最近段时间正在学习Spring MVC和MyBatis的一些知识。自己也在网络上面找了一些例子来练习。但是都不是很完整。所以，今天，自己也抽空写了个完成的关于Spring MVC + Spring + MyBatis（简称 SSM）的一个CRUD的完整Web 演示例子。如果你也是刚好学习这几个框架的新手，或许我做的这个例子对你刚好有所帮助哦！

[caption id="" align="aligncenter" width="275"] 演示工程的目录结构[/caption]

[caption id="" align="aligncenter" width="550"] 添加数据页面[/caption]

[caption id="" align="aligncenter" width="550"] 修改数据的页面[/caption]

[caption id="" align="aligncenter" width="550"] 查询出的数据列表[/caption]

下面来说下这个演示的小例子。首先，我是使用MyEclipse工具做的这个例子，整合了Sping 3 、Spring MVC 3 、MyBatis框架，演示数据库采用MySQL数据库。例子中主要操作包括对数据的添加（C）、查找（R）、更新（U）、删除（D）。我在这里采用的数据库连接池是来自阿里巴巴的Druid，至于Druid的强大之处，我在这里就不做过多的解释了，有兴趣的朋友们可以去网上谷歌或者百度一下哦！好了下面我就贴上这次这个演示例子的关键代码：

BaseController

package com.bky.controller;

import java.util.List;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.bky.model.Add;
import com.bky.service.BaseService;

@Controller
public class BaseController {

	private BaseService baseService;

	public BaseService getBaseService() {
		return baseService;
	}
	@Autowired
	public void setBaseService(BaseService baseService) {
		this.baseService = baseService;
	}

	@SuppressWarnings("finally")
	@RequestMapping("addInfo")
	public String add(Add add,HttpServletRequest request){
		try {			
			add.setId(UUID.randomUUID().toString());
			System.out.println(add.getId() + ":::::" + add.getTname() + ":::::" + add.getTpwd());
			String str = baseService.addInfo(add);
			System.out.println(str);
			request.setAttribute("InfoMessage", str);
		} catch (Exception e) {
			e.printStackTrace();
			request.setAttribute("InfoMessage", "添加信息失败！具体异常信息：" + e.getMessage());
		} finally {			
			return "result";
		}
	}

	@RequestMapping("getAll")
	public String getAddInfoAll(HttpServletRequest request){
		try {			
			List<Add> list = baseService.getAll();
			System.out.println(list);
			request.setAttribute("addLists", list);
			return "listAll";
		} catch (Exception e) {
			e.printStackTrace();
			request.setAttribute("InfoMessage", "信息载入失败！具体异常信息：" + e.getMessage());
			return "result";
		}
	}

	@SuppressWarnings("finally")
	@RequestMapping("del")
	public String del(String tid,HttpServletRequest request){
		try {			
			String str = baseService.delete(tid);
			request.setAttribute("InfoMessage", str);
		} catch (Exception e) {
			e.printStackTrace();
			request.setAttribute("InfoMessage", "删除信息失败！具体异常信息：" + e.getMessage());
		} finally {			
			return "result";
		}
	}
	@RequestMapping("modify")
	public String modify(String tid,HttpServletRequest request){
		try {			
			Add add = baseService.findById(tid);
			request.setAttribute("add", add);
			return "modify";
		} catch (Exception e) {
			e.printStackTrace();
			request.setAttribute("InfoMessage", "信息载入失败！具体异常信息：" + e.getMessage());
			return "result";
		}
	}
	@SuppressWarnings("finally")
	@RequestMapping("update")
	public String update(Add add,HttpServletRequest request){
		try {			
			String str = baseService.update(add);
			request.setAttribute("InfoMessage", str);
		} catch (Exception e) {
			e.printStackTrace();
			request.setAttribute("InfoMessage", "更新信息失败！具体异常信息：" + e.getMessage());
		} finally {			
			return "result";
		}
	}

}

Service的实现

package com.bky.service.impl;

import java.util.List;
import java.util.UUID;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.bky.dao.AddMapper;
import com.bky.model.Add;
import com.bky.service.BaseService;

@Service("baseService")
public class BaseServiceImpl implements BaseService {

	private AddMapper addMapper;

	public AddMapper getAddMapper() {
		return addMapper;
	}
	@Autowired
	public void setAddMapper(AddMapper addMapper) {
		this.addMapper = addMapper;
	}

	@Override
	public String addInfo(Add addInfo) {
		if (addMapper.insertSelective(addInfo) == 1) {
			return "添加成功";
		}
		return "添加失败";
	}
	@Override
	public List<Add> getAll() {
		return addMapper.getAll();
	}
	@Override
	public String delete(String id) {
		if (addMapper.deleteByPrimaryKey(id) == 1) {
			return "删除成功";
		}
		return "删除失败";
	}
	@Override
	public Add findById(String id) {
		return addMapper.selectByPrimaryKey(id);
	}
	@Override
	public String update(Add addInfo) {
		if (addMapper.updateByPrimaryKeySelective(addInfo) == 1) {
			return "更新成功";
		}
		return "更新失败";
	}

}

Mapper

<?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.bky.dao.AddMapper" >
  <resultMap id="BaseResultMap" type="com.bky.model.Add" >
    <id column="id" property="id" jdbcType="VARCHAR" />
    <result column="tname" property="tname" jdbcType="VARCHAR" />
    <result column="tpwd" property="tpwd" jdbcType="VARCHAR" />
  </resultMap>
  <sql id="Base_Column_List" >
    id, tname, tpwd
  </sql>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" >
    select 
    <include refid="Base_Column_List" />
    from tadd
    where id = #{id,jdbcType=VARCHAR}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.String" >
    delete from tadd
    where id = #{id,jdbcType=VARCHAR}
  </delete>
  <insert id="insert" parameterType="com.bky.model.Add" >
    insert into tadd (id, tname, tpwd
      )
    values (#{id,jdbcType=VARCHAR}, #{tname,jdbcType=VARCHAR}, #{tpwd,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.bky.model.Add" >
    insert into tadd
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="tname != null" >
        tname,
      </if>
      <if test="tpwd != null" >
        tpwd,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=VARCHAR},
      </if>
      <if test="tname != null" >
        #{tname,jdbcType=VARCHAR},
      </if>
      <if test="tpwd != null" >
        #{tpwd,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="com.bky.model.Add" >
    update tadd
    <set >
      <if test="tname != null" >
        tname = #{tname,jdbcType=VARCHAR},
      </if>
      <if test="tpwd != null" >
        tpwd = #{tpwd,jdbcType=VARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=VARCHAR}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.bky.model.Add" >
    update tadd
    set tname = #{tname,jdbcType=VARCHAR},
      tpwd = #{tpwd,jdbcType=VARCHAR}
    where id = #{id,jdbcType=VARCHAR}
  </update>

  <select id="getAll" resultMap="BaseResultMap">
  	SELECT * FROM tadd
  </select>
</mapper>

以上就是几个关键位置的代码，我全部贴出来了。至于配置文件什么的，由于时间原因没有贴出。如果大家要是感兴趣的话，可以下载我的这个演示项目包，里面的东西都齐全着，导入到MyEclipse上面直接部署到服务器上面就可以运行。数据库就是里面的那个.sql文件。建个库然后将数据导入就是。哦，对了。导完数据后，记得别忘了到config.properties里面去把数据库的连接信息换成你自己哦！

本次演示例子源码完整下载：http://pan.baidu.com/s/1jDA2q（百度网盘）

假如百度云分享链接失效，请联系站长，我会补上的。

好了。到这里为止，关于 SSM框架整合的一个CRUD的完整Web例子到此就结束了。如果你在阅读代码的时候有什么疑惑或者不懂，欢迎和我探讨哦！