二、Springmvc+Mybatis 引數繫結之預設引數繫結 簡單型別繫結 POJO繫結 POST亂碼問題
阿新 • • 發佈：2018-11-04
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>springmvc-mybatis</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- Spring監聽器,載入spring配置檔案applicationContext.xml -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- POST提交亂碼問題 -->
<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
<!-- 前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<!--
1./* 攔截所有 jsp js png .css 真的全攔截，不建議使用
2.*.action *.do 攔截以do action 結尾的請求，肯定能使用
3./ 攔截所有(不包括jsp) 包含.js .png .css 強烈建議使用， 前臺，面向消費者 /對靜態資源放行
-->
<url-pattern>*.action</url-pattern>
</servlet-mapping>
</web-app>
sqlMapConfig.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!-- 設定別名 --> <typeAliases> <!-- 2. 指定掃描包，會把包內所有的類都設定別名，別名的名稱就是類名，大小寫不敏感 --> <package name="com.itheima.springmvc.pojo" /> </typeAliases> </configuration>
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
<!-- 載入配置檔案 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 資料庫連線池 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="maxActive" value="10" />
<property name="maxIdle" value="5" />
</bean>
<!-- 配置SqlSessionFactory -->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 配置mybatis核心配置檔案 -->
<property name="configLocation" value="classpath:sqlMapConfig.xml" />
<!-- 配置資料來源 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- Mapper動態代理開發 掃描 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 基本包 -->
<property name="basePackage" value="com.itheima.springmvc.dao"></property>
</bean>
<!-- 註解事務 -->
<bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 開啟註解 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
springmvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- 掃描@Controller @Service -->
<context:component-scan base-package="com.itheima"></context:component-scan>
<!-- 處理器對映器 -->
<!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean> -->
<!-- 處理器介面卡 -->
<!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean> -->
<!-- 註解驅動 -->
<mvc:annotation-driven conversion-service="conversionServiceFactoryBean"/>
<!-- 配置Conveter轉換器 轉換工廠 （日期、去掉前後空格）。。 -->
<bean id="conversionServiceFactoryBean" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<!-- 配置 多個轉換器-->
<property name="converters">
<list>
<bean class="com.itheima.springmvc.conversion.DateConverter"/>
</list>
</property>
</bean>
<!-- 檢視解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
Items
package com.itheima.springmvc.pojo;
import java.util.Date;
public class Items {
private Integer id;
private String name;
private Float price;
private String pic;
private Date createtime;
private String detail;
public Items() {
super();
}
public Items(Integer id, String name, Float price, Date createtime, String detail) {
super();
this.id = id;
this.name = name;
this.price = price;
this.createtime = createtime;
this.detail = detail;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name == null ? null : name.trim();
}
public Float getPrice() {
return price;
}
public void setPrice(Float price) {
this.price = price;
}
public String getPic() {
return pic;
}
public void setPic(String pic) {
this.pic = pic == null ? null : pic.trim();
}
public Date getCreatetime() {
return createtime;
}
public void setCreatetime(Date createtime) {
this.createtime = createtime;
}
public String getDetail() {
return detail;
}
public void setDetail(String detail) {
this.detail = detail == null ? null : detail.trim();
}
}
ItemsMapper
package com.itheima.springmvc.dao;
import com.itheima.springmvc.pojo.Items;
import com.itheima.springmvc.pojo.ItemsExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;
public interface ItemsMapper {
int countByExample(ItemsExample example);
int deleteByExample(ItemsExample example);
int deleteByPrimaryKey(Integer id);
int insert(Items record);
int insertSelective(Items record);
List<Items> selectByExampleWithBLOBs(ItemsExample example);
List<Items> selectByExample(ItemsExample example);
Items selectByPrimaryKey(Integer id);
int updateByExampleSelective(@Param("record") Items record, @Param("example") ItemsExample example);
int updateByExampleWithBLOBs(@Param("record") Items record, @Param("example") ItemsExample example);
int updateByExample(@Param("record") Items record, @Param("example") ItemsExample example);
int updateByPrimaryKeySelective(Items record);
int updateByPrimaryKeyWithBLOBs(Items record);
int updateByPrimaryKey(Items record);
}
ItemController
package com.itheima.springmvc.controller;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.itheima.springmvc.pojo.Items;
import com.itheima.springmvc.pojo.QueryVo;
import com.itheima.springmvc.service.ItemService;
/**
* 商品管理
* @author mjl
*
*/
@Controller
public class ItemController {
@Autowired
private ItemService itemService;
//顯示所有商品
@RequestMapping(value="/item/itemList.action")
public ModelAndView itemList(){
//從Mysql查詢資料
List<Items> list = itemService.selectItemList();
System.out.println(list);
ModelAndView mv = new ModelAndView();
//新增資料
mv.addObject("itemList", list);
mv.setViewName("itemList");
return mv;
}
/**
* 1、預設引數繫結(request response session等)
* 2、簡單型別
* @param id
* @param request
* @param response
* @param session
* @param model
* @return
*/
//去修改頁面入參id
@RequestMapping(value="/itemEdit.action")
public ModelAndView toEdit(Integer id,HttpServletRequest request,HttpServletResponse response,
HttpSession session,Model model){
//servlet時期開發
// String id = request.getParameter("id");
// Items items = itemService.selectItemsById(Integer.parseInt(id));
//直接繫結簡單型別
Items items = itemService.selectItemsById(id);
ModelAndView mv = new ModelAndView();
mv.addObject("item",items);
mv.setViewName("editItem");
return mv;
}
/**
* 3.POJO繫結
* @param items
* @return
*/
//提交修改頁面，入參為Items物件
@RequestMapping(value="/updateitem.action")
public ModelAndView updateItem(Items items){
//修改
itemService.updateItemsById(items);
ModelAndView mv = new ModelAndView();
mv.setViewName("success");
return mv;
}
/**
* 4、包裝類QueryVo繫結
* ！！！！！！！！！在jsp頁面獲取屬性時，用包裝類裡面的屬性.屬性，如items.name
* @param vo
* @return
*/
//提交修改頁面，入參為Items的包裝類
@RequestMapping(value="/updateitemVo.action")
public ModelAndView updateQueryVo(QueryVo vo){
itemService.updateItemsById(vo.getItems());
ModelAndView mv = new ModelAndView();
mv.setViewName("success");
return mv;
}
}
ItemService
public interface ItemService {
//查詢列表
public List<Items> selectItemList();
//根據Id查詢items
public Items selectItemsById(Integer id);
//修改
public void updateItemsById(Items items);
}
ItemServiceImpl
package com.itheima.springmvc.service;
import java.util.Date;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.itheima.springmvc.dao.ItemsMapper;
import com.itheima.springmvc.pojo.Items;
/**
* 查詢商品資訊
* @author mjl
*
*/
@Service
public class ItemServiceImpl implements ItemService{
@Autowired
private ItemsMapper itemsMapper;
//查詢商品列表
public List<Items> selectItemList(){
return itemsMapper.selectByExampleWithBLOBs(null);
}
//根據Id查詢商品
public Items selectItemsById(Integer id) {
return itemsMapper.selectByPrimaryKey(id);
}
//修改
public void updateItemsById(Items items) {
items.setCreatetime(new Date());
itemsMapper.updateByPrimaryKeyWithBLOBs(items);
}
}
itemList.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>查詢商品列表</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/item/queryitem.action" method="post">
查詢條件：
<table width="100%" border=1>
<tr>
<td><input type="submit" value="查詢"/></td>
</tr>
</table>
商品列表：
<table width="100%" border=1>
<tr>
<td>商品名稱</td>
<td>商品價格</td>
<td>生產日期</td>
<td>商品描述</td>
<td>操作</td>
</tr>
<c:forEach items="${itemList }" var="item">
<tr>
<td>${item.name }</td>
<td>${item.price }</td>
<td><fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/></td>
<td>${item.detail }</td>
<td><a href="${pageContext.request.contextPath }/itemEdit.action?id=${item.id}">修改</a></td>
</tr>
</c:forEach>
</table>
</form>
</body>
</html>
editItem
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>修改商品資訊</title>
</head>
<body>
<!-- 上傳圖片是需要指定屬性 enctype="multipart/form-data" -->
<!-- <form id="itemForm" action="" method="post" enctype="multipart/form-data"> -->
<form id="itemForm" action="${pageContext.request.contextPath }/updateitem.action" method="post">
<input type="hidden" name="id" value="${item.id }" /> 修改商品資訊：
<table width="100%" border=1>
<tr>
<td>商品名稱</td>
<td><input type="text" name="name" value="${item.name }" /></td>
</tr>
<tr>
<td>商品價格</td>
<td><input type="text" name="price" value="${item.price }" /></td>
</tr>
<tr>
<td>商品生產日期</td>
<td><input type="text" name="createtime"
value="<fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/>" /></td>
</tr>
<tr>
<td>商品圖片</td>
<td>
<c:if test="${item.pic !=null}">
<img src="/pic/${item.pic}" width=100 height=100/>
<br/>
</c:if>
<input type="file" name="pictureFile"/>
</td>
</tr>
<tr>
<td>商品簡介</td>
<td><textarea rows="3" cols="30" name="detail">${item.detail }</textarea>
</td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="提交" />
</td>
</tr>
</table>
</form>
</body>
</html>