目錄
五.創建業務類存入ioc容器，按上方配置的userService名稱來，開啓事務
傳統用戶名登錄流程
使用SpringSecurity的流程
一.maven導入依賴
<properties>
<spring.version>5.0.2.RELEASE</spring.version>
<spring.security.version>5.0.1.RELEASE</spring.security.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- springSecurity需要使用的插件start-->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- springSecurity需要使用的插件end-->
</dependencies>
<build>
<plugins>
<!-- java編譯插件 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<configuration>
<!-- 指定端口 -->
<port>8090</port>
<!-- 請求路徑 -->
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
二.在web.xml中配置過濾器（固定寫法）
<!-- 需要配置spring容器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 加載配置文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-security.xml</param-value>
</context-param>
<!-- 過濾器-->
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
三.編寫spring-security.xml文件
1.無數據庫情況下使用spring-security
<!-- 配置不過濾的資源（靜態資源及登錄相關） -->
<security:http security="none" pattern="/login.html" />
<security:http security="none" pattern="/failer.html" />
<security:http auto-config="true" use-expressions="false" >
<!-- 配置資料連接，表示任意路徑都需要ROLE_USER權限 -->
<security:intercept-url pattern="/**" access="ROLE_USER" />
<!-- 自定義登陸頁面，
login-page 自定義登陸頁面
authentication-failure-url
用戶權限校驗失敗之後纔會跳轉到這個頁面，如果數據庫中沒有這個用戶則不會跳轉到這個頁面。
default-target-url 登陸成功後跳轉的頁面。
注：登陸頁面用戶名固定 username，密碼 password，action:login -->
<security:form-login
login-page="/login.html"
login-processing-url="/login"
username-parameter="username"
password-parameter="password"
authentication-failure-url="/failer.html"
default-target-url="/success.html"
authentication-success-forward-url="/success.html"
/>
<!-- 登出，
invalidate-session 是否刪除
session logout-url：登出處理鏈接
logout-success-url：登出成功頁面
注：登出操作 只需要鏈接到 logout即可登出當前用戶 -->
<security:logout
invalidate-session="true" logout-url="/logout"
logout-success-url="/login.jsp" />
<!-- 關閉CSRF,默認是開啓的(跨服務器登錄的一個選項) -->
<security:csrf disabled="true" />
</security:http>
<!-- （此處是不需要數據庫時使用）-->
<security:authentication-manager>
<security:authentication-provider>
<security:user-service>
<security:user name="user" password="{noop}user"
authorities="ROLE_USER" />
<security:user name="admin" password="{noop}admin"
authorities="ROLE_ADMIN" />
</security:user-service>
</security:authentication-provider>
</security:authentication-manager>
2.有數據庫情況下的springSecurity.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:security="http://www.springframework.org/schema/security"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security.xsd">
<!-- 配置不攔截的資源 -->
<security:http pattern="/login.jsp" security="none"/>
<security:http pattern="/failer.jsp" security="none"/>
<security:http pattern="/css/**" security="none"/>
<security:http pattern="/img/**" security="none"/>
<security:http pattern="/plugins/**" security="none"/>
<!--
配置具體的規則
auto-config="true" 不用自己編寫登錄的頁面，框架提供默認登錄頁面
use-expressions="false" 是否使用SPEL表達式（沒學習過）
-->
<security:http auto-config="true" use-expressions="false">
<!-- 配置具體的攔截的規則 pattern="請求路徑的規則" access="訪問系統的人，必須有ROLE_USER的角色" -->
<security:intercept-url pattern="/**" access="ROLE_USER,ROLE_ADMIN"/>
<!-- 定義跳轉的具體的頁面
注：登陸頁面用戶名固定 username，密碼 password，action:login -->
<security:form-login
login-page="/login.jsp"
<!--該處是login.jsp頁面請求的路徑-->
login-processing-url="/login.do"
default-target-url="/index.jsp"
authentication-failure-url="/failer.jsp"
/>
<!-- 關閉跨域請求 -->
<security:csrf disabled="true"/>
<!-- 退出 -->
<security:logout invalidate-session="true" logout-url="/logout.do" logout-success-url="/login.jsp" />
</security:http>
<!-- 切換成數據庫中的用戶名和密碼 -->
<security:authentication-manager>
<!-- 設置登錄的業務類 需要將該類配置到ioc容器中 -->
<security:authentication-provider user-service-ref="userService">
<!-- 配置加密的方式 -->
<security:password-encoder ref="passwordEncoder"/>
</security:authentication-provider>
</security:authentication-manager>
<!-- 配置加密類 -->
<bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>
<!-- 提供了入門的方式，在內存中存入用戶名和密碼
<security:authentication-manager>
<security:authentication-provider>
<security:user-service>
<security:user name="admin" password="{noop}admin" authorities="ROLE_USER"/>
</security:user-service>
</security:authentication-provider>
</security:authentication-manager>
-->
</beans>
- default-target-url 是登陸成功後跳轉的頁面，這裏設置跳轉到index.jsp
authentication-success-forward-url,是指相當於下面的圖示中箭頭部分的代碼 給登陸成功後跳轉的 index.jsp設置了一個請求轉發，所以spring security 能更方便的管理 不需要寫以下箭頭的那段代碼
四.創建對應的頁面文件
五.創建業務類存入ioc容器，按上方配置的userService名稱來，開啓事務
5.1涉及到的框架類：
org.springframework.security.core.userdetails.UserDetailsService：業務接口繼承此類，實現其中loadUserByUsername方法
org.springframework.security.core.userdetails.UserDetails：loadUserByUsername方法返回對象
org.springframework.security.core.userdetails.User：UserDetails接口實現類，作爲loadUserByUsername方法返回值
org.springframework.security.core.GrantedAuthority：User構造方法控制權限參數
org.springframework.security.core.authority.SimpleGrantedAuthority：GrantedAuthority方法實現類
- 該業務類接口必須繼承UserDetailsService，該接口的實現類需實現loadUserByUsername方法
- 在loadUserByUsername方法中定義User類返回（可查看UserDetailsService源碼以及繼承關係知道該類，使用以下構造方法）
username：用戶名
password：密碼
enabled：該用戶是否激活
authorities：用戶角色列表（List<SimpleGrantedAuthority>）
package com.gaipian.service.impl;
import com.gaipian.dao.IUserDao;
import com.gaipian.domaim.Role;
import com.gaipian.domaim.UserInfo;
import com.gaipian.service.IUserService;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.List;
@Service("userService")
@Transactional
public class UserServiceImpl implements IUserService {
@Resource(name = "userDao")
private IUserDao userDao;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
UserInfo userInfo = null;
try {
userInfo = userDao.findByUser(username);
} catch (Exception e) {
e.printStackTrace();
}
//{noop}該處此時必須要加，不然會報錯
User user = new User(userInfo.getUsername(),"{noop}"+userInfo.getPassword(),userInfo.getStatus()==1?true:false,true,true,true,getAuthorities(userInfo.getRoles()));
return user;
}
// SimpleGrantedAuthority 是 authorities參數的實現類
public List<SimpleGrantedAuthority> getAuthorities(List<Role> roles){
List<SimpleGrantedAuthority> list = new ArrayList<>();
//一定要遍歷，此時角色與用戶是多對多的關係
for (Role role:roles) {
list.add(new SimpleGrantedAuthority("ROLE_"+role.getRoleName()));
}
return list;
}
}
六.退出操作
- 在security配置文件中設置退出標籤
<!-- 退出 -->
<security:logout invalidate-session="true" logout-url="/logout.do" logout-success-url="/login.jsp" />
logout-url:退出需要請求的鏈接
logout-success-url:註冊成功跳轉的頁面。