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SSM——SSM整合+log4j 完成简单的增删改查

2018-02-05 12:51 330 查看
demo介绍:

通过 Spring+SpringMvc+Mybatis 完成用户的增删改查操作。

1.项目结构(上图):



用到的jar包(上图):



2.建好项目结构之后,就可以向里面添加内容了

1). 首先我们创建一个User javabean ,放在po的包下 取名为User.java

package com.dh.ssm.po;

import java.io.Serializable;
import java.util.Date;

@SuppressWarnings("serial")
public class User implements Serializable{
private Integer id;
private String userName;
private Date birthday;
private String sex;
private String address;
public User(){}
public User(Integer id, String userName, Date birthday, String sex, String address) {
super();
this.id = id;
this.userName = userName;
this.birthday = birthday;
this.sex = sex;
this.address = address;
}

public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}

@Override
public String toString() {
return "User [id=" + id + ", userName=" + userName + ", birthday=" + birthday + ", sex=" + sex + ", address="
+ address + "]";
}

}


2).在mapper包下创建UserMapper.java 接口,也就是 Dao接口

package com.dh.ssm.mapper;

import java.util.List;
import com.dh.ssm.po.User;
public interface UserMapper {
public void saveUser(User user)throws Exception;
public void deleteUserById(Integer id)throws Exception;
public void updateUser(User user)throws Exception;
public User findUserById(Integer id)throws Exception;
public List<User> findAll()throws Exception;
}


3).紧接着我们在mapper的包下来创建mapper的实现类 UserMapper.xml 相当于daoImpl 不过在mybatis中是用mapper.xml这种配置文件的形式来实现的。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dh.ssm.mapper.UserMapper">
<!--这里的id的内容必须和mapper接口中的方法名称相同,
parameterType 指的是传入的参数的类型
resultType 指的是返回值的类型
-->
<insert id="saveUser" parameterType="com.dh.ssm.po.User" >
insert into user (userName,birthday,sex,address)
values(#{userName},#{birthday},#{sex},#{address})
</insert>
<delete id="deleteUserById" parameterType="Integer">
delete from user where id = #{id}
</delete>
<update id="updateUser" parameterType="com.dh.ssm.po.User" >
update user set userName=#{userName},birthday=#{birthday},sex=#{sex},address=#{address}
where id=#{id}
</update>
<select id="findUserById" parameterType="Integer" resultType="com.dh.ssm.po.User">
select * from user where id = #{id}
</select>
<select id="findAll" resultType="com.dh.ssm.po.User">
select * from user
</select>
</mapper>


4).编写Mybatis的配置文件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>
<!-- 这里指的是mapper文件的扫描 -->
<mappers>
<package name="com.dh.ssm.mapper"/>
</mappers>
</configuration>


3.Mybatis与Spring 的整合(重点)其实就是一个配置文件,我们将他取名为spring-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd ">
<!--引入数据库的参数配置文件 db.properties-->
<context:property-placeholder location="classpath:db.properties"/>
<!--创建数据库连接池 dbcp-->
<bean id="dataSource" class="org.apache.commons.dbcp2.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="initialSize" value="1" />
<!-- 连接池的最大值 -->
<property name="maxTotal" value="30" />
<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->
<property name="maxIdle" value="5" />
<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->
<property name="minIdle" value="1" />
</bean>
<!--设置sqlsessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--加载mybatis的配置文件  -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property>
<property name="dataSource" ref="dataSource"></property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.dh.ssm.mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<!--事务管理器   -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 在dao中配置了,在这里引用 -->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 使用声明式事务
transaction-manager:引用上面定义的事务管理器  -->
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>


其中db.properties的内容如下:

#这里的mybatis是指的数据库的名字,需要换成你自己的
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf-8
jdbc.username=root
jdbc.password=root


4.至此为止已经完成了Spring对于Mybatis的整合,接下来我们需要进行Service和其实现类 serviceImpl 的编写工作。

1). 在service的包下创建用户的service接口IUserService.java

package com.dh.ssm.service;
import java.util.List;
import org.springframework.stereotype.Service;
import com.dh.ssm.po.User;
@Service
public interface IUserService {
public void saveUser(User user)throws Exception;
public void deleteUserById(Integer id)throws Exception;
public void updateUser(User user)throws Exception;
public User findUserById(Integer id)throws Exception;
public List<User> findAll()throws Exception;
}


2).在serviceImpl的包下创建service的实现类UserServiceImpl.java

package com.dh.ssm.serviceImpl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.dh.ssm.mapper.UserMapper;
import com.dh.ssm.po.User;
import com.dh.ssm.service.IUserService;
@Service
@Transactional

public class UserServiceImpl implements IUserService {
@Resource
private UserMapper userMapper;
@Override
public void saveUser(User user) throws Exception {
userMapper.saveUser(user);

}

@Override
public void deleteUserById(Integer id) throws Exception {
userMapper.deleteUserById(id);

}

@Override
public void updateUser(User user) throws Exception {
userMapper.updateUser(user);

}

@Override
public User findUserById(Integer id) throws Exception {
User user=userMapper.findUserById(id);
return user;
}

@Override
public List<User> findAll() throws Exception {
List<User> list = userMapper.findAll();
return list;
}

}


5.接下来就是SpringMvc的部分了,我们先来进行controller的编写

1). 在controller的包下创建UserController.java

package com.dh.ssm.controller;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springfram
14eb5
ework.web.bind.annotation.RequestMapping;
import com.dh.ssm.po.User;
import com.dh.ssm.service.IUserService;

@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
private IUserService userService;

/**
* 查询所有用户
* @param request
* @param model
* @return allUser.jsp
* @throws Exception
*/
@RequestMapping("/getAllUser")
public String getAllUser(Model model)throws Exception{
List<User> userList = userService.findAll();
model.addAttribute("userList", userList);
//request.setAttribute("userList", userList);
return "/allUser";
}
/**
* 添加用户中间的跳转页面
* @return
* @throws Exception
*/
@RequestMapping("/toAddUser")
public String toAddUser()throws Exception{
System.out.println("add0..");
return "addUser";
}
/**
* 添加用户
* @return 添加完成之后重定向到查找所有用户
* @throws Exception
*/
@RequestMapping("/addUser")
public String addUser(User user)throws Exception{
userService.saveUser(user);
return "redirect:/user/getAllUser.action";
}
/**
* 删除用户
* @return 删除完成之后重定向到查找所有用户
* @throws Exception
*/
@RequestMapping("/delUer")
public String delUer(int id,Model model)throws Exception{
userService.deleteUserById(id);
return "redirect:/user/getAllUser.action";
}
/**
* 编辑页面的展示 先编辑,再提交
* @param id
* @param model
* @param request
* @return
* @throws Exception
*/
@RequestMapping("/editUser")
public String editUser(int id,Model model)throws Exception{
User user = userService.findUserById(id);
model.addAttribute("user", user);
return "editUser";
}
@RequestMapping("/updateUser")
public String updateUser(User user,Model model)throws Exception{
userService.updateUser(user);
//user=userService.findUserById(user.getId());
model.addAttribute("user", user);
return "redirect:/user/getAllUser.action";
}

}


2). 进行Springmvc和Spring 的整合在spring-mvc.xml中配置。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd ">
<context:component-scan base-package="com.dh.ssm.controller"/>
<context:component-scan base-package="com.dh.ssm.service"/>
<context:component-scan base-package="com.dh.ssm.serviceImpl"/>
<mvc:annotation-driven conversion-service="conversionServiceFactoryBean"/>

<--
配置静态资源,直接映射到对应的文件夹,不被DispatcherServlet处理,
04新增功能,需要重新设置spring-mvc-xsd
-->
<mvc:resources mapping="/img/**" location="/img/" />
<mvc:resources mapping="/js/**" location="/js/" />
<mvc:resources mapping="/css/**" location="/css/" />
<mvc:resources mapping="/html/**" location="/html/" />
<!--视图解析器  -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>

</beans>


接下来是web.xml的配置,包括配置文件的路径,Spring的监听,SpringMvc的前端控制器的监听 ……..

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>SSMProject</display-name>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-*.xml</param-value>
</context-param>
<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:spring/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
<filter>
<filter-name>encodingFilter</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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>


6.后台的东西到此为止就已经全部完成了,接下来我们来看一下页面jsp

1).index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<%
String basePath = "http://" + request.getServerName() + ":" +request.getServerPort()
+ request.getContextPath() + "/";
%>
<head>
<base href = "<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>首页</title>
</head>
<body>
<h3><a href="<%=basePath%>user/getAllUser.action">进入用户管理页</a></h3>
</body>
</html>


2).查询所有用户的页面 alluser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<%
String basePath = "http://" + request.getServerName() + ":" +request.getServerPort()
+ request.getContextPath() + "/";
%>
<head>
<base href = "<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户查询列表</title>
</head>
<body>
<form action="<%=basePath%>user/toAddUser.action" method="post">
<input type="submit" value="添加"/>
</form>
<table border="1px" width="600px">
<tr>
<th>姓名</th>
<th>性别</th>
<th>生日</th>
<th>地址</th>
<th>操作</th>
</tr>
<c:if test="${!empty userList}">
<c:forEach items="${userList}" var="user">
<tr>
<td>${user.userName}</td>
<td>${user.sex}</td>
<td><fmt:formatDate value="${user.birthday}" pattern="yyyy-MM-dd"/></td>
<td>${user.address}</td>
<td>
<a href="<%=basePath%>user/editUser.action?id=${user.id}">修改</a>
<a href="<%=basePath%>user/delUer.action?id=${user.id}">删除</a>
</td>
</tr>
</c:forEach>
</c:if>
</table>
</body>
</html>


3). 添加用户页面 addUser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>

<%
String basePath = "http://" + request.getServerName() + ":" +request.getServerPort()
+ request.getContextPath() + "/";
%>

<head>
<base href = "<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户添加页面</title>
</head>
<body>
<form action="<%=basePath%>user/addUser.action" method="post">
<table>
<tr>
<td>姓名</td>
<td>
<input type="text" name="userName">
</td>
</tr>
<tr>
<td>生日</td>
<td>
<input type="text" name="birthday">
</td>
</tr>
<tr>
<td>性别</td>
<td>
<input type="text" name="sex">
</td>
</tr>
<tr>
<td>地址</td>
<td>
<input type="text" name="address">
</td>
</tr>
<tr>
<td>
<input type="submit" value="保存">
</td>
</tr>
</table>
</form>
</body>
</html>


4). 编辑用户页面 editUser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>

<%
String basePath = "http://" + request.getServerName() + ":" +request.getServerPort()
+ request.getContextPath() + "/";
%>

<head>
<base href = "<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户编辑页面</title>
</head>
<body>
<form action="<%=basePath%>user/updateUser.action" method="post">
<input type="hidden" name="id" value="${user.id }"/>
<table border="1px" width="400px">
<tr>
<td>id</td>
<td width="300px">
<input type="text" name="id" value="${user.id}" style="width:300px" readonly="readonly">
</td>
</tr>
<tr>
<td>姓名</td>
<td width="300px">
<input type="text" name="userName" value="${user.userName}" style="width:300px">
</td>
</tr>
<tr>
<td>性别</td>
<td>
<input type="text" name="sex" value="${user.sex}" style="width:300px">
</td>
</tr>
<tr>
<td>生日</td>
<td>

<input type="text" name="birthday" value="<fmt:formatDate value="${user.birthday}" pattern="yyyy-MM-dd"/>" style="width:300px">
</td>
</tr>
<tr>
<td>地址</td>
<td>
<input type="text" name="address" value="${user.address}" style="width:300px">
</td>
</tr>
<tr>
<td>
<button type="submit" >提交</button>
</td>
</tr>
</table>
</form>
</body>
</html>


到此为止 ssm整合增删改查的小项目就已经做好了,不过里面存在一些小问题,就是对于日期格式的显示,SpringMvc提供的转换器中没有对于日期的自动转换,所以我们需要自己编写一个日期转换器

自定义转换器的编写,在 converter的包下建一个日期转换的类 DateConverter.java 并让其实现DateConverter的接口,然后需要在spring-mvc.xml中配置一下此转换器

package com.dh.ssm.converter;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.springframework.core.convert.converter.Converter;

public class DateConverter implements Converter<String, Date> {

@Override
public Date convert(String source) {
try {
if(null != source){//2016-11-05 11_43-50
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
return df.parse(source);
}
} catch (Exception e) {

}
return null;
}

}


需要在spring-mvc.xml配置文件中添加这样一段代码:

<!-- 配置Conveter转换器 转换工厂 -->
<bean id="conversionServiceFactoryBean" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<!-- 配置 多个转换器-->
<property name="converters">
<list>
<bean class="com.dh.ssm.converter.DateConverter"/>
</list>
</property>
</bean>


最后我们再加上log4j的配置文件 log4j.properties

### set log levels ###
log4j.rootLogger = info , stdout
log4j.addivity.org.apache=true
log4j.logger.org.mybatis.example.BlogMapper=TRACE
#Console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.Threshold=info
log4j.appender.stdout.Target=System.out
#log4j.appender.CONSOLE.Encoding=GBK
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
#log4j.appender.stdout.layout.ConversionPattern= %d - %c -%-4r [%t] %-5p %c %x - %m%n
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n


一个完美的增删改查+log4j的ssm框架就完成了 ,快去运行一下试试吧。如有错误,请留言指正
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