SpringCloud微服务

eureka 服务注册中心
zuul 网关/Filter
feign 微服务间调用(包含ribbon)
Hystringx 服务熔断
zipkin 链路追踪
rabbitMQ 消息队列
apoollo 集中配置中心
Swagger2 自动生成接口文档和客户端服务端代码

Swagger2使用

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>2.9.2</version>
</dependency>
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>2.9.2</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

@Configuration
@EnableSwagger2
public class SwaggerConfig {
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .pathMapping("/")
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.xxx.controller"))
                .paths(PathSelectors.any())
                .build().apiInfo(new ApiInfoBuilder()
                        .title("标题")
                        .description("详细信息")
                        .version("9.0")
                        .contact(new Contact("111","222","333"))
                        .license("The Apache License")
                        .licenseUrl("http://www.baidu.com")
                        .build());
    }
}

//在Controller类外面标注
// @Api 用来描述Controller
// @ApiOperation注解用来标记一个方法的作用。
// @ApiImplicitParam注解用来描述参数

@RestController
@Api(tags = "用户相关接口")
@RequestMapping("/user")
public class UserController {
    @PostMapping("/")
    @ApiOperation("添加用户")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "uid", value = "用户名", defaultValue = "1"),
            @ApiImplicitParam(name = "pwd", value = "密码", defaultValue = "", required = true)
    }
    )
    public RespBean addUser(String username, @RequestParam(required = true) String address) {
        return new RespBean();
    }
}

密码加密与微服务鉴权JWT

  <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
        <version>0.6.0</version>
    </dependency>

JWT是由三段信息构成的，将这三段信息文本用.链接一起就构成了Jwt字符串。就像这样:
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ

第一部分我们称它为头部（header)
第二部分我们称其为载荷（payload, 类似于飞机上承载的物品)
第三部分是签证（signature).

生成

  //为了方便测试，我们将过期时间设置为1分钟
    long now = System.currentTimeMillis();//当前时间 
    long exp = now + 1000*60;//过期时间为1分钟 
    JwtBuilder builder= Jwts.builder().setId("888")
        .setSubject("小白")
        .setIssuedAt(new Date())
        .signWith(SignatureAlgorithm.HS256,"xiaocai") 
        .setExpiration(new Date(exp));//设置过期时间
          System.out.println( builder.compact() );

验证

  String token="eyJhbGciOiJIUzI1NiJ9.eyJqdGkiOiI4ODgiLCJzdWIiOiLlsI_nmb0iLCJpYXQiO
  jE1MjM0MTM0NTh9.gq0J‐cOM_qCNqU_s‐d_IrRytaNenesPmqAIhQpYXHZk";
          Claims claims =
  Jwts.parser().setSigningKey("xiaocai").parseClaimsJws(token).getBody();
          System.out.println("id:"+claims.getId());
          System.out.println("subject:"+claims.getSubject());
          System.out.println("IssuedAt:"+claims.getIssuedAt());