Spring Boot图书管理系统项目实战-2.项目搭建

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pre：  1.系统功能和架构介绍

next：3.用户登录

只挑重点的讲，具体的请看项目源码。

1.项目源码：

需要源码的朋友，请捐赠任意金额后留下邮箱发送：）

2.添加依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--spring security-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <!--thymeleaf-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-springsecurity5</artifactId>
        </dependency>
        <!--mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>

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

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!--SpringBoot热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.47</version>
        </dependency>

        <!--JDBC-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <!--commons-lang3-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.8.1</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <resources>
            <!-- fonts file cannot use filter as the data structure of byte file will be changed via filter -->
            <resource>
                <directory>src/main/resources</directory>
                <filtering>false</filtering>
                <includes>
                    <include>static/layui/font/**</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>
        </resources>
    </build>

3.配置文件application.yml

server:
  port: 8080
  servlet:
    context-path:
    session:
      timeout: 7200s
spring:
  mvc:
    static-path-pattern: /**
    date-format: yyyy-MM-dd
    favicon:
      enabled: true
    thymeleaf:
      encoding: UTF-8
      cache: false
      mode: HTML
      prefix: classpath:/templates/
      suffix: .html
  # 数据源
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    username: root
    password: root123
    url: jdbc:mysql://localhost:3306/bookman?characterEncoding=utf-8&useSSL=false
    type: com.zaxxer.hikari.HikariDataSource
    hikari:
      pool-name: BookHikariPool
      maximum-pool-size: 12
      connection-timeout: 60000
      connection-test-query: SELECT 1
  servlet:
    multipart:
      max-request-size: 100MB
      max-file-size: 50MB
# mybatis
mybatis:
  mapper-locations: classpath:mybatis/mapper/*.xml
  configuration:
    map-underscore-to-camel-case: true
# 文件上传路径
web:
  upload:
    path: D:/upload/

4.导入数据库

数据库脚本在：src/resources/bookman.sql

创建数据库：bookman  编码：UTF-8

执行SQL语句

5.工具类

5.1 文件上传

public class UploadUtils {
    public static String upload(MultipartFile file, String path, String fileName) throws Exception {
        // 生成新的文件名
        String realPath = path + "/" + UUID.randomUUID().toString().replace("-", "") + fileName.substring(fileName.lastIndexOf("."));
        File dest = new File(realPath);
        // 判断文件父目录是否存在
        if (!dest.getParentFile().exists()) {
            dest.getParentFile().mkdir();
        }
        // 保存文件
        file.transferTo(dest);
        return dest.getName();
    }
}

5.2 MD5

/**
 *  md5工具类
 */
public class MD5Util {
    public static final int time = 5;

    public static final String SALT = "springsecurity";

    /**
     * 密码加密方法
     *
     * @param password
     * @return
     */
    public static String encode(String password) {
        MessageDigest digest;
        try {
            digest = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new IllegalStateException("MD5 algorithm not available.  Fatal (should be in the JDK).");
        }
        try {
            for (int i = 0; i < time; i++) {
                byte[] bytes = digest.digest((password + SALT).getBytes("UTF-8"));
                password = String.format("%032x", new BigInteger(1, bytes));
            }
            return password;
        } catch (UnsupportedEncodingException e) {
            throw new IllegalStateException("UTF-8 encoding not available.  Fatal (should be in the JDK).");
        }
    }

    public static void main(String[] args) {
        System.out.println(MD5Util.encode("admin"));
    }
}

5.3 spring security

/**
 * @Description: spring security工具类
 * @Author laoxu
 * @Date 2019/5/11 17:20
 **/
public class SecurityUtil {
    public static String getLoginUser(){
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        if (!(authentication instanceof AnonymousAuthenticationToken)) {
            String currentUserName = authentication.getName();
            return currentUserName;
        }
        return "";
    }
}

6.配置类

6.1 MVC配置

/**  mvc配置，例如：资源映射、视图解析、拦截器等
 * @author laoxu
 * @create 2018-10-23
 **/

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    @Autowired
    SessionTimeoutInterceptor sessionTimeoutInterceptor;

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
        registry.addResourceHandler("/assets/ckeditor/**").
                addResourceLocations("classpath:/static/assets/ckeditor/").
                setCachePeriod(2592000);
    }

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("index");
        registry.addViewController("/index").setViewName("index");
        registry.addViewController("/login").setViewName("login");
        registry.addViewController("/success").setViewName("success");
        registry.addViewController("/admin").setViewName("admin");
        registry.addViewController("/book").setViewName("book");
        registry.addViewController("/bookAdd").setViewName("bookAdd");
        registry.addViewController("/bookEdit").setViewName("bookEdit");
        registry.addViewController("/bookBorrow").setViewName("bookBorrow");
        registry.addViewController("/bookBorrowAdd").setViewName("bookBorrowAdd");
        registry.addViewController("/bookBorrowEdit").setViewName("bookBorrowEdit");
        registry.addViewController("/bookReBorrow").setViewName("bookReBorrow");
        registry.addViewController("/bookReBorrowEdit").setViewName("bookReBorrowEdit");
        registry.addViewController("/bookReturn").setViewName("bookReturn");
        registry.addViewController("/bookCategory").setViewName("bookCategory");
        registry.addViewController("/bookLanguage").setViewName("bookLanguage");
        registry.addViewController("/bookPublisher").setViewName("bookPublisher");
        registry.addViewController("/bookShelf").setViewName("bookShelf");
        registry.addViewController("/bookReader").setViewName("bookReader");
        registry.addViewController("/bookStat").setViewName("bookStat");
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
       registry.addInterceptor(sessionTimeoutInterceptor).addPathPatterns("/**").
               excludePathPatterns("/api/book/list","/bookDetail/*","/","/index","/login","/static/**","/logout");
    }
}

6.2 统一返回结构

/**
 * 请求返回结果
 *
 * @author laoxu
 * @create 2018-10-23
 **/
public class Result<T> {
    private boolean success = true;
    private int code = ErrorStatus.OK.getCode();
    private String message = "";
    private T data;

    public static <T> Result<T> newInstance() {
        return new Result<T>();
    }

    public Result() {

    }

    public Result(T data) {
        this.data = data;
    }

    public Result(ErrorStatus status) {
        this.message = status.getMessage();
        this.code = status.getCode();
    }

    public Result(String message) {
        this.message = message;
    }

    public Result(int code, String message) {
        this.message = message;
        this.code = code;
    }

    public Result(int code, String message, T data) {
        this.message = message;
        this.code = code;
        this.data = data;
    }

    public Result<T> status(ErrorStatus status) {
        this.message = message;
        this.code = code;
        return this;
    }

    public Result<T> ok() {
        success = true;
        return this;
    }

    public Result<T> fail() {
        success = false;
        return this;
    }

    public Result<T> message(String message) {
        this.message = message;
        return this;
    }

    public Result<T> data(T data) {
        this.data = data;
        return this;
    }

    public Result<T> code(int code) {
        this.code = code;
        return this;
    }

    public boolean isSuccess() {
        return success;
    }

    // 省略get,set
}

/**
 * @Description: 响应消息体
 * @Author laoxu
 * @Date 2019/12/21 9:50
 **/
public class ResultBean<T> {
    /**响应编码*/
    private int code;
    /**响应消息*/
    private String msg;
    /**数据总量*/
    private int count;
    /**数据*/
    private T data;

    public ResultBean() {
    }

    public ResultBean(int code, String msg, int count, T data) {
        super();
        this.code = code;
        this.msg = msg;
        this.count = count;
        this.data = data;
    }

    @Override
    public String toString() {
        return "R [code=" + code + ", msg=" + msg + ", count=" + count + ", data=" + data + "]";
    }

     // 省略get,set
}

/**
 * 返回结果工具类
 *
 * @author laoxu
 * @create 2018-10-23
 **/
public class ResultUtil {
    public static boolean isOk(Result<?> result){
        return null != result && result.getCode() == ErrorStatus.OK.getCode();
    }

    public static <T> Result<T> ok(){
        return new Result<T>(ErrorStatus.OK);
    }

    public static <T> Result<T> ok(T data){
        return new Result<T>(ErrorStatus.OK.getCode(), ErrorStatus.OK.getMessage(), data);
    }

    public static <T> Result<T> fail(){
        return new Result<T>(ErrorStatus.BAD_REQUEST).fail();
    }

    public static <T> Result<T> status(ErrorStatus status){
        return new Result<T>(status.getCode(), status.getMessage()).fail();
    }

    public static <T> Result<T> fail(ErrorStatus status){
        return new Result<T>(status.getCode(), status.getMessage()).fail();
    }

    public static <T> Result<T> fail(String message){
        return fail(ErrorStatus.BAD_REQUEST.getCode(), message, (T)null).fail();
    }

    public static <T> Result<T> fail(int code, String message){
        return new Result<T>(code, message).fail();
    }

    public static <T> Result<T> fail(int code ,String message, T data){
        return new Result<T>(code, message, data).fail();
    }

    public static <T> Result<T> notfound(){
        return new Result<T>(ErrorStatus.NOT_FOUND).fail();
    }

}

6.3 错误信息封装

/**
 * 错误代号和信息
 *
 * @author laoxu
 * @create 2018-10-23
 **/
public enum ErrorStatus {
    OK(200, "OK"),
    FOUND(302, "Found"),
    BAD_REQUEST(400, "Bad Request"),
    UNAUTHORIZED(401, "Unauthorized"),
    FORBIDDEN(403, "Forbidden"),
    NOT_FOUND(404, "Not Found"),
    INTERNAL_SERVER_ERROR(500, "Internal Server Error"),
    SERVICE_UNAVAILABLE(503, "Service Unavailable");

    private final int code;

    private final String message;

    ErrorStatus(int code, String message) {
        this.code = code;
        this.message = message;
    }

    public int getCode() {
        return code;
    }

    public String getMessage() {
        return message;
    }
}

6.4 自定义异常

/**
 * @Description: 异常处理器
 * @Author laoxu
 * @Date 2019/7/3 22:14
 **/
@ControllerAdvice
public class ExceptionsHandler {
    @ResponseBody
    @ExceptionHandler(UnAuthorizedException.class)//可以直接写@ExceptionHandler,不指明异常类，会自动映射
    public Result<String> customGenericExceptionHnadler(UnAuthorizedException exception){ //还可以声明接收其他任意参数
        return ResultUtil.fail(Integer.valueOf(exception.getErrorCode()),exception.getErrorMessage());
    }
}

7.静态资源

添加 layui文件