Spring boot学习笔记——狂神说
SpringBoot学习笔记
1.1 简介
Spring Boot 是 Pivotal 团队在 Spring 的基础上提供的一套全新的开源框架，其目的是为了简化 Spring 应用的搭建和开发过程。Spring Boot 去除了大量的 XML 配置文件，简化了复杂的依赖管理。
springboot配置文件名称是固定的：
- application.properties 语法结构：key=value
- application.yaml. 语法结构：key:空格 value
1.2 导入依赖
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
dependency>
1.3 Spring boot核心配置文件（application.properties）
#更改项目的端口号
server.port=8090
改变banner
1.4 Spring boot核心配置文件（application.yaml）
#key:空格value
server:
port: 8091
#对象
student:
name: songyaxuan
age: 18
#行内写法
students: {name: liuyaowen,age: 16}
#数组
pets:
-cat
-dog
pet: [cat,dog]
yaml可以给实体类赋值
原来用@value给实体类赋值：
@Component
public class Dog {
@Value("鼠标")
private String name;
@Value("1")
private Integer age;
}
@SpringBootTest
class SpbootApplicationTests {
@Autowired
private Dog dog;
@Test
void contextLoads() {
System.out.println(dog);
}
}
现在通过yaml赋值：
@Component
@ConfigurationProperties(prefix = "person")
public class Person {
private String name;
private Integer age;
private Boolean happy;
private Date birth;
private Map<String,Object> maps;
private List<Object> lists;
private Dog dog;
}
server:
port: 8091
person:
name: songysxuan
age: 18
happy: true
birth: 2004/03/04
maps: {k1: v2,k2: v2}
lists:
-music
-liu
dog:
name: shubiao
age: 1
@SpringBootTest
class SpbootApplicationTests {
@Autowired
private Person person;
@Test
void contextLoads() {
System.out.println(person);
}
}
绑定指定配置文件并给实体类属性赋值：
tnt.properties:
name=shidaishaoniantuan
age=2
Person.java:
@Component
@PropertySource(value = "classpath:tnt.properties")
public class Person {
//yaml支持el表达式
@Value("${name}")
private String name;
@Value("${age}")
private Integer age;
}
测试类：
@SpringBootTest
class SpbootApplicationTests {
@Autowired
//private Dog dog;
private Person person;
@Test
void contextLoads() {
System.out.println(person.getName());
System.out.println(person.getAge());
}
}
1.5 Springboot Web开发
需要解决的问题：
- 导入静态资源
- 首页定制
- jap–模版引擎thymeleaf
- 装配扩展springMVC
- 增删改查
- 拦截器
1.5.1 静态资源
导入依赖：
<dependency>
<groupId>org.webjarsgroupId>
<artifactId>jqueryartifactId>
<version>3.4.1version>
dependency>
访问静态资源：
http://localhost:8080/webjars/jquery/3.4.1/jquery.js
或者创建目录(优先级：resource>statis>public）
1.5.2 首页定制
在templates目录下的所有页面，只能通过controller来跳转！
@RestController
public class IndexController {
@RequestMapping("/index")
public String index(){
return "index";
}
}
1.5.3 模版引擎thymeleaf
导入依赖：
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-thymeleafartifactId>
dependency>
导入依赖以后只需要将html放入templates中，就可以通过controller访问来。
html文件中引入：
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Titletitle>
head>
<body>
<div th:text="${msg}">div>
body>
html>
1.5.4 装配扩展MVC
先创建一个包config，在里面写一个类
//扩展mvc，implements WebMvcConfigurer并且不可以加注解@EnableWebMvc
@Configuration
public class MyMvcConfig implements WebMvcConfigurer {
//视图跳转
@Override
public void addViewControllers(ViewControllerRegistry registry) {
//请求/candy时页面跳转到hello页面
registry.addViewController("/candy").setViewName("hello");
}
}
1.6 项目实战
1.6.1 准备工作
引入Lombok：
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
dependency>
@Data:使用这个注解可以省去实体类中大量的get()、 set()、 toString()等方法。
@AllArgsConstructor:有参构造
@NoArgsConstructor:无参构造
注意：以上注解都是在Lombok中的！！！
package com.candy.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
//有参构造
@AllArgsConstructor
//无参构造
@NoArgsConstructor
public class Department {
private Integer id;
private String departmentName;
}
导入模板：
编写实体类和dao层：
Employee.java:
package com.candy.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.Date;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Employee {
private Integer id;
private String lastName;
private String email;
private Integer gender;//0女1男
private Department department;
private Date birth;
}
DepartmentDao.java:
package com.candy.dao;
import com.candy.pojo.Department;
import org.springframework.stereotype.Repository;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
@Repository
public class DepartmentDao {
private static Map<Integer, Department> departments = null;
static {
departments = new HashMap<Integer, Department>();//创建一个部门表
departments.put(101,new Department(101,"教学部"));
departments.put(102,new Department(102,"市场部"));
departments.put(103,new Department(103,"教研部"));
departments.put(104,new Department(104,"运营部"));
departments.put(105,new Department(105,"财务部"));
}
//获得所有部门信息
public Collection<Department> getDepartments(){
return departments.values();
}
//通过id得到部门
public Department getDepartmenrById(Integer id){
return departments.get(id);
}
}
EmployeeDao.java:
package com.candy.dao;
import com.candy.pojo.Department;
import com.candy.pojo.Employee;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
@Repository
public class EmployeeDao {
private static Map<Integer,Employee> employees = null;
@Autowired
private DepartmentDao departmentDao;
static {
employees = new HashMap<Integer,Employee>();//创建一个员工表
employees.put(1001,new Employee(1001,"马嘉祺","[email protected]",1,new Department(101,"教学部"),new Date()));
employees.put(1002,new Employee(1002,"丁程鑫","[email protected]",1,new Department(101,"教学部"),new Date()));
employees.put(1003,new Employee(1003,"宋亚轩","[email protected]",1,new Department(102,"市场部"),new Date()));
employees.put(1004,new Employee(1004,"刘耀文","[email protected]",1,new Department(102,"市场部"),new Date()));
employees.put(1005,new Employee(1005,"张真源","[email protected]",1,new Department(103,"教研部"),new Date()));
employees.put(1006,new Employee(1006,"严浩翔","[email protected]",1,new Department(104,"运营部"),new Date()));
employees.put(1007,new Employee(1007,"贺峻霖","[email protected]",1,new Department(104,"运营部"),new Date()));
}
//主键自增
private static Integer initId = 1008;
//增加一个员工
public void add(Employee employee){
if (employee.getId()==null){
employee.setId(initId++);
} employee.setDepartment(departmentDao.getDepartmenrById(employee.getDepartment().getId()));
employees.put(employee.getId(),employee);
}
//查询所有员工
public Collection<Employee> getAll(){
return employees.values();
}
//根据ID查询员工
public Employee getEmploeeById(Integer id){
return employees.get(id);
}
//删除员工
public void del(Integer id){
employees.remove(id);
}
}
1.6.2 首页实现
先配置路径，可以访问index（在config的MyMvcConfig.java）：
@Configuration
public class MyMvcConfig implements WebMvcConfigurer {
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("index");
registry.addViewController("index.html").setViewName("index");
}
}
导入thymeleaf在模板中，并按照规则修改标签中的属性
#关闭thymeLeaf缓存
spring.thymeleaf.cache=false
DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
<meta name="author" content="">
<title>Signin Template for Bootstraptitle>
<link th:href="@{/css/bootstrap.min.css}" rel="stylesheet">
<link th:href="@{/css/signin.css}" rel="stylesheet">
head>
1.6.3 页面国际化
实现页面中文和英文语言切换！！！
先在resource目录下创建一个包：
然后在application.properties中写好配置文件的路径：
#配置文件的位置
spring.messages.basename=i18n.login
在前端页面中使用语法取值：
<form class="form-signin" action="dashboard.html">
<img class="mb-4" th:src="@{/img/bootstrap-solid.svg}" alt="" width="72" height="72">
<h1 class="h3 mb-3 font-weight-normal" th:text="#{login.tip}">Please loginh1>
<label class="sr-only" >Usernamelabel>
<input type="text" class="form-control" th:placeholder="#{login.username}" required="" autofocus="">
<label class="sr-only">Passwordlabel>
<input type="password" class="form-control" th:placeholder="#{login.password}" required="">
<div class="checkbox mb-3">
<label >
<input type="checkbox" value="remember-me" th:text="#{login.remember}">
label>
div>
<button class="btn btn-lg btn-primary btn-block" type="submit" th:text="#{login.btn}">Loginbutton>
<p class="mt-5 mb-3 text-muted">© 2022-2023p>
<a class="btn btn-sm" th:href="@{/index.html(l='zh_CN')}">中文a>
<a class="btn btn-sm" th:href="@{/index.html(l='en_US')}">Englisha>
form>
为了实现中文和English的按钮，我们自己需要自定义国际化,自己写一个类:
package com.candy.comfig;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.LocaleResolver;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Locale;
public class MyLocalResolver implements LocaleResolver {
//解析请求
@Override
public Locale resolveLocale(HttpServletRequest request) {
String language = request.getParameter("l");
Locale locale = Locale.getDefault();//如果没有就使用默认的
//如果请求链接携带了国际化的参数
if (!StringUtils.isEmpty(language)){
String[] split = language.split("_");
locale = new Locale(split[0],split[1]);
}
return locale;
}
@Override
public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {
}
}
然后在mymvcconfig中注册：
//自定义国际化
@Bean
public LocaleResolver localeResolver(){
return new MyLocalResolver();
}
注意：需要先在idea设置的file encoding中将编码语言全部设置为utf-8，否则可能会乱码。
1.6.4 登陆功能实现
在前端页面中设置按钮请求：
<form class="form-signin" th:action="@{/user/login}">
然后写一个controller类管理登陆业务：
package com.candy.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
@Controller
public class LoginController {
@RequestMapping("/user/login")
public String login(
@RequestParam("username") String username,
@RequestParam("password") String password,
Model model
){
if(!StringUtils.isEmpty(username)&&"123".equals(password)){
//登陆成功之后重定向页面
return "redirect:/main.html";
}else {
model.addAttribute("msg","用户名或者密码错误");
return "index";
}
}
}
重定向页面需要在MyMvcConfig.java中配置：
registry.addViewController("main.html").setViewName("dashboard");
1.6.5 登陆拦截器
需要自己写一个拦截类：
package com.candy.comfig;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginHandlerInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//登陆成功之后应该有用户的session
Object loginUser = request.getSession().getAttribute("loginUser");
if (loginUser==null){//没有登陆
request.setAttribute("msg","没有权限，请先登陆");
request.getRequestDispatcher("/index.html").forward(request,response);
return false;
}else {
return true;
}
}
}
在loginController.java中添加session(并将用户名放入session中保存)：
最后在MyMvcConfig.java中注册配置类：
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LoginHandlerInterceptor())
.addPathPatterns("/**").excludePathPatterns("/index.html","/","/user/login","/css/**","/img/**","/img/**");
}
解释：在所有路径下应用，除了/index.html、/、/user/login、所有静态资源
在前端页面中取出用户名：
[[${session.loginUser}]]
直接访问main.html会被拦截器阻拦：
正常登陆后，会显示用户名：
1.6.6 展示员工页面
抽取公布组件：
新建文件commons，创建commons.html存放公共的导航栏：
首页在commons.html中引入
<html lang="en" xmlns:th="http://www.thymeleaf.org">
将原来dashboard和list中公共的头部导航和侧边导航栏:
<nav class="navbar navbar-dark sticky-top bg-dark flex-md-nowrap p-0" th:fragment="topbar">
<a class="navbar-brand col-sm-3 col-md-2 mr-0" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">[[${session.loginUser}]]a>
<input class="form-control form-control-dark w-100" type="text" placeholder="Search" aria-label="Search">
<ul class="navbar-nav px-3">
<li class="nav-item text-nowrap">
<a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">注销a>
li>
ul>
nav>
<nav class="col-md-2 d-none d-md-block bg-light sidebar" th:fragment="sidebar">
<div class="sidebar-sticky">
<ul class="nav flex-column">
<li class="nav-item">
<a th:class="${active=='main.html'?'nav-link active':'nav-link'}" th:href="@{/main.html}">
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-home">
<path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z">path>
<polyline points="9 22 9 12 15 12 15 22">polyline>
svg>
首页 <span class="sr-only">(current)span>
a>
li>
<li class="nav-item">
<a th:class="${active=='list.html'?'nav-link active':'nav-link'}" th:href="@{/emps}">
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-users">
<path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2">path>
<circle cx="9" cy="7" r="4">circle>
<path d="M23 21v-2a4 4 0 0 0-3-3.87">path>
<path d="M16 3.13a4 4 0 0 1 0 7.75">path>
svg>
员工管理
a>
li>
<li class="nav-item">
<a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-bar-chart-2">
<line x1="18" y1="20" x2="18" y2="10">line>
<line x1="12" y1="20" x2="12" y2="4">line>
<line x1="6" y1="20" x2="6" y2="14">line>
svg>
部门管理
a>
li>
ul>
div>
nav>
dashboard和list中引入：
展示员工信息（循环取值）：
<table class="table table-striped table-sm">
<thead>
<tr>
<th>idth>
<th>lastNameth>
<th>emailth>
<th>genderth>
<th>departmentth>
<th>birthth>
<th>操作th>
tr>
thead>
<tbody>
<tr th:each="emp:${emps}">
<td th:text="${emp.getId()}">td>
<td th:text="${emp.getLastName()}">td>
<td th:text="${emp.getEmail()}">td>
<td th:text="${emp.getGender()==0?'女':'男'}">td>
<td th:text="${emp.department.getDepartmentName()}">td>
<td th:text="${#dates.format(emp.getBirth(),'yyyy-MM-dd HH:mm:ss')}"> td>
<td>
<button class="btn btn-sm btn-primary">editbutton>
<button class="btn btn-sm btn-danger">delbutton>
td>
tr>
tbody>
table>
1.6.7 添加、修改、删除员工以及404处理和注销
- 添加员工
先把add.html写出来（用list.html改写）
<div class="container-fluid">
<div class="row">
<div th:insert="~{commons/commons::sidebar(active='list.html')}">div>
<main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">
<form th:action="@{/emp}" method="post">
<div class="form-group">
<label>lastNamelabel>
<input type="text" name="lastName" class="form-control" placeholder="weishenme">
div>
<div class="form-group">
<label>Emaillabel>
<input type="email" name="email" class="form-control" placeholder="[email protected]">
div>
<div class="form-group">
<label>Genderlabel>
<div class="form-check form-check-inline" >
<input class="form-check-input" type="radio" name="gender" value="1">
<label class="form-check-label">男label>
div>
<div class="form-check form-check-inline" >
<input class="form-check-input" type="radio" name="gender" value="0">
<label class="form-check-label">女label>
div>
div>
<div class="form-group">
<label>departmentlabel>
<select class="form-control" name="department.id" >
<option th:each="dept:${dep}" th:text="${dept.getDepartmentName()}" th:value="${dept.getId()}">option>
select>
div>
<div class="form-group">
<label >Birthlabel>
<input type="text" class="form-control" name="birth" placeholder="tnt">
div>
<button type="submit" class="btn btn-primary">addbutton>
form>
main>
div>
div>
然后去写controller中添加员工的方法：
@GetMapping("/emp")
public String toAddpage(Model model){
//查出部门所有的信息
Collection<Department> departments = departmentDao.getDepartments();
model.addAttribute("dep",departments);
return "emp/add";
}
@PostMapping("/emp")
public String addEmp(Employee employee){
//添加的操作 formward
System.out.println(employee);
employeeDao.add(employee);//保存员工信息
return "redirect:/emp";
}
注意：
#时间日期格式化
spring.mvc.format.date=yyyy-MM-dd
- 修改员工
添加一个update.html页面（由add.html页面copy）
<main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">
<form th:action="@{/updateEmp}" method="post">
<input type="hidden" name="id" th:value="${emp.getId()}">
<div class="form-group">
<label>lastNamelabel>
<input type="text" th:value="${emp.getLastName()}" name="lastName" class="form-control" placeholder="weishenme">
div>
<div class="form-group">
<label>Emaillabel>
<input type="email" th:value="${emp.getEmail()}" name="email" class="form-control" placeholder="[email protected]">
div>
<div class="form-group">
<label>Genderlabel>
<div class="form-check form-check-inline" >
<input th:checked="${emp.getGender()==1}" class="form-check-input" type="radio" name="gender" value="1">
<label class="form-check-label">男label>
div>
<div class="form-check form-check-inline" >
<input th:checked="${emp.getGender()==0}" class="form-check-input" type="radio" name="gender" value="0">
<label class="form-check-label">女label>
div>
div>
<div class="form-group">
<label>departmentlabel>
<select class="form-control" name="department.id" >
<option th:selected="${dept.getId()==emp.getDepartment().getId()}" th:each="dept:${departments}" th:text="${dept.getDepartmentName()}" th:value="${dept.getId()}">option>
select>
div>
<div class="form-group">
<label >Birthlabel>
<input th:value="${#dates.format(emp.getBirth(),'yyyy-MM-dd')}" type="text" class="form-control" name="birth" placeholder="tnt">
div>
<button type="submit" class="btn btn-primary">donebutton>
form>
main>
在controller层加入修改的方法：
@GetMapping("emp/{id}")
public String toUpdateEmp(@PathVariable("id")Integer id,Model model){
Employee employee = employeeDao.getEmploeeById(id);
model.addAttribute("emp",employee);
Collection<Department> departments = departmentDao.getDepartments();
model.addAttribute("departments",departments);
return "emp/update";
}
@PostMapping("updateEmp")
public String updateEmp(Employee employee){
employeeDao.add(employee);
return "redirect:/emps";
}
- 删除员工
<a class="btn btn-sm btn-danger" th:href="@{delemp/{empId}(empId=${emp.id})}">dela>
@GetMapping("delemp/{id}")
public String delEmp(@PathVariable("id")Integer id){
employeeDao.del(id);
return "redirect:/emps";
}
- 404处理
在template文件中创建一个error文件里面放入一些处理错误的页面，idea会自动配置路径：
- 注销
<li class="nav-item text-nowrap">
<a class="nav-link" th:href="@{/user/logout}">注销a>
li>
@RequestMapping("/user/logout")
public String logout(HttpSession session){
session.invalidate();
return "redirect:/index.html";
}
1.7 Spring Data
1.7.1 整合JDBC使用
添加依赖：
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-jdbcartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<scope>runtimescope>
dependency>
编写application.yaml：
spring:
datasource:
username: root
password: root12345
url: jdbc:mysql://localhost:3306/mybts?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
driver-class-name: com.mysql.cj.jdbc.Driver
测试：
@SpringBootTest
class SpdataApplicationTests {
@Autowired
DataSource dataSource;
@Test
void contextLoads() {
//查看默认数据源
System.out.println(dataSource.getClass());
//获得数据库连接
Connection connection = dataSource.getConnection();
System.out.println(connection);
//关闭连接
connection.close();
}
}
查询数据库内容：
@RestController
public class JDBCController {
@Autowired
JdbcTemplate jdbcTemplate;
//查询数据库的所有信息
@GetMapping("/userList")
public List<Map<String,Object>> userList(){
String sql = "select * from mybts.user";
List<Map<String,Object>> maps = jdbcTemplate.queryForList(sql);
return maps;
}
}
1.7.2 整合Druid数据源
导入druid依赖：
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.2.7version>
dependency>
在配置文件中选择数据库的数据源类型：
spring:
datasource:
username: root
password: root12345
url: jdbc:mysql://localhost:3306/mybts?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
driver-class-name: com.mysql.cj.jdbc.Driver
type: com.alibaba.druid.pool.DruidDataSource
druid常用配置：
druid:
# 配置初始化大小、最小、最大线程数
initialSize: 5
minIdle: 5
# CPU核数+1，也可以大些但不要超过20，数据库加锁时连接过多性能下降
maxActive: 20
# 最大等待时间，内网：800，外网：1200（三次握手1s）
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
# 配置一个连接在池中最大空间时间，单位是毫秒
minEvictableIdleTimeMillis: 300000
validationQuery: SELECT 1
testWhileIdle: true
# 设置从连接池获取连接时是否检查连接有效性，true检查，false不检查
testOnBorrow: false
# 设置从连接池归还连接时是否检查连接有效性，true检查，false不检查
testOnReturn: false
# 可以支持PSCache（提升写入、查询效率）
poolPreparedStatements: true
# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
filters: stat,wall,log4j
# 保持长连接
keepAlive: true
maxPoolPreparedStatementPerConnectionSize: 20
useGlobalDataSourceStat: true
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
写一个druidconfig：
@Configuration
public class DruidConfig {
@ConfigurationProperties(prefix = "spring.datasource")
@Bean
public DataSource druidDataSource(){
return new DruidDataSource();
}
//后台监控
@Bean
public ServletRegistrationBean statViewServlet(){
ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(),"/druid/*");
//后台账号密码配置
HashMap<String,String> initParameters = new HashMap<>();
//增加配置
initParameters.put("loginUsername","admin");//key是固定的
initParameters.put("loginPassword","123456");
//允许谁访问 空：所有人都可以
initParameters.put("allow","");
//禁止谁访问 谁，域名
//initParameters.put("candy","192.168.11.123");
bean.setInitParameters(initParameters);//设置初始化参数
return bean;
}
}
web的过滤器：
//WebStatFilter:用于配置Web和Druid数据源之间的管理关联监控统计 @Bean
public FilterRegistrationBean webStatFilter() {
FilterRegistrationBean bean = new FilterRegistrationBean();
bean.setFilter(new WebStatFilter());
//exclusions:设置哪些请求进行过滤排除掉，从而不进行统计
Map<String, String> initParams = new HashMap<>(); initParams.put("exclusions", "*.js,*.css,/druid/*,/jdbc/*"); bean.setInitParameters(initParams);
//"/*" 表示过滤所有请求
bean.setUrlPatterns(Arrays.asList("/*"));
return bean;
}
1.7.3 整合mybatis
导入依赖：
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>2.2.1version>
dependency>
连接数据库，创建实体类（引入Lombok）:
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
private int id;
private String name;
private String password;
}
写mapper.java：
@Mapper
@Repository
public interface UserMapper {
List<User> queryUserList();
User queryById(int id);
int addUser(User user);
int updateUser(User user);
int delUser(User user);
}
创建UserMapper.xml:
DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.candy.mapper.UserMapper">
<select id="queryUserList" resultType="com.candy.pojo.User">
select * from user
select>
<select id="queryById" parameterType="int" resultType="com.candy.pojo.User" >
select * from user where id =#{id}
select>
<insert id="addUser" parameterType="com.candy.pojo.User">
insert into user(id,name,password) values (#{id},#{name},#{password})
insert>
<update id="updateUser" parameterType="com.candy.pojo.User">
update user set name = #{name},password = #{password}
update>
<delete id="delUser" parameterType="int">
delete from user where id =#{id}
delete>
mapper>
在application.yaml中写别名：
mybatis:
type-aliases-package: com.candy.pojo
mapper-locations:
- classpath:mybatis/mapper/*.xml
编写controller测试：
@RestController
public class UserController {
@Autowired
private UserMapper userMapper;
@GetMapping("/queryUserList")
public List<User> queryUserList(){
List<User> userList = userMapper.queryUserList();
return userList;
}
}
1.8 Spring Security
Spring Security is a powerful and highly customizable authentication and access-control framework.
记住以下类：
- WebSecurityConfigurerAdapter 自定义security策略
- AuthenticationManagerBuilder 自定义认证策略
- @EnableWebSecurity: 开启WebSecurity模式 @Enablexxxx开启某个功能
1.8.1 Spring Security环境搭建
导入依赖：
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-securityartifactId>
dependency>
导入静态资源：
https://gitee.com/plushuang/plushuang-springsecurity-project/tree/master/src/main
放入项目中：
关闭模版引擎缓存：
spring.thymeleaf.cache=false
编写controller：
package com.candy.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class RouterController {
@RequestMapping({"/","index"})
public String index(){
return "index";
}
@RequestMapping("/toLogin")
public String toLogin(){
return "/views/login";
}
@RequestMapping("/level1/{id}")
public String level1(@PathVariable("id")int id){
return "/views/level1/"+id;
}
@RequestMapping("/level2/{id}")
public String level2(@PathVariable("id")int id){
return "/views/level2/"+id;
}
@RequestMapping("/level3/{id}")
public String level3(@PathVariable("id")int id){
return "/views/level3/"+id;
}
}
进入index:
1.8.2 用户认证与授权
创建config：
package com.candy.config;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
//链式编程
//授权
@Override
protected void configure(HttpSecurity http) throws Exception{
//首页所有人可以访问，但是功能页只有有权限的人才能访问
http.authorizeRequests()
.antMatchers("/").permitAll()
.antMatchers("/level1/**").hasRole("vip1")
.antMatchers("/level2/**").hasRole("vip2")
.antMatchers("/level3/**").hasRole("vip3");
//没有权限会跳转到登陆页面
http.formLogin().loginPage("/toLogin");
//关闭csrf 防护
http.csrf().disable();
}
}
在次点击level页面后会跳转到登陆页面：
添加认证(重写configure(AuthenticationManagerBuilder auth) 方法)：
//认证
//密码编码 passwordEncoder
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())
.withUser("123").password(new BCryptPasswordEncoder().encode("123")).roles("vip1","vip2")
.and()
.withUser("dingchengxin").password(new BCryptPasswordEncoder().encode("123")).roles("vip3")
.and()
.withUser("tnt").password(new BCryptPasswordEncoder().encode("123")).roles("vip1");
}
测试，登陆tnt账户：
只能访问level1的内容，没有权限访问level2和level3的内容！
连接数据库的改写方法
import javax.sql.DataSource;
@Autowired
private DataSource dataSource;
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.jdbcAuthentication()
.dataSource(dataSource)
.usersByUsernameQuery("select username,password,enabled from users WHERE username=?")
.authoritiesByUsernameQuery("select username,authority from authorities where username=?")
.passwordEncoder(new BCryptPasswordEncoder());
}
1.8.3 注销及权限控制
- 注销
//注销
http.logout();
<div sec:authorize="isAuthenticated()">
<a class="item" th:href="@{/logout}">
<i class="address card icon">i> 注销
a>
div>
点击注销后跳转到登陆页面：
导入thymeleaf和springsecurity整合包：
<dependency>
<groupId>org.thymeleaf.extrasgroupId>
<artifactId>thymeleaf-extras-springsecurity5artifactId>
<version>3.0.4.RELEASEversion>
dependency>
改造index:
springsecurity命名空间：
<html lang="en" xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity5"
>
<body>
<div class="ui container">
<div class="ui segment" id="index-header-nav" th:fragment="nav-menu">
<div class="ui secondary menu">
<a class="item" th:href="@{/index}">首页a>
<div class="right menu">
<div sec:authorize="!isAuthenticated()">
<a class="item" th:href="@{/toLogin}">
<i class="address card icon">i> 登录
a>
div>
<div sec:authorize="isAuthenticated()">
<a class="item">
<i class="address card icon">i>
用户名：<span sec:authentication="principal.username">span>
角色：<span sec:authentication="principal.authorities">span>
a>
div>
<div sec:authorize="isAuthenticated()">
<a class="item" th:href="@{/logout}">
<i class="address card icon">i> 注销
a>
div>
div>
div>
div>
<div class="ui segment" style="text-align: center">
<h3>Spring Securityh3>
div>
<div>
<br>
<div class="ui three column stackable grid">
<div class="column" sec:authorize="hasRole('vip1')">
<div class="ui raised segment">
<div class="ui">
<div class="content">
<h5 class="content">Level 1h5>
<hr>
<div><a th:href="@{/level1/1}"><i class="bullhorn icon">i> Level-1-1a>div>
<div><a th:href="@{/level1/2}"><i class="bullhorn icon">i> Level-1-2a>div>
<div><a th:href="@{/level1/3}"><i class="bullhorn icon">i> Level-1-3a>div>
div>
div>
div>
div>
<div class="column" sec:authorize="hasRole('vip2')">
<div class="ui raised segment">
<div class="ui">
<div class="content">
<h5 class="content">Level 2h5>
<hr>
<div><a th:href="@{/level2/1}"><i class="bullhorn icon">i> Level-2-1a>div>
<div><a th:href="@{/level2/2}"><i class="bullhorn icon">i> Level-2-2a>div>
<div><a th:href="@{/level2/3}"><i class="bullhorn icon">i> Level-2-3a>div>
div>
div>
div>
div>
<div class="column" sec:authorize="hasRole('vip3')">
<div class="ui raised segment">
<div class="ui">
<div class="content">
<h5 class="content">Level 3h5>
<hr>
<div><a th:href="@{/level3/1}"><i class="bullhorn icon">i> Level-3-1a>div>
<div><a th:href="@{/level3/2}"><i class="bullhorn icon">i> Level-3-2a>div>
<div><a th:href="@{/level3/3}"><i class="bullhorn icon">i> Level-3-3a>div>
div>
div>
div>
div>
div>
div>
div>
<script th:src="@{/qinjiang/js/jquery-3.1.1.min.js}">script>
<script th:src="@{/qinjiang/js/semantic.min.js}">script>
body>
html>
测试，登陆123,实现动态菜单：
1.8.4 记住我及首页定制
- 记住我
//开启记住我功能 与下面的name属性匹配
http.rememberMe().rememberMeParameter("remember");
<div class="field">
<input type="checkbox" name="remember"> 记住我
div>
测试：
关闭浏览器后，依然可以跳转到上面的画面！记住我成功！
- 首页定制
1.9 Shiro
Apache Shiro 是 Java 的一个安全框架。
回顾核心API:
- Subject:用户主体
- SecurityManager:安全管理器
- Realm:Shiro 连接数据
1.9.1 Shiro快速开始
导入依赖：
<dependencies>
<dependency>
<groupId>org.apache.shirogroupId>
<artifactId>shiro-coreartifactId>
<version>1.4.1version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-simpleartifactId>
<version>1.7.21version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-apiartifactId>
<version>1.7.21version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-simpleartifactId>
<version>1.7.21version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>jcl-over-slf4jartifactId>
<version>1.7.21version>
<scope>testscope>
dependency>
dependencies>
导入log4j：
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>1.2.17version>
dependency>
编写log4j.properties:
log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m %n
# General Apache libraries
log4j.logger.org.apache=WARN
# Spring
log4j.logger.org.springframework=WARN
# Default Shiro logging
log4j.logger.org.apache.shiro=INFO
# Disable verbose logging
log4j.logger.org.apache.shiro.util.ThreadContext=WARN
log4j.logger.org.apache.shiro.cache.ehcache.EhCache=WARN
创建shiro.ini:
[users]
#user'root'withpassword'secret'andthe'admin'role
root=secret,admin
#user'guest'withthepassword'guest'andthe'guest'role
guest=guest,guest
#user'presidentskroob'withpassword'12345'("That'sthesame combination on
#myluggage!!!";)),androle'president'
presidentskroob=12345,president
#user'darkhelmet'withpassword'ludicrousspeed'androles'darklord'and 'schwartz'
darkhelmet=ludicrousspeed,darklord,schwartz
#user'lonestarr'withpassword'vespa'androles'goodguy'and'schwartz'
lonestarr=vespa,goodguy,schwartz
[roles]
#'admin'rolehasallpermissions,indicatedbythewildcard'*'
admin=*
#The'schwartz'rolecandoanything(*)withanylightsaber:
schwartz=lightsaber:*
#The'goodguy'roleisallowedto'drive'(action)thewinnebago(type) with
#licenseplate'eagle5'(instancespecificid)
goodguy=winnebago:drive:eagle5
测试QuickStrat.java:
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.Factory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class QuickStrat {
private static final transient Logger log = LoggerFactory.getLogger(QuickStrat.class);
public static void main(String[] args) {
Factory<SecurityManager> factory = new
IniSecurityManagerFactory("classpath:shiro.ini");
SecurityManager securityManager = factory.getInstance();
SecurityUtils.setSecurityManager(securityManager);
//获取当前的用户的对象
Subject currentUser = SecurityUtils.getSubject();
//通过当前用户获取session
Session session = currentUser.getSession();
session.setAttribute("someKey", "aValue");
String value = (String) session.getAttribute("someKey");
if (value.equals("aValue")) {
log.info("Retrieved the correct value! [" + value + "]");
}
//判断当前用户是否被认证
if (!currentUser.isAuthenticated()) {
//令牌
UsernamePasswordToken token = new
UsernamePasswordToken("lonestarr", "vespa");
token.setRememberMe(true);//设置记住我
try {
currentUser.login(token);//执行登陆操作
} catch (UnknownAccountException uae) { //用户名不存在
log.info("There is no user with username of " +
token.getPrincipal());
} catch (IncorrectCredentialsException ice) {//密码错误
log.info("Password for account " +
token.getPrincipal() + " was incorrect!");
} catch (LockedAccountException lae) { //账号被锁定
log.info("The account for username " + token.getPrincipal() + " is locked. " + "Please contact your administrator to unlock it.");
} catch (AuthenticationException ae) {//认证异常
//unexpected condition? error?
} }
log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");
//测试角色
if (currentUser.hasRole("schwartz")) {
log.info("May the Schwartz be with you!");
} else {
log.info("Hello, mere mortal.");
}
//粗粒度
if (currentUser.isPermitted("lightsaber:wield")) {
log.info("You may use a lightsaber ring. Use it wisely.");
} else {
log.info("Sorry, lightsaber rings are for schwartz masters only.");
}
//细粒度
if (currentUser.isPermitted("winnebago:drive:eagle5")) {
log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'. " +
"Here are the keys - have fun!");
} else {
log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");
}
//注销
currentUser.logout();
//结束
System.exit(0);
}
}
1.9.2 Spring boot集成Shiro
创建一个Spring boot项目
导入Spring boot web和thymeleaf
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-thymeleafartifactId>
dependency>
写一个静态页面：
写controller：
@Controller
public class MyController {
@RequestMapping({"/","/index"})
public String toIndex(Model model){
model.addAttribute("msg","hello,honey");
return "index";
}
}
导入shiro整合依赖：
<dependency>
<groupId>org.apache.shirogroupId>
<artifactId>shiro-springartifactId>
<version>1.4.1version>
dependency>
编写config:
package com.candy.config;
import org.springframework.context.annotation.Configuration;
@Configuration
public class ShiroConfig {
//第三步：创建 ShiroFilterFactoryBean
//第二步：创建 DefaultWebSecurityManager
//第一步：创建 realm 对象 自定义
}
- 第一步：创建 realm 对象 自定义
package com.candy.config;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
//自定义 继承AuthorizingRealm
public class UserRealm extends AuthorizingRealm {
//授权
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
System.out.println("授权了");
return null;
}
//认证
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
System.out.println("认证了");
return null;
}
}
在config中使用：
@Bean
public UserRealm userRealm(){
return new UserRealm();
}
- 第二步：创建 DefaultWebSecurityManager(死代码)
@Bean
public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
//关联UserRealm
securityManager.setRealm(userRealm);
return securityManager;
}
- 第三步：创建 ShiroFilterFactoryBean
@Bean
public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("getDefaultWebSecurityManager") DefaultWebSecurityManager defaultWebSecurityManager){
ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
//设置安全管理器
bean.setSecurityManager(defaultWebSecurityManager);
return bean;
}
测试：
创建两个静态页面：
在controller中添加方法访问：
@RequestMapping("/user/add")
public String add(){
return "/user/add";
}
@RequestMapping("/user/uodate")
public String update(){
return "/user/update";
}
在index.html中添加链接：
<a th:href="@{/user/add.html}">adda>
<a th:href="@{/user/update.html}">updatea>
1.9.3 实现登陆拦截
在shiroFilter方法中添加属性：
//创建 ShiroFilterFactoryBean
@Bean
public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("getDefaultWebSecurityManager") DefaultWebSecurityManager defaultWebSecurityManager){
ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
//设置安全管理器
bean.setSecurityManager(defaultWebSecurityManager);
//添加shiro的内置过滤器
/*
anon:无需认证就可以访问
authc:必须认证了才能访问
user:必须拥有"记住我"功能才能用
perms:拥有对某个资源的权限才能访问
role:拥有某个角色权限才能访问
*/
Map<String,String> filterMap = new LinkedHashMap<String,String>();
filterMap.put("/user/add","authc");
filterMap.put("/user/update","authc");
bean.setFilterChainDefinitionMap(filterMap);
return bean;
}
访问/user/add被拦截：
实现拦截后跳转到登陆页面：
创建login.html:
<body>
<h1>loginh1>
<form action="">
<p>username:<input type="text" name="username">p>
<p>password:<input type="text" name="password">p>
<p>LOGIN<input type="submit">p>
form>
body>
在controller层写跳转方法：
@RequestMapping("toLogin")
public String toLogin(){
return "login";
}
最后在拦截之后设置登陆请求：
1.9.4 实现用户认证
用户认证放在Realm中
先去controller中添加处理登陆过程：
@RequestMapping("/login")
public String login(String username,String password,Model model){
//获取当前用户
Subject subject = SecurityUtils.getSubject();
//封装用户的登陆数据
UsernamePasswordToken token = new UsernamePasswordToken(username,password);
try{
subject.login(token);//执行登陆的方法
return "index";
}catch (UnknownAccountException e){//用户名不存在
model.addAttribute("msg","用户名不存在");
return "login";
}catch (IncorrectCredentialsException e){//密码不存在
model.addAttribute("msg","密码错误");
return "login";
}
}
然后去静态页面绑定数据：
最后去Realm中模拟数据并添加认证：
//认证
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
System.out.println("认证了");
//用户名、密码
String name = "root";
String password = "123";
UsernamePasswordToken userToken = (UsernamePasswordToken)token;
if (!userToken.getUsername().equals(name)){
return null;//抛出异常 UnknownAccountException
}
//密码认证 shiro做
return new SimpleAuthenticationInfo("",password,"");
}
测试：
1.9.5 整合mybatis
导入依赖：
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>2.1.1version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<scope>runtimescope>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>1.2.17version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.2.7version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>1.16.10version>
dependency>
新建一个application.yaml:
spring:
datasource:
username: root
password: root12345
url: jdbc:mysql://localhost:3306/mybts?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
driver-class-name: com.mysql.cj.jdbc.Driver
type: com.alibaba.druid.pool.DruidDataSource
druid:
# 配置初始化大小、最小、最大线程数
initialSize: 5
minIdle: 5
# CPU核数+1，也可以大些但不要超过20，数据库加锁时连接过多性能下降
maxActive: 20
# 最大等待时间，内网：800，外网：1200（三次握手1s）
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
# 配置一个连接在池中最大空间时间，单位是毫秒
minEvictableIdleTimeMillis: 300000
validationQuery: SELECT 1
testWhileIdle: true
# 设置从连接池获取连接时是否检查连接有效性，true检查，false不检查
testOnBorrow: false
# 设置从连接池归还连接时是否检查连接有效性，true检查，false不检查
testOnReturn: false
# 可以支持PSCache（提升写入、查询效率）
poolPreparedStatements: true
# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
filters: stat,wall,log4j
# 保持长连接
keepAlive: true
maxPoolPreparedStatementPerConnectionSize: 20
useGlobalDataSourceStat: true
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
mybatis:
type-aliases-package: com.candy.pojo
mapper-locations:
- classpath:mapper/*.xml
编写实体类：
package com.candy.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
private int id;
private String name;
private String pwd;
}
编写mapper文件：
@Repository
@Mapper
public interface UserMapper {
public User queryUserByName(String name);
}
编写mapper配置文件：
DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.candy.mapper.UserMapper">
<select id="queryUserByName" parameterType="String"
resultType="com.candy.pojo.User">
select * from user where name = #{name}
select>
mapper>
编写service层：
public interface UserService {
public User queryUserByName(String name);
}
@Service
public class UserServiceImpl implements UserService{
@Autowired
UserMapper userMapper;
@Override
public User queryUserByName(String name) {
return userMapper.queryUserByName(name);
}
}
测试：
@SpringBootTest
class SpbShiroApplicationTests {
@Autowired
UserServiceImpl userService;
@Test
void contextLoads() {
User user = userService.queryUserByName("时代少年团");
System.out.println(user);
}
}
改造Realm：
//自定义 继承AuthorizingRealm
public class UserRealm extends AuthorizingRealm {
@Autowired
UserService userService;
//授权
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
System.out.println("授权了");
return null;
}
//认证
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
System.out.println("认证了");
UsernamePasswordToken userToken = (UsernamePasswordToken)token;
//连接数据库
User user = userService.queryUserByName(userToken.getUsername());
if (user==null){
//用户名不存在
return null; //shiro底层就会抛出 UnknownAccountException
}
//密码认证 shiro做
return new SimpleAuthenticationInfo("",user.getPwd(),"");
}
}
测试：
1.9.6 请求授权实现
设置授权限制(shiroFilter中)：
filterMap.put("/user/add","perms[user:add]");
拦截成功！
配置未授权页面，添加一个controller方法：
@RequestMapping("/noauth")
@ResponseBody
public String noAuth(){
return "未经授权不能访问此页面";
}
然后在shiroFilter中设置未授权的跳转：
bean.setUnauthorizedUrl("/noauth");
设置授权：
//授权
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
System.out.println("授权了");
//给资源进行授权
SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
//添加资源的授权字符串
info.addStringPermission("user:add");
return info;
}
测试：
所有用户都可以访问add接口，授权成功：
给数据库增加一个字段，存放权限：
修改实体类：
设置授权：
//自定义 继承AuthorizingRealm
public class UserRealm extends AuthorizingRealm {
@Autowired
UserService userService;
//授权
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
System.out.println("授权了");
//给资源进行授权
SimpleAuthorizationInfo info = new SimpleAuthorizationInfo(); //添加资源的授权字符串
info.addStringPermission("user:add");
//取当前对象
Subject subject = SecurityUtils.getSubject();
User currentUser = (User) subject.getPrincipal();//拿到当前用户对象
//设置当前用户的权限
info.addStringPermission(currentUser.getPerms());
return info;
}
//认证
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
System.out.println("认证了");
UsernamePasswordToken userToken = (UsernamePasswordToken)token;
//连接数据库
User user = userService.queryUserByName(userToken.getUsername());
if (user==null){
//用户名不存在
return null; //shiro底层就会抛出 UnknownAccountException
}
//密码认证 shiro做
return new SimpleAuthenticationInfo(user,user.getPwd(),"");
}
}
1.9.7 整合thymeleaf
导入依赖：
<dependency>
<groupId>com.github.theborakompanionigroupId>
<artifactId>thymeleaf-extras-shiroartifactId>
<version>2.0.0version>
dependency>
改造静态页面，导入shiro命名空间：
<html lang="en" xmlns:th="http://www.thymeleaf.org"
xmlns:shiro="http://www.thymeleaf.org/thymeleaf-extras-shiro">
html>
<body>
<h1>Homeh1>
<p th:if="${session.loginUser==null}">
<a th:href="@{/toLogin}">登录a>
p>
<p th:text="${msg}">p>
<div shiro:hasPermission="user:add">
<a th:href="@{/user/add}">adda>
div>
<div shiro:hasPermission="user:update">
<a th:href="@{/user/update}">updatea>
div>
body>
测试：
为了完美，我们在用户登录后应该把信息放到Session中，我们完善下!在执行认证逻辑时候，加入session
（在Realm中）：
Subject subject = SecurityUtils.getSubject();
subject.getSession().setAttribute("loginUser",user);
1.10 Swagger
1.10.1 swagger介绍与集成
前后端分离：vue+springboot
后端：控制、服务层、数据访问层
前端：控制层、视图层
前后端如何交互：API
swagger号称世界上最流行的API框架，API文档与API定义同步更新，直接运行，支持多种语言。
在项目中使用swagger需要Springfox（2.x版本）:
- swagger2
- swagger-ui
Spring boot集成swagger
导入相关依赖：
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger2artifactId>
<version>3.0.0version>
dependency>
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-swagger-uiartifactId>
<version>3.0.0version>
dependency>
swagger3.0:
<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-boot-starterartifactId>
<version>3.0.0version>
dependency>
编写controller：
@RestController
public class HelloController {
@RequestMapping(value = "/hello")
public String hello(){
return "hello";
}
}
编写application.yaml:
spring:
application:
name: spb-sw
server:
port: 8001
# ===== 自定义swagger配置 ===== #
swagger:
enable: true
application-name: ${spring.application.name}
application-version: 1.0
application-description: springfox swagger 3.0
try-host: http://localhost:${server.port}
测试：
使用**@EnableOpenApi**注解，启用swagger配置：
@Configuration
@EnableOpenApi
public class SwaggerConfig {
}
访问地址：http://localhost:端口号/swagger-ui/index.html，(注意swagger2.x版本中访问的地址的为http://localhost:端口号/swagger-ui.html)
测试：
1.10.2 配置swagger信息
首先编写SwaggerProperties去获取application.yaml中swagger的配置信息：
package com.candy;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties("swagger")
public class SwaggerProperties {
/**
* 是否开启swagger，生产环境一般关闭，所以这里定义一个变量
*/
private Boolean enable;
private String applicationName;
private String applicationVersion;
private String applicationDescription;
/**
* 接口调试地址
*/
private String tryHost;
public Boolean getEnable() {
return enable;
}
public void setEnable(Boolean enable) {
this.enable = enable;
}
public String getApplicationName() {
return applicationName;
}
public void setApplicationName(String applicationName) {
this.applicationName = applicationName;
}
public String getApplicationVersion() {
return applicationVersion;
}
public void setApplicationVersion(String applicationVersion) {
this.applicationVersion = applicationVersion;
}
public String getApplicationDescription() {
return applicationDescription;
}
public void setApplicationDescription(String applicationDescription) {
this.applicationDescription = applicationDescription;
}
public String getTryHost() {
return tryHost;
}
public void setTryHost(String tryHost) {
this.tryHost = tryHost;
}
}
然后在写swaggerconfiguration：
package com.candy.config;
import com.candy.SwaggerProperties;
import io.swagger.models.auth.In;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.oas.annotations.EnableOpenApi;
import springfox.documentation.service.*;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.SecurityContext;
import springfox.documentation.spring.web.plugins.Docket;
import java.util.*;
@Configuration
@EnableOpenApi
public class SwaggerConfiguration {
private final SwaggerProperties swaggerProperties;
public SwaggerConfiguration(SwaggerProperties swaggerProperties) {
this.swaggerProperties = swaggerProperties;
}
@Bean
public Docket createReatApi(){
return new Docket(DocumentationType.OAS_30).pathMapping("/")
//定义是否开启swagger
.enable(swaggerProperties.getEnable())
//将api的元信息设置为包含json ResourceListing响应中
.apiInfo(apiInfo())
//设置接口调试地址
.host(swaggerProperties.getTryHost())
//选择哪些接口作为swagger的doc发布
.select()
//配置要扫描接口的方式 any:全部 basePackage：指定包
.apis(RequestHandlerSelectors.basePackage("com.candy"))
//过滤路径
.paths(PathSelectors.any())
.build()
//支持的通讯协议集合
.protocols(newHashSet("https","http"))
//授权信息设置，必要的header token等认证信息
.securitySchemes(securitySchemes())
//授权信息全局应用
.securityContexts(securityContexts());
}
//api页面上半部分展示信息
private ApiInfo apiInfo(){
return new ApiInfoBuilder().title(swaggerProperties.getApplicationName()+"ApiDoc")
.description(swaggerProperties.getApplicationDescription())
//作者信息
.contact(new Contact("sixcandy","null","[email protected]"))
.version("application version:"+swaggerProperties.getApplicationVersion())
.build();
}
private Set<String> newHashSet(String type1,String type2){
Set<String> set = new HashSet<>();
set.add(type1);
set.add(type2);
return set;
}
private List<SecurityScheme> securitySchemes(){
ApiKey apiKey = new ApiKey("BASE_TOKEN","token", In.HEADER.toValue());
return Collections.singletonList(apiKey);
}
private List<SecurityContext> securityContexts(){
return Collections.singletonList(
SecurityContext.builder()
.securityReferences(Collections.singletonList(new SecurityReference("BASE_TOKEN",new AuthorizationScope[]{new AuthorizationScope("global","")} )))
.build()
);
}
}
测试：
给api文档写注释：
添加一个user类：
package com.candy.pojo;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
@ApiModel("用户实体类")
public class User {
@ApiModelProperty("用户名")
public String username;
@ApiModelProperty("密码")
public String password;
}
改造controller：
@RestController
public class HelloController {
@GetMapping (value = "/hello")
public String hello(){
return "hello";
}
@PostMapping("/user")
public User user(){
return new User();
}
}
测试：
完结撒花！！！芜湖！！！