
<td>用 户 ID </td>
<td><span th:text="${userBean.userId}"></span></td>
<td><input name="userId" type="hidden" value="" th:value="${userBean.userId}"/> </td>
</tr>
<tr>
<td>用 户 名</td>
<td><input name="userName" type="text" value="" th:value="${userBean.userName}"/> </td>
</tr>
<tr>
<td>密 码</td>
<td><input name="userPassword" type="password"/> </td>
</tr>
<tr>
<td>确认密码 </td>
<td><input name="passwordConfirm" type="password" /> </td>
</tr>
<div><label><span style="display:inline;color:red;" th:text="${updatemessage}"></span></label></div>
<tr>
<td><input type="submit" value="Update" name="update" /> </td>
<td><input type="submit" value="Cancel" name="cancel" /> </td>
<td><input type="submit" value="Return" name="return-show" /> </td>
</tr>
</table>
</div>
</form>
5. 以列表形式展示用户信息页面（show.html）
<body>
<div><label><span style="display:inline;color:red;" th:text="${yes}"></span></label></div>
<table>
<tr>
<td>UserId</td>
<td>UserName</td>
<td>Delete</td>
<td>Update</td>
</tr>
<div th:each="user,s:${list}">
<tr>
<td><a th:href="@{delete-new(userId=${user.userId})}"><span th:text="${user.userId}"></span></a></td>
<td><a th:href="@{update-new(userId=${user.userId})}"><span th:text="${user.userName}"></span></a></td>
<td><a th:href="@{delete-new(userId=${user.userId})}">delete</a></td>
<td><a th:href="@{update-new(userId=${user.userId})}">update</a></td>
</tr>
</div>
</table>
<form action="init" th:object="${userBean}" method="post">
<div><input type="submit" value="返回首页" name="returnindex" /></div>
</form>
</body>
6. controller中的相关代码
全局分布
@Autowired
HelloWorldService helloWorldService;
//跳转到程序的首页(index.html)
@RequestMapping(value = "/", method = RequestMethod.GET)
public String index(Model model) {
return "index";
}
//首页(index.html)的登录验证
@RequestMapping(value = "/init", method = RequestMethod.POST,params="searchall")
public String initLoginall(UserBean userBean, Model model) {
UserBean result1 = helloWorldService.searchUser(userBean);
if( result1 != null)
{
List<UserBean> result = helloWorldService.searchallUser(userBean);
model.addAttribute("list", result);
return "show";
}
else
{model.addAttribute("message", "您输入的用户ID或密码错误，请重新输入！");
}
return "index";
}
//首页(index.html)跳转到注册页面(zhuce.html)
@RequestMapping(value = "/init", method = RequestMethod.POST,params="zhuce")
public String initZhuce(UserBean userBean,Model model) {
return "zhuce";
}
//注册页面(zhuce.html)的提交
@RequestMapping(value = "/init", method = RequestMethod.POST,params="submit")
public String initSubmit(UserBean usersubmit, Model model) {
String id=usersubmit.getUserId().toString();
String password=usersubmit.getUserPassword().toString();
String passwordconfirm=usersubmit.getPasswordConfirm().toString();
// if("".equals(id)||"".equals(password))
if(id.isEmpty()||password.isEmpty())
{ model.addAttribute("userBean", usersubmit);
model.addAttribute("success", "用户名和密码不能为空，请重新填写！");
return "zhuce";
}
else if(!password.equals(passwordconfirm))
{ model.addAttribute("userBean", usersubmit);
model.addAttribute("success", "两次密码输入不一致，请重新确认密码！");
return "zhuce";
}
else
{ int submit = helloWorldService.submit(usersubmit);
model.addAttribute("success", "注册成功，请登录！");
return "zhuce";}
}
//注册页面(zhuce.html)返回到首页(index.html)登录
@RequestMapping(value = "/init", method = RequestMethod.POST,params="back")
public String initBack(UserBean userBean,Model model) {
return "index";
}
//列表页面(show.html)跳转到删除确认页面(confirm.html)
@RequestMapping(value = "/delete-new", method = RequestMethod.GET)
public String initConfirm(UserBean userBean,Model model) {
return "confirm";
}
//列表页面(show.html)跳转到更新页面(update-new.html)
@RequestMapping(value = "/update-new", method = RequestMethod.GET)
public String initUpdatenew(UserBean userBean,Model model) {
UserBean result = helloWorldService.searchupUser(userBean);
model.addAttribute("userBean", result);
return "update-new";
}
//列表页面(show.html)跳转到程序的首页(index.html)
@RequestMapping(value = "/init", method = RequestMethod.POST,params="returnindex")
public String returnindex(UserBean userBean,Model model) {
return "index";
}
//更新页面(update-new.html)的修改判断
@RequestMapping(value = "/init", method = RequestMethod.POST,params="update")
public String initUpdate(UserBean userupdate, Model model) {
String updateps=userupdate.getUserPassword().toString();
String updatepsc=userupdate.getPasswordConfirm().toString();
if(updateps.equals(updatepsc))
{int update = helloWorldService.update(userupdate);
model.addAttribute("updatemessage", "修改成功！");}
else
{model.addAttribute("updatemessage", "请重新确认密码！");}
return "update-new";
}
//更新页面(update-new.html)取消操作
@RequestMapping(value = "/init", method = RequestMethod.POST,params="cancel")
public String initCancel(UserBean usercancel, Model model) {
return "update-new";
}
//更新页面(update-new.html)跳转回列表页面(show.html)
@RequestMapping(value = "/init", method = RequestMethod.POST,params="return-show")
public String initReturn(UserBean userreturn, Model model) {
List<UserBean> result = helloWorldService.searchallUser(userreturn);
model.addAttribute("list", result);
return "show";
}
//删除确认页面(confirm.html)的确认操作
@RequestMapping(value = "/init", method = RequestMethod.POST,params="yes")
public String initYes(UserBean userdelete,Model model) {
int delete = helloWorldService.delete(userdelete);
List<UserBean> result = helloWorldService.searchallUser(userdelete);
model.addAttribute("list", result);
model.addAttribute("yes", "删除成功！");
return "show";
}
//删除确认页面(confirm.html)的取消操作
@RequestMapping(value = "/init", method = RequestMethod.POST,params="no")
public String initNo(UserBean userBean,Model model) {
List<UserBean> result = helloWorldService.searchallUser(userBean);
model.addAttribute("list", result);
model.addAttribute("yes", "取消删除！");
return "show";
}
7. service中的相关代码
@Autowired
QueryDAO queryDao;
@Autowired
UpdateDAO updateDao;
public UserBean searchUser(UserBean frm) {
// UserBean result= queryDao.executeForObject("User.selectUser", frm, UserBean.class);
frm = queryDao.executeForObject("User.selectUser", frm, UserBean.class);
//frm.setUserId("test");
return frm;
}
public UserBean searchupUser(UserBean frm) {
// UserBean result= queryDao.executeForObject("User.selectUser", frm, UserBean.class);
frm = queryDao.executeForObject("User.selectupUser", frm, UserBean.class);
//frm.setUserId("test");
return frm;
}
public List<UserBean> searchallUser(UserBean frm) {
List<UserBean> result= queryDao.executeForObjectList("User.selectallUser", frm);
//frm = queryDao.executeForObject("User.selectUser", frm, UserBean.class);
//frm.setUserId("test");
return result;
}
public int submit(UserBean frm){
return updateDao.execute("User.submitUser",frm);
}
public int delete(UserBean frm){
return updateDao.execute("User.deleteUser",frm);
}
public int insert(UserBean frm){
return updateDao.execute("User.insertUser",frm);
}
public int update(UserBean frm){
return updateDao.execute("User.updateUser",frm);
}
8. sqlMap.xml中相关数据库操作的代码
<sqlMap namespace="User"> <select id="selectUser" parameterClass="cn.training.bean.UserBean" resultClass="cn.training.bean.UserBean"> SELECT userid as userId,userPassword FROM user WHERE userid = #userId# and userPassword=#userPassword# </select> <select id="selectupUser" parameterClass="cn.training.bean.UserBean" resultClass="cn.training.bean.UserBean"> SELECT userid as userId,userName FROM user WHERE userid = #userId# </select> <select id="selectallUser" parameterClass="cn.training.bean.UserBean" resultClass="cn.training.bean.UserBean"> SELECT userid as userId,userName FROM user </select> <delete id="deleteUser" parameterClass="cn.training.bean.UserBean"> delete from user where userid=#userId# </delete> <insert id="submitUser" parameterClass="cn.training.bean.UserBean"> INSERT INTO user VALUES(#userId#,#userName#,#userPassword#) </insert> <insert id="insertUser" parameterClass="cn.training.bean.UserBean"> INSERT INTO user VALUES(#userId#,#userName#) </insert> <update id="updateUser" parameterClass="cn.training.bean.UserBean"> update user set userName=#userName# , userPassword=#userPassword# where userid=#userId# </update> </sqlMap>
9.注册页面(zhuce.html)
<form action="init" th:object="${userBean}" method="post">
<div>
<h3>注册信息</h3>
<table>
<tr>
<td>用 户 ID </td>
<td><input name="userId" type="text" /> </td>
</tr>
<tr>
<td>用 户 名</td>
<td><input name="userName" type="text" /> </td>
</tr>
<tr>
<td>密 码</td>
<td><input name="userPassword" type="password"/> </td>
</tr>
<tr>
<td>确认密码 </td>
<td><input name="passwordConfirm" type="password" /> </td>
</tr>
<div><label><span style="display:inline;color:red;" th:text="${success}"></span></label></div>
<tr>
<td><input type="submit" value="Submit" name="submit" /> </td>
<td><input type="submit" value="Back" name="back" /> </td>
</tr>
</table>
</div>
</form>
10.首页-登录页面(index.html)
<div align="center">
<form action="init" th:object="${userBean}" method="post">
<div><h3>用 户 登 录</h3></div>
<div><label><span style="display:inline;color:red;" th:text="${message}"></span></label></div>
<div>
<tr>
<td>用户ID</td>
<td><input name="userId" type="text" /></td>
</tr>
</div>
<div>
<tr>
<td>密 码</td>
<td><input name="userPassword" type="password" /></td>
</tr>
</div>
<div>
<tr>
<td><input type="submit" value="登 录" name="searchall" /></td>
<td><input type="submit" value="注 册" name="zhuce" /></td>
</tr>
</div>
</form>
</div>
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