收货地址模块技术要点：

1、同步获取自增主键

2、数据绑定的对象绑定

3、越权问题升级巩固

一、新增收货地址

Controller层：

//新建收货地址

@RequestMapping("add.do")

@ResponseBody

public ServerResponse add(HttpSession session,Shipping shipping){

User user = (User)session.getAttribute(Const.CURRENT_USER);

if(user ==null)

return ServerResponse.createByErrorCodeMessage(ResponseCode.NEED_LOGIN.getCode(),ResponseCode.NEED_LOGIN.getDesc());

return iShippingService.add(user.getId(),shipping);

}

Service层：

//新建收货地址

public ServerResponse add(Integer userId, Shipping shipping){

shipping.setUserId(userId);

int rowCount = shippingMapper.insert(shipping);

if(rowCount > 0){

Map result = Maps.newHashMap();

result.put("shippingId",shipping.getId());

return ServerResponse.createBySuccess("新建地址成功",result);

}

return ServerResponse.createByErrorMessage("新建地址失败");

}

Mapper.xml：

insert into mmall_shipping (id, user_id, receiver_name,

receiver_phone, receiver_mobile, receiver_province,

receiver_city, receiver_district, receiver_address,

receiver_zip, create_time, update_time

)

values (#{id,jdbcType=INTEGER}, #{userId,jdbcType=INTEGER}, #{receiverName,jdbcType=VARCHAR},

#{receiverPhone,jdbcType=VARCHAR}, #{receiverMobile,jdbcType=VARCHAR}, #{receiverProvince,jdbcType=VARCHAR},

#{receiverCity,jdbcType=VARCHAR}, #{receiverDistrict,jdbcType=VARCHAR}, #{receiverAddress,jdbcType=VARCHAR},

#{receiverZip,jdbcType=VARCHAR}, now(), now()

)

同步获取自增主键

Mybatis 配置文件 useGeneratedKeys 参数只针对 insert 语句生效，默认为 false。当设置为 true 时，表示如果插入的表以自增列为主键，则允许 JDBC 支持自动生成主键，并可将自动生成的主键返回。

二、删除收货地址

Controller层：

@RequestMapping("del.do")

@ResponseBody

public ServerResponse del(HttpSession session,Integer shippingId){

User user = (User)session.getAttribute(Const.CURRENT_USER);

if(user ==null){

return ServerResponse.createByErrorCodeMessage(ResponseCode.NEED_LOGIN.getCode(),ResponseCode.NEED_LOGIN.getDesc());

}

return iShippingService.del(user.getId(),shippingId);

}

Service层：

public ServerResponse del(Integer userId,Integer shippingId){

int resultCount = shippingMapper.deleteByShippingIdUserId(userId,shippingId);

if(resultCount > 0){

return ServerResponse.createBySuccess("删除地址成功");

}

return ServerResponse.createByErrorMessage("删除地址失败");

}

Mapper.xml：

DELETE FROM mmall_shipping

where id = #{shippingId}

and user_id = #{userId}

三、更新收货地址

Controller层：

@RequestMapping("update.do")

@ResponseBody

public ServerResponse update(HttpSession session,Shipping shipping){

User user = (User)session.getAttribute(Const.CURRENT_USER);

if(user ==null){

return ServerResponse.createByErrorCodeMessage(ResponseCode.NEED_LOGIN.getCode(),ResponseCode.NEED_LOGIN.getDesc());

}

return iShippingService.update(user.getId(),shipping);

}

Service层：

public ServerResponse update(Integer userId, Shipping shipping){

shipping.setUserId(userId);

int rowCount = shippingMapper.updateByShipping(shipping);

if(rowCount > 0){

return ServerResponse.createBySuccess("更新地址成功");

}

return ServerResponse.createByErrorMessage("更新地址失败");

}

Mapper.xml：

update mmall_shipping

set

receiver_name = #{receiverName,jdbcType=VARCHAR},

receiver_phone = #{receiverPhone,jdbcType=VARCHAR},

receiver_mobile = #{receiverMobile,jdbcType=VARCHAR},

receiver_province = #{receiverProvince,jdbcType=VARCHAR},

receiver_city = #{receiverCity,jdbcType=VARCHAR},

receiver_district = #{receiverDistrict,jdbcType=VARCHAR},

receiver_address = #{receiverAddress,jdbcType=VARCHAR},

receiver_zip = #{receiverZip,jdbcType=VARCHAR},

create_time = #{createTime,jdbcType=TIMESTAMP},

update_time = now()

where id = #{id,jdbcType=INTEGER}

and user_id = #{userId,jdbcType=INTEGER}

SpringMVC绑定对象

CSpringMVC会按请求参数名和POJO属性名进行自动匹配，自动为该对象填充属性值，支持级联属性。

注意：pojo对象的属性名和表单中input的name属性一致

表单：

编号:

名称:

出厂时间:

备注:

处理器映射方法：

@RequestMapping(value={"/insertItem.action"})

public String insertItem(Model model,Item item){

return "itemList";

}

注意：提交的表单不要有日期类型的数据，否则会报错400，如果需要提交日期类型的数据，需要自定义参数绑定的内容

SpringMVC时间处理

1. 在控制器中使用@InitBind注解

@Controller

public class TestFileController {

@InitBinder

public void initBind(WebDataBinder binder){

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");

dateFormat.setLenient(false);

binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));

}

@RequestMapping("/doAdd")

public void doAdd(@ModelAttribute User user, HttpServletRequest request){

System.out.println(user.getName());

System.out.println(user.getBirthtime());

}

}

2. 在POJO中日期属性上添加@DateTimeFormat

public class User{

private String name;

@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm")

private Date birthtime;

// 属性的setter/getter方法略

}

SpringMVC乱码解决

post中文乱码：

CharacterEncodingFilter

org.springframework.web.filter.CharacterEncodingFilter

encoding

UTF-8

CharacterEncodingFilter

*.action

get中文乱码：

方法1:修改tomcat的server.xml

方式2:手动转码

new String(request.getParameter("id").getBytes("iso8859-1"), "utf-8");

四、查询收货地址列表

Controller层：

@RequestMapping("list.do")

@ResponseBody

public ServerResponse list(@RequestParam(value = "pageNum",defaultValue = "1") int pageNum,

@RequestParam(value = "pageSize",defaultValue = "10")int pageSize,

HttpSession session){

User user = (User)session.getAttribute(Const.CURRENT_USER);

if(user ==null){

return ServerResponse.createByErrorCodeMessage(ResponseCode.NEED_LOGIN.getCode(),ResponseCode.NEED_LOGIN.getDesc());

}

return iShippingService.list(user.getId(),pageNum,pageSize);

}

Service层：

public ServerResponse list(Integer userId,int pageNum,int pageSize){

PageHelper.startPage(pageNum,pageSize);

List shippingList = shippingMapper.selectByUserId(userId);

PageInfo pageInfo = new PageInfo(shippingList);

return ServerResponse.createBySuccess(pageInfo);

}

Mapper.xml：

SELECT

from mmall_shipping

where user_id = #{userId}

Java面试的完整博客目录如下：Java笔试面试目录