SSM整合介绍

其他 2018-05-10 12:08:46 阅读次数: 0

SSM整合

- jar包整合

Mybatis所需要的jar有(我这里使用的是Mybatis3.27)
首先是Mybatis的核心jar包：mybatis.jar。
然后是Mybatis的一些依赖包：这些包主要都是一些日志包
MySQL的驱动包：mysql-connection-java.jar

这是导入jar包的截图

数据库连接池包：这里采用C3p0连接池com.springsource.com.mchange.v2.c3p0-0.9.1.2.jar
MyBatis整合Spring的jar包：mybatis-spring-1.2.2.jar

Spring所需要的jar包
Spring和SpringMVC所需要的核心包：

这里写图片描述

aop联盟的jar包：com.springsource.org.aopalliance-1.0.0.jar
切面编程的jar包：com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
在前端页面需要使用c标签所需要的jstl的包：jstl-1.2.jar

需求分析

从数据库中查询商品信息，并在首页显示所有的商品；首页提供对商品的删除、批量删除、修改商品等功能的实现。

数据准备：

这里写图片描述

创建工程并导入jar包：

这里写图片描述

通过MyBatis的逆向工程生成Java代码：

生成的JavaBean：Items

public class Items {
    private Integer id;

    private String name;

    private Float price;

    private String pic;

    private Date createtime;

    private String 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();
    }
}

生成的ItemsExample类：

public class ItemsExample {
    protected String orderByClause;

    protected boolean distinct;

    protected List<Criteria> oredCriteria;

    public ItemsExample() {
        oredCriteria = new ArrayList<Criteria>();
    }

    public void setOrderByClause(String orderByClause) {
        this.orderByClause = orderByClause;
    }

    public String getOrderByClause() {
        return orderByClause;
    }

    public void setDistinct(boolean distinct) {
        this.distinct = distinct;
    }

    public boolean isDistinct() {
        return distinct;
    }

    public List<Criteria> getOredCriteria() {
        return oredCriteria;
    }

    public void or(Criteria criteria) {
        oredCriteria.add(criteria);
    }

    public Criteria or() {
        Criteria criteria = createCriteriaInternal();
        oredCriteria.add(criteria);
        return criteria;
    }

    public Criteria createCriteria() {
        Criteria criteria = createCriteriaInternal();
        if (oredCriteria.size() == 0) {
            oredCriteria.add(criteria);
        }
        return criteria;
    }

    protected Criteria createCriteriaInternal() {
        Criteria criteria = new Criteria();
        return criteria;
    }

    public void clear() {
        oredCriteria.clear();
        orderByClause = null;
        distinct = false;
    }

    protected abstract static class GeneratedCriteria {
        protected List<Criterion> criteria;

        protected GeneratedCriteria() {
            super();
            criteria = new ArrayList<Criterion>();
        }

        public boolean isValid() {
            return criteria.size() > 0;
        }

        public List<Criterion> getAllCriteria() {
            return criteria;
        }

        public List<Criterion> getCriteria() {
            return criteria;
        }

        protected void addCriterion(String condition) {
            if (condition == null) {
                throw new RuntimeException("Value for condition cannot be null");
            }
            criteria.add(new Criterion(condition));
        }

        protected void addCriterion(String condition, Object value, String property) {
            if (value == null) {
                throw new RuntimeException("Value for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value));
        }

        protected void addCriterion(String condition, Object value1, Object value2, String property) {
            if (value1 == null || value2 == null) {
                throw new RuntimeException("Between values for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value1, value2));
        }

        public Criteria andIdIsNull() {
            addCriterion("id is null");
            return (Criteria) this;
        }

        public Criteria andIdIsNotNull() {
            addCriterion("id is not null");
            return (Criteria) this;
        }

        public Criteria andIdEqualTo(Integer value) {
            addCriterion("id =", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdNotEqualTo(Integer value) {
            addCriterion("id <>", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdGreaterThan(Integer value) {
            addCriterion("id >", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdGreaterThanOrEqualTo(Integer value) {
            addCriterion("id >=", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdLessThan(Integer value) {
            addCriterion("id <", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdLessThanOrEqualTo(Integer value) {
            addCriterion("id <=", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdIn(List<Integer> values) {
            addCriterion("id in", values, "id");
            return (Criteria) this;
        }

        public Criteria andIdNotIn(List<Integer> values) {
            addCriterion("id not in", values, "id");
            return (Criteria) this;
        }

        public Criteria andIdBetween(Integer value1, Integer value2) {
            addCriterion("id between", value1, value2, "id");
            return (Criteria) this;
        }

        public Criteria andIdNotBetween(Integer value1, Integer value2) {
            addCriterion("id not between", value1, value2, "id");
            return (Criteria) this;
        }

        public Criteria andNameIsNull() {
            addCriterion("name is null");
            return (Criteria) this;
        }

        public Criteria andNameIsNotNull() {
            addCriterion("name is not null");
            return (Criteria) this;
        }

        public Criteria andNameEqualTo(String value) {
            addCriterion("name =", value, "name");
            return (Criteria) this;
        }

        public Criteria andNameNotEqualTo(String value) {
            addCriterion("name <>", value, "name");
            return (Criteria) this;
        }

        public Criteria andNameGreaterThan(String value) {
            addCriterion("name >", value, "name");
            return (Criteria) this;
        }

        public Criteria andNameGreaterThanOrEqualTo(String value) {
            addCriterion("name >=", value, "name");
            return (Criteria) this;
        }

        public Criteria andNameLessThan(String value) {
            addCriterion("name <", value, "name");
            return (Criteria) this;
        }

        public Criteria andNameLessThanOrEqualTo(String value) {
            addCriterion("name <=", value, "name");
            return (Criteria) this;
        }

        public Criteria andNameLike(String value) {
            addCriterion("name like", value, "name");
            return (Criteria) this;
        }

        public Criteria andNameNotLike(String value) {
            addCriterion("name not like", value, "name");
            return (Criteria) this;
        }

        public Criteria andNameIn(List<String> values) {
            addCriterion("name in", values, "name");
            return (Criteria) this;
        }

        public Criteria andNameNotIn(List<String> values) {
            addCriterion("name not in", values, "name");
            return (Criteria) this;
        }

        public Criteria andNameBetween(String value1, String value2) {
            addCriterion("name between", value1, value2, "name");
            return (Criteria) this;
        }

        public Criteria andNameNotBetween(String value1, String value2) {
            addCriterion("name not between", value1, value2, "name");
            return (Criteria) this;
        }

        public Criteria andPriceIsNull() {
            addCriterion("price is null");
            return (Criteria) this;
        }

        public Criteria andPriceIsNotNull() {
            addCriterion("price is not null");
            return (Criteria) this;
        }

        public Criteria andPriceEqualTo(Float value) {
            addCriterion("price =", value, "price");
            return (Criteria) this;
        }

        public Criteria andPriceNotEqualTo(Float value) {
            addCriterion("price <>", value, "price");
            return (Criteria) this;
        }

        public Criteria andPriceGreaterThan(Float value) {
            addCriterion("price >", value, "price");
            return (Criteria) this;
        }

        public Criteria andPriceGreaterThanOrEqualTo(Float value) {
            addCriterion("price >=", value, "price");
            return (Criteria) this;
        }

        public Criteria andPriceLessThan(Float value) {
            addCriterion("price <", value, "price");
            return (Criteria) this;
        }

        public Criteria andPriceLessThanOrEqualTo(Float value) {
            addCriterion("price <=", value, "price");
            return (Criteria) this;
        }

        public Criteria andPriceIn(List<Float> values) {
            addCriterion("price in", values, "price");
            return (Criteria) this;
        }

        public Criteria andPriceNotIn(List<Float> values) {
            addCriterion("price not in", values, "price");
            return (Criteria) this;
        }

        public Criteria andPriceBetween(Float value1, Float value2) {
            addCriterion("price between", value1, value2, "price");
            return (Criteria) this;
        }

        public Criteria andPriceNotBetween(Float value1, Float value2) {
            addCriterion("price not between", value1, value2, "price");
            return (Criteria) this;
        }

        public Criteria andPicIsNull() {
            addCriterion("pic is null");
            return (Criteria) this;
        }

        public Criteria andPicIsNotNull() {
            addCriterion("pic is not null");
            return (Criteria) this;
        }

        public Criteria andPicEqualTo(String value) {
            addCriterion("pic =", value, "pic");
            return (Criteria) this;
        }

        public Criteria andPicNotEqualTo(String value) {
            addCriterion("pic <>", value, "pic");
            return (Criteria) this;
        }

        public Criteria andPicGreaterThan(String value) {
            addCriterion("pic >", value, "pic");
            return (Criteria) this;
        }

        public Criteria andPicGreaterThanOrEqualTo(String value) {
            addCriterion("pic >=", value, "pic");
            return (Criteria) this;
        }

        public Criteria andPicLessThan(String value) {
            addCriterion("pic <", value, "pic");
            return (Criteria) this;
        }

        public Criteria andPicLessThanOrEqualTo(String value) {
            addCriterion("pic <=", value, "pic");
            return (Criteria) this;
        }

        public Criteria andPicLike(String value) {
            addCriterion("pic like", value, "pic");
            return (Criteria) this;
        }

        public Criteria andPicNotLike(String value) {
            addCriterion("pic not like", value, "pic");
            return (Criteria) this;
        }

        public Criteria andPicIn(List<String> values) {
            addCriterion("pic in", values, "pic");
            return (Criteria) this;
        }

        public Criteria andPicNotIn(List<String> values) {
            addCriterion("pic not in", values, "pic");
            return (Criteria) this;
        }

        public Criteria andPicBetween(String value1, String value2) {
            addCriterion("pic between", value1, value2, "pic");
            return (Criteria) this;
        }

        public Criteria andPicNotBetween(String value1, String value2) {
            addCriterion("pic not between", value1, value2, "pic");
            return (Criteria) this;
        }

        public Criteria andCreatetimeIsNull() {
            addCriterion("createtime is null");
            return (Criteria) this;
        }

        public Criteria andCreatetimeIsNotNull() {
            addCriterion("createtime is not null");
            return (Criteria) this;
        }

        public Criteria andCreatetimeEqualTo(Date value) {
            addCriterion("createtime =", value, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeNotEqualTo(Date value) {
            addCriterion("createtime <>", value, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeGreaterThan(Date value) {
            addCriterion("createtime >", value, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeGreaterThanOrEqualTo(Date value) {
            addCriterion("createtime >=", value, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeLessThan(Date value) {
            addCriterion("createtime <", value, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeLessThanOrEqualTo(Date value) {
            addCriterion("createtime <=", value, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeIn(List<Date> values) {
            addCriterion("createtime in", values, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeNotIn(List<Date> values) {
            addCriterion("createtime not in", values, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeBetween(Date value1, Date value2) {
            addCriterion("createtime between", value1, value2, "createtime");
            return (Criteria) this;
        }

        public Criteria andCreatetimeNotBetween(Date value1, Date value2) {
            addCriterion("createtime not between", value1, value2, "createtime");
            return (Criteria) this;
        }
    }

    public static class Criteria extends GeneratedCriteria {

        protected Criteria() {
            super();
        }
    }

    public static class Criterion {
        private String condition;

        private Object value;

        private Object secondValue;

        private boolean noValue;

        private boolean singleValue;

        private boolean betweenValue;

        private boolean listValue;

        private String typeHandler;

        public String getCondition() {
            return condition;
        }

        public Object getValue() {
            return value;
        }

        public Object getSecondValue() {
            return secondValue;
        }

        public boolean isNoValue() {
            return noValue;
        }

        public boolean isSingleValue() {
            return singleValue;
        }

        public boolean isBetweenValue() {
            return betweenValue;
        }

        public boolean isListValue() {
            return listValue;
        }

        public String getTypeHandler() {
            return typeHandler;
        }

        protected Criterion(String condition) {
            super();
            this.condition = condition;
            this.typeHandler = null;
            this.noValue = true;
        }

        protected Criterion(String condition, Object value, String typeHandler) {
            super();
            this.condition = condition;
            this.value = value;
            this.typeHandler = typeHandler;
            if (value instanceof List<?>) {
                this.listValue = true;
            } else {
                this.singleValue = true;
            }
        }

        protected Criterion(String condition, Object value) {
            this(condition, value, null);
        }

        protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
            super();
            this.condition = condition;
            this.value = value;
            this.secondValue = secondValue;
            this.typeHandler = typeHandler;
            this.betweenValue = true;
        }

        protected Criterion(String condition, Object value, Object secondValue) {
            this(condition, value, secondValue, null);
        }
    }
}

生成的Mapper接口类：ItemsMapper

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);
}

生成的Mapper接口的映射文件：ItemsMapper.xml

<?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.lc.dao.ItemsMapper" >
  <resultMap id="BaseResultMap" type="com.lc.po.Items" >
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="name" property="name" jdbcType="VARCHAR" />
    <result column="price" property="price" jdbcType="REAL" />
    <result column="pic" property="pic" jdbcType="VARCHAR" />
    <result column="createtime" property="createtime" jdbcType="TIMESTAMP" />
  </resultMap>
  <resultMap id="ResultMapWithBLOBs" type="com.lc.po.Items" extends="BaseResultMap" >
    <result column="detail" property="detail" jdbcType="LONGVARCHAR" />
  </resultMap>
  <sql id="Example_Where_Clause" >
    <where >
      <foreach collection="oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause" >
    <where >
      <foreach collection="example.oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List" >
    id, name, price, pic, createtime
  </sql>
  <sql id="Blob_Column_List" >
    detail
  </sql>
  <select id="selectByExampleWithBLOBs" resultMap="ResultMapWithBLOBs" parameterType="com.lc.po.ItemsExample" >
    select
    <if test="distinct" >
      distinct
    </if>
    <include refid="Base_Column_List" />
    ,
    <include refid="Blob_Column_List" />
    from items
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null" >
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByExample" resultMap="BaseResultMap" parameterType="com.lc.po.ItemsExample" >
    select
    <if test="distinct" >
      distinct
    </if>
    <include refid="Base_Column_List" />
    from items
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null" >
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" resultMap="ResultMapWithBLOBs" parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    ,
    <include refid="Blob_Column_List" />
    from items
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from items
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <delete id="deleteByExample" parameterType="com.lc.po.ItemsExample" >
    delete from items
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.lc.po.Items" >
    insert into items (id, name, price, 
      pic, createtime, detail
      )
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{price,jdbcType=REAL}, 
      #{pic,jdbcType=VARCHAR}, #{createtime,jdbcType=TIMESTAMP}, #{detail,jdbcType=LONGVARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="com.lc.po.Items" >
    insert into items
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="name != null" >
        name,
      </if>
      <if test="price != null" >
        price,
      </if>
      <if test="pic != null" >
        pic,
      </if>
      <if test="createtime != null" >
        createtime,
      </if>
      <if test="detail != null" >
        detail,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="name != null" >
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="price != null" >
        #{price,jdbcType=REAL},
      </if>
      <if test="pic != null" >
        #{pic,jdbcType=VARCHAR},
      </if>
      <if test="createtime != null" >
        #{createtime,jdbcType=TIMESTAMP},
      </if>
      <if test="detail != null" >
        #{detail,jdbcType=LONGVARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.lc.po.ItemsExample" resultType="java.lang.Integer" >
    select count(*) from items
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map" >
    update items
    <set >
      <if test="record.id != null" >
        id = #{record.id,jdbcType=INTEGER},
      </if>
      <if test="record.name != null" >
        name = #{record.name,jdbcType=VARCHAR},
      </if>
      <if test="record.price != null" >
        price = #{record.price,jdbcType=REAL},
      </if>
      <if test="record.pic != null" >
        pic = #{record.pic,jdbcType=VARCHAR},
      </if>
      <if test="record.createtime != null" >
        createtime = #{record.createtime,jdbcType=TIMESTAMP},
      </if>
      <if test="record.detail != null" >
        detail = #{record.detail,jdbcType=LONGVARCHAR},
      </if>
    </set>
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExampleWithBLOBs" parameterType="map" >
    update items
    set id = #{record.id,jdbcType=INTEGER},
      name = #{record.name,jdbcType=VARCHAR},
      price = #{record.price,jdbcType=REAL},
      pic = #{record.pic,jdbcType=VARCHAR},
      createtime = #{record.createtime,jdbcType=TIMESTAMP},
      detail = #{record.detail,jdbcType=LONGVARCHAR}
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map" >
    update items
    set id = #{record.id,jdbcType=INTEGER},
      name = #{record.name,jdbcType=VARCHAR},
      price = #{record.price,jdbcType=REAL},
      pic = #{record.pic,jdbcType=VARCHAR},
      createtime = #{record.createtime,jdbcType=TIMESTAMP},
      detail = #{detail}
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="com.lc.po.Items" >
    update items
    <set >
      <if test="name != null" >
        name = #{name,jdbcType=VARCHAR},
      </if>
      <if test="price != null" >
        price = #{price,jdbcType=REAL},
      </if>
      <if test="pic != null" >
        pic = #{pic,jdbcType=VARCHAR},
      </if>
      <if test="createtime != null" >
        createtime = #{createtime,jdbcType=TIMESTAMP},
      </if>
      <if test="detail != null" >
        detail = #{detail,jdbcType=LONGVARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKeyWithBLOBs" parameterType="com.lc.po.Items" >
    update items
    set name = #{name,jdbcType=VARCHAR},
      price = #{price,jdbcType=REAL},
      pic = #{pic,jdbcType=VARCHAR},
      createtime = #{createtime,jdbcType=TIMESTAMP},
      detail = #{detail,jdbcType=LONGVARCHAR}
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.lc.po.Items" >
    update items
    set name = #{name,jdbcType=VARCHAR},
      price = #{price,jdbcType=REAL},
      pic = #{pic,jdbcType=VARCHAR},
      detail = #{detail},
      createtime = #{createtime,jdbcType=TIMESTAMP}
    where id = #{id,jdbcType=INTEGER}
  </update>
编写web.xml配置文件：

在web.xml配置文件中配置Spring的监听器和SpringMVC的控制器和解决POST乱码的过滤器

<?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_2_5.xsd"
    id="WebApp_ID" version="2.5">
    <display-name>springmvc_demo03_ssm</display-name>

    <!-- 添加编码过滤器，该编码过滤器主要功能是解决POST请求的编码风格 -->
    <filter>
        <filter-name>characterEncoding</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>characterEncoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- 配置springmvc控制器-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 默认加载方式 默认加载必须规范： * 文件命名：servlet-name-servlet.xml====springmvc-servlet.xml 
            * 路径规范：必须在WEB-INF目录下面 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>

    <!-- 添加Spring配置文件位置和spring的监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>


    <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>
</web-app>
配置spring配置文件applicationContext.xml

在spring配置文件中配置的主要有：开启注解扫描、数据源、配置SqlSessionFactory、配置MyBatis接口代理、配置事务管理。

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.2.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
    <!-- 开启注解扫描 -->
    <context:component-scan base-package="com.lc"></context:component-scan>

    <!-- 第一步：配置数据源 -->
    <context:property-placeholder location="classpath:db.properties"/>
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${db.driver}"></property>
        <property name="jdbcUrl" value="${db.url}"></property>
        <property name="user" value="${db.username}"></property>
        <property name="password" value="${db.password}"></property>
    </bean>


    <!-- 第二步：配置sqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:sqlMapConfig.xml"></property>
    </bean>
    <!-- 配置Mybatis接口代理 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.lc.dao"></property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>



    <!-- 第三步：配置事务管理 -->
    <!-- 配置事务管理器 -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 配置事务通知 -->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <!-- aop编程 -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.lc.service.*.*(..))"/>
    </aop:config>
</beans>
配置springmvc配置文件springmvc.xml：

springmvc配置文件需要开启注解扫描、开启springmvc注解、springmvc视图解析器

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.2.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

    <context:component-scan base-package="com.lc"></context:component-scan>
    <!-- 开启springmvc注解 -->
    <mvc:annotation-driven>
    </mvc:annotation-driven>


    <!-- 配置sprigmvc视图解析器：解析逻辑试图 后台返回逻辑试图：index -->
    <!--视图解析器解析出真正物理视图：前缀+逻辑试图+后缀====/WEB-INF/jsps/index.jsp -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsps/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean> 
</beans>
创建Service层，并对商品的查询、修改等方法实现

service接口：ItemsService

public interface ItemsService {

    //查询所有商品
    List<Items> findAllItems();
    //根据id查找商品
    Items findItemById(Integer id);
    //修改商品
    void updateItems(Items items);
    //删除商品
    void deleteItem(Integer id);

}

service接口实现类：ItemsServiceImpl

@Service
public class ItemsServiceImpl implements ItemsService{

    //注入dao层的mapper接口
    @Resource
    private ItemsMapper itemsMapper;


    @Override
    public List<Items> findAllItems() {
        return itemsMapper.findAll();
    }


    @Override
    public Items findItemById(Integer id) {
        return itemsMapper.selectByPrimaryKey(id);
    }


    @Override
    public void updateItems(Items items) {
        itemsMapper.updateByPrimaryKey(items);
    }


    @Override
    public void deleteItem(Integer id) {
        itemsMapper.deleteByPrimaryKey(id);
    }


}

在Service层中查询所有，该方法在MyBatis逆向工程中没有生成，因此，我们去添加：

    //查询所有商品信息
    List<Items> findAll();

在ItemsMapper.xml添加该sql：

<!-- 查询所有 -->
  <select id="findAll" resultMap="BaseResultMap">
    SELECT * FROM ITEMS
  </select>
创建控制器类Controller并实现其方法：ItemsController

修改商品信息我采用的是REST风格

@Controller
@RequestMapping("/items")
public class ItemsController {
    //注入Service层
    @Resource
    private ItemsService itmesService;

    //查询所有商品
    @RequestMapping("findAll")
    public String findAllItems(Model model){
        List<Items> itemsList = itmesService.findAllItems();
        model.addAttribute("itemsList", itemsList);
        return "itemsList";
    }

    //获取需要修改的商品并跳转到修改界面回显修改的类容
    @RequestMapping("/editItem/{id}")
    public String editItem(@PathVariable Integer id,Model model){
        Items item = itmesService.findItemById(id);
        model.addAttribute("item", item);
        return "editItem";
    }

    //修改商品
    @RequestMapping("updateItem")
    public String updateItem(Items items){
        itmesService.updateItems(items);
        return "redirect:/items/findAll.do";//重定向到list.do
    }

    //删除商品
    @RequestMapping("/deleteItem/{id}")
    public String deleteItem(@PathVariable Integer id){
        itmesService.deleteItem(id);
        return "redirect:/items/findAll.do";
    }

    //批量删除商品
    @RequestMapping("deleteItems")
    public String deleteItems(Integer[] ids){
        for(Integer id:ids){
            itmesService.deleteItem(id);
        }
        return "redirect:/items/findAll.do";
    }

}
编写前端页面：

前端商品展示页面：itemsList.jsp
这里没有对图片进行展示，因为在后面会等springmvc对文件上传另做笔记。

<%@ 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"%>
<c:set var="basePath" value="http://127.0.0.1:8080/ssmImageServer/uploadImage/"></c:set>
<!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>查询商品列表</title>
</head>
<body> 
<form action="${pageContext.request.contextPath }/items/deleteItems.do" method="post">
查询条件：
<table width="100%" border=1>
<tr>
<td><input type="submit" value="查询"/>
    <input type="submit" value="批量删除商品"/>
</td>
</tr>
</table>
商品列表：
<table width="100%" border=1>
<tr>
    <td>ID</td>
    <td>商品名称</td>
    <td>商品图片</td>
    <td>商品价格</td>
    <td>生产日期</td>
    <td>商品描述</td>
    <td>操作</td>
</tr>
<c:forEach items="${itemsList }" var="item">
<tr>
    <td><input type="checkbox" name="ids" value="${item.id}"/></td>
    <td>${item.name }</td>
    <td>
        <img alt="商品图片" src="${basePath }${item.pic}" width="400px" height="300px">
    </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="${pageContext.request.contextPath }/rest/items/editItem/${item.id}">修改</a>
        <a href="${pageContext.request.contextPath }/rest/items/deleteItem/${item.id}">删除</a>
    </td>

</tr>
</c:forEach>

</table>
</form>
</body>

</html>

前端商品修改页面：editItem.jsp
此处修改没有提供对图片的展示和上传等操作，后面会进行文件片上传另做笔记。

<%@ 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"%>
<c:set var="basePath" value="http://127.0.0.1:8080/ssmImageServer/uploadImage/"></c:set>
<!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>查询商品列表</title>
</head>
<body> 
<form action="${pageContext.request.contextPath }/items/deleteItems.do" method="post">
查询条件：
<table width="100%" border=1>
<tr>
<td><input type="submit" value="查询"/>
    <input type="submit" value="批量删除商品"/>
</td>
</tr>
</table>
商品列表：
<table width="100%" border=1>
<tr>
    <td>ID</td>
    <td>商品名称</td>
    <td>商品图片</td>
    <td>商品价格</td>
    <td>生产日期</td>
    <td>商品描述</td>
    <td>操作</td>
</tr>
<c:forEach items="${itemsList }" var="item">
<tr>
    <td><input type="checkbox" name="ids" value="${item.id}"/></td>
    <td>${item.name }</td>
    <td>
        <img alt="商品图片" src="${basePath }${item.pic}" width="400px" height="300px">
    </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="${pageContext.request.contextPath }/rest/items/editItem/${item.id}">修改</a>
        <a href="${pageContext.request.contextPath }/rest/items/deleteItem/${item.id}">删除</a>
    </td>

</tr>
</c:forEach>

</table>
</form>
</body>

</html>
启动Tomcat并查看效果：

商品展示：
这里写图片描述
商品修改：
这里写图片描述

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