学习使用mybatis-plus

1 year ago · 0186dfd7f8
parent 511785edf0
commit 0186dfd7f8
14 changed files with 1044 additions and 0 deletions
--- a/mybatis_study/.gitignore
+++ 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/
--- a/mybatis_study/.mvn/wrapper/maven-wrapper.jar
+++ b/mybatis_study/.mvn/wrapper/maven-wrapper.jar
--- a/mybatis_study/.mvn/wrapper/maven-wrapper.properties
+++ 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
--- a/mybatis_study/mvnw
+++ 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} $MAVEN_CONFIG "$@"
--- a/mybatis_study/mvnw.cmd
+++ 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%
--- a/mybatis_study/pom.xml
+++ b/mybatis_study/pom.xml
@ -0,0 +1,86 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.7.9</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>cc.bnblogs</groupId>
+    <artifactId>mybatis_study</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>mybatis_study</name>
+    <description>mybatis_study</description>
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <scope>runtime</scope>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>com.mysql</groupId>
+            <artifactId>mysql-connector-j</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-boot-starter</artifactId>
+            <version>3.5.3.1</version>
+        </dependency>
+
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-generator</artifactId>
+            <version>3.5.3.1</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-jdbc</artifactId>
+            <version>3.0.3</version>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
--- a/mybatis_study/src/main/java/cc/bnblogs/mybatis_study/MybatisStudyApplication.java
+++ 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);
+    }
+
+}
--- 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
@ -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;
+    }
+}
--- 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
@ -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<User> qw = new QueryWrapper<>();
+        qw.eq("id",id);
+        return userMapper.selectOne(qw);
+    }
+
+    @GetMapping("/name/{username}/")
+    public User getUserByName(@PathVariable String username) {
+        QueryWrapper<User> qw = new QueryWrapper<>();
+        qw.eq("name", username);
+        return userMapper.selectOne(qw);
+    }
+    @GetMapping("/get/")
+    public User getUserInfo(@RequestParam Integer id,@RequestParam String name) {
+        QueryWrapper<User> qw = new QueryWrapper<>();
+        qw.eq("id",id);
+        qw.eq("name",name);
+        return userMapper.selectOne(qw);
+    }
+}
--- 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
@ -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<User> {
+    /**
+     * 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<User> selectByAge(Page<User> page, Integer age);
+}
--- 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
@ -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;
+}
--- 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
@ -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<UserMapper, User> {
+}
--- a/mybatis_study/src/main/resources/application.properties
+++ 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
--- a/mybatis_study/src/test/java/cc/bnblogs/mybatis_study/MybatisStudyApplicationTests.java
+++ 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<Long> list = new ArrayList<>();
+        list.add(1L);
+        list.add(3L);
+        list.add(5L);
+        userMapper.deleteBatchIds(list);
+        // 查询表中所有数据
+        List<User> 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<User> 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<User> 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<Integer> 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<String, Object> 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<User> qw = new QueryWrapper<>();
+//        qw.select("max(age) as max,min(age) as min");
+//        List<Map<String, Object>> 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<User> 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<User> lqw = new LambdaQueryWrapper<>();
+        lqw.select(User::getName,User::getAge);
+        userMapper.selectMaps(lqw).forEach(System.out::println);
+    }
+
+    @Test
+    public void selectByWrapperPage() {
+        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
+        Page<User> page = new Page<>(1,10);
+        IPage<User> 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<User> 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<User> queryWrapper = new QueryWrapper<>();
+        Page<User> page = new Page<>(1,3);
+        IPage<User> 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<User> 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());
+    }
+
+}