JAVA中SSM框架的搭建实现CRUD的方法

时间：2022-02-26 22:37:20

最近在开发公司的一个系统，系统的框架是用ssm的框架搭建的，当然和这次写博客的不一样，它拥有很多的配置文件，企业级的开发所需要的配置文件是非常繁琐的，今天记录一下一个简单的ssm框架的搭建和实现一个crud的操作。

JAVA中SSM框架的搭建实现CRUD的方法

使用的是maven插件来配置我们需要的jar包，由于操作不多，所以并没有配置很多，要注意自己使用的jdk的版本，选择不同版本号的jdk

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<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
 xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 <modelversion>4.0.0</modelversion>
 <groupid>com.lr</groupid>
 <artifactid>ssm</artifactid>
 <packaging>war</packaging>
 <version>0.0.1-snapshot</version>
 <name>ssm maven webapp</name>
 <url>http://maven.apache.org</url>
 <!-- 用来设置版本号 -->
  <properties>
    <srping.version>4.0.2.release</srping.version>
    <mybatis.version>3.2.8</mybatis.version>
    <slf4j.version>1.7.12</slf4j.version>
    <log4j.version>1.2.17</log4j.version>
  </properties>
  <!-- 用到的jar包 -->
  <dependencies>
    <!-- 单元测试 -->
    <dependency>
      <groupid>junit</groupid>
      <artifactid>junit</artifactid>
      <version>4.11</version>
      <!-- 表示开发的时候引入，发布的时候不会加载此包 -->
      <scope>test</scope>
    </dependency>
    <!-- java ee包 -->
    <dependency>
      <groupid>javax</groupid>
      <artifactid>javaee-api</artifactid>
      <version>7.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
    <dependency>
      <groupid>com.fasterxml.jackson.core</groupid>
      <artifactid>jackson-databind</artifactid>
      <version>2.8.8</version>
    </dependency>
    
    <!-- spring框架包 start -->
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-test</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-core</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-oxm</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-tx</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-jdbc</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-aop</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-context</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-context-support</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-expression</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-orm</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-web</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-webmvc</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      <artifactid>spring-aspects</artifactid>
      <version>${srping.version}</version>
    </dependency>
    <!-- spring框架包 end -->
    <!-- mybatis框架包 start -->
    <dependency>
      <groupid>org.mybatis</groupid>
      <artifactid>mybatis</artifactid>
      <version>${mybatis.version}</version>
    </dependency>
    <dependency>
      <groupid>org.mybatis</groupid>
      <artifactid>mybatis-spring</artifactid>
      <version>1.2.2</version>
    </dependency>
    <!-- mybatis框架包 end -->
    <!-- 数据库驱动 -->
    <dependency>
      <groupid>mysql</groupid>
      <artifactid>mysql-connector-java</artifactid>
      <version>5.1.35</version>
    </dependency>
    <!-- 导入dbcp的jar包，用来在applicationcontext.xml中配置数据库 -->
    <dependency>
      <groupid>commons-dbcp</groupid>
      <artifactid>commons-dbcp</artifactid>
      <version>1.4</version>
    </dependency>
    <!-- jstl标签类 -->
    <dependency>
      <groupid>jstl</groupid>
      <artifactid>jstl</artifactid>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupid>taglibs</groupid>
      <artifactid>standard</artifactid>
      <version>1.1.2</version>
    </dependency>
    <!-- log start -->
    <dependency>
      <groupid>log4j</groupid>
      <artifactid>log4j</artifactid>
      <version>${log4j.version}</version>
    </dependency>
    <dependency>
      <groupid>org.slf4j</groupid>
      <artifactid>slf4j-api</artifactid>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupid>org.slf4j</groupid>
      <artifactid>slf4j-log4j12</artifactid>
      <version>${slf4j.version}</version>
    </dependency>
    <!-- log end -->
    <!-- json -->
    <!-- 格式化对象，方便输出日志 -->
    <dependency>
      <groupid>com.alibaba</groupid>
      <artifactid>fastjson</artifactid>
      <version>1.2.6</version>
    </dependency>
    <dependency>
      <groupid>org.codehaus.jackson</groupid>
      <artifactid>jackson-mapper-asl</artifactid>
      <version>1.9.13</version>
    </dependency>
    <!-- 上传组件包 start -->
    <dependency>
      <groupid>commons-fileupload</groupid>
      <artifactid>commons-fileupload</artifactid>
      <version>1.3.1</version>
    </dependency>
    <dependency>
      <groupid>commons-io</groupid>
      <artifactid>commons-io</artifactid>
      <version>2.4</version>
    </dependency>
    <dependency>
      <groupid>commons-codec</groupid>
      <artifactid>commons-codec</artifactid>
      <version>1.10</version>
    </dependency>
    <!-- 上传组件包 end -->
 
    <!-- al相关添加 -->
    <dependency>
      <groupid>net.sourceforge.jexcelapi</groupid>
      <artifactid>jxl</artifactid>
      <version>2.6</version>
    </dependency>
    <dependency>
      <groupid>org.apache.poi</groupid>
      <artifactid>poi</artifactid>
      <version>3.8</version>
    </dependency>
    <dependency>
      <groupid>org.apache.poi</groupid>
      <artifactid>poi-ooxml</artifactid>
      <version>3.9</version>
    </dependency>
    <!-- al相关添加 -->
  </dependencies>
 
   <build>
    <finalname>maven_project</finalname>
    <plugins>
      <plugin>
        <groupid>org.apache.maven.plugins</groupid>
        <artifactid>maven-compiler-plugin</artifactid>
        <version>2.3.2</version>
        <configuration>
          <source>1.7</source>
          <target>1.7</target>
        </configuration>
      </plugin>
    </plugins>
  </build> 
</project>

然后配置数据库的连接，改成自己的数据库就行了

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driver=com.mysql.jdbc.driver
url=jdbc\:mysql\://locahost\:3306/db
username=root
password=root
maxactive=20
maxidle=20
minidle=1
maxwait=60000

配置文件spring-dao.xml，spring会自动查找其下的类

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<?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-3.1.xsd 
            http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.1.xsd 
            http://www.springframework.org/schema/mvc 
            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
             
             
  <!-- dao接口所在包名，spring会自动查找其下的类 -->
  <bean class="org.mybatis.spring.mapper.mapperscannerconfigurer">
    <!--basepackage指定要扫描的包，在此包之下的映射器都会被搜索到。
     可指定多个包，包与包之间用逗号或分号分隔-->
    <property name="basepackage" value="com.lr.dao" />
    <property name="sqlsessionfactory" ref="sqlsessionfactory"></property>
  </bean>            
             
</beans>

配置文件spring和mybatis的整合文件

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<?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/context 
            http://www.springframework.org/schema/context/spring-context-4.0.xsd 
            http://www.springframework.org/schema/mvc 
            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
 
  <!-- 引入配置文件 -->
<context:property-placeholder location="classpath:/jdbc.properties" />
  <bean id="datasource" class="org.apache.commons.dbcp.basicdatasource" destroy-method="close">
    <property name="driverclassname" value="com.mysql.jdbc.driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/db?useunicode=true&characterencoding=utf8" />
    <property name="username" value="root" />
    <property name="password" value="root" />
    <!-- 初始化连接大小 -->
    <property name="initialsize" value="3" />
    <!-- 连接池最大数量 -->
    <property name="maxactive" value="20" />
    <!-- 连接池最大空闲 -->
    <property name="maxidle" value="20" />
    <!-- 连接池最小空闲 -->
    <property name="minidle" value="1" />
    <!-- 获取连接最大等待时间 -->
    <property name="maxwait" value="60000" />
  </bean>
 
  <!-- spring和mybatis完美整合，不需要mybatis的配置映射文件 -->
  <bean id="sqlsessionfactory" class="org.mybatis.spring.sqlsessionfactorybean">
    <property name="datasource" ref="datasource" />
    <!-- 自动扫描mapping.xml文件 -->
    <property name="mapperlocations" value="classpath:com/lr/mapper/*.xml"></property>
  </bean>
   
</beans>

配置事物的文件

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<?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:aop="http://www.springframework.org/schema/aop"
  xmlns:tx="http://www.springframework.org/schema/tx"
  xmlns:mvc="http://www.springframework.org/schema/mvc"
  xsi:schemalocation="http://www.springframework.org/schema/beans 
            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
            http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.1.xsd 
            http://www.springframework.org/schema/aop 
            http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
            http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">
 
  <!-- (事务管理)transaction manager, use jtatransactionmanager for global tx -->
  <bean id="transactionmanager"
    class="org.springframework.jdbc.datasource.datasourcetransactionmanager">
    <property name="datasource" ref="datasource" />
  </bean>
   
   <!-- 配置参与事务的类 -->
   <aop:config>
     <aop:pointcut id="allservicemethod" expression="execution(* com.lr.service.*.*(..))"/>
     <aop:advisor pointcut-ref="allservicemethod" advice-ref="txadvice" />
   </aop:config>
   
  <!-- 使用声明方式配置事务 -->
  <tx:advice id="txadvice" transaction-manager="transactionmanager">
     <tx:attributes>
        <tx:method name="*" propagation="required" rollback-for="java.lang.exception"/>
     </tx:attributes>
  </tx:advice>
   
</beans>

配置springmvc.xml文件

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<?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-3.1.xsd 
            http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.1.xsd 
            http://www.springframework.org/schema/mvc 
            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
   
  <!-- 自动扫描 -->
  <context:component-scan base-package="com.lr.controller" />
   
  <mvc:annotation-driven />
  
  <mvc:default-servlet-handler/>
  
  <!-- 定义跳转的文件的前后缀 ，视图模式配置-->
  <bean class="org.springframework.web.servlet.view.internalresourceviewresolver">
    
    <property name="prefix" value="/web-inf/jsp/" />
    <property name="suffix" value=".jsp" />
  </bean>

好了！！！需要配置的文件已经配置完成了，足够我们进行一波操作了

接下来是后台的一些代码，这里主要是实体类，dao层，service层，controller层，我把后台的文件一起上传了，mapper.xml文件是实现方法最关键的地方

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<?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.lr.dao.iuserdao">
  <resultmap id="baseresultmap" type="com.lr.dto.user">
    <result column="id" property="id" jdbctype="integer" />
    <result column="name" property="name" jdbctype="varchar" />
    <result column="password" property="password" jdbctype="varchar" />
    <result column="age" property="age" jdbctype="integer" />
  </resultmap>
  
  <sql id="base_column_list">
    id, name, password, age
  </sql>
  
  
   <!--  增加用户 -->
   <insert id="adduser" parametertype="com.lr.dto.user">
    insert into user(name,password,age) values(#{name},#{password},#{age})
  </insert>
  
   <!-- 查询用户-->
  <select id="querybyprimarykey" resultmap="baseresultmap"
    parametertype="java.lang.integer">
    select
    <include refid="base_column_list" />
    from user
    where id = #{id}
  </select>
  
  
   <!-- 删除用户 -->
  <delete id="deletebyprimarykey" parametertype="java.lang.integer">
    delete from user
    where id = #{id} 
  </delete>
  
  
  <!-- 更新用户 -->
  <update id="updatebyprimarykey" parametertype="com.lr.dto.user" > 
    update user set name=#{name},password=#{password},age=#{age} where id=#{id}
  </update>
  
  <select id="findalluser" resulttype="com.lr.dto.user">
    select * from user
  </select>
  
</mapper>
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package com.lr.dao;
 
import java.util.list;
 
import com.lr.dto.user;
 
public interface iuserdao {
   //查询用户
  public user querybyprimarykey(int id);
   //删除用户
  public int deletebyprimarykey(int id);
  //更新用户
  public int updatebyprimarykey(user user);
  //添加用户
  public int adduser(user user);
  //查询所有用户
  public list<user> findalluser();
}
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package com.lr.service;
 
import java.util.list;
 
import com.lr.dto.user;
 
public interface iuserservice {
  //查询用户
   public user getuserbyid(int userid);
   //删除
   public void deleteuser(int id);
   //更新用户
   public void updateuser(user user);
  //添加用户
   public void adduser(user user);
   //查看所有用户
   public list<user> findalluser();
}
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package com.lr.service.impl;
 
import java.util.list;
 
import javax.annotation.resource;
 
import org.springframework.stereotype.service;
 
import com.lr.dao.iuserdao;
import com.lr.dto.user;
import com.lr.service.iuserservice;
@service("userservice")
public class userserviceimpl implements iuserservice{
  @resource
  private iuserdao userdao;
  
  public iuserdao getuserdao() {
    return userdao;
  }
  public void setuserdao(iuserdao userdao) {
    this.userdao = userdao;
  }
  //查询用户
  @override
  public user getuserbyid(int userid) {
    
    return userdao.querybyprimarykey(userid);
  }
  //更新用户
  @override
  public void updateuser(user user) {
    userdao.updatebyprimarykey(user);
    
  }
  //删除用户
  @override
  public void deleteuser(int id) {
    
    userdao.deletebyprimarykey(id);
  }
  
  //添加用户
  @override
  public void adduser(user user) {
    
    userdao.adduser(user);
  }
  
  //查询所有用户
  @override
  public list<user> findalluser() {
    
    return userdao.findalluser();
  }
}
?
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package com.lr.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.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.responsebody;
 
import com.lr.dto.user;
import com.lr.service.iuserservice;
 
@controller
public class usercontroller {
  @autowired
  private iuserservice userservice;
  
  public iuserservice getuserservice() {
    return userservice;
  }
  public void setuserservice(iuserservice userservice) {
    this.userservice = userservice;
  }
  
  //主页面
  @requestmapping("/")
  public string usermgr() {
    return "showuser";
  }
  
  //添加用户
  @requestmapping("/adduser")
  @responsebody
  public void useradd(user user) {
    userservice.adduser(user);
  }
  
  //删除用户
  @requestmapping("/deleteuser")
  @responsebody
  public void deleteuser(int id){
    userservice.deleteuser(id);
  }
  
  //修改用户
  @requestmapping("/updateuser")
  @responsebody
  public void upadteuser(user user){
    
    userservice.updateuser(user);
    
  }
  //根据id查找用户
  @requestmapping("/showuser")
  @responsebody
  public user showuser(int id,model model){
     return userservice.getuserbyid(id);    
  }
  
  //查询所有用户
  @requestmapping("/findalluser")
  @responsebody
  public list<user> findalluser(){
    return userservice.findalluser();
  }
}
?
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<%@ page language="java" import="java.util.*" pageencoding="utf-8"%>
 
<!doctype html>
<html>
 <head> 
  <meta charset="utf-8"><script type="text/javascript" src="<%= application.getcontextpath() %>/js/jquery-1.12.4.min.js"></script>
  <script type="text/javascript">
  
  
  
  //添加用户
    $(function(){
      $("#add").on("click", addnewuser);   
    })
    function addnewuser(){
      var name = $.trim($("#txtname").val());
      var password = $.trim($("#txtpassword").val());
      var age = $.trim($("#txtage").val());
      
      $.post("/ssm/adduser", {"name": name, "password": password, "age": age}, function(){
        alert("添加成功！")
      });
    }
    
    
    
  //删除用户
    $(function(){
      $("#delete").on("click",deleteuser);
    })
    function deleteuser(){
      var id=$.trim($("#deleteid").val());
      $.get("/ssm/deleteuser",{"id":id},function(){
        alert("删除成功！")
      });
    }
    
    
  //查询所有用户
    $(function(){
      $("#findalluser").click(function(){
        $.ajax({
          type:"post",
          datatype:"json",
          url:"/ssm/findalluser",
          success:function(msg){
            var str="";
            for(i in msg){
              str+="<tr><th>"+msg[i].id+"</th><th>"+msg[i].name+"</th><th>"
              +msg[i].password+"</th><th>"+msg[i].age+"</th><tr>"
            }
            $("#findall").append(str);
          }
        });
      });
    });
    
    
    //根据id查找一个用户
    
    $(function(){
      $("#find").click(function(){
        $.ajax({
          type:"post",
          data:{id:$("#findid").val()},
          datatype:"json",
          url:"/ssm/showuser",
          success:function(user){
            var str="";
              str+="<tr><th>"+user.id+"</th><th>"+user.name+"</th><th>"
              +user.password+"</th><th>"+user.age+"</th><tr>"
            $("#finduserbyid").append(str);
          }
          
        })
      })
    })
    
    
    //根据id修改用户信息
    $(function(){
      $("#update").on("click",updateuser);
    })
    function updateuser(){
       alert($.trim($("#updateid").val()))
      alert($.trim($("#updatename").val()))
      alert($.trim($("#updatepassword").val()))
      alert($.trim($("#updateage").val()))
    
      var id=$.trim($("#updateid").val());
      var name=$.trim($("#updatename").val());
      var password=$.trim($("#updatepassword").val());
      var age=$.trim($("#updateage").val());
      $.post("/ssm/updateuser",{"id":id,"name":name,"password":password,"age":age},function(){
        alert("修改成功！")
      });
    }
  </script>
  
  
 <title>用户管理</title> 
 </head>
 <body>
  <div>
    <p>姓名：<input type="text" id="txtname"></p>
    <p>密码：<input type="password" id="txtpassword"></p>
    <p>年龄：<input type="text" id="txtage"></p>
    <p><button id="add">添加</button></p>
  </div>
  <hr style="height:1px;border:none;border-top:1px dashed #0066cc;" />
  
  <div>
    <p>输入用户id:<input type="text" id="deleteid"></p>
    <p><button id="delete">删除</button></p>
  </div>
  
  <hr style="height:1px;border:none;border-top:1px dashed #0066cc;" />
  
  <div><p><button id="findalluser">查询所有</button></p></div>
  <div>
    <table width="300" border="1" >
      <thead id="findall">
        <tr>
          <th width="50">id</th>
          <th width="50">姓名</th>
          <th width="50">密码</th>
          <th width="50">年龄</th>
        </tr>
      </thead>
    </table>
  </div>
  <hr style="height:1px;border:none;border-top:1px dashed #0066cc;" />
  
  <div>
    <p>输入用户id:<input type="text" id="findid"></p>
    <p><button id="find">查询</button></p>
  </div>
   <div>
    <table width="300" border="1" >
      <thead id="finduserbyid">
        <tr>
          <th width="50">id</th>
          <th width="50">姓名</th>
          <th width="50">密码</th>
          <th width="50">年龄</th>
        </tr>
      </thead>
    </table>
  </div>
  <hr style="height:1px;border:none;border-top:1px dashed #0066cc;" />
  <div>
    <p>输入用户id:<input type="text" id="updateid"></p>
    <p>输入用户姓名:<input type="text" id="updatename"></p>
    <p>输入密码：<input type="password" id="updatepassword"></p>
    <p>输入用户年龄:<input type="password" id="updateage"></p>
    <p><button id="update">修改</button></p>
  </div>
 </body>
</html>

原文链接：https://www.cnblogs.com/zuidongfeng/p/7903570.html

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