1 配置文件 application.properties #server server.port=8090 server.address=127.0.0.1 server.session.timeout=1800 server.error.whitelabel.enabled=true #mybatis mybatis.config-locations=classpath:mybatis/mybatis-config.xml // mybatis配置文件 mybatis.mapper-locations=classpath:mybatis/mapper/*.xml //mapper映射文件
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>
<!-- 只设置需要的,其他使用默认值 -->
<!-- 开启缓存,默认就是开启的,2层开关,需要在Mapper文件中也指定 cache 标签才会真正使用缓存 -->
<setting name="cacheEnabled" value="true"/>
<!-- 在null时也调用 setter,适应于返回Map,3.2版本以上可用 -->
<setting name="callSettersOnNulls" value="true"/>
</settings>
<typeAliases>
<typeAlias alias="Integer" type="java.lang.Integer" />
<typeAlias alias="Long" type="java.lang.Long" />
<typeAlias alias="HashMap" type="java.util.HashMap" />
<typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap" />
<typeAlias alias="ArrayList" type="java.util.ArrayList" />
<typeAlias alias="LinkedList" type="java.util.LinkedList" />
</typeAliases>
</configuration>
BaseMapper.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.sys.mapper.BaseMapper" >
<!-- 添加数据 传入map map： 1.table 表名 2.columns 字段 （list） 3.values 字段值 （list） -->
<insert id="save" parameterType="java.util.Map">
insert into ${table}
<foreach collection="columns" item="item1" index="index" open="("
close=")" separator=",">
${item1}
</foreach>
values
<foreach collection="values" item="item2" index="index" open="("
close=")" separator=",">
#{item2}
</foreach>
</insert>
<!-- 添加数据 返回主键 传入map map： 1.table 表名 2.columns 字段 （list） 3.values 字段值 （list） -->
<insert id="saveRetkey" parameterType="java.util.Map"
useGeneratedKeys="true" keyProperty="id">
insert into ${table}
<foreach collection="columns" item="item" index="index" open="("
close=")" separator=",">
${item}
</foreach>
values
<foreach collection="values" item="item" index="index" open="("
close=")" separator=",">
#{item}
</foreach>
</insert>
<!-- 修改 传入map map： 1.table 表名 2.columnvalues 字段-值 （map） 3.wheres 条件字段 (map) -->
<update id="update" parameterType="java.util.Map">
update ${table} set
<foreach collection="columnvalues.keys" item="item" index="key"
separator=",">
${item} = #{columnvalues[${item}]}
</foreach>
<where>
<if test="wheres != null">
1=1
<foreach collection="wheres" item="whe" index="index">
<foreach collection="whe.keys" item="item" index="key">
<foreach collection="whe[item]" item="val">
<choose>
<when test=‘val.toString() == "or" || val.toString() == "and"‘>
<![CDATA[${val}]]>
${item}
</when>
<when
test=‘val.toString() == "=" || val.toString() == "!=" || val.toString() == "<" || val.toString() == ">"
|| val.toString() == "<=" || val.toString() == ">=" || val.toString() == "like"
|| val.toString() == "is null" || val.toString() == "is not null"‘>
<![CDATA[ ${val} ]]>
</when>
<otherwise>
#{val}
</otherwise>
</choose>
</foreach>
</foreach>
</foreach>
</if>
</where>
</update>
<!-- 删除数据 传入map map： 1.table 表名 2.wheres 条件字段 （map） -->
<delete id="delete" parameterType="java.util.Map">
delete from ${table}
<where>
<if test="wheres != null">
1=1
<foreach collection="wheres" item="whe" index="index">
<foreach collection="whe.keys" item="item" index="key">
<foreach collection="whe[item]" item="val">
<choose>
<when test=‘val.toString() == "or" || val.toString() == "and"‘>
<![CDATA[${val}]]>
${item}
</when>
<when
test=‘val.toString() == "=" || val.toString() == "!=" || val.toString() == "<" || val.toString() == ">"
|| val.toString() == "<=" || val.toString() == ">=" || val.toString() == "like"
|| val.toString() == "is null" || val.toString() == "is not null"‘>
<![CDATA[ ${val} ]]>
</when>
<otherwise>
#{val}
</otherwise>
</choose>
</foreach>
</foreach>
</foreach>
</if>
</where>
</delete>
<!-- 删除数据 传入map map： 1.table 表名 2.wheres 条件字段 （map） -->
<delete id="deletes" parameterType="java.util.Map">
delete from ${table}
<where>
<if test="wheres != null">
${idkey} in
<foreach collection="wheres" item="item" index="index" open="("
close=")" separator=",">
#{item}
</foreach>
</if>
</where>
</delete>
<!-- 查询数据根据条件 一个数据 -->
<select id="findByWhere" parameterType="java.util.Map"
resultType="java.util.Map">
select distinct ${columns} from ${table}
<where>
<if test="wheres != null">
1=1
<foreach collection="wheres" item="whe" index="index">
<foreach collection="whe.keys" item="item" index="key">
<foreach collection="whe[item]" item="val">
<choose>
<when test=‘val.toString() == "or" || val.toString() == "and"‘>
<![CDATA[${val}]]>
${item}
</when>
<when
test=‘val.toString() == "=" || val.toString() == "!=" || val.toString() == "<" || val.toString() == ">"
|| val.toString() == "<=" || val.toString() == ">=" || val.toString() == "like"
|| val.toString() == "is null" || val.toString() == "is not null"‘>
<![CDATA[ ${val} ]]>
</when>
<otherwise>
#{val}
</otherwise>
</choose>
</foreach>
</foreach>
</foreach>
</if>
</where>
${sort} limit 1
</select>
<!-- 查询所有数据 -->
<select id="findAll" parameterType="java.util.Map" resultType="java.util.Map">
select distinct ${columns} from ${table} ${sort}
</select>
<!-- 查询所有数据根据条件 -->
<select id="findAllWhere" parameterType="java.util.Map"
resultType="java.util.Map">
select distinct ${columns} from ${table}
<where>
<if test="wheres != null">
1=1
<foreach collection="wheres" item="whe" index="index">
<foreach collection="whe.keys" item="item" index="key">
<foreach collection="whe[item]" item="val">
<choose>
<when test=‘val.toString() == "or" || val.toString() == "and"‘>
<![CDATA[${val}]]>
${item}
</when>
<when
test=‘val.toString() == "=" || val.toString() == "!=" || val.toString() == "<" || val.toString() == ">"
|| val.toString() == "<=" || val.toString() == ">=" || val.toString() == "like"
|| val.toString() == "is null" || val.toString() == "is not null"‘>
<![CDATA[ ${val} ]]>
</when>
<otherwise>
#{val}
</otherwise>
</choose>
</foreach>
</foreach>
</foreach>
</if>
</where>
${sort}
</select>
<!-- 分页查询 -->
<select id="findPageModel" parameterType="java.util.Map"
resultType="java.util.Map">
select distinct ${columns} from ${table}
<where>
<if test="wheres != null">
1=1
<foreach collection="wheres" item="whe" index="index">
<foreach collection="whe.keys" item="item" index="key">
<foreach collection="whe[item]" item="val">
<choose>
<when test=‘val.toString() == "or" || val.toString() == "and"‘>
<![CDATA[${val}]]>
${item}
</when>
<when
test=‘val.toString() == "=" || val.toString() == "!=" || val.toString() == "<" || val.toString() == ">"
|| val.toString() == "<=" || val.toString() == ">=" || val.toString() == "like"
|| val.toString() == "is null" || val.toString() == "is not null"‘>
<![CDATA[ ${val} ]]>
</when>
<otherwise>
#{val}
</otherwise>
</choose>
</foreach>
</foreach>
</foreach>
</if>
</where>
${sort} limit #{pageNo},#{pageSize}
</select>
<!-- 总数据条数 -->
<select id="findAllnum" parameterType="java.util.Map"
resultType="int">
select count(a.id) as num from ${table}
<where>
<if test="wheres != null">
1=1
<foreach collection="wheres" item="whe" index="index">
<foreach collection="whe.keys" item="item" index="key">
<foreach collection="whe[item]" item="val">
<choose>
<when test=‘val.toString() == "or" || val.toString() == "and"‘>
<![CDATA[${val}]]>
${item}
</when>
<when
test=‘val.toString() == "=" || val.toString() == "!=" || val.toString() == "<" || val.toString() == ">"
|| val.toString() == "<=" || val.toString() == ">=" || val.toString() == "like"
|| val.toString() == "is null" || val.toString() == "is not null"‘>
<![CDATA[ ${val} ]]>
</when>
<otherwise>
#{val}
</otherwise>
</choose>
</foreach>
</foreach>
</foreach>
</if>
</where>
</select>
<!-- 插入数据 直接传入sql -->
<insert id="insertsql" parameterType="String">
<![CDATA[${sql}]]>
</insert>
<!-- 修改数据 直接传入sql -->
<update id="updatesql" parameterType="String">
<![CDATA[${sql}]]>
</update>
<!-- 删除数据 直接传入sql -->
<delete id="deletesql" parameterType="String">
<![CDATA[${sql}]]>
</delete>
<!-- 查询数据 直接传入sql -->
<select id="selectsqlone" parameterType="String" resultType="java.util.Map">
<![CDATA[${sql}]]>
</select>
<!-- 查询数据 直接传入sql -->
<select id="selectsqlall" parameterType="String" resultType="java.util.Map">
<![CDATA[${sql}]]>
</select>
<!-- 查询数据 直接传入sql -->
<select id="selectsqlnum" parameterType="String" resultType="int">
<![CDATA[${sql}]]>
</select>
</mapper>
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>smalldemo</artifactId>
<version>2</version>
<packaging>war</packaging>
<name>SpringBootDemo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.7</java.version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-redis -->
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
<version>1.5.6.RELEASE</version>
</dependency> -->
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-redis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-redis</artifactId>
<version>1.4.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.caucho</groupId>
<artifactId>hessian</artifactId>
<version>4.0.38</version>
</dependency>
<!--pagehelper-->
<!-- <dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.1.2</version>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- 微信支付 -->
<dependency>
<groupId>com.github.wxpay</groupId>
<artifactId>wxpay-sdk</artifactId>
<version>0.0.3</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.3</version>
</dependency>
<dependency>
<groupId>net.sourceforge.htmlunit</groupId>
<artifactId>htmlunit</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Application.java
/**
* 项目启动类
* spring boot application只会扫描同一包下的类
* @author sys
*
*/
@SpringBootApplication
@EnableAutoConfiguration(exclude = { JacksonAutoConfiguration.class })
@ServletComponentScan
@EnableTransactionManagement //加入事务注解
@MapperScan("com.sys.mapper")
public class Application extends SpringBootServletInitializer{
//fastkson
@Bean
public HttpMessageConverters fastJsonHttpMessageConverters() {
FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
FastJsonConfig fastJsonConfig = new FastJsonConfig();
fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
fastConverter.setFastJsonConfig(fastJsonConfig);
HttpMessageConverter<?> converter = fastConverter;
return new HttpMessageConverters(converter);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(Application.class);
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
下篇继续--java对mybatis的curd封装
要源码的联系 qq 2506715686
时间： 2024-10-26 23:32:08