何时生成和使用jwt，其实我们主要是token更有意义并携带一些信息
https://github.com/Ants-double/huanhuncao/tree/master/visio
新建一个spring boot 项目，并添加hello请求
工程目录结构如下
package com.antsdouble.demojwt.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloWorldController {
@GetMapping(value = {"/hello"})
public String hello() {
return "Hello World JWT";
}
}
配置Spring Security 和JWT
完整 的pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.antsdouble</groupId>
<artifactId>demo-jwt</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo-jwt</name>
<description>Demo project for Spring Boot</description>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
生成jwt
https://github.com/Ants-double/huanhuncao/tree/master/visio
如果请求authenticate 则会生成jwt
检证 jwt
? https://github.com/Ants-double/huanhuncao/tree/master/visio
1. 请求业务接口带上jwt 先验证通过后再处理具体的请求
配置数据库相关
application.yml
jwt:
secret: javainuse
spring:
datasource:
url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=CTT
username: root
password: 456123
platform: mysql
jpa:
hibernate:
ddl-auto: create-drop添加对应的DTO 和DAO
package com.antsdouble.demojwt.model;
/**
* @author lyy
* @Deprecated
* @date 2019/10/17
*/
public class UserDTO {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
package com.antsdouble.demojwt.dao;
import com.antsdouble.demojwt.model.DAOUser;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
/**
* @author lyy
* @Deprecated
* @date 2019/10/17
*/
@Repository
public interface UserDao extends CrudRepository<DAOUser, Integer> {
DAOUser findByUsername(String username);
}
package com.antsdouble.demojwt.controller;
import com.antsdouble.demojwt.config.JwtTokenUtil;
import com.antsdouble.demojwt.model.JwtRequest;
import com.antsdouble.demojwt.model.JwtResponse;
import com.antsdouble.demojwt.model.UserDTO;
import com.antsdouble.demojwt.service.JwtUserDetailsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.DisabledException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.web.bind.annotation.*;
/**
* @author lyy
* @Deprecated
* @date 2019/10/17
*/
@RestController
@CrossOrigin
public class JwtAuthenticationController {
@Autowired
private AuthenticationManager authenticationManager;
@Autowired
private JwtTokenUtil jwtTokenUtil;
@Autowired
private JwtUserDetailsService userDetailsService;
@RequestMapping(value = "/authenticate", method = RequestMethod.POST)
public ResponseEntity<?> createAuthenticationToken(@RequestBody JwtRequest authenticationRequest) throws Exception {
authenticate(authenticationRequest.getUsername(), authenticationRequest.getPassword());
final UserDetails userDetails = userDetailsService
.loadUserByUsername(authenticationRequest.getUsername());
final String token = jwtTokenUtil.generateToken(userDetails);
return ResponseEntity.ok(new JwtResponse(token));
}
@RequestMapping(value = "/register", method = RequestMethod.POST)
public ResponseEntity<?> saveUser(@RequestBody UserDTO user) throws Exception {
return ResponseEntity.ok(userDetailsService.save(user));
}
private void authenticate(String username, String password) throws Exception {
try {
authenticationManager.authenticate(new UsernamePasswordAuthenticationToken(username, password));
} catch (DisabledException e) {
throw new Exception("USER_DISABLED", e);
} catch (BadCredentialsException e) {
throw new Exception("INVALID_CREDENTIALS", e);
}
}
}
package com.antsdouble.demojwt.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
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;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
/**
* @author lyy
* @Deprecated
* @date 2019/10/17
*/
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;
@Autowired
private UserDetailsService jwtUserDetailsService;
@Autowired
private JwtRequestFilter jwtRequestFilter;
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
// configure AuthenticationManager so that it knows from where to load
// user for matching credentials
// Use BCryptPasswordEncoder
auth.userDetailsService(jwtUserDetailsService).passwordEncoder(passwordEncoder());
}
@Bean
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
@Bean
@Override
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
}
@Override
protected void configure(HttpSecurity httpSecurity) throws Exception {
// We don't need CSRF for this example
httpSecurity.csrf().disable()
// dont authenticate this particular request
.authorizeRequests().antMatchers("/authenticate", "/register").
permitAll().antMatchers(HttpMethod.OPTIONS, "/**")
.permitAll().
// all other requests need to be authenticated
anyRequest().authenticated().and().
// make sure we use stateless session; session won't be used to
// store user's state.
exceptionHandling().authenticationEntryPoint(jwtAuthenticationEntryPoint).and().sessionManagement()
.sessionCreationPolicy(SessionCreationPolicy.STATELESS);
// Add a filter to validate the tokens with every request
httpSecurity.addFilterBefore(jwtRequestFilter, UsernamePasswordAuthenticationFilter.class);
}
}
package com.antsdouble.demojwt.config;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;
import java.io.Serializable;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Function;
/**
* @author lyy
* @Deprecated
* @date 2019/10/17
*/
@Component
public class JwtTokenUtil implements Serializable {
private static final long serialVersionUID = -2550185165626007488L;
public static final long JWT_TOKEN_VALIDITY = 5 * 60 * 60;
@Value("${jwt.secret}")
private String secret;
//retrieve username from jwt token
public String getUsernameFromToken(String token) {
return getClaimFromToken(token, Claims::getSubject);
}
//retrieve expiration date from jwt token
public Date getExpirationDateFromToken(String token) {
return getClaimFromToken(token, Claims::getExpiration);
}
public <T> T getClaimFromToken(String token, Function<Claims, T> claimsResolver) {
final Claims claims = getAllClaimsFromToken(token);
return claimsResolver.apply(claims);
}
//for retrieveing any information from token we will need the secret key
private Claims getAllClaimsFromToken(String token) {
return Jwts.parser().setSigningKey(secret).parseClaimsJws(token).getBody();
}
//check if the token has expired
private Boolean isTokenExpired(String token) {
final Date expiration = getExpirationDateFromToken(token);
return expiration.before(new Date());
}
//generate token for user
public String generateToken(UserDetails userDetails) {
Map<String, Object> claims = new HashMap<>();
return doGenerateToken(claims, userDetails.getUsername());
}
//while creating the token -
//1. Define claims of the token, like Issuer, Expiration, Subject, and the ID
//2. Sign the JWT using the HS512 algorithm and secret key.
//3. According to JWS Compact Serialization(https://tools.ietf.org/html/draft-ietf-jose-json-web-signature-41#section-3.1)
// compaction of the JWT to a URL-safe string
private String doGenerateToken(Map<String, Object> claims, String subject) {
return Jwts.builder().setClaims(claims).setSubject(subject).setIssuedAt(new Date(System.currentTimeMillis()))
.setExpiration(new Date(System.currentTimeMillis() + JWT_TOKEN_VALIDITY * 1000))
.signWith(SignatureAlgorithm.HS512, secret).compact();
}
//validate token
public Boolean validateToken(String token, UserDetails userDetails) {
final String username = getUsernameFromToken(token);
return (username.equals(userDetails.getUsername()) && !isTokenExpired(token));
}
}
package com.antsdouble.demojwt.config;
import com.antsdouble.demojwt.service.JwtUserDetailsService;
import io.jsonwebtoken.ExpiredJwtException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* @author lyy
* @Deprecated
* @date 2019/10/17
*/
@Component
public class JwtRequestFilter extends OncePerRequestFilter {
@Autowired
private JwtUserDetailsService jwtUserDetailsService;
@Autowired
private JwtTokenUtil jwtTokenUtil;
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
throws ServletException, IOException {
final String requestTokenHeader = request.getHeader("Authorization");
String username = null;
String jwtToken = null;
// JWT Token is in the form "Bearer token". Remove Bearer word and get
// only the Token
if (requestTokenHeader != null && requestTokenHeader.startsWith("Bearer ")) {
jwtToken = requestTokenHeader.substring(7);
try {
username = jwtTokenUtil.getUsernameFromToken(jwtToken);
} catch (IllegalArgumentException e) {
System.out.println("Unable to get JWT Token");
} catch (ExpiredJwtException e) {
System.out.println("JWT Token has expired");
}
catch (Exception e){
System.out.println(e);
}
} else {
logger.warn("JWT Token does not begin with Bearer String");
}
// Once we get the token validate it.
if (username != null && SecurityContextHolder.getContext().getAuthentication() == null) {
UserDetails userDetails = this.jwtUserDetailsService.loadUserByUsername(username);
// if token is valid configure Spring Security to manually set
// authentication
if (jwtTokenUtil.validateToken(jwtToken, userDetails)) {
UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken = new UsernamePasswordAuthenticationToken(
userDetails, null, userDetails.getAuthorities());
usernamePasswordAuthenticationToken
.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
// After setting the Authentication in the context, we specify
// that the current user is authenticated. So it passes the
// Spring Security Configurations successfully.
SecurityContextHolder.getContext().setAuthentication(usernamePasswordAuthenticationToken);
}
}
chain.doFilter(request, response);
}
}
package com.antsdouble.demojwt.config;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.stereotype.Component;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.Serializable;
/**
* @author lyy
* @Deprecated
* @date 2019/10/17
*/
@Component
public class JwtAuthenticationEntryPoint implements AuthenticationEntryPoint, Serializable {
private static final long serialVersionUID = -7858869558953243875L;
@Override
public void commence(HttpServletRequest request, HttpServletResponse response,
AuthenticationException authException) throws IOException {
response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized");
}
}
?
?
请求测试
https://dzone.com/articles/spring-boot-security-json-web-tokenjwt-hello-world
Spring Boot Security And JSON Web Token
原文：https://www.cnblogs.com/ants_double/p/11691476.html