spring boot + mybatis詳細使用（一）

1. 工程搭建：

方法一：使用 Spring Initializr 官方網站搭建。

若是你只是單純的搭建mybatis，只須要MyBatis以及你使用的數據庫的jar，好比這裏的MySql，其餘均不須要。

方法二：工程搭建好後，在pom.xml文件中加入如下依賴。

<dependency>
	<groupId>org.mybatis.spring.boot</groupId>
	<artifactId>mybatis-spring-boot-starter</artifactId>
	<version>2.0.0</version>
</dependency>

<dependency>
	<groupId>mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
	<scope>runtime</scope>
</dependency>

2. 修改配置文件：

application.properties 加入如下配置：

spring.datasource.url=jdbc:mysql://127.0.0.1:3306/user_center
# 出現時區錯誤，須要加入屬性： 
# ?serverTimezone=GMT%2B8
# mybatis與mysql若是出現插入數據出現中文亂碼，須要加上如下屬性
# &useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=password
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

# 存放mybatis映射文件的位置
mybatis.mapper-locations=classpath*:mapping/*Mapper.xml
# 存放實體類文件的位置
mybatis.type-aliases-package=com.cjsz.usercenter.mybatis.model

3. 實現mybatis：

實現一張表的mybatis功能須要三個文件，實體類（Entity），dao層（mapper），映射文件（xml）

這裏的實體類（PublicUser，他的包名要與配置文件裏的路徑一致）、dao（PublicUserMapper）、映射文件（PublicUserMapper.xml，他所在位置也是須要與配置文件保持一致。）

下面來看詳細代碼：

package com.cjsz.usercenter.mybatis.model;

public class PublicUser {
    private Integer userId;

    private String account;

    private String password;

    private String name;

    private String phone;

    private String email;

    private String age;

    private String sex;

    private Integer organizationId;

    private Integer roleId;

    private String accessToken;

    /** 省略掉了get/set方法 */
}

package com.cjsz.usercenter.mybatis.model;

import java.util.ArrayList;
import java.util.List;

public class PublicUserExample {
    protected String orderByClause;

    protected boolean distinct;

    protected List<Criteria> oredCriteria;

    public PublicUserExample() {
        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 andUserIdIsNull() {
            addCriterion("user_id is null");
            return (Criteria) this;
        }

        public Criteria andUserIdIsNotNull() {
            addCriterion("user_id is not null");
            return (Criteria) this;
        }

        public Criteria andUserIdEqualTo(Integer value) {
            addCriterion("user_id =", value, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdNotEqualTo(Integer value) {
            addCriterion("user_id <>", value, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdGreaterThan(Integer value) {
            addCriterion("user_id >", value, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdGreaterThanOrEqualTo(Integer value) {
            addCriterion("user_id >=", value, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdLessThan(Integer value) {
            addCriterion("user_id <", value, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdLessThanOrEqualTo(Integer value) {
            addCriterion("user_id <=", value, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdIn(List<Integer> values) {
            addCriterion("user_id in", values, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdNotIn(List<Integer> values) {
            addCriterion("user_id not in", values, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdBetween(Integer value1, Integer value2) {
            addCriterion("user_id between", value1, value2, "userId");
            return (Criteria) this;
        }

        public Criteria andUserIdNotBetween(Integer value1, Integer value2) {
            addCriterion("user_id not between", value1, value2, "userId");
            return (Criteria) this;
        }

        public Criteria andAccountIsNull() {
            addCriterion("account is null");
            return (Criteria) this;
        }

        public Criteria andAccountIsNotNull() {
            addCriterion("account is not null");
            return (Criteria) this;
        }

        public Criteria andAccountEqualTo(String value) {
            addCriterion("account =", value, "account");
            return (Criteria) this;
        }

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

        public Criteria andAccountGreaterThan(String value) {
            addCriterion("account >", value, "account");
            return (Criteria) this;
        }

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

        public Criteria andAccountLessThan(String value) {
            addCriterion("account <", value, "account");
            return (Criteria) this;
        }

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

        public Criteria andAccountLike(String value) {
            addCriterion("account like", value, "account");
            return (Criteria) this;
        }

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

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

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

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

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

        public Criteria andPasswordIsNull() {
            addCriterion("password is null");
            return (Criteria) this;
        }

        public Criteria andPasswordIsNotNull() {
            addCriterion("password is not null");
            return (Criteria) this;
        }

        public Criteria andPasswordEqualTo(String value) {
            addCriterion("password =", value, "password");
            return (Criteria) this;
        }

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

        public Criteria andPasswordGreaterThan(String value) {
            addCriterion("password >", value, "password");
            return (Criteria) this;
        }

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

        public Criteria andPasswordLessThan(String value) {
            addCriterion("password <", value, "password");
            return (Criteria) this;
        }

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

        public Criteria andPasswordLike(String value) {
            addCriterion("password like", value, "password");
            return (Criteria) this;
        }

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

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

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

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

        public Criteria andPasswordNotBetween(String value1, String value2) {
            addCriterion("password not between", value1, value2, "password");
            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 andPhoneIsNull() {
            addCriterion("phone is null");
            return (Criteria) this;
        }

        public Criteria andPhoneIsNotNull() {
            addCriterion("phone is not null");
            return (Criteria) this;
        }

        public Criteria andPhoneEqualTo(String value) {
            addCriterion("phone =", value, "phone");
            return (Criteria) this;
        }

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

        public Criteria andPhoneGreaterThan(String value) {
            addCriterion("phone >", value, "phone");
            return (Criteria) this;
        }

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

        public Criteria andPhoneLessThan(String value) {
            addCriterion("phone <", value, "phone");
            return (Criteria) this;
        }

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

        public Criteria andPhoneLike(String value) {
            addCriterion("phone like", value, "phone");
            return (Criteria) this;
        }

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

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

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

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

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

        public Criteria andEmailIsNull() {
            addCriterion("email is null");
            return (Criteria) this;
        }

        public Criteria andEmailIsNotNull() {
            addCriterion("email is not null");
            return (Criteria) this;
        }

        public Criteria andEmailEqualTo(String value) {
            addCriterion("email =", value, "email");
            return (Criteria) this;
        }

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

        public Criteria andEmailGreaterThan(String value) {
            addCriterion("email >", value, "email");
            return (Criteria) this;
        }

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

        public Criteria andEmailLessThan(String value) {
            addCriterion("email <", value, "email");
            return (Criteria) this;
        }

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

        public Criteria andEmailLike(String value) {
            addCriterion("email like", value, "email");
            return (Criteria) this;
        }

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

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

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

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

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

        public Criteria andAgeIsNull() {
            addCriterion("age is null");
            return (Criteria) this;
        }

        public Criteria andAgeIsNotNull() {
            addCriterion("age is not null");
            return (Criteria) this;
        }

        public Criteria andAgeEqualTo(String value) {
            addCriterion("age =", value, "age");
            return (Criteria) this;
        }

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

        public Criteria andAgeGreaterThan(String value) {
            addCriterion("age >", value, "age");
            return (Criteria) this;
        }

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

        public Criteria andAgeLessThan(String value) {
            addCriterion("age <", value, "age");
            return (Criteria) this;
        }

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

        public Criteria andAgeLike(String value) {
            addCriterion("age like", value, "age");
            return (Criteria) this;
        }

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

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

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

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

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

        public Criteria andSexIsNull() {
            addCriterion("sex is null");
            return (Criteria) this;
        }

        public Criteria andSexIsNotNull() {
            addCriterion("sex is not null");
            return (Criteria) this;
        }

        public Criteria andSexEqualTo(String value) {
            addCriterion("sex =", value, "sex");
            return (Criteria) this;
        }

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

        public Criteria andSexGreaterThan(String value) {
            addCriterion("sex >", value, "sex");
            return (Criteria) this;
        }

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

        public Criteria andSexLessThan(String value) {
            addCriterion("sex <", value, "sex");
            return (Criteria) this;
        }

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

        public Criteria andSexLike(String value) {
            addCriterion("sex like", value, "sex");
            return (Criteria) this;
        }

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

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

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

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

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

        public Criteria andOrganizationIdIsNull() {
            addCriterion("organization_id is null");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdIsNotNull() {
            addCriterion("organization_id is not null");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdEqualTo(Integer value) {
            addCriterion("organization_id =", value, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdNotEqualTo(Integer value) {
            addCriterion("organization_id <>", value, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdGreaterThan(Integer value) {
            addCriterion("organization_id >", value, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdGreaterThanOrEqualTo(Integer value) {
            addCriterion("organization_id >=", value, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdLessThan(Integer value) {
            addCriterion("organization_id <", value, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdLessThanOrEqualTo(Integer value) {
            addCriterion("organization_id <=", value, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdIn(List<Integer> values) {
            addCriterion("organization_id in", values, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdNotIn(List<Integer> values) {
            addCriterion("organization_id not in", values, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdBetween(Integer value1, Integer value2) {
            addCriterion("organization_id between", value1, value2, "organizationId");
            return (Criteria) this;
        }

        public Criteria andOrganizationIdNotBetween(Integer value1, Integer value2) {
            addCriterion("organization_id not between", value1, value2, "organizationId");
            return (Criteria) this;
        }

        public Criteria andRoleIdIsNull() {
            addCriterion("role_id is null");
            return (Criteria) this;
        }

        public Criteria andRoleIdIsNotNull() {
            addCriterion("role_id is not null");
            return (Criteria) this;
        }

        public Criteria andRoleIdEqualTo(Integer value) {
            addCriterion("role_id =", value, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdNotEqualTo(Integer value) {
            addCriterion("role_id <>", value, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdGreaterThan(Integer value) {
            addCriterion("role_id >", value, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdGreaterThanOrEqualTo(Integer value) {
            addCriterion("role_id >=", value, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdLessThan(Integer value) {
            addCriterion("role_id <", value, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdLessThanOrEqualTo(Integer value) {
            addCriterion("role_id <=", value, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdIn(List<Integer> values) {
            addCriterion("role_id in", values, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdNotIn(List<Integer> values) {
            addCriterion("role_id not in", values, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdBetween(Integer value1, Integer value2) {
            addCriterion("role_id between", value1, value2, "roleId");
            return (Criteria) this;
        }

        public Criteria andRoleIdNotBetween(Integer value1, Integer value2) {
            addCriterion("role_id not between", value1, value2, "roleId");
            return (Criteria) this;
        }

        public Criteria andAccessTokenIsNull() {
            addCriterion("access_token is null");
            return (Criteria) this;
        }

        public Criteria andAccessTokenIsNotNull() {
            addCriterion("access_token is not null");
            return (Criteria) this;
        }

        public Criteria andAccessTokenEqualTo(String value) {
            addCriterion("access_token =", value, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenNotEqualTo(String value) {
            addCriterion("access_token <>", value, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenGreaterThan(String value) {
            addCriterion("access_token >", value, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenGreaterThanOrEqualTo(String value) {
            addCriterion("access_token >=", value, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenLessThan(String value) {
            addCriterion("access_token <", value, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenLessThanOrEqualTo(String value) {
            addCriterion("access_token <=", value, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenLike(String value) {
            addCriterion("access_token like", value, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenNotLike(String value) {
            addCriterion("access_token not like", value, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenIn(List<String> values) {
            addCriterion("access_token in", values, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenNotIn(List<String> values) {
            addCriterion("access_token not in", values, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenBetween(String value1, String value2) {
            addCriterion("access_token between", value1, value2, "accessToken");
            return (Criteria) this;
        }

        public Criteria andAccessTokenNotBetween(String value1, String value2) {
            addCriterion("access_token not between", value1, value2, "accessToken");
            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);
        }
    }
}

package com.cjsz.usercenter.mybatis.mapper;

import com.cjsz.usercenter.mybatis.model.PublicUser;
import com.cjsz.usercenter.mybatis.model.PublicUserExample;
import java.util.List;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

@Mapper    // 該註解不能少
public interface PublicUserMapper {
    long countByExample(PublicUserExample example);

    int deleteByExample(PublicUserExample example);

    int insert(PublicUser record);

    int insertSelective(PublicUser record);

    List<PublicUser> selectByExample(PublicUserExample example);

    int updateByExampleSelective(@Param("record") PublicUser record, @Param("example") PublicUserExample example);

    int updateByExample(@Param("record") PublicUser record, @Param("example") PublicUserExample example);
}

<?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.cjsz.usercenter.mybatis.mapper.PublicUserMapper">
  <resultMap id="BaseResultMap" type="com.cjsz.usercenter.mybatis.model.PublicUser">
    <result column="user_id" jdbcType="INTEGER" property="userId" />
    <result column="account" jdbcType="VARCHAR" property="account" />
    <result column="password" jdbcType="VARCHAR" property="password" />
    <result column="name" jdbcType="VARCHAR" property="name" />
    <result column="phone" jdbcType="VARCHAR" property="phone" />
    <result column="email" jdbcType="VARCHAR" property="email" />
    <result column="age" jdbcType="VARCHAR" property="age" />
    <result column="sex" jdbcType="VARCHAR" property="sex" />
    <result column="organization_id" jdbcType="INTEGER" property="organizationId" />
    <result column="role_id" jdbcType="INTEGER" property="roleId" />
    <result column="access_token" jdbcType="VARCHAR" property="accessToken" />
  </resultMap>
  <sql id="Example_Where_Clause">
    <where>
      <foreach collection="oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <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 close=")" collection="criterion.value" item="listItem" open="(" 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="(" prefixOverrides="and" suffix=")">
            <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 close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List">
    user_id, account, password, name, phone, email, age, sex, organization_id, role_id, 
    access_token
  </sql>
  <select id="selectByExample" parameterType="com.cjsz.usercenter.mybatis.model.PublicUserExample" resultMap="BaseResultMap">
    select
    <if test="distinct">
      distinct
    </if>
    'true' as QUERYID,
    <include refid="Base_Column_List" />
    from public_user
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null">
      order by ${orderByClause}
    </if>
  </select>
  <delete id="deleteByExample" parameterType="com.cjsz.usercenter.mybatis.model.PublicUserExample">
    delete from public_user
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.cjsz.usercenter.mybatis.model.PublicUser">
    insert into public_user (user_id, account, password, 
      name, phone, email, 
      age, sex, organization_id, 
      role_id, access_token)
    values (#{userId,jdbcType=INTEGER}, #{account,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR}, 
      #{name,jdbcType=VARCHAR}, #{phone,jdbcType=VARCHAR}, #{email,jdbcType=VARCHAR}, 
      #{age,jdbcType=VARCHAR}, #{sex,jdbcType=VARCHAR}, #{organizationId,jdbcType=INTEGER}, 
      #{roleId,jdbcType=INTEGER}, #{accessToken,jdbcType=VARCHAR})
  </insert>
  <insert id="insertSelective" parameterType="com.cjsz.usercenter.mybatis.model.PublicUser">
    insert into public_user
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="userId != null">
        user_id,
      </if>
      <if test="account != null">
        account,
      </if>
      <if test="password != null">
        password,
      </if>
      <if test="name != null">
        name,
      </if>
      <if test="phone != null">
        phone,
      </if>
      <if test="email != null">
        email,
      </if>
      <if test="age != null">
        age,
      </if>
      <if test="sex != null">
        sex,
      </if>
      <if test="organizationId != null">
        organization_id,
      </if>
      <if test="roleId != null">
        role_id,
      </if>
      <if test="accessToken != null">
        access_token,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="userId != null">
        #{userId,jdbcType=INTEGER},
      </if>
      <if test="account != null">
        #{account,jdbcType=VARCHAR},
      </if>
      <if test="password != null">
        #{password,jdbcType=VARCHAR},
      </if>
      <if test="name != null">
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="phone != null">
        #{phone,jdbcType=VARCHAR},
      </if>
      <if test="email != null">
        #{email,jdbcType=VARCHAR},
      </if>
      <if test="age != null">
        #{age,jdbcType=VARCHAR},
      </if>
      <if test="sex != null">
        #{sex,jdbcType=VARCHAR},
      </if>
      <if test="organizationId != null">
        #{organizationId,jdbcType=INTEGER},
      </if>
      <if test="roleId != null">
        #{roleId,jdbcType=INTEGER},
      </if>
      <if test="accessToken != null">
        #{accessToken,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.cjsz.usercenter.mybatis.model.PublicUserExample" resultType="java.lang.Long">
    select count(*) from public_user
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map">
    update public_user
    <set>
      <if test="record.userId != null">
        user_id = #{record.userId,jdbcType=INTEGER},
      </if>
      <if test="record.account != null">
        account = #{record.account,jdbcType=VARCHAR},
      </if>
      <if test="record.password != null">
        password = #{record.password,jdbcType=VARCHAR},
      </if>
      <if test="record.name != null">
        name = #{record.name,jdbcType=VARCHAR},
      </if>
      <if test="record.phone != null">
        phone = #{record.phone,jdbcType=VARCHAR},
      </if>
      <if test="record.email != null">
        email = #{record.email,jdbcType=VARCHAR},
      </if>
      <if test="record.age != null">
        age = #{record.age,jdbcType=VARCHAR},
      </if>
      <if test="record.sex != null">
        sex = #{record.sex,jdbcType=VARCHAR},
      </if>
      <if test="record.organizationId != null">
        organization_id = #{record.organizationId,jdbcType=INTEGER},
      </if>
      <if test="record.roleId != null">
        role_id = #{record.roleId,jdbcType=INTEGER},
      </if>
      <if test="record.accessToken != null">
        access_token = #{record.accessToken,jdbcType=VARCHAR},
      </if>
    </set>
    <if test="_parameter != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map">
    update public_user
    set user_id = #{record.userId,jdbcType=INTEGER},
      account = #{record.account,jdbcType=VARCHAR},
      password = #{record.password,jdbcType=VARCHAR},
      name = #{record.name,jdbcType=VARCHAR},
      phone = #{record.phone,jdbcType=VARCHAR},
      email = #{record.email,jdbcType=VARCHAR},
      age = #{record.age,jdbcType=VARCHAR},
      sex = #{record.sex,jdbcType=VARCHAR},
      organization_id = #{record.organizationId,jdbcType=INTEGER},
      role_id = #{record.roleId,jdbcType=INTEGER},
      access_token = #{record.accessToken,jdbcType=VARCHAR}
    <if test="_parameter != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
</mapper>