手把手教你解决升级SpringBoot2.X后无法向eureka注册服务的问题详解

前言

今天对蘑菇博客的springboot和springcloud的版本进行升级，在升级后发现挺多地方需要更改的

首先是yml配置文件里面的security已经更改了，由之前的配置

security:
  basic:
    enabled: true
  user:
    name: user
    password: password123

更改成下面这样的配置

spring:
  security:
    user:
      name: user
      password: password123

然后，我们需要引入的eureka依赖，也由原来的

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>

变成了下面的

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>

在启动eureka之前，我们还需要添加一个配置文件：WebSecurityConfig

package com.moxi.mogublog.eureka.config;

import org.springframework.context.annotation.Configuration;
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;

/**
 * WebSecurityConfig
 *
 * @author: 陌溪
 * @create: 2019-12-21-19:20
 */
@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    /**
     *
     * @param http
     * @throws Exception
     */
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        // Configure HttpSecurity as needed (e.g. enable http basic).
        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.NEVER);
        http.csrf().disable();
        // 如果是form方式,不能使用url格式登录
        http.authorizeRequests().anyRequest().authenticated().and().httpBasic();
    }

}

因为springboot 2.x版本，将下列的yml配置给废弃了

#高版本的丢弃了
security:
 basic:
  enabled: true

所以我们需要通过配置类的方式，来启动安全验证，如果不配置的话，就会出现下面的问题

javax.ws.rs.WebApplicationException: com.fasterxml.jackson.databind.exc.MismatchedInputException: Root name 'timestamp' does not match expected ('instance') for type [simple type, class com.netflix.appinfo.InstanceInfo]