mybatis学习(41):使用逆向工程

新建一个项目，将逆向工程的生成的拷贝进来

配置文件

log4j.properties

### \u914D\u7F6E\u6839 ###
log4j.rootLogger = debug,console ,fileAppender,dailyRollingFile,ROLLING_FILE,MAIL,DATABASE### \u8BBE\u7F6E\u8F93\u51FAsql\u7684\u7EA7\u522B\uFF0C\u5176\u4E2Dlogger\u540E\u9762\u7684\u5185\u5BB9\u5168\u90E8\u4E3Ajar\u5305\u4E2D\u6240\u5305\u542B\u7684\u5305\u540D ###
log4j.logger.org.apache=dubug
log4j.logger.java.sql.Connection=dubug
log4j.logger.java.sql.Statement=dubug
log4j.logger.java.sql.PreparedStatement=dubug
log4j.logger.java.sql.ResultSet=dubug### \u914D\u7F6E\u8F93\u51FA\u5230\u63A7\u5236\u53F0 ###
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern =  %d{ABSOLUTE} %5p %c{1}:%L - %m%n

mybatis-config.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>
<settings><setting name="useGeneratedKeys" value="true"/>
</settings>
<typeAliases><typeAlias type="com.geyao.mybatis.pojo.Blog" alias="Blog"/>
</typeAliases><environments default="development"><environment id="development"><transactionManager type="JDBC" /><!-- 配置数据库连接信息 --><dataSource type="POOLED"><property name="driver" value="com.mysql.cj.jdbc.Driver" /><property name="url" value="jdbc:mysql://localhost:3306/blog_gp1701?serverTimezone=GMT%2B8" /><property name="username" value="root" /><property name="password" value="123" /></dataSource></environment></environments><mappers><!-- 注册userMapper.xml文件， userMapper.xml位于me.gacl.mapping这个包下，所以resource写成me/gacl/mapping/userMapper.xml--><mapper resource="com/geyao/mybatis/mapper/BlogMapper.xml"/></mappers>
</configuration>

com.geyao.mybatis.mapper

BlogMapper.java

package com.geyao.mybatis.mapper;import com.geyao.mybatis.pojo.Blog;
import com.geyao.mybatis.pojo.BlogExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;public interface BlogMapper {int countByExample(BlogExample example);int deleteByExample(BlogExample example);int insert(Blog record);int insertSelective(Blog record);List<Blog> selectByExample(BlogExample example);int updateByExampleSelective(@Param("record") Blog record, @Param("example") BlogExample example);int updateByExample(@Param("record") Blog record, @Param("example") BlogExample example);
}

BlogMapper.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.geyao.mybatis.mapper.BlogMapper" ><resultMap id="BaseResultMap" type="com.geyao.mybatis.pojo.Blog" ><result column="id" property="id" jdbcType="INTEGER" /><result column="title" property="title" jdbcType="VARCHAR" /><result column="authod_id" property="authodId" jdbcType="INTEGER" /><result column="state" property="state" jdbcType="VARCHAR" /><result column="featured" property="featured" jdbcType="TINYINT" /><result column="style" property="style" jdbcType="VARCHAR" /></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, title, authod_id, state, featured, style</sql><select id="selectByExample" resultMap="BaseResultMap" parameterType="com.geyao.mybatis.pojo.BlogExample" >select<if test="distinct" >distinct</if><include refid="Base_Column_List" />from blog<if test="_parameter != null" ><include refid="Example_Where_Clause" /></if><if test="orderByClause != null" >order by ${orderByClause}</if></select><delete id="deleteByExample" parameterType="com.geyao.mybatis.pojo.BlogExample" >delete from blog<if test="_parameter != null" ><include refid="Example_Where_Clause" /></if></delete><insert id="insert" parameterType="com.geyao.mybatis.pojo.Blog" >insert into blog (id, title, authod_id, state, featured, style)values (#{id,jdbcType=INTEGER}, #{title,jdbcType=VARCHAR}, #{authodId,jdbcType=INTEGER}, #{state,jdbcType=VARCHAR}, #{featured,jdbcType=TINYINT}, #{style,jdbcType=VARCHAR})</insert><insert id="insertSelective" parameterType="com.geyao.mybatis.pojo.Blog" >insert into blog<trim prefix="(" suffix=")" suffixOverrides="," ><if test="id != null" >id,</if><if test="title != null" >title,</if><if test="authodId != null" >authod_id,</if><if test="state != null" >state,</if><if test="featured != null" >featured,</if><if test="style != null" >style,</if></trim><trim prefix="values (" suffix=")" suffixOverrides="," ><if test="id != null" >#{id,jdbcType=INTEGER},</if><if test="title != null" >#{title,jdbcType=VARCHAR},</if><if test="authodId != null" >#{authodId,jdbcType=INTEGER},</if><if test="state != null" >#{state,jdbcType=VARCHAR},</if><if test="featured != null" >#{featured,jdbcType=TINYINT},</if><if test="style != null" >#{style,jdbcType=VARCHAR},</if></trim></insert><select id="countByExample" parameterType="com.geyao.mybatis.pojo.BlogExample" resultType="java.lang.Integer" >select count(*) from blog<if test="_parameter != null" ><include refid="Example_Where_Clause" /></if></select><update id="updateByExampleSelective" parameterType="map" >update blog<set ><if test="record.id != null" >id = #{record.id,jdbcType=INTEGER},</if><if test="record.title != null" >title = #{record.title,jdbcType=VARCHAR},</if><if test="record.authodId != null" >authod_id = #{record.authodId,jdbcType=INTEGER},</if><if test="record.state != null" >state = #{record.state,jdbcType=VARCHAR},</if><if test="record.featured != null" >featured = #{record.featured,jdbcType=TINYINT},</if><if test="record.style != null" >style = #{record.style,jdbcType=VARCHAR},</if></set><if test="_parameter != null" ><include refid="Update_By_Example_Where_Clause" /></if></update><update id="updateByExample" parameterType="map" >update blogset id = #{record.id,jdbcType=INTEGER},title = #{record.title,jdbcType=VARCHAR},authod_id = #{record.authodId,jdbcType=INTEGER},state = #{record.state,jdbcType=VARCHAR},featured = #{record.featured,jdbcType=TINYINT},style = #{record.style,jdbcType=VARCHAR}<if test="_parameter != null" ><include refid="Update_By_Example_Where_Clause" /></if></update>
</mapper>

com.geyao.mybatis.pojo

Blog

package com.geyao.mybatis.pojo;public class Blog {private Integer id;private String title;private Integer authodId;private String state;private Byte featured;private String style;public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title == null ? null : title.trim();}public Integer getAuthodId() {return authodId;}public void setAuthodId(Integer authodId) {this.authodId = authodId;}public String getState() {return state;}public void setState(String state) {this.state = state == null ? null : state.trim();}public Byte getFeatured() {return featured;}public void setFeatured(Byte featured) {this.featured = featured;}public String getStyle() {return style;}public void setStyle(String style) {this.style = style == null ? null : style.trim();}
}

BlogExample

package com.geyao.mybatis.pojo;import java.util.ArrayList;
import java.util.List;public class BlogExample {protected String orderByClause;protected boolean distinct;protected List<Criteria> oredCriteria;public BlogExample() {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 andTitleIsNull() {addCriterion("title is null");return (Criteria) this;}public Criteria andTitleIsNotNull() {addCriterion("title is not null");return (Criteria) this;}public Criteria andTitleEqualTo(String value) {addCriterion("title =", value, "title");return (Criteria) this;}public Criteria andTitleNotEqualTo(String value) {addCriterion("title <>", value, "title");return (Criteria) this;}public Criteria andTitleGreaterThan(String value) {addCriterion("title >", value, "title");return (Criteria) this;}public Criteria andTitleGreaterThanOrEqualTo(String value) {addCriterion("title >=", value, "title");return (Criteria) this;}public Criteria andTitleLessThan(String value) {addCriterion("title <", value, "title");return (Criteria) this;}public Criteria andTitleLessThanOrEqualTo(String value) {addCriterion("title <=", value, "title");return (Criteria) this;}public Criteria andTitleLike(String value) {addCriterion("title like", value, "title");return (Criteria) this;}public Criteria andTitleNotLike(String value) {addCriterion("title not like", value, "title");return (Criteria) this;}public Criteria andTitleIn(List<String> values) {addCriterion("title in", values, "title");return (Criteria) this;}public Criteria andTitleNotIn(List<String> values) {addCriterion("title not in", values, "title");return (Criteria) this;}public Criteria andTitleBetween(String value1, String value2) {addCriterion("title between", value1, value2, "title");return (Criteria) this;}public Criteria andTitleNotBetween(String value1, String value2) {addCriterion("title not between", value1, value2, "title");return (Criteria) this;}public Criteria andAuthodIdIsNull() {addCriterion("authod_id is null");return (Criteria) this;}public Criteria andAuthodIdIsNotNull() {addCriterion("authod_id is not null");return (Criteria) this;}public Criteria andAuthodIdEqualTo(Integer value) {addCriterion("authod_id =", value, "authodId");return (Criteria) this;}public Criteria andAuthodIdNotEqualTo(Integer value) {addCriterion("authod_id <>", value, "authodId");return (Criteria) this;}public Criteria andAuthodIdGreaterThan(Integer value) {addCriterion("authod_id >", value, "authodId");return (Criteria) this;}public Criteria andAuthodIdGreaterThanOrEqualTo(Integer value) {addCriterion("authod_id >=", value, "authodId");return (Criteria) this;}public Criteria andAuthodIdLessThan(Integer value) {addCriterion("authod_id <", value, "authodId");return (Criteria) this;}public Criteria andAuthodIdLessThanOrEqualTo(Integer value) {addCriterion("authod_id <=", value, "authodId");return (Criteria) this;}public Criteria andAuthodIdIn(List<Integer> values) {addCriterion("authod_id in", values, "authodId");return (Criteria) this;}public Criteria andAuthodIdNotIn(List<Integer> values) {addCriterion("authod_id not in", values, "authodId");return (Criteria) this;}public Criteria andAuthodIdBetween(Integer value1, Integer value2) {addCriterion("authod_id between", value1, value2, "authodId");return (Criteria) this;}public Criteria andAuthodIdNotBetween(Integer value1, Integer value2) {addCriterion("authod_id not between", value1, value2, "authodId");return (Criteria) this;}public Criteria andStateIsNull() {addCriterion("state is null");return (Criteria) this;}public Criteria andStateIsNotNull() {addCriterion("state is not null");return (Criteria) this;}public Criteria andStateEqualTo(String value) {addCriterion("state =", value, "state");return (Criteria) this;}public Criteria andStateNotEqualTo(String value) {addCriterion("state <>", value, "state");return (Criteria) this;}public Criteria andStateGreaterThan(String value) {addCriterion("state >", value, "state");return (Criteria) this;}public Criteria andStateGreaterThanOrEqualTo(String value) {addCriterion("state >=", value, "state");return (Criteria) this;}public Criteria andStateLessThan(String value) {addCriterion("state <", value, "state");return (Criteria) this;}public Criteria andStateLessThanOrEqualTo(String value) {addCriterion("state <=", value, "state");return (Criteria) this;}public Criteria andStateLike(String value) {addCriterion("state like", value, "state");return (Criteria) this;}public Criteria andStateNotLike(String value) {addCriterion("state not like", value, "state");return (Criteria) this;}public Criteria andStateIn(List<String> values) {addCriterion("state in", values, "state");return (Criteria) this;}public Criteria andStateNotIn(List<String> values) {addCriterion("state not in", values, "state");return (Criteria) this;}public Criteria andStateBetween(String value1, String value2) {addCriterion("state between", value1, value2, "state");return (Criteria) this;}public Criteria andStateNotBetween(String value1, String value2) {addCriterion("state not between", value1, value2, "state");return (Criteria) this;}public Criteria andFeaturedIsNull() {addCriterion("featured is null");return (Criteria) this;}public Criteria andFeaturedIsNotNull() {addCriterion("featured is not null");return (Criteria) this;}public Criteria andFeaturedEqualTo(Byte value) {addCriterion("featured =", value, "featured");return (Criteria) this;}public Criteria andFeaturedNotEqualTo(Byte value) {addCriterion("featured <>", value, "featured");return (Criteria) this;}public Criteria andFeaturedGreaterThan(Byte value) {addCriterion("featured >", value, "featured");return (Criteria) this;}public Criteria andFeaturedGreaterThanOrEqualTo(Byte value) {addCriterion("featured >=", value, "featured");return (Criteria) this;}public Criteria andFeaturedLessThan(Byte value) {addCriterion("featured <", value, "featured");return (Criteria) this;}public Criteria andFeaturedLessThanOrEqualTo(Byte value) {addCriterion("featured <=", value, "featured");return (Criteria) this;}public Criteria andFeaturedIn(List<Byte> values) {addCriterion("featured in", values, "featured");return (Criteria) this;}public Criteria andFeaturedNotIn(List<Byte> values) {addCriterion("featured not in", values, "featured");return (Criteria) this;}public Criteria andFeaturedBetween(Byte value1, Byte value2) {addCriterion("featured between", value1, value2, "featured");return (Criteria) this;}public Criteria andFeaturedNotBetween(Byte value1, Byte value2) {addCriterion("featured not between", value1, value2, "featured");return (Criteria) this;}public Criteria andStyleIsNull() {addCriterion("style is null");return (Criteria) this;}public Criteria andStyleIsNotNull() {addCriterion("style is not null");return (Criteria) this;}public Criteria andStyleEqualTo(String value) {addCriterion("style =", value, "style");return (Criteria) this;}public Criteria andStyleNotEqualTo(String value) {addCriterion("style <>", value, "style");return (Criteria) this;}public Criteria andStyleGreaterThan(String value) {addCriterion("style >", value, "style");return (Criteria) this;}public Criteria andStyleGreaterThanOrEqualTo(String value) {addCriterion("style >=", value, "style");return (Criteria) this;}public Criteria andStyleLessThan(String value) {addCriterion("style <", value, "style");return (Criteria) this;}public Criteria andStyleLessThanOrEqualTo(String value) {addCriterion("style <=", value, "style");return (Criteria) this;}public Criteria andStyleLike(String value) {addCriterion("style like", value, "style");return (Criteria) this;}public Criteria andStyleNotLike(String value) {addCriterion("style not like", value, "style");return (Criteria) this;}public Criteria andStyleIn(List<String> values) {addCriterion("style in", values, "style");return (Criteria) this;}public Criteria andStyleNotIn(List<String> values) {addCriterion("style not in", values, "style");return (Criteria) this;}public Criteria andStyleBetween(String value1, String value2) {addCriterion("style between", value1, value2, "style");return (Criteria) this;}public Criteria andStyleNotBetween(String value1, String value2) {addCriterion("style not between", value1, value2, "style");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);}}
}

com.geyao.mybatis.util

MybatisUtil

package com.geyao.mybatis.util;import java.io.InputStream;
import java.io.Reader;import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;public class MyBatisUtil {private static SqlSessionFactory sqlSessionFactory =null;static {try {InputStream in = Resources.getResourceAsStream("mybatis-config.xml");sqlSessionFactory = new SqlSessionFactoryBuilder().build(in);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}private MyBatisUtil() {}public static SqlSession getSqlSession() {return sqlSessionFactory.openSession();}
}

com.geyao.mybatis.mapper

BlogMapperTest

package com.geyao.mybatis.mapper;import java.util.ArrayList;
import java.util.List;import org.apache.ibatis.session.SqlSession;
import org.junit.Test;import com.geyao.mybatis.pojo.Blog;
import com.geyao.mybatis.pojo.BlogExample;
import com.geyao.mybatis.pojo.BlogExample.Criteria;
import com.geyao.mybatis.util.MyBatisUtil;public class BlogMapperTest {@Testpublic void testSelect() {SqlSession session =MyBatisUtil.getSqlSession();BlogMapper blogMapper =session.getMapper(BlogMapper.class);BlogExample blogExample=new BlogExample();BlogExample.Criteria blogcriteria=blogExample.createCriteria();blogcriteria.andTitleLike("%g%");List<Blog> blogList=blogMapper.selectByExample(blogExample);System.out.print(blogList);}
}

运行结果

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