diff --git a/examples/chapter05/spring-boot-web-demo/settings.gradle b/examples/chapter05/spring-boot-web-demo/settings.gradle index a0e6965..c64e708 100644 --- a/examples/chapter05/spring-boot-web-demo/settings.gradle +++ b/examples/chapter05/spring-boot-web-demo/settings.gradle @@ -1,2 +1,2 @@ -rootProject.name = 'spring-boot-application' +rootProject.name = 'spring-boot-web-demo' diff --git a/examples/chapter06/spring-boot-jpa-demo/.gitignore b/examples/chapter06/spring-boot-jpa-demo/.gitignore new file mode 100644 index 0000000..b63da45 --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/.gitignore @@ -0,0 +1,42 @@ +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### IntelliJ IDEA ### +.idea/modules.xml +.idea/jarRepositories.xml +.idea/compiler.xml +.idea/libraries/ +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### Eclipse ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ + +### Mac OS ### +.DS_Store \ No newline at end of file diff --git a/examples/chapter06/spring-boot-jpa-demo/build.gradle b/examples/chapter06/spring-boot-jpa-demo/build.gradle new file mode 100644 index 0000000..e137f3d --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/build.gradle @@ -0,0 +1,35 @@ +plugins { + id 'java' + id 'org.springframework.boot' version '3.3.5' + id 'io.spring.dependency-management' version '1.1.6' +} + +group = 'com.lk.demo' +version = '1.0-SNAPSHOT' + +java { + toolchain { + languageVersion = JavaLanguageVersion.of(17) + } +} + +repositories { + mavenLocal() + maven { url 'https://mirrors.cloud.tencent.com/nexus/repository/maven-public/' } + maven { url 'https://maven.aliyun.com/repository/central' } + maven { url 'https://maven.aliyun.com/repository/public' } + mavenCentral() +} + +dependencies { + implementation 'org.springframework.boot:spring-boot-starter-web' + runtimeOnly 'com.mysql:mysql-connector-j' + implementation 'org.springframework.boot:spring-boot-starter-data-jpa' + testImplementation platform('org.junit:junit-bom:5.10.0') + testImplementation 'org.junit.jupiter:junit-jupiter' +} + +test { + useJUnitPlatform() +} + diff --git a/examples/chapter06/spring-boot-jpa-demo/gradle/wrapper/gradle-wrapper.jar b/examples/chapter06/spring-boot-jpa-demo/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..249e583 Binary files /dev/null and b/examples/chapter06/spring-boot-jpa-demo/gradle/wrapper/gradle-wrapper.jar differ diff --git a/examples/chapter06/spring-boot-jpa-demo/gradle/wrapper/gradle-wrapper.properties b/examples/chapter06/spring-boot-jpa-demo/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..43aa039 --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +#Sat Oct 26 17:29:35 CST 2024 +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/examples/chapter06/spring-boot-jpa-demo/gradlew b/examples/chapter06/spring-boot-jpa-demo/gradlew new file mode 100644 index 0000000..1b6c787 --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/gradlew @@ -0,0 +1,234 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original authors. +# +# Licensed 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. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$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=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/examples/chapter06/spring-boot-jpa-demo/gradlew.bat b/examples/chapter06/spring-boot-jpa-demo/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem 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, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/examples/chapter06/spring-boot-jpa-demo/settings.gradle b/examples/chapter06/spring-boot-jpa-demo/settings.gradle new file mode 100644 index 0000000..e0ab1bf --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/settings.gradle @@ -0,0 +1,2 @@ +rootProject.name = 'spring-boot-jpa-demo' + diff --git a/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/JdbcCrudExample.java b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/JdbcCrudExample.java new file mode 100644 index 0000000..9079233 --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/JdbcCrudExample.java @@ -0,0 +1,107 @@ +package com.lk.demo; + +import java.sql.Connection; +import java.sql.DriverManager; +import java.sql.PreparedStatement; +import java.sql.ResultSet; +import java.sql.SQLException; + +public class JdbcCrudExample { + + private static final String DB_URL = "jdbc:mysql://localhost:3306/paopao"; + private static final String USER = "root"; + private static final String PASS = "root"; + + public static void main(String[] args) { + Connection conn = null; + try { + // 加载MySQL驱动 + Class.forName("com.mysql.cj.jdbc.Driver"); + + // 获取数据库连接 + conn = DriverManager.getConnection(DB_URL, USER, PASS); + + // 创建表 + createTable(conn); + + // 插入记录 + insertUser(conn, "Alice", 28); + insertUser(conn, "Bob", 32); + + // 查询记录 + queryUsers(conn); + + // 更新记录 + updateUser(conn, "Alice", 29); + + // 删除记录 + deleteUser(conn, "Bob"); + + // 再次查询记录 + queryUsers(conn); + + } catch (ClassNotFoundException | SQLException e) { + e.printStackTrace(); + } finally { + if (conn != null) { + try { + conn.close(); + } catch (SQLException e) { + e.printStackTrace(); + } + } + } + } + + private static void createTable(Connection conn) throws SQLException { + String sql = "CREATE TABLE IF NOT EXISTS users (" + + "id INT AUTO_INCREMENT PRIMARY KEY," + + "name VARCHAR(255) NOT NULL," + + "age INT)"; + PreparedStatement stmt = conn.prepareStatement(sql); + stmt.executeUpdate(); + stmt.close(); + } + + private static void insertUser(Connection conn, String name, int age) throws SQLException { + String sql = "INSERT INTO users (name, age) VALUES (?, ?)"; + PreparedStatement pstmt = conn.prepareStatement(sql); + pstmt.setString(1, name); + pstmt.setInt(2, age); + pstmt.executeUpdate(); + pstmt.close(); + } + + private static void queryUsers(Connection conn) throws SQLException { + String sql = "SELECT * FROM users"; + PreparedStatement pstmt = conn.prepareStatement(sql); + ResultSet rs = pstmt.executeQuery(); + while (rs.next()) { + int id = rs.getInt("id"); + String name = rs.getString("name"); + int age = rs.getInt("age"); + System.out.println("ID: " + id + ", Name: " + name + ", Age: " + age); + } + rs.close(); + pstmt.close(); + } + + private static void updateUser(Connection conn, String name, int age) throws SQLException { + String sql = "UPDATE users SET age = ? WHERE name = ?"; + PreparedStatement pstmt = conn.prepareStatement(sql); + pstmt.setInt(1, age); + pstmt.setString(2, name); + int rowsUpdated = pstmt.executeUpdate(); + System.out.println(rowsUpdated + " row(s) updated."); + pstmt.close(); + } + + private static void deleteUser(Connection conn, String name) throws SQLException { + String sql = "DELETE FROM users WHERE name = ?"; + PreparedStatement pstmt = conn.prepareStatement(sql); + pstmt.setString(1, name); + int rowsDeleted = pstmt.executeUpdate(); + System.out.println(rowsDeleted + " row(s) deleted."); + pstmt.close(); + } +} \ No newline at end of file diff --git a/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/MyWebApplication.java b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/MyWebApplication.java new file mode 100644 index 0000000..9a593aa --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/MyWebApplication.java @@ -0,0 +1,16 @@ +package com.lk.demo; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.AutoConfiguration; +import org.springframework.boot.autoconfigure.EnableAutoConfiguration; +import org.springframework.boot.autoconfigure.SpringBootApplication; + + +@SpringBootApplication +public class MyWebApplication { + + public static void main(String[] args) { + SpringApplication.run(MyWebApplication.class, args); + } + +} \ No newline at end of file diff --git a/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/User.java b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/User.java new file mode 100644 index 0000000..3f55356 --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/User.java @@ -0,0 +1,58 @@ +package com.lk.demo; + +public class User { + private Long id; + private String name; + private String password; + private String email; + private String phone; + private Integer age; + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public String getEmail() { + return email; + } + + public void setEmail(String email) { + this.email = email; + } + + public String getPhone() { + return phone; + } + + public void setPhone(String phone) { + this.phone = phone; + } + + public Long getId() { + return id; + } + + public void setId(Long id) { + this.id = id; + } + + public Integer getAge() { + return age; + } + + public void setAge(Integer age) { + this.age = age; + } + + public String getPassword() { + return password; + } + + public void setPassword(String password) { + this.password = password; + } +} diff --git a/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/UserController.java b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/UserController.java new file mode 100644 index 0000000..c65b0e5 --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/UserController.java @@ -0,0 +1,92 @@ +package com.lk.demo; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.web.bind.annotation.*; + +import java.util.ArrayList; +import java.util.List; + +@RestController +@RequestMapping("/users") +public class UserController { + + @Autowired + UserService userService; + /** + * 获取指定ID的用户信息 + * Method: GET + * URL: /users/{id} + * 输入参数: + * - @PathVariable Long id: 用户ID + * 返回数据结构: + * - User对象，包含id, name, age + */ + @GetMapping("/{id}") + public User getUser(@PathVariable Long id){ + System.out.println("Got id from http request: " + id); + return userService.getUser(id); + } + + /** + * 根据名称分页查询用户列表 + * Method: GET + * URL: /users?name={name}&page={page}&pageSize={pageSize} + * 输入参数: + * - @RequestParam String name: 用户名称 + * - @RequestParam int page: 当前页码 + * - @RequestParam int pageSize: 每页大小 + * 返回数据结构: + * - List 用户列表，每个User对象包含id, name, age + */ + @GetMapping("") + public List findUsers(@RequestParam("name") String name, @RequestParam int page, @RequestParam int pageSize){ + System.out.println("Got name: " + name+ " page: " + page+ " pageSize: " + pageSize); + return userService.queryUsers(); + } + + /** + * 创建新用户 + * Method: POST + * URL: /users + * 输入参数: + * - @RequestBody User user: 用户对象，包含name, age, password,email + * 返回数据结构: + * - User对象，包含id, name, age, password,email + */ + @PostMapping + public User createUser(@RequestBody User user){ + System.out.println("Got name: "+user.getName()+ "pass:" +user.getPassword()); + return userService.createUser(user); + } + + /** + * 更新指定ID的用户信息 + * Method: PUT + * URL: /users/{id} + * 输入参数: + * - @PathVariable Long id: 用户ID + * - @RequestBody User user: 用户对象，包含name, age, password + * 返回数据结构: + * - User对象，包含id, name, age, password + */ + @PutMapping("/{id}") + public User updateUser(@PathVariable Long id, @RequestBody User user){ + System.out.println("Got id: "+id+ "name: "+user.getName()+ " pass:" +user.getPassword()+" age: "+user.getAge()); + return userService.updateUser(id, user); + } + + /** + * 删除指定ID的用户 + * Method: DELETE + * URL: /users/{id} + * 输入参数: + * - @PathVariable Long id: 用户ID + * 返回数据结构: + * - String "ok" 表示删除成功 + */ + @DeleteMapping("/{id}") + public String deleteUser(@PathVariable Long id){ + System.out.println("delete id: "+id); + return "ok"; + } +} diff --git a/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/UserService.java b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/UserService.java new file mode 100644 index 0000000..1e6989a --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/src/main/java/com/lk/demo/UserService.java @@ -0,0 +1,48 @@ +package com.lk.demo; + +import org.springframework.stereotype.Service; +import org.springframework.web.bind.annotation.PathVariable; +import org.springframework.web.bind.annotation.RequestBody; + +import java.util.ArrayList; +import java.util.List; + +@Service +public class UserService { + + public User getUser(Long id){ + User user = new User(); + user.setId(id); + user.setName("lk"); + user.setAge(18); + return user; + } + + + public List queryUsers(){ + List users = new ArrayList<>(); + User u1 = new User(); + u1.setName("John"); + u1.setEmail("john@gmail.com"); + u1.setPhone("123456789"); + users.add(u1); + User u2 = new User(); + u2.setName("Mike"); + u2.setEmail("mike@gmail.com"); + u2.setPhone("123456789"); + users.add(u2); + return users; + } + + + public User createUser(User user){ + user.setId(22L); + return user; + } + + public User updateUser(Long id, User user){ + user.setId(id); + return user; + } + +} diff --git a/examples/chapter06/spring-boot-jpa-demo/src/main/resources/application.yml b/examples/chapter06/spring-boot-jpa-demo/src/main/resources/application.yml new file mode 100644 index 0000000..57928b3 --- /dev/null +++ b/examples/chapter06/spring-boot-jpa-demo/src/main/resources/application.yml @@ -0,0 +1,16 @@ +spring: + jackson: + property-naming-strategy: SNAKE_CASE # 驼峰转下划线 + datasource: + url: jdbc:mysql://localhost:3306/paopao?useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true # MySQL连接URL，paopao是数据库名 + driverClassName: com.mysql.cj.jdbc.Driver # MySQL的Driver类名 + username: root # MySQL用户名 + password: root # MySQL密码 + jpa: + show-sql: true + open-in-view: false + defer-datasource-initialization: true + database-platform: org.hibernate.dialect.MySQL8Dialect # 修改为MySQL的Dialect + hibernate: + ddl-auto: update # 根据需要调整，update适用于开发和某些生产环境 + format_sql: true # 保持原样，用于格式化SQL输出 \ No newline at end of file