diff --git a/mybatis_study/.gitignore b/mybatis_study/.gitignore new file mode 100644 index 0000000..549e00a --- /dev/null +++ b/mybatis_study/.gitignore @@ -0,0 +1,33 @@ +HELP.md +target/ +!.mvn/wrapper/maven-wrapper.jar +!**/src/main/**/target/ +!**/src/test/**/target/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ +build/ +!**/src/main/**/build/ +!**/src/test/**/build/ + +### VS Code ### +.vscode/ diff --git a/mybatis_study/.mvn/wrapper/maven-wrapper.jar b/mybatis_study/.mvn/wrapper/maven-wrapper.jar new file mode 100644 index 0000000..bf82ff0 Binary files /dev/null and b/mybatis_study/.mvn/wrapper/maven-wrapper.jar differ diff --git a/mybatis_study/.mvn/wrapper/maven-wrapper.properties b/mybatis_study/.mvn/wrapper/maven-wrapper.properties new file mode 100644 index 0000000..ca5ab4b --- /dev/null +++ b/mybatis_study/.mvn/wrapper/maven-wrapper.properties @@ -0,0 +1,18 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.7/apache-maven-3.8.7-bin.zip +wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar diff --git a/mybatis_study/mvnw b/mybatis_study/mvnw new file mode 100644 index 0000000..8a8fb22 --- /dev/null +++ b/mybatis_study/mvnw @@ -0,0 +1,316 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Maven Start Up Batch script +# +# Required ENV vars: +# ------------------ +# JAVA_HOME - location of a JDK home dir +# +# Optional ENV vars +# ----------------- +# M2_HOME - location of maven2's installed home dir +# MAVEN_OPTS - parameters passed to the Java VM when running Maven +# e.g. to debug Maven itself, use +# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 +# MAVEN_SKIP_RC - flag to disable loading of mavenrc files +# ---------------------------------------------------------------------------- + +if [ -z "$MAVEN_SKIP_RC" ] ; then + + if [ -f /usr/local/etc/mavenrc ] ; then + . /usr/local/etc/mavenrc + fi + + if [ -f /etc/mavenrc ] ; then + . /etc/mavenrc + fi + + if [ -f "$HOME/.mavenrc" ] ; then + . "$HOME/.mavenrc" + fi + +fi + +# OS specific support. $var _must_ be set to either true or false. +cygwin=false; +darwin=false; +mingw=false +case "`uname`" in + CYGWIN*) cygwin=true ;; + MINGW*) mingw=true;; + Darwin*) darwin=true + # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home + # See https://developer.apple.com/library/mac/qa/qa1170/_index.html + if [ -z "$JAVA_HOME" ]; then + if [ -x "/usr/libexec/java_home" ]; then + export JAVA_HOME="`/usr/libexec/java_home`" + else + export JAVA_HOME="/Library/Java/Home" + fi + fi + ;; +esac + +if [ -z "$JAVA_HOME" ] ; then + if [ -r /etc/gentoo-release ] ; then + JAVA_HOME=`java-config --jre-home` + fi +fi + +if [ -z "$M2_HOME" ] ; then + ## resolve links - $0 may be a link to maven's home + PRG="$0" + + # need this for relative symlinks + while [ -h "$PRG" ] ; do + ls=`ls -ld "$PRG"` + link=`expr "$ls" : '.*-> \(.*\)$'` + if expr "$link" : '/.*' > /dev/null; then + PRG="$link" + else + PRG="`dirname "$PRG"`/$link" + fi + done + + saveddir=`pwd` + + M2_HOME=`dirname "$PRG"`/.. + + # make it fully qualified + M2_HOME=`cd "$M2_HOME" && pwd` + + cd "$saveddir" + # echo Using m2 at $M2_HOME +fi + +# For Cygwin, ensure paths are in UNIX format before anything is touched +if $cygwin ; then + [ -n "$M2_HOME" ] && + M2_HOME=`cygpath --unix "$M2_HOME"` + [ -n "$JAVA_HOME" ] && + JAVA_HOME=`cygpath --unix "$JAVA_HOME"` + [ -n "$CLASSPATH" ] && + CLASSPATH=`cygpath --path --unix "$CLASSPATH"` +fi + +# For Mingw, ensure paths are in UNIX format before anything is touched +if $mingw ; then + [ -n "$M2_HOME" ] && + M2_HOME="`(cd "$M2_HOME"; pwd)`" + [ -n "$JAVA_HOME" ] && + JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" +fi + +if [ -z "$JAVA_HOME" ]; then + javaExecutable="`which javac`" + if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then + # readlink(1) is not available as standard on Solaris 10. + readLink=`which readlink` + if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then + if $darwin ; then + javaHome="`dirname \"$javaExecutable\"`" + javaExecutable="`cd \"$javaHome\" && pwd -P`/javac" + else + javaExecutable="`readlink -f \"$javaExecutable\"`" + fi + javaHome="`dirname \"$javaExecutable\"`" + javaHome=`expr "$javaHome" : '\(.*\)/bin'` + JAVA_HOME="$javaHome" + export JAVA_HOME + fi + fi +fi + +if [ -z "$JAVACMD" ] ; then + if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD="$JAVA_HOME/jre/sh/java" + else + JAVACMD="$JAVA_HOME/bin/java" + fi + else + JAVACMD="`\\unset -f command; \\command -v java`" + fi +fi + +if [ ! -x "$JAVACMD" ] ; then + echo "Error: JAVA_HOME is not defined correctly." >&2 + echo " We cannot execute $JAVACMD" >&2 + exit 1 +fi + +if [ -z "$JAVA_HOME" ] ; then + echo "Warning: JAVA_HOME environment variable is not set." +fi + +CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher + +# traverses directory structure from process work directory to filesystem root +# first directory with .mvn subdirectory is considered project base directory +find_maven_basedir() { + + if [ -z "$1" ] + then + echo "Path not specified to find_maven_basedir" + return 1 + fi + + basedir="$1" + wdir="$1" + while [ "$wdir" != '/' ] ; do + if [ -d "$wdir"/.mvn ] ; then + basedir=$wdir + break + fi + # workaround for JBEAP-8937 (on Solaris 10/Sparc) + if [ -d "${wdir}" ]; then + wdir=`cd "$wdir/.."; pwd` + fi + # end of workaround + done + echo "${basedir}" +} + +# concatenates all lines of a file +concat_lines() { + if [ -f "$1" ]; then + echo "$(tr -s '\n' ' ' < "$1")" + fi +} + +BASE_DIR=`find_maven_basedir "$(pwd)"` +if [ -z "$BASE_DIR" ]; then + exit 1; +fi + +########################################################################################## +# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central +# This allows using the maven wrapper in projects that prohibit checking in binary data. +########################################################################################## +if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then + if [ "$MVNW_VERBOSE" = true ]; then + echo "Found .mvn/wrapper/maven-wrapper.jar" + fi +else + if [ "$MVNW_VERBOSE" = true ]; then + echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..." + fi + if [ -n "$MVNW_REPOURL" ]; then + jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar" + else + jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar" + fi + while IFS="=" read key value; do + case "$key" in (wrapperUrl) jarUrl="$value"; break ;; + esac + done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties" + if [ "$MVNW_VERBOSE" = true ]; then + echo "Downloading from: $jarUrl" + fi + wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" + if $cygwin; then + wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"` + fi + + if command -v wget > /dev/null; then + if [ "$MVNW_VERBOSE" = true ]; then + echo "Found wget ... using wget" + fi + if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then + wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath" + else + wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath" + fi + elif command -v curl > /dev/null; then + if [ "$MVNW_VERBOSE" = true ]; then + echo "Found curl ... using curl" + fi + if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then + curl -o "$wrapperJarPath" "$jarUrl" -f + else + curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f + fi + + else + if [ "$MVNW_VERBOSE" = true ]; then + echo "Falling back to using Java to download" + fi + javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java" + # For Cygwin, switch paths to Windows format before running javac + if $cygwin; then + javaClass=`cygpath --path --windows "$javaClass"` + fi + if [ -e "$javaClass" ]; then + if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then + if [ "$MVNW_VERBOSE" = true ]; then + echo " - Compiling MavenWrapperDownloader.java ..." + fi + # Compiling the Java class + ("$JAVA_HOME/bin/javac" "$javaClass") + fi + if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then + # Running the downloader + if [ "$MVNW_VERBOSE" = true ]; then + echo " - Running MavenWrapperDownloader.java ..." + fi + ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR") + fi + fi + fi +fi +########################################################################################## +# End of extension +########################################################################################## + +export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"} +if [ "$MVNW_VERBOSE" = true ]; then + echo $MAVEN_PROJECTBASEDIR +fi +MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS" + +# For Cygwin, switch paths to Windows format before running java +if $cygwin; then + [ -n "$M2_HOME" ] && + M2_HOME=`cygpath --path --windows "$M2_HOME"` + [ -n "$JAVA_HOME" ] && + JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` + [ -n "$CLASSPATH" ] && + CLASSPATH=`cygpath --path --windows "$CLASSPATH"` + [ -n "$MAVEN_PROJECTBASEDIR" ] && + MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"` +fi + +# Provide a "standardized" way to retrieve the CLI args that will +# work with both Windows and non-Windows executions. +MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@" +export MAVEN_CMD_LINE_ARGS + +WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain + +exec "$JAVACMD" \ + $MAVEN_OPTS \ + $MAVEN_DEBUG_OPTS \ + -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \ + "-Dmaven.home=${M2_HOME}" \ + "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \ + ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@" diff --git a/mybatis_study/mvnw.cmd b/mybatis_study/mvnw.cmd new file mode 100644 index 0000000..1d8ab01 --- /dev/null +++ b/mybatis_study/mvnw.cmd @@ -0,0 +1,188 @@ +@REM ---------------------------------------------------------------------------- +@REM Licensed to the Apache Software Foundation (ASF) under one +@REM or more contributor license agreements. See the NOTICE file +@REM distributed with this work for additional information +@REM regarding copyright ownership. The ASF licenses this file +@REM to you under the Apache License, Version 2.0 (the +@REM "License"); you may not use this file except in compliance +@REM with the License. You may obtain a copy of the License at +@REM +@REM https://www.apache.org/licenses/LICENSE-2.0 +@REM +@REM Unless required by applicable law or agreed to in writing, +@REM software distributed under the License is distributed on an +@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +@REM KIND, either express or implied. See the License for the +@REM specific language governing permissions and limitations +@REM under the License. +@REM ---------------------------------------------------------------------------- + +@REM ---------------------------------------------------------------------------- +@REM Maven Start Up Batch script +@REM +@REM Required ENV vars: +@REM JAVA_HOME - location of a JDK home dir +@REM +@REM Optional ENV vars +@REM M2_HOME - location of maven2's installed home dir +@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands +@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending +@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven +@REM e.g. to debug Maven itself, use +@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 +@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files +@REM ---------------------------------------------------------------------------- + +@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on' +@echo off +@REM set title of command window +title %0 +@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on' +@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO% + +@REM set %HOME% to equivalent of $HOME +if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%") + +@REM Execute a user defined script before this one +if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre +@REM check for pre script, once with legacy .bat ending and once with .cmd ending +if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %* +if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %* +:skipRcPre + +@setlocal + +set ERROR_CODE=0 + +@REM To isolate internal variables from possible post scripts, we use another setlocal +@setlocal + +@REM ==== START VALIDATION ==== +if not "%JAVA_HOME%" == "" goto OkJHome + +echo. +echo Error: JAVA_HOME not found in your environment. >&2 +echo Please set the JAVA_HOME variable in your environment to match the >&2 +echo location of your Java installation. >&2 +echo. +goto error + +:OkJHome +if exist "%JAVA_HOME%\bin\java.exe" goto init + +echo. +echo Error: JAVA_HOME is set to an invalid directory. >&2 +echo JAVA_HOME = "%JAVA_HOME%" >&2 +echo Please set the JAVA_HOME variable in your environment to match the >&2 +echo location of your Java installation. >&2 +echo. +goto error + +@REM ==== END VALIDATION ==== + +:init + +@REM Find the project base dir, i.e. the directory that contains the folder ".mvn". +@REM Fallback to current working directory if not found. + +set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR% +IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir + +set EXEC_DIR=%CD% +set WDIR=%EXEC_DIR% +:findBaseDir +IF EXIST "%WDIR%"\.mvn goto baseDirFound +cd .. +IF "%WDIR%"=="%CD%" goto baseDirNotFound +set WDIR=%CD% +goto findBaseDir + +:baseDirFound +set MAVEN_PROJECTBASEDIR=%WDIR% +cd "%EXEC_DIR%" +goto endDetectBaseDir + +:baseDirNotFound +set MAVEN_PROJECTBASEDIR=%EXEC_DIR% +cd "%EXEC_DIR%" + +:endDetectBaseDir + +IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig + +@setlocal EnableExtensions EnableDelayedExpansion +for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a +@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS% + +:endReadAdditionalConfig + +SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe" +set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar" +set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain + +set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar" + +FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO ( + IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B +) + +@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central +@REM This allows using the maven wrapper in projects that prohibit checking in binary data. +if exist %WRAPPER_JAR% ( + if "%MVNW_VERBOSE%" == "true" ( + echo Found %WRAPPER_JAR% + ) +) else ( + if not "%MVNW_REPOURL%" == "" ( + SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar" + ) + if "%MVNW_VERBOSE%" == "true" ( + echo Couldn't find %WRAPPER_JAR%, downloading it ... + echo Downloading from: %DOWNLOAD_URL% + ) + + powershell -Command "&{"^ + "$webclient = new-object System.Net.WebClient;"^ + "if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^ + "$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^ + "}"^ + "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^ + "}" + if "%MVNW_VERBOSE%" == "true" ( + echo Finished downloading %WRAPPER_JAR% + ) +) +@REM End of extension + +@REM Provide a "standardized" way to retrieve the CLI args that will +@REM work with both Windows and non-Windows executions. +set MAVEN_CMD_LINE_ARGS=%* + +%MAVEN_JAVA_EXE% ^ + %JVM_CONFIG_MAVEN_PROPS% ^ + %MAVEN_OPTS% ^ + %MAVEN_DEBUG_OPTS% ^ + -classpath %WRAPPER_JAR% ^ + "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^ + %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %* +if ERRORLEVEL 1 goto error +goto end + +:error +set ERROR_CODE=1 + +:end +@endlocal & set ERROR_CODE=%ERROR_CODE% + +if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost +@REM check for post script, once with legacy .bat ending and once with .cmd ending +if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat" +if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd" +:skipRcPost + +@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on' +if "%MAVEN_BATCH_PAUSE%"=="on" pause + +if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE% + +cmd /C exit /B %ERROR_CODE% diff --git a/mybatis_study/pom.xml b/mybatis_study/pom.xml new file mode 100644 index 0000000..4b2deaa --- /dev/null +++ b/mybatis_study/pom.xml @@ -0,0 +1,86 @@ + + + 4.0.0 + + org.springframework.boot + spring-boot-starter-parent + 2.7.9 + + + cc.bnblogs + mybatis_study + 0.0.1-SNAPSHOT + mybatis_study + mybatis_study + + 1.8 + + + + org.springframework.boot + spring-boot-starter-web + + + + org.springframework.boot + spring-boot-devtools + runtime + true + + + com.mysql + mysql-connector-j + runtime + + + + org.projectlombok + lombok + true + + + + org.springframework.boot + spring-boot-starter-test + test + + + + com.baomidou + mybatis-plus-boot-starter + 3.5.3.1 + + + + com.baomidou + mybatis-plus-generator + 3.5.3.1 + + + + org.springframework.boot + spring-boot-starter-jdbc + 3.0.3 + + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + org.projectlombok + lombok + + + + + + + + diff --git a/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/MybatisStudyApplication.java b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/MybatisStudyApplication.java new file mode 100644 index 0000000..586bef4 --- /dev/null +++ b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/MybatisStudyApplication.java @@ -0,0 +1,13 @@ +package cc.bnblogs.mybatis_study; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class MybatisStudyApplication { + + public static void main(String[] args) { + SpringApplication.run(MybatisStudyApplication.class, args); + } + +} diff --git a/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/config/MybatisConfig.java b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/config/MybatisConfig.java new file mode 100644 index 0000000..f90b70b --- /dev/null +++ b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/config/MybatisConfig.java @@ -0,0 +1,17 @@ +package cc.bnblogs.mybatis_study.config; + +import com.baomidou.mybatisplus.annotation.DbType; +import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor; +import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; + +@Configuration +public class MybatisConfig { + @Bean + public MybatisPlusInterceptor mybatisPlusInterceptor() { + MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor(); + interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL)); + return interceptor; + } +} \ No newline at end of file diff --git a/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/controller/UserController.java b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/controller/UserController.java new file mode 100644 index 0000000..b783b32 --- /dev/null +++ b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/controller/UserController.java @@ -0,0 +1,40 @@ +package cc.bnblogs.mybatis_study.controller; + +import cc.bnblogs.mybatis_study.mapper.UserMapper; +import cc.bnblogs.mybatis_study.pojo.User; +import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.web.bind.annotation.*; + +/** + * @description: + * @author: zfp@bnblogs.cc + * @date: 2023/3/6 14:43 + */ +@RestController +@RequestMapping("/user") +public class UserController { + @Autowired + private UserMapper userMapper; + + @GetMapping("/id/{id}/") + public User getUserById(@PathVariable Integer id) { + QueryWrapper qw = new QueryWrapper<>(); + qw.eq("id",id); + return userMapper.selectOne(qw); + } + + @GetMapping("/name/{username}/") + public User getUserByName(@PathVariable String username) { + QueryWrapper qw = new QueryWrapper<>(); + qw.eq("name", username); + return userMapper.selectOne(qw); + } + @GetMapping("/get/") + public User getUserInfo(@RequestParam Integer id,@RequestParam String name) { + QueryWrapper qw = new QueryWrapper<>(); + qw.eq("id",id); + qw.eq("name",name); + return userMapper.selectOne(qw); + } +} diff --git a/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/mapper/UserMapper.java b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/mapper/UserMapper.java new file mode 100644 index 0000000..c0e0990 --- /dev/null +++ b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/mapper/UserMapper.java @@ -0,0 +1,26 @@ +package cc.bnblogs.mybatis_study.mapper; + +import cc.bnblogs.mybatis_study.pojo.User; +import com.baomidou.mybatisplus.core.conditions.Wrapper; +import com.baomidou.mybatisplus.core.mapper.BaseMapper; +import com.baomidou.mybatisplus.extension.plugins.pagination.Page; +import org.apache.ibatis.annotations.Mapper; +import org.apache.ibatis.annotations.Param; +import org.apache.ibatis.annotations.Select; + +/** + * @description: + * @author: zfp@bnblogs.cc + * @date: 2023/3/6 14:24 + */ +@Mapper +public interface UserMapper extends BaseMapper { + /** + * 将超过一定age的数据进行分页处理 + * @param page + * @param age + * @return 分页器 + */ + @Select("select * from user where age >= ${age}") + Page selectByAge(Page page, Integer age); +} diff --git a/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/pojo/User.java b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/pojo/User.java new file mode 100644 index 0000000..ba53f58 --- /dev/null +++ b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/pojo/User.java @@ -0,0 +1,29 @@ +package cc.bnblogs.mybatis_study.pojo; + +import com.baomidou.mybatisplus.annotation.IdType; +import com.baomidou.mybatisplus.annotation.TableField; +import com.baomidou.mybatisplus.annotation.TableId; +import com.baomidou.mybatisplus.annotation.TableName; +import lombok.AllArgsConstructor; +import lombok.Data; +import lombok.NoArgsConstructor; + +/** + * @description: + * @author: zfp@bnblogs.cc + * @date: 2023/3/6 14:23 + */ + +@Data +@NoArgsConstructor +@AllArgsConstructor +@TableName("user") +public class User { + @TableId(type = IdType.AUTO) + private Integer id; + + @TableField("name") + private String name; + private Integer age; + private String email; +} \ No newline at end of file diff --git a/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/service/UserService.java b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/service/UserService.java new file mode 100644 index 0000000..62fdec6 --- /dev/null +++ b/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/service/UserService.java @@ -0,0 +1,15 @@ +package cc.bnblogs.mybatis_study.service; + +import cc.bnblogs.mybatis_study.mapper.UserMapper; +import cc.bnblogs.mybatis_study.pojo.User; +import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl; +import org.springframework.stereotype.Service; + +/** + * @description: + * @author: zfp@bnblogs.cc + * @date: 2023/3/6 18:23 + */ +@Service +public class UserService extends ServiceImpl { +} diff --git a/mybatis_study/src/main/resources/application.properties b/mybatis_study/src/main/resources/application.properties new file mode 100644 index 0000000..8f9f3f2 --- /dev/null +++ b/mybatis_study/src/main/resources/application.properties @@ -0,0 +1,4 @@ +spring.datasource.username=root +spring.datasource.password=zfp251217 +spring.datasource.url=jdbc:mysql://192.168.153.131:3306/study?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8 +spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver diff --git a/mybatis_study/src/test/java/cc/bnblogs/mybatis_study/MybatisStudyApplicationTests.java b/mybatis_study/src/test/java/cc/bnblogs/mybatis_study/MybatisStudyApplicationTests.java new file mode 100644 index 0000000..78089f3 --- /dev/null +++ b/mybatis_study/src/test/java/cc/bnblogs/mybatis_study/MybatisStudyApplicationTests.java @@ -0,0 +1,259 @@ +package cc.bnblogs.mybatis_study; + +import cc.bnblogs.mybatis_study.mapper.UserMapper; +import cc.bnblogs.mybatis_study.pojo.User; +import cc.bnblogs.mybatis_study.service.UserService; +import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper; +import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; +import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper; +import com.baomidou.mybatisplus.core.metadata.IPage; +import com.baomidou.mybatisplus.extension.plugins.pagination.Page; +import org.junit.jupiter.api.Test; +import org.mybatis.spring.annotation.MapperScan; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.context.SpringBootTest; + +import javax.annotation.Resource; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +@SpringBootTest +class MybatisStudyApplicationTests { + + @Autowired + private UserMapper userMapper; + @Autowired + private UserService service; + + @Test + public void testSelect() { + List list = new ArrayList<>(); + list.add(1L); + list.add(3L); + list.add(5L); + userMapper.deleteBatchIds(list); + // 查询表中所有数据 + List userList = userMapper.selectList(null); + userList.forEach(System.out::println); + } + + @Test + public void insertTest() { + User u = new User(1, "aaa", 19, "111@qq.com"); + userMapper.updateById(u); + } + + @Test + void simpleSelect() { + System.out.println("service.count() = " + service.count()); + System.out.println("service.list() = " + service.list()); + System.out.println("service.listMaps() = " + service.listMaps()); + System.out.println("service.listObjs() = " + service.listObjs()); + System.out.println("service.getById(1580903310957416450L) = " + service.getById(1580903310957416450L)); + } + + @Test + void insertData() { + // 存入一个user + User user = new User(null, "zzz", 18, "aa"); +// service.save(user); + // 批量存入 + List list = new ArrayList<>(); + list.add(user); + list.add(user); + list.add(user); + service.saveBatch(list); + // 查看所有数据 + service.list().forEach(System.out::println); + } + + @Test + void insertUpdate() { + System.out.println("service.list() = " + service.list()); + User user = new User(null, "9999", 20, "xxx@qq.com"); + // 根据主键进行插入或者更新某条记录，如果数据库中不存在这个主键，那么将会进行插入； + // 如果存在这个主键，就进行更新这条记录 + service.saveOrUpdate(user); + System.out.println("service.list() = " + service.list()); + } + + @Test + void insertBatch() { + service.list().forEach(System.out::println); + } + + @Test + void select() { + System.out.println("service.count() = " + service.count()); + System.out.println("service.list() = " + service.list()); + System.out.println("service.listMaps() = " + service.listMaps()); + System.out.println("service.listObjs() = " + service.listObjs()); + System.out.println("service.getById(1) = " + service.getById(1)); + } + + @Test + void test() { + QueryWrapper queryWrapper = new QueryWrapper<>(); + queryWrapper.ge("id", 5) + .or(qw -> qw.ge("age",25).le("age",100)); +// 小于 +// queryWrapper.lt("id", 3); + +// 小于等于 +// queryWrapper.le("id", 3); + +// 大于 +// queryWrapper.gt("id", 2); + +// 大于等于 +// queryWrapper.ge("id", 3); + +// 等于 +// queryWrapper.eq("id", 3); + +// 不等于 +// queryWrapper.ne("id", 2); + +// 联合起来写，代表大于等于2且小于等于5，且不等于3 +// queryWrapper.ge("id", 2) +// .le("id", 5) +// .ne("id", 3); + +// between条件 +// queryWrapper.between("id", 2, 4); // id在2到4 + +// like条件 +// queryWrapper.like("name", "J%"); + +// not like +// queryWrapper.notLike("name", "%a%"); + +// 查询某几个字段 +// queryWrapper.select("id", "name"); + + /* + 也可以使用group by，select中也可以写别名 + */ +// queryWrapper.groupBy("age"); +// queryWrapper.select("age 年龄", "count(*) 数量"); +// queryWrapper.select("age as 年龄", "count(*) as 数量"); + +// in的用法 +// queryWrapper.in("id", 2, 3, 4); +// queryWrapper.in("id", List.of(2, 3, 4)); + +// not in +// queryWrapper.notIn("id", 2, 3, 5); +// queryWrapper.notIn("id", List.of(2, 3, 5)); // jdk 9新API + +// 排序 +// 正序 +// queryWrapper.orderBy(true, true, "id"); +// queryWrapper.orderByAsc("id"); +// 倒序 +// queryWrapper.orderBy(true, true, "id"); +// queryWrapper.orderByDesc("id"); + +// ((id >= ?) OR (age >= ? AND age <= ?)) +// queryWrapper.ge("id", 5) +// .or() +// .ge("age", 25) +// .le("age", 100); + + +// queryWrapper.ge("id", 5) +// .or(wrapper -> wrapper.ge("age", 25).le("age", 100)); + +// queryWrapper.isNull("列名").isNotNull("列名") + userMapper.selectList(queryWrapper).forEach(System.out::println); + } + + + @Test + void delete() { + service.removeById(1); + List list = new ArrayList<>(); + list.add(1); + list.add(2); + list.add(3); + service.removeByIds(list); + list.add(4); + service.removeBatchByIds(list); + System.out.println("service.list() = " + service.list()); + HashMap map = new HashMap<>(); + map.put("id", 5); + map.put("name", "Billie"); + service.removeByMap(map); + System.out.println("service.list() = " + service.list()); + } + + + @Test + void condition() { +// QueryWrapper qw = new QueryWrapper<>(); +// qw.select("max(age) as max,min(age) as min"); +// List> res = userMapper.selectMaps(qw); +// System.out.println(res.get(0)); +// System.out.println(Integer.valueOf(res.get(0).get("max").toString())); +// System.out.println(Integer.valueOf(res.get(0).get("min").toString())); + + + QueryWrapper queryWrapper = new QueryWrapper<>(); + String name = "名称"; + Integer minAge = 10, maxAge = 1500; + /** + * 如果名字不为空，会按照名称进行查询 + * 如果最小年龄不为空，同时也会将这个条件加进去 + * 如果最大年龄不会空，也会将这个条件加进去 + */ + queryWrapper.eq(name != null, "name", name); + queryWrapper.ge(minAge != null, "age", minAge); + queryWrapper.le(maxAge != null, "age", maxAge); + userMapper.selectList(queryWrapper); + } + + @Test + void lambdaQueryWrapperTest() { + LambdaQueryWrapper lqw = new LambdaQueryWrapper<>(); + lqw.select(User::getName,User::getAge); + userMapper.selectMaps(lqw).forEach(System.out::println); + } + + @Test + public void selectByWrapperPage() { + QueryWrapper queryWrapper = new QueryWrapper<>(); + Page page = new Page<>(1,10); + IPage iPage = userMapper.selectPage(page, queryWrapper); + + System.out.println("总页数: " + iPage.getPages()); + System.out.println("数据总数: " + iPage.getTotal()); + // 返回分页数据 + List userList = iPage.getRecords(); + userList.forEach(System.out::println); + + // 获取分页的其他信息 + System.out.println("当前页号 = " + iPage.getCurrent()); + System.out.println("页大小 = " + iPage.getSize()); + } + + @Test + public void selectByWrapperPageByAge() { + QueryWrapper queryWrapper = new QueryWrapper<>(); + Page page = new Page<>(1,3); + IPage iPage = userMapper.selectByAge(page,25); + iPage.getRecords().forEach(System.out::println); + + System.out.println("总页数: " + iPage.getPages()); + System.out.println("数据总数: " + iPage.getTotal()); + // 返回分页数据 + List userList = iPage.getRecords(); + userList.forEach(System.out::println); + + // 获取分页的其他信息 + System.out.println("当前页号 = " + iPage.getCurrent()); + System.out.println("页大小 = " + iPage.getSize()); + } + +}